I know others have thought of increasing the power of the Honda's for years.
But I am new here!
The brakes will be rebuilt first and silicone fluid used.
Fuel system rebuilt and new lines.
Then I want to do a few performance upgrades.
Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
Electric fan instead of the belt driven engine fan.
Better intake and air cleaner.
No cutting or anything that can't be retuned back to stock.
Ideas?
Lyle
Performance upgrades
Re: Performance upgrades
If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
But a LOT of this delivers very small returns for items that are not all that cheap to do.
I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
Hope to get out to the drag strip this summer and see what the car does compared to stock.
The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
But a LOT of this delivers very small returns for items that are not all that cheap to do.
I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
Hope to get out to the drag strip this summer and see what the car does compared to stock.
--- In
2cylinderhondas@yahoogroups.com
, "lyletrudell" wrote:
> I know others have thought of increasing the power of the Honda's for years.
> But I am new here!
> The brakes will be rebuilt first and silicone fluid used.
> Fuel system rebuilt and new lines.
> Then I want to do a few performance upgrades.
> Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> Electric fan instead of the belt driven engine fan.
> Better intake and air cleaner.
> No cutting or anything that can't be retuned back to stock.
> Ideas?
> Lyle
-
misterpoopoohead
- Posts: 30
- Joined: Tue Mar 20, 2007 3:34 am
Re: Performance upgrades
Hi,
I'm curious. Is a specific carburetor necessary to get the 45HP? I thought you just needed the right cam and head.
Kev Sent from my Verizon Wireless BlackBerry
From:
"jpro8071"
Date:
Mon, 26 Apr 2010 18:03:07 -0000
To:
Subject:
[2cylinderhondas] Re: Performance upgrades
If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
But a LOT of this delivers very small returns for items that are not all that cheap to do.
I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
Hope to get out to the drag strip this summer and see what the car does compared to stock.
I'm curious. Is a specific carburetor necessary to get the 45HP? I thought you just needed the right cam and head.
Kev Sent from my Verizon Wireless BlackBerry
From:
"jpro8071"
Date:
Mon, 26 Apr 2010 18:03:07 -0000
To:
Subject:
[2cylinderhondas] Re: Performance upgrades
If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
But a LOT of this delivers very small returns for items that are not all that cheap to do.
I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
Hope to get out to the drag strip this summer and see what the car does compared to stock.
--- In
2cylinderhondas@ yahoogroups. com
, "lyletrudell" wrote:
> I know others have thought of increasing the power of the Honda's for years.
> But I am new here!
> The brakes will be rebuilt first and silicone fluid used.
> Fuel system rebuilt and new lines.
> Then I want to do a few performance upgrades.
> Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> Electric fan instead of the belt driven engine fan.
> Better intake and air cleaner.
> No cutting or anything that can't be retuned back to stock.
> Ideas?
> Lyle
Re: Performance upgrades
It's true that the carb meters based on the air flowing in - but IMO it would be worth researching a different one if going for more horsepower.
Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock carb could meter more fuel at the top end. I'm speaking from theory - could very well be wrong. It is possible that the stock carb could support 45 hp.
You don't need the exact carb from the 45 hp model, but I would suppose it takes some of the guess work out and would also look closer to stock.
Prior to going the EFI route we were seriously looking at using a Mikuni carb. I'd read good things about how easy they are to tune.
But all of this is conjecture and opinion based on theory. Would love to hear if anyone on the list has played with both carbs and can comment on the bore size, etc..
Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock carb could meter more fuel at the top end. I'm speaking from theory - could very well be wrong. It is possible that the stock carb could support 45 hp.
You don't need the exact carb from the 45 hp model, but I would suppose it takes some of the guess work out and would also look closer to stock.
Prior to going the EFI route we were seriously looking at using a Mikuni carb. I'd read good things about how easy they are to tune.
But all of this is conjecture and opinion based on theory. Would love to hear if anyone on the list has played with both carbs and can comment on the bore size, etc..
--- In
2cylinderhondas@yahoogroups.com
, misterpoopoohead@... wrote:
> Hi,
> I'm curious. Is a specific carburetor necessary to get the 45HP? I thought you just needed the right cam and head.
> Kev
> Sent from my Verizon Wireless BlackBerry
> -----Original Message-----
> From: "jpro8071"
> Date: Mon, 26 Apr 2010 18:03:07
> To: Subject: [2cylinderhondas] Re: Performance upgrades
> If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
> The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
> Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
> But a LOT of this delivers very small returns for items that are not all that cheap to do.
> I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
> Hope to get out to the drag strip this summer and see what the car does compared to stock.
