lart951

okay let's hear the hypothesis behind the two major problems with the 944 block # 2 rod bearing failure and # 4 blown HG. I want to compile your experience or theory why these two fail so often.

nics951

I remember reading this on Lindsey website with the 'steam vent kit' about the head gasket. no experience myself with either of the 2 though.

http://www.lindseyracing.com/LR/Parts/STEAMVENT.html

ehall

aren't those almost universally associated with secondary systems failures. I mean, if the rodn gets chomped, ....umm the rest of this is academic! What ate the rod? What actually, of which you have physical ecidence, happened? Not trying to ne a wize ***....thoiugh you KNOW that I would, just asking?

lart951

Why does # 2 suffers oil starvation more than 1,3 & 4? Design?

gruhsy

Something to do with how the oil splashes around in the bottom end?????????????? I had Lindsey put their baffle in my oil pan.

lee101315

The number 2 bearing shares lubrication with the driver side balance shaft and turbo.

Ive found keeping the revs under 6000 keeps the rod bearings happy( and in place )

carlege

I was told its because there is a 90 degree turn in the oil path to the #2 rod bearing

lart951

LR products are great no discussion, but I have seen blown hg even with the steam vent kit, so yes it may add protection but it's not a complete solution, so we know it runs hot, and it might be due to the trapped air pocket, but is this a fact or a theory?

lart951

so keeping the revs under 6k, explain your theory of why?

lart951

interesting, so cross drilling the crank would solve the issue than?

lart951

and that should stop # 2 failure?

ramius665

I don't know that there have been enough people with drilled cranks running them in high RPM/high load (racing for example) over the years to really assess the effectiveness.

Maybe you would enlighten us to your desired use?

gruhsy

No I was just thinking about the oils path...which I do not yet know.

Well now this has been posted:

The number 2 bearing shares lubrication with the driver side balance shaft and turbo.

Your question is a good one.....You know more about these engines than me but now you have me thinking and also wanting to know the possible answer.

I have the steam vent kit and cross drilled crank. If I ever get that failure in the future means they didn't stop the problem

My car is steet use only since Calgary no longer has a track I'm not pushing my car hard like track use does.

I am tempted to put a window in one of my spare oil pans to see what goes on with the engine running. I will be buying a car hoist for my new house in August to fit 3 cars allowing me to look underneath while running. No idea if I would be wasting my time but what the hell...its not going to hurt to try.

reno808

Seriously lart?!? Chris White wrote this whole thing on it before

CyCloNe!

im shocked no "search thread" icon.... your getting soft man!