I agree with the mineral oil but not the running in method. Lugging the
engine for very long will cause localized ring heating. You'll be better
off "Power Seating" the ring by getting in a high gear, standing on the
throttle until revs build, and snapping the throttle shut. Do this a
half-dozen times and your rings will be on the way to seating.
The real, real best way is to make a jig to hold the ring and lap them in
by hand to the bore they're going to run in. Used to do this to racing
motorcycle engines. When you're not married you can do it in front of the
TV in the living room. Not nearly as much fun in the freezing shop.
-----Original Message-----
From: John Kipping [mailto:johnkipping@inet.net.nz]
Sent: Tuesday, April 02, 2002 6:25 PM
To: Rocky Entriken; JFrymark@aol.com; fot@autox.team.net
Subject: Re: Engine run-in
Yes, absolutely essential not to use a synthetic for bedding in piston
rings. This bedding in is to some extent wearing out - "running in" oil is
best if you can get any, otherwise the cheapest engine oil you can get.
The
quickest way of running in rings is to go up hills in top gear at 30 mph
and
put you're foot hard down on the accelerator, don't overrev and don't
overheat.
John Kipping
----- Original Message -----
From: Rocky Entriken <rocky@tri.net>
To: <JFrymark@aol.com>; <fot@autox.team.net>
Sent: Wednesday, April 03, 2002 12:52 PM
Subject: Re: Engine run-in
> My engine builder (Wayne Snyder, The Able Co.), who swears by the
synthetics
> (so much so that he finally got me switched over after years and years
of
> resistance to change ;-), does say to run it in with regular oil (he
calls
> it "mineral oil") first.
>
> About one autocross with the regular stuff, then change.
>
> The synthetic is "too slippery." It lubricates so well things like
piston
> rings don't seat (or take much longer to do so). That's my
understanding.
> Too slippery is good after everything is happy in the engine.
>
> --Rocky Entriken
>
> ----- Original Message -----
> From: <JFrymark@aol.com>
> To: <fot@autox.team.net>
> Sent: Tuesday, April 02, 2002 6:41 PM
> Subject: Engine run-in
>
>
> > I am completely rebuilding an engine that I was running on Redline
> synthetic
> > oil. I believe a previous thread had a consensus on running in with
> > non-synthetic, then switching over. Other than the cost factor of a
few
> oil
> > changes (not insignificant), any reasons not to start up on synthetic?
Any
> > bad experiences I hope not to repeat?
> >
> > John Frymark
> > VARA EP #67 TR4A
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