GeorgeNZ

Whats the recommended practice after replacing mains/ rod bearings and rings?

I will have 5 days between getting the car mobile and my next race

tia

Ski

If the cylinders were bored and finished, I like about 200-500 miles on a turbo to get things seated. But if you just put in new rings in the old bores, probably just a few hours of run time, cool down and do it again.

George D

Run some dyno cutting oil for a few hundred miles. Drain and go with whatever syn you like.

G

JET951

synthetic is a mistake for our cars. please dont use it

nick_968

Why is synthetic a mistake? What are you using??

Porsche-O-Phile

Bounce it off the rev limiter about a dozen times. Should take care of things nicely. . .

J/K. I think running 300-500 miles at varying engines speeds should help.

And what's this stuff about synthetic being bad? Poppycock! The benefits of synthetic are well documented. I use synthetic motor oil, gear oil and even synth. ATF in the P/S system on all my cars. Never a problem.

JET951

fully synthetic oil. what do you guys think that is? do you think it is all made in a test tube? what percentage mineral oil doi you think is used to make FULLY SYNTHETIC.

MPD47

I generally get it running, check for leaks, etc, etc. Running regular dino oil. Head out on the road 25% throttle in various gears 10-20 times, let it wind down, 50% 10-20 times, let it wind down, 75% 10-20 times let it wind down. Works well for sealing rings. Then switch to your favorite synthetic.

blodstrupmoen

My car runs on LE singelgrade 50 oil paraffin based. recomended on track cars and in summertime
.. Lubrication engineers

don`t like cold days though

nick_968

I have always been told that dino is not resistant enough to heat and when the turbo gets very hot it will burn on the turbo shaft. This is a very good reason to use synthetic in a high performance turbo engine as it is much more resistant to high temps produced when on boost all the time. This advice come from someone who knows from experience and would always use dino where possible but it just doesnt work for high boost applications.

thingo

Synthetics are optimised for the demands of the motor industry, low emisions, fuel economy and infrequent oil changes, that is why it is so thin, our engines are not designed for those viscosities, particularly in hot climates.

JET951

well put Rod

333pg333

Why do you think Porsche uses straight 50w (brand S)in their racing programs not the big name (brand M) that is advertised on some of their cars? Advertising sells and you guys keep buying. The fact that Oil is used as a lubricant is only partially it's purpose...

special tool

I am liking Pennoil's 20/50 dino lately.......
Holds oil pressure nicely when hot.

333pg333

"KE-RECT"!