> --- In
2cylinderhondas@yahoogroups.com
, "lyletrudell" wrote:
> > I know others have thought of increasing the power of the Honda's for years.
> > But I am new here!
> > The brakes will be rebuilt first and silicone fluid used.
> > Fuel system rebuilt and new lines.
> > Then I want to do a few performance upgrades.
> > Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> > Electric fan instead of the belt driven engine fan.
> > Better intake and air cleaner.
> > No cutting or anything that can't be retuned back to stock.
> > Ideas?
> > Lyle
-
misterpoopoohead
- Posts: 30
- Joined: Tue Mar 20, 2007 3:34 am
Re: Performance upgrades
Interesting stuff. I think my friend Miles had mentioned that people have tried after market carbs but with poor results. I suppose it is best to use the stock carb. so, is the larger carb the 40mm carb?
Kev Sent from my Verizon Wireless BlackBerry
From:
"jpro8071"
Date:
Mon, 26 Apr 2010 19:40:51 -0000
To:
Subject:
[2cylinderhondas] Re: Performance upgrades
It's true that the carb meters based on the air flowing in - but IMO it would be worth researching a different one if going for more horsepower.
Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock carb could meter more fuel at the top end. I'm speaking from theory - could very well be wrong. It is possible that the stock carb could support 45 hp.
You don't need the exact carb from the 45 hp model, but I would suppose it takes some of the guess work out and would also look closer to stock.
Prior to going the EFI route we were seriously looking at using a Mikuni carb. I'd read good things about how easy they are to tune.
But all of this is conjecture and opinion based on theory. Would love to hear if anyone on the list has played with both carbs and can comment on the bore size, etc..
Kev Sent from my Verizon Wireless BlackBerry
From:
"jpro8071"
Date:
Mon, 26 Apr 2010 19:40:51 -0000
To:
Subject:
[2cylinderhondas] Re: Performance upgrades
It's true that the carb meters based on the air flowing in - but IMO it would be worth researching a different one if going for more horsepower.
Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock carb could meter more fuel at the top end. I'm speaking from theory - could very well be wrong. It is possible that the stock carb could support 45 hp.
You don't need the exact carb from the 45 hp model, but I would suppose it takes some of the guess work out and would also look closer to stock.
Prior to going the EFI route we were seriously looking at using a Mikuni carb. I'd read good things about how easy they are to tune.
But all of this is conjecture and opinion based on theory. Would love to hear if anyone on the list has played with both carbs and can comment on the bore size, etc..
--- In
2cylinderhondas@ yahoogroups. com
, misterpoopoohead@ ... wrote:
> Hi,
> I'm curious. Is a specific carburetor necessary to get the 45HP? I thought you just needed the right cam and head.
> Kev
> Sent from my Verizon Wireless BlackBerry
> -----Original Message-----
> From: "jpro8071"
> Date: Mon, 26 Apr 2010 18:03:07
> To: Subject: [2cylinderhondas] Re: Performance upgrades
> If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
> The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
> Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
> But a LOT of this delivers very small returns for items that are not all that cheap to do.
> I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
> Hope to get out to the drag strip this summer and see what the car does compared to stock.
> --- In
2cylinderhondas@ yahoogroups. com
, "lyletrudell" wrote:
> > I know others have thought of increasing the power of the Honda's for years.
> > But I am new here!
> > The brakes will be rebuilt first and silicone fluid used.
> > Fuel system rebuilt and new lines.
> > Then I want to do a few performance upgrades.
> > Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> > Electric fan instead of the belt driven engine fan.
> > Better intake and air cleaner.
> > No cutting or anything that can't be retuned back to stock.
> > Ideas?
> > Lyle
Re: Performance upgrades
I don't know the exact bore - would have to consult the blue book, if the details are even in there.
We ran a down-draft weber (like the 2.0L Fords ran) for a while - had to fill the jets with lead and redrill them to get them small enough. Worked okay, but kind of bulky.
We ran a down-draft weber (like the 2.0L Fords ran) for a while - had to fill the jets with lead and redrill them to get them small enough. Worked okay, but kind of bulky.
--- In
2cylinderhondas@yahoogroups.com
, misterpoopoohead@... wrote:
> Interesting stuff. I think my friend Miles had mentioned that people have tried after market carbs but with poor results. I suppose it is best to use the stock carb. so, is the larger carb the 40mm carb?
> Kev
> Sent from my Verizon Wireless BlackBerry
> -----Original Message-----
> From: "jpro8071"
> Date: Mon, 26 Apr 2010 19:40:51
> To: Subject: [2cylinderhondas] Re: Performance upgrades
> It's true that the carb meters based on the air flowing in - but IMO it would be worth researching a different one if going for more horsepower.
> Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock carb could meter more fuel at the top end. I'm speaking from theory - could very well be wrong. It is possible that the stock carb could support 45 hp.
> You don't need the exact carb from the 45 hp model, but I would suppose it takes some of the guess work out and would also look closer to stock.
> Prior to going the EFI route we were seriously looking at using a Mikuni carb. I'd read good things about how easy they are to tune.
> But all of this is conjecture and opinion based on theory. Would love to hear if anyone on the list has played with both carbs and can comment on the bore size, etc..
> --- In
2cylinderhondas@yahoogroups.com
, misterpoopoohead@ wrote:
> > Hi,
> > I'm curious. Is a specific carburetor necessary to get the 45HP? I thought you just needed the right cam and head.
> > Kev
> > Sent from my Verizon Wireless BlackBerry
> > -----Original Message-----
> > From: "jpro8071"
> > Date: Mon, 26 Apr 2010 18:03:07
> > To: > Subject: [2cylinderhondas] Re: Performance upgrades
> > If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
> > The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
> > Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
> > But a LOT of this delivers very small returns for items that are not all that cheap to do.
> > I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
> > Hope to get out to the drag strip this summer and see what the car does compared to stock.
> > --- In
2cylinderhondas@yahoogroups.com
, "lyletrudell" wrote:
> > > I know others have thought of increasing the power of the Honda's for years.
> > > But I am new here!
> > > The brakes will be rebuilt first and silicone fluid used.
> > > Fuel system rebuilt and new lines.
> > > Then I want to do a few performance upgrades.
> > > Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> > > Electric fan instead of the belt driven engine fan.
> > > Better intake and air cleaner.
> > > No cutting or anything that can't be retuned back to stock.
> > > Ideas?
> > > Lyle
Re: Performance upgrades
Anyone out there looking for a pretty nice 1970 N600? Syncromesh gears, completely rebuilt engine and trans. Great breaking system. Very nice body, paint OK. get in it and go anywhere. I have $8,500 invested in it. All chrome is very nice. Factory blue with red interior. I'm in Upland, CA Looking for offers.
�
Greg -- Professional Isetta Restorations
�
Greg -- Professional Isetta Restorations
-
misterpoopoohead
- Posts: 30
- Joined: Tue Mar 20, 2007 3:34 am
Re: Performance upgrades
Hmm. I have a bluebook. I don't remember the 40mm carb being in it. I'll take another look. I once asked Miles if a carb from a modern bike would do. He said I'd have to fiddle with the jets to get it to run right (maybe).
I'll just try to set it up with a blower. ;o)
Kev Sent from my Verizon Wireless BlackBerry
From:
"jpro8071"
Date:
Mon, 26 Apr 2010 20:55:46 -0000
To:
Subject:
[2cylinderhondas] Re: Performance upgrades
I don't know the exact bore - would have to consult the blue book, if the details are even in there.
We ran a down-draft weber (like the 2.0L Fords ran) for a while - had to fill the jets with lead and redrill them to get them small enough. Worked okay, but kind of bulky.
I'll just try to set it up with a blower. ;o)
Kev Sent from my Verizon Wireless BlackBerry
From:
"jpro8071"
Date:
Mon, 26 Apr 2010 20:55:46 -0000
To:
Subject:
[2cylinderhondas] Re: Performance upgrades
I don't know the exact bore - would have to consult the blue book, if the details are even in there.
We ran a down-draft weber (like the 2.0L Fords ran) for a while - had to fill the jets with lead and redrill them to get them small enough. Worked okay, but kind of bulky.
--- In
2cylinderhondas@ yahoogroups. com
, misterpoopoohead@ ... wrote:
> Interesting stuff. I think my friend Miles had mentioned that people have tried after market carbs but with poor results. I suppose it is best to use the stock carb. so, is the larger carb the 40mm carb?
> Kev
> Sent from my Verizon Wireless BlackBerry
> -----Original Message-----
> From: "jpro8071"
> Date: Mon, 26 Apr 2010 19:40:51
> To: Subject: [2cylinderhondas] Re: Performance upgrades
> It's true that the carb meters based on the air flowing in - but IMO it would be worth researching a different one if going for more horsepower.
> Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock carb could meter more fuel at the top end. I'm speaking from theory - could very well be wrong. It is possible that the stock carb could support 45 hp.
> You don't need the exact carb from the 45 hp model, but I would suppose it takes some of the guess work out and would also look closer to stock.
