Thread: Too much crankcase pressure, novice engine builder

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The first thing you need to do in a case like yours is to do a cylinder leakage test to see where your problem begins-----------

Also-what lube did you use on the rings/pistons when you built the block???

I've done a compression test, results in previous reply. Is there a difference between that and a cylinder leakage test?

Lube used for assembly was Lucas assembly lube:
https://www.autozone.com/greases-and...4oz/692400_0_0

Originally Posted by NegativeZero

Is there a difference between that and a cylinder leakagage test?

Yes, the cylinder leakdown test tells you the ability of each cylinder to hold pressure over a short time. Here's an explanation (Jerry or 36 sedan may have added info or a different process) - https://www.youtube.com/watch?v=WHli-wLy9_o

Here's a tester from Summit, but note you can find them on Amazon, e-Bay or other with widely varying prices - https://www.summitracing.com/parts/w...kaAsF4EALw_wcB

Originally Posted by NegativeZero

A pressure gauge on the oil filler tube sounds like an interesting idea, definitely going to try to rig that up.

LOL just a crazy idea, looking for hard data. I'm not sure how you're going to keep it in place at >6K, but it'll be interesting!

I'll definitely be purchasing one of these devices in the near future.

As for the pressure gauge, I'll hold it on with my hand if I have to. I'm all down for hard data over sitting here and speculating all day on the computer.