My engine builder has me do much the same. The most critical part as far as
I can tell from talking with him is the initial 20-30 minutes at 2000-2500
rpm. Do not let it idle during this time. He uses the Joe Gibbs breakin
oil for the first weekend. I'm then switching out to Redline 40 wt at his
recommendation. We checked the bearings before going to the runoffs and
they looked like new. The engine had at least a dozen weekends on it by
then.
Jim
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf Of Joe Boruch
Sent: Thursday, October 28, 2010 4:11 PM
To: igofaster@att.net
Cc: fot@autox.team.net
Subject: Re: [Fot] engine break-in
Bobby, with my TR3, I first run it in, in the garage, at a high idle
(2000-2500rpms) with Valvoline racing oil for about 20 minutes. Then I
change the oil and filter to a break-in oil like Joe Gibbs or Brad Penn. I
run that for the whole weekend, but an SCCA weekend will not have as much
track time as what you described. I will slowly build up the RPMs during my
first track session up to my usual redline by the end of the session. I am
confident that the parts are all going to play nicely together and if there
was a problem it
would manifest itself quickly. Some have been surprised at how fast I run
it
to speed, but so far have not had a problem.
The times I have watched my machine shop run new engines on the dyno they do
about the same. They warm it up on the dyno, do some mild pulls to get the
temps up then they do WOT pulls to the redline. How is that any better than
running it in on the track in the first session? Joe(B)
---------- Original Message ----------
From: Bobby Whitehead <igofaster@att.net>
To: FoT Triumph <fot@autox.team.net>
Subject: [Fot] engine break-in
Date: Thu, 28 Oct 2010 07:32:32 -0700 (PDT)
After working out a vacuum leak in my intake manifold or carb's or both, I
finally got the GT6 to fire on all cylinders although a little rough. I'm
registered for TWS with CVAR for next weekend. The engine oil is Joe Gibbs
break in oil. So... brand new rebuild. What should be my break in plan for
the weekend? run 4000 rpm for friday and gradually get to 5000 ... 6000 by
sunday? should I run the break in oil through the weekend and change when
we get back home after
(optimistically) I run through the weekend.
Friday is test and tune, open wheel cars and close wheel cars back and forth
for 15 minute sessions, usually 4-5 times out on the track... Saturday,
three 15 minute sessions. Sunday 1 15 minute session, two 20 minute
sessions...
All the best,
Bobby Whitehead
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