how does severe blowby get fixed?

[meangreens14]

hey folks i have a major issue of blow-by in my redtop. i would like to clean it (cylinders and intake manifold) out so i can sell the car as a whole instead of parting it out. what are some options i have for a good cleaning? i am 85% positive it will not happen again, because i found that i had my crank case vacuum lines run incorrectly and have since remedied that situation. please let me know guys and gals. THANKS!

[boro drift]

Blow by is caused by bad piston rings. The only way to fix it is to re-ring the bottom end. But, if the cylinders are worn more than .005", then you have to bore the block and replace the pistons, basicly a total rebuild. If you had a breather problem and that was it, I wouldn't worry about it. DO NOT TRY TO CLEAN THE CYLINDER WALLS! Any residual oil in there will get used, (if the rings are good).

[AZhitman]

Rebuild.

Or at least tell the buyer it needs a rebuild.

[meangreens14]

Rebuild.

Or at least tell the buyer it needs a rebuild.

thanks for the words i didnt want to hear guys!!! hahaha. but really i apreciate it. so, you think if i gotta sell the car fast, just part it out. unless, of course, the buyer wants to rebuild.... would that be wise to do?

[supreamS14]

I was getting blow-by badly when I had my valve shims out of order. I put them in order, Now no blow-by! I cleaned my intake mani with a wire brush and carb cleaner. You could do it the lazy way and induct seafoam or similar products threw the intake/vacuum. That's how the pro mechanics do it.

[Blown240sx]

Blow by can be also caused by not properly Venting the crankcase and head.