LT1 PCV Valve?
Thread Starter
Staging Lane
iTrader: (1)
Joined: May 2010
Posts: 52
Likes: 0
From: Worcester Massachusetts
LT1 PCV Valve? I have a 94 6 speed Corvette with a remote mount turbo setup with 10 lbs of boost and i am noticing that