blow by
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Joined: Jul 1999
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Blow by means cylinder compression is getting past the rings. You can usually see it by looking in the valve cover through a hole like the PCV. If excess pressure builds up in the crankcase then it can cause a lot of oil leaks plus the engine will be down on power.
The only way to fix blow by is with a rebuild. You need new piston rings. The cylinder walls could be out of round also requiring boring out the engine.
Looks like a good time to consider a 350.
The only way to fix blow by is with a rebuild. You need new piston rings. The cylinder walls could be out of round also requiring boring out the engine.
Looks like a good time to consider a 350.
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blackz281le
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