> Prior to going the EFI route we were seriously looking at using a Mikuni carb. I'd read good things about how easy they are to tune.
> But all of this is conjecture and opinion based on theory. Would love to hear if anyone on the list has played with both carbs and can comment on the bore size, etc..
> --- In
2cylinderhondas@ yahoogroups. com
, misterpoopoohead@ wrote:
> > Hi,
> > I'm curious. Is a specific carburetor necessary to get the 45HP? I thought you just needed the right cam and head.
> > Kev
> > Sent from my Verizon Wireless BlackBerry
> > -----Original Message-----
> > From: "jpro8071"
> > Date: Mon, 26 Apr 2010 18:03:07
> > To: > Subject: [2cylinderhondas] Re: Performance upgrades
> > If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
> > The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
> > Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
> > But a LOT of this delivers very small returns for items that are not all that cheap to do.
> > I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
> > Hope to get out to the drag strip this summer and see what the car does compared to stock.
> > --- In
2cylinderhondas@ yahoogroups. com
, "lyletrudell" wrote:
> > > I know others have thought of increasing the power of the Honda's for years.
> > > But I am new here!
> > > The brakes will be rebuilt first and silicone fluid used.
> > > Fuel system rebuilt and new lines.
> > > Then I want to do a few performance upgrades.
> > > Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> > > Electric fan instead of the belt driven engine fan.
> > > Better intake and air cleaner.
> > > No cutting or anything that can't be retuned back to stock.
> > > Ideas?
> > > Lyle
Re: Performance upgrades
Just a thought but would not all this extra power put more pressure on the crank ( a part that is VERY hard to come by) unless some one has come up with a crank shaft that will work. Seems like this may end the life of your car. like I said 'just a thought'
Tom T
Tom T
> ----- Original Message -----
> From:
> misterpoopoohead@...
> To:
> 2cylinderhondas@yahoogroups.com
> Sent:
> Monday, April 26, 2010 8:26
> PM
> Subject:
> Re: [2cylinderhondas] Re:
> Performance upgrades
> Hmm. I have a bluebook. I don't remember the 40mm carb being in it. I'll > take another look. I once asked Miles if a carb from a modern bike would do.
> He said I'd have to fiddle with the jets to get it to run right > (maybe).
> I'll just try to set it up with a blower. ;o)
> Kev
> Sent from my Verizon Wireless BlackBerry
> From:
> "jpro8071"
> Date:
> Mon, 26 Apr 2010 20:55:46 -0000
> To:
>
> Subject:
> [2cylinderhondas] Re: Performance upgrades
> I don't know the exact bore - would have to consult the blue book, if the > details are even in there.
> We ran a down-draft weber (like the 2.0L
> Fords ran) for a while - had to fill the jets with lead and redrill them to > get them small enough. Worked okay, but kind of bulky.
> --- In
> 2cylinderhondas@ yahoogroups. com
> ,
> misterpoopoohead@ ... wrote:
> > Interesting stuff. I think my
> friend Miles had mentioned that people have tried after market carbs but with > poor results. I suppose it is best to use the stock carb. so, is the larger > carb the 40mm carb?
> > Kev
> > Sent from my Verizon Wireless
> BlackBerry
> > -----Original Message-----
> > From:
> "jpro8071"
> > Date: Mon, 26 Apr 2010 19:40:51
> > To: 2cylinderhondas@ yahoogroups. com
> Subject: [2cylinderhondas] Re: Performance upgrades
> > It's true
> that the carb meters based on the air flowing in - but IMO it would be worth > researching a different one if going for more horsepower.
> Going from 36 to 45 hp is a 25% increase. I'd be skeptical how well the stock > carb could meter more fuel at the top end. I'm speaking from theory - could > very well be wrong. It is possible that the stock carb could support 45 > hp.
> > You don't need the exact carb from the 45 hp model, but I > would suppose it takes some of the guess work out and would also look closer > to stock.
> > Prior to going the EFI route we were seriously
> looking at using a Mikuni carb. I'd read good things about how easy they are > to tune.
> > But all of this is conjecture and opinion based on
> theory. Would love to hear if anyone on the list has played with both carbs > and can comment on the bore size, etc..
> > --- In
> 2cylinderhondas@ yahoogroups. com
> ,
> misterpoopoohead@ wrote:
> > > Hi,
> > I'm curious. Is a specific carburetor necessary to get the 45HP? I > thought you just needed the right cam and head.
> Kev
> > > Sent from my Verizon Wireless BlackBerry
> > > -----Original Message-----
> > > From: "jpro8071"
>
> > > Date: Mon, 26 Apr 2010 18:03:07
> To: 2cylinderhondas@ yahoogroups. com
> > Subject: [2cylinderhondas] Re: Performance upgrades
> > If you are looking to change the exhaust, you might see about tracking > down a Y-port head. They were part of the European/Hawaii package - 45 hp > instead of 36. (You'll also need a different cam and carb to complete the > upgrade.)
> > > The electric fans are nice to have. And
> you can always look at bigger valves and some porting - but be prepared to > have to do some work on the pistons to make room for larger valves dropping > into their space.
> > > Electronic ignition helps avoid
> the point float at higher RPMs. It is possible to fit a Crane optic pick-up > inside where the points go and use an MSD box to fire the coil. You lose the > vacuum advance - or at least we did the way we set it up.
> > > But a LOT of this delivers very small returns for items that are > not all that cheap to do.
> > > I think we get 60 or 70
> hp to the wheels at sea level, but it hasn't been cheap and it hasn't been > that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus > the good fortune to track down some rare parts. Never mind having a sponsor > that did all the machine work and guidance for free.
> > Hope to get out to the drag strip this summer and see what the car does > compared to stock.
> > > --- In
> 2cylinderhondas@ yahoogroups. com
> ,
> "lyletrudell" wrote:
> > I know others have thought of increasing the power of the Honda's for > years.
> > > > But I am new here!
> > > > The brakes will
> be rebuilt first and silicone fluid used.
> > > > Fuel system
> rebuilt and new lines.
> > > > Then I want to do a few performance
> upgrades.
> > > > Since I live in Florida, I want to get rid of the
> heat exchanger, go with a 2 into one header, free flow exhaust.
> > Electric fan instead of the belt driven engine fan.
> Better intake and air cleaner.
> > > > No cutting or anything that
> can't be retuned back to stock.
> > > > Ideas?
> Lyle
-
lyletrudell
- Posts: 56
- Joined: Wed Apr 14, 2010 12:54 pm
Re: Performance upgrades
Thanks for the reply, just dropped my 600 motor tonight.
Lots of good info.
I have built racing 2cycle motors and built my modified Opel-Gt motor that spins to 8,000rpm's. I used a pertronics with the MSD box. Not sure if Pertronics sell something for the Honda. But, like you said the point float is eliminated and the sparkplugs will fire under any conditions.
I don't want to go as far as you did, almost 2HP/cube!!!!
Just better flow in and out, eliminate the points and get rid of the heat exchanger and mechanical fan.
Lyle
Lots of good info.
I have built racing 2cycle motors and built my modified Opel-Gt motor that spins to 8,000rpm's. I used a pertronics with the MSD box. Not sure if Pertronics sell something for the Honda. But, like you said the point float is eliminated and the sparkplugs will fire under any conditions.
I don't want to go as far as you did, almost 2HP/cube!!!!
Just better flow in and out, eliminate the points and get rid of the heat exchanger and mechanical fan.
Lyle
--- In
2cylinderhondas@yahoogroups.com
, "jpro8071" wrote:
> If you are looking to change the exhaust, you might see about tracking down a Y-port head. They were part of the European/Hawaii package - 45 hp instead of 36. (You'll also need a different cam and carb to complete the upgrade.)
> The electric fans are nice to have. And you can always look at bigger valves and some porting - but be prepared to have to do some work on the pistons to make room for larger valves dropping into their space.
> Electronic ignition helps avoid the point float at higher RPMs. It is possible to fit a Crane optic pick-up inside where the points go and use an MSD box to fire the coil. You lose the vacuum advance - or at least we did the way we set it up.
> But a LOT of this delivers very small returns for items that are not all that cheap to do.
> I think we get 60 or 70 hp to the wheels at sea level, but it hasn't been cheap and it hasn't been that easy. Thousands of dollars spent on EFI, custom pistons and cam - plus the good fortune to track down some rare parts. Never mind having a sponsor that did all the machine work and guidance for free.
> Hope to get out to the drag strip this summer and see what the car does compared to stock.
> --- In
2cylinderhondas@yahoogroups.com
, "lyletrudell" wrote:
> > I know others have thought of increasing the power of the Honda's for years.
> > But I am new here!
> > The brakes will be rebuilt first and silicone fluid used.
> > Fuel system rebuilt and new lines.
> > Then I want to do a few performance upgrades.
> > Since I live in Florida, I want to get rid of the heat exchanger, go with a 2 into one header, free flow exhaust.
> > Electric fan instead of the belt driven engine fan.
> > Better intake and air cleaner.
> > No cutting or anything that can't be retuned back to stock.
> > Ideas?
> > Lyle