When I use an oil cooler there is no burnt or varnish residue on the inside of the engine. However all the engines I have pulled apart, and there have been quite a few, have burnt or varnish residue on the inside of all the cases. So what does that say about regular 10W30 or even 10W40, it seems to be losing its viscosity while being baked on the inside of the engine.
Wear produces heat, and 30 + year old engine parts are going to cause heat. How many of us have used used parts when reassembling their Honda 600 engine.
I have, but I measured the part and made a decision on what was to warn to use again. Honda provides some of these specs, but other areas are left to the knowledge of the person making the repairs. So, keep things to the closest tolerances you can and keep the engine operating at the correct temp. Then change your oil often.
Bill
> -----Original Message-----
> From:
> anzhonda600owners@yahoogroups.com
> [mailto:anzhonda600owners@yahoogroups.com]
> On Behalf Of
> cotton
> Sent:
> Sunday, April 27, 2008 4:08 PM
> To:
> anzhonda600owners@yahoogroups.com
> Subject:
> Re: [anzhonda600owners]
> engine oil
> Am I understanding this right? The n600 is a roller motor and 20/50 oil > is bad for any engine?
> > ----- Original Message -----
> > From:
> > Greg
> > To:
> > anzhonda600owners@ yahoogroups. com
> > Sent:
> > Sunday, April 27, 2008 4:06
> > PM
> > Subject:
> > RE: [anzhonda600owners] engine
> > oil
> > Hi
> > Bill,
> > That makes
> > sense, didn�t know it was roller mains. Given how it climbs when cold > > should be very suitable for a modern 10w40 or even 5w40/5w50 > > type.
> > Greg.
> > From:
> > anzhonda600owners@ yahoogroups. com
> > [mailto:anzhonda600 owners@yahoogrou ps.com]
> > On Behalf Of
> > billmyong@earthlink .net
> > Sent:
> > 27 April 2008 18:26
> > To:
> > anzhonda600owners@ yahoogroups. com
> > Subject:
> > RE: [anzhonda600owners] engine oil
> > Greg;
> > Oil pressure is normally about 8 to 10
> > psi at 3K rpm after it is warmed up (greater speed does not seem to increase > > psi ). Cold it will climb to 35 psi.
> > At idle 1100 rpm it will read
> > Zero. It's is because the bearings are all roller and the oil > > pump pushes all the oil (flow) through the engine every minute at > > idle.
> > Bill
> > > -----Original
> > > Message-----
> > > From:
> > > anzhonda600owners@ yahoogroups. com
> > > [mailto:anzhonda600 owners@yahoogrou ps.com]
> > > On Behalf Of
> > > Greg
> > > Sent:
> > > Saturday, April 26, 2008 5:34 AM
> > > To:
> > > anzhonda600owners@ yahoogroups. com
> > > Subject:
> > > RE:
> > > [anzhonda600owners] engine oil
> > > The more
> > > modern the oil the better. The oil specified for these engines was > > > of the available choice at the time, grades like 10w40 and 5w50 didn�t > > > exist back then.
> > > I�m not
> > > familiar with the engine, how tight are the tolerances and how well does > > > it keep oil pressure at idle? If the answer to both is very good, > > > then I�d go with a 10w40. Don�t worry about if it�s fully, part or > > > not synth, as you would be well recommended not to push extended service > > > intervals which is where the synth comes into it. If changing oil > > > regularly mineral oil won�t have had chance to degrade but you will be > > > getting rid of all the contaminants much more often. So go with the > > > best grade you can get cheaply in something like a 10w40 or 5w40/5w50.
> > > If the
> > > engine struggles for oil pressure at idle and has poor machining, you will > > > need a thicker oil to keep oil pressure up � so try a 15w40 or if it comes > > > to it the dreaded 20w50 (try to get a good grade, most of the latter is > > > sludge). The thinner the oil the better as it gets round faster and > > > protects from start up sooner and has less frictional drag, but if the > > > engine�s clearances are very poor thin oil will leak out from the journals > > > etc too much and you�ll lose oil pressure at idle, hence my question > > > above.
> > > I
> > > wouldn�t worry about an oil temp sender as much as fitting a big oil > > > cooler behind the gril. That would be a great thing to do on an air > > > cooled engine and coupled with a modern thin oil should have your engine > > > way better protected and running better too as lower drag and lower heat > > > build up. But oil temp sensors normally sit in the sump, anywhere > > > where the oil draining back down flows over them and > > > pools.
> > > Greg.
> > > From:
> > > anzhonda600owners@ yahoogroups. com
> > > [mailto:anzhonda600 owners@yahoogrou ps.com]
> > > On Behalf Of
> > > whitessports39
> > > Sent:
> > > 26 April 2008 13:27
> > > To:
> > > anzhonda600owners@ yahoogroups. com
> > > Subject:
> > > [anzhonda600owners] engine oil
> > > WHAT IS EVERYONES FEELING ON SYNTHETIC OIL IN THESE LITTLE ENGINES?LETS
> > > NOT FORGET THE TRANNY SHARES THE SAME. BEST PLACE FOR OIL > > > TEMP.SENDER?
> > > REBUILT TOP OF ENGINE WITH OVERSIZE PISTONS BUT OUTER PART > > > HITS HEAD > > > ANYONE ELSEHEAR OF > > > THIS?
> > No virus found in this incoming message.
> > Checked by AVG.
> > Version: 7.5.524 / Virus Database: 269.23.5/1400 - Release Date:
> > 4/27/2008 9:39 AM
