Re: Engine Question

friend · Post by **friend** » Fri Oct 30, 2009 1:13 am

Josh;
    A stretched or lose chain will cause this. It happens because the chain travels in just one direction and pulls to one side when ware and slack in the chain push it to one side of the roller over time.
     Check the article at the
http://autos.groups.yahoo.com/group/anzhonda600owners/    site, under
How to change out a cam chain
.. in the FILES area. to check your cam chain while it's in your engine.
Bill

> -----Original Message-----
> From:
> 2cylinderhondas@yahoogroups.com [mailto:2cylinderhondas@yahoogroups.com] > On > Behalf Of > Josh > Sent:
> Thursday, October 29, 2009 10:45
> PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject:
> [2cylinderhondas] Re: Engine Question
> I forgot to ask but does anyone know why the chain roller guide wear down > on one side, I have noticed that issue with a few engines I have worked on and > have had to replace them. I popped off my valve cover today to check things > out and noticed that my roller is starting to wear down on one side. Is this a > common issue with these engines?
> --- In
> 2cylinderhondas@ yahoogroups. com
> ,
> goinhm@... wrote:
> > To answer your question
> .....no.
> > While boring can make a difference, if you are just
> boring the standard
> > increments ( 0.25 mm or 1 mm), that is so
> insignificant compared to the
> > piston diameter of 74 mm that it will
> not make a noticeable difference.
> > BTW....what do you mean
> when you say it was bored 5 over? Honda never
> > made a piston which was
> 5 over.
> > The oversize pistons were in 0.25 mm increments up to 1.0 mm > maximum.
> > Each 0.25 mm increment is slightly under 0.010
> inches.
> > happy motoring,
> > Dale
> > Just
> about a week ago I found out more info on my engine from the person
> who owned it the last 20+ years after tracking him down. I was told that
> > sometime in the 80's it was fully rebuilt by a Honda tech with new > parts, > > pistons, valves, oil pump ect. Also I was told that it was > bored out 5 over! I > > wanted to know if boring out the cylinders makes > a difference such as in > > performance, power and such. Out of all the > other 600 engines I have worked > > on this engine seems to run the > smoothest. Basicly I was asking if "boring" > > the cylinders makes a > difference or not.

friend · Post by **friend** » Sun Nov 01, 2009 3:37 pm

Charles;
So right you are, and by no means would a new chain be a fix-all if other parts have wear. A flash light can give some light on how good the rollers are. But, if everything looks good, this is a maintenance action that should be done at least every 45K. Heat will destroy the rubber components on the insides of the engine. Rubber is no different from the oil it is a compound of, and both can be damaged by heat. And, not to beat this drum again, but this is why it is so important to keep clean oil in your engine and keep your engine cool.

> -----Original Message-----
> From:
> 2cylinderhondas@yahoogroups.com [mailto:2cylinderhondas@yahoogroups.com] > On > Behalf Of > Charles M > Sent:
> Sunday, November 01, 2009 3:04
> PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject:
> RE:
> [2cylinderhondas] Re: Engine Question
> If it were me I would change the rollers and the chain. Especially if you > do not know the condition of the rollers as more damage will occur and the > cost for repair will be higher.
> CM
> To: 2cylinderhondas@ yahoogroups. com
> From:
> kuran@optusnet. com.au
> Date: Mon, 2 Nov 2009 09:57:53 +1100
> Subject:
> Re: [2cylinderhondas] Re: Engine Question
> Would I be correct in saying that if a timing chain is
> worn and maybe rattling, that the guides, rollers and possibly tensioner would > be worn too or is it possible that just the chain is worn?
> Mark.
> > ----- Original Message -----
> > From:
> > billmyong@earthlink .net
> > To:
> > 2cylinderhondas
> > ;
> > Anzhonda600owners
> > Sent:
> > Monday, November 02, 2009 9:37
> > AM
> > Subject:
> > RE: [2cylinderhondas] Re:
> > Engine Question
> > Honda had both, full chain and split.
> > there are a couple of chains that can be adapted by shortening them.
> > Miles has one and I have another and I am sure there are others. The > > chain comes as one full chain. The split links have to be > > purchased separately. Taking a few links out is part of creating the > > needed cam chain.
> > Bill
> > > -----Original Message-----
> > > From:
> > > 2cylinderhondas@ yahoogroups. com
> > > [mailto:2cylinderho ndas@yahoogroups .com]
> > > On Behalf Of
> > > Charles M
> > > Sent:
> > > Sunday, November 01, 2009 12:49
> > > PM
> > > To:
> > > 2cylinderhondas@ yahoogroups. com
> > > Subject:
> > > RE:
> > > [2cylinderhondas] Re: Engine
> > > Question
> > > Interesting,
> > > The cam chain for my 1967 S800 is split as shown in the > > > maintence manual and has a master link. Why would it not be ok for a honda > > > two cylinder engine?
> > > CM
> > > To: 2cylinderhondas@ yahoogroups. com
> > > From:
> > > zayspeed@msn. com
> > > Date: Sun, 1 Nov 2009 20:32:32 +0000
> > > Subject:
> > > [2cylinderhondas] Re: Engine Question
> > > What you seek is not approved! they would have you
> > > split the cases! yes it is all out there at your local Honda Motorcycle > > > Shop or on line @ powersedge.com or K&L.com under "Cam Chain & > > > Master link" should be 116 link P.N.12-8116 & 12-0409 master link for > > > K&L. Cross ref. #,s to Honda Motorcycle part # and model / year bike > > > to use that source (hint CB400 or many other with same part #). Go ahead > > > just 1 person ask and I will post compleat "How To Do It" Zay Speed > > > Motorcycle style It's long!
> > > :::::::::::: ::::::::Zay
> > > --- In
> > > 2cylinderhondas@ yahoogroups. com
> > > ,
> > > goinhm@... wrote:
> > > > What you have described is how it is
> > > done. Honda used to sell a cam chain
> > > > which was split and included
> > > a master link. You would cut the old chain,
> > > > attach the new chain,
> > > cycle it through manually, and then attach the
> > > > master link. Then
> > > you would setup the mechanical timing.
> > > > You are on the
> > > right track.
> > > > Good luck,
> > > > Dale
> > > > I
> > > have an older computer and could not read the file on the cam chain
> > > > change. Has anyone ever replaced the cam chain with the engine > > > not torn down?
> > > > It looks like it could be done by attaching the
> > > new chain to the old and
> > > > drawing the new chain into the engine.
> > > Then the two ends could be joined by
> > > > spinning the
> > > rivet.
> > > Bing brings you maps, menus, and reviews organized in one place.
> > > Try
> > > it now.
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