LS1TECH - Camaro and Firebird Forum Discussion - ENGINE GURU'S--Engine Leakdown Expectations.

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ls427ray

Mar 10, 2012 03:38 PM

ENGINE GURU'S--Engine Leakdown Expectations.

ENGINE GURU'S--Engine Leakdown Expectations.
on a new, just broken-in engine with boost, what are normal acceptable leakdown numbers?

machinistone

Mar 10, 2012 09:35 PM

On a fresh motor with the rings seated properly 3-4%, couple more if the ring gaps are setup large for boost, with gapless rings you can see less than that.

racecar

Mar 12, 2012 02:01 PM

It's important that they are all consistant. If most are 3-4 and one is 8%, you have bad rings on one.

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