SPEC/3B Flywheel, and now break in recomendations...

[Jim Green]

On 4/15/06, Cody Forbes <cody at 5000tq.com> wrote:
>
> Won the auction today for $50.50. Got a 3B flywheel, plus a good/used 3B
> disc and a good/used 3B PP that I'll hang on to as emergency spares. I'd say
> it was a decent deal! Now shipping on all that stuff is probably be costly,
> but oh well. With any luck I'm looking at putting the engine in this coming
> weekend!! Really getting antsy about it now! Looking at dyno times availible
> during the first week of May.
>
>
> Our street engines usually get a much nicer treatment, 500 miles of light
> use, no more then 4000rpm or so, and never ever is WOT condoned. After 500
> miles they get an oil change, and we recomend to the customer to take it
> easy for another 250, but don't demand it.
>
> All of our cars, both race and street run exclusively Castrol GTX 20-50
> weight oil, so this is where most of my questioning is. I'd like to run
> Mobil 1, but I am told never to break in an engine on synthetic, to start
> with dyno, then go synthetic at the first oil change. I was thinking of
> running the Castrol 20-50 for 500 miles of very light use, then going Mobil
> 1 and call the breaking done. What do  you guys think about the procedure
> (and don't try to convince me on the "run it WOT at 30psi first thing is
> best for it" theory)? When I do go Mobil 1, what grade should I be running
> in 75-100 degree weather? The P-cars always run thick oil, but they are oil
> cooled of course and also have 100 thousand potential leak points, so I have
> a feeling I should be a bit thinner with my Q-car.
>
>
Here's what I did in the 20vt that had all new parts and fresh bores.  Put
in the cheapest 10w30 I could find.  Started it, brought it up to temp and
went for a relaxed spin around the burbs.  Came home and drained it.  Put in
some more cheap 10w30 and drove it till it stopped smoking somewhere around
600 miles.  Boost was limited to about 13 psi, and every once in a while it
would get a quick WOT to redline.  Then I changed the oil to cheap 10w40 and
brought the boost up to 20psi and regularly let it see 8000 rpms.  THis
happened till about 1200 miles, I then switched to Rotella T syn 5w40 and
brought the boost up to 29 psi and headed to the dyno.  The motor has
perfect compression and very low leakdown.  It does use some oil, but that's
to be expected on a 550 hp 2.3L motor;) 20w50 is pretty thick oil and you
might find that the motor runs cooler and better on a 15w40 or something.

--
Jim Green
'89 90 GT35R quattro
'89 80q
http://www.mswanson.com/~jgreen/car_home.html