'90 Nissan 240SX +SR20DET - Entertaining Trades
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The Cyber Brain
Joined: Feb 2007
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Blow-by is caused when compression in the cylinder leaks past the rings. In my case, my rings only leak under boost. Only when I hit boost, because of the rings being tired, it leaks past the rings and pressurizes the crankcase. This causes the oil dipstick to pop out in some cases. I have installed an oil catch can to catch some of the blow-by gases, but the engine does need a rebuild. However, the car drives perfectly fine in and out of boost.
Like I said, this is a great project car, ready for someone to take it to the next step.
Bump.
Like I said, this is a great project car, ready for someone to take it to the next step.
Bump.
Last edited by Superluminal; Sep 4, 2007 at 06:36 PM.
Shakotan/Hippari life.
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Blow-by is caused when compression in the cylinder leaks past the rings. In my case, my rings only leak under boost. Only when I hit boost, because of the rings being tired, it leaks past the rings and pressurizes the crankcase. This causes the oil dipstick to pop out in some cases. I have installed an oil catch can to catch some of the blow-by gases, but the engine does need a rebuild. However, the car drives perfectly fine in and out of boost.
Like I said, this is a great project car, ready for someone to take it to the next step.
Bump.
Like I said, this is a great project car, ready for someone to take it to the next step.
Bump.
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Determined to be famous, destined to be infamous.
-'03 GSX-R 750
Determined to be famous, destined to be infamous.
-'03 GSX-R 750
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check your pcv valve and see if you are getting sufficient flow out of your block. you will ALWAYS have blowby, but with a bad pcv valve it can get worse. does your oil dipstick ever blow out and spew oil everywhere?
most of the time "blow-by" isnt whats its cracked up to be and can be fixed easily, it doesnt necessarily mean you have bad rings, just too much pressure in your block.
most of the time "blow-by" isnt whats its cracked up to be and can be fixed easily, it doesnt necessarily mean you have bad rings, just too much pressure in your block.
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Blow-by is caused when compression in the cylinder leaks past the rings. In my case, my rings only leak under boost. Only when I hit boost, because of the rings being tired, it leaks past the rings and pressurizes the crankcase. This causes the oil dipstick to pop out in some cases. I have installed an oil catch can to catch some of the blow-by gases, but the engine does need a rebuild. However, the car drives perfectly fine in and out of boost.
Like I said, this is a great project car, ready for someone to take it to the next step.
Bump.
Like I said, this is a great project car, ready for someone to take it to the next step.
Bump.
oops, didnt see this post.
check your pcv valve, all engines have some form of blowby right out of the box, thats why you have a pcv.
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The Cyber Brain
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Shakotan/Hippari life.
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i have a clean white coupe with minor body flaws. its recently rebuilt with all the paper work... new timing accembly, pistons, all seals and whatever else they did to rip me off for 3 grand... runs perfect and 99% of everything works with 9.5/10 int and 7.5/10 ext. white with s12 rims and newish tires. cold a/c and pwr everything.
let me know if your interested
let me know if your interested
