refresh951

Tim - what oil weight? I would be very hesitant to run over the stock redline without a dry sump due to the potential for oil pump cavitation.

turbotim3

I was using a 15/40 mineral oil at the time of problem. I was thinking of upgrading to 15/50 or even 20/50. What maximum rpm would you suggest

Cheers Tim

refresh951

At reasonable ambient temps I would run the 20/50:

https://rennlist.com/forums/6759335-post52.html

It is well documented that there is a weakness in our motors wrt the oiling system. Many theories around but it is clear the risk goes up significantly with thin oil and at rpm's over the stock redline which is 6500 rpm.

turbotim3

At last new parts are finally on the way, so I will be busy putting the engine back together over the next couple of weeks

333pg333

Keep us updated Tim. Always great to see a different perspective on these cars/motors.

You were revving to 8000rpm..?? How??

blade7

When I dropped off the replacement crank I think he was planning less revs after the rebuild. I don't see it holding together for long at 8k without a dry sump setup.

turbotim3

Hi Paul. The engine is nearly back together. Should be done by the weekend and ready for dyno

Cheers Tim

Diver944

Good news Tim, can't wait to see the results

blade7

Good to hear Tim, let me know when you're firing it up, if it's a dry day I'll get my turbo out of hibernation and pop up.

Paul.

turbotim3

Well its finally back together and on the dyno. Fired it up this evening and all seems good, except I seem to have an air leak on the manifold. I will sort this in the morning and then hopefully get down to some mapping.

Cheers Tim

333pg333

Keep it coming Tim. We haven't forgotten you.
Also, I'm sure people would like to see the pics of your manifold etc that was shown elsewhere. Please post them up. :-)

turbotim3

Hi Patrick. Sorry its been a while, but I been busy building an engine to take on the time attack boys over here.

The inlet manifold is pictured on page three having been crackle blacked and fitted to the engine.

I have been mapping my engine this evening. I have made some alterations to it and I'm going to be a little more conservative with both rev's and boost.
I've took the compression ratio up to 9 to 1 and I'm going to map it on the small turbo, boost to back pressure. We would have had it finished this evening but the wastegate pipe split and was to hot to repair. Its looking very promising though, hard on boost at 2750, 500 lbs ft at 3000 and keeps that torque through to 6500 and that's when the pipe broke.

I'll put up a dyno sheet when finished.

Nice to see your cars going well. Great result.

Dutch944

What clutch are you running Tim? And nice numbers already!!

turbotim3

I'm looking at present, I see your having problems clutch wise! If only the flywheel would take a 240mm plate it would be a little easier.

blown 944

What turbo are you running that hits that much torque at 3k? I've never seen that happen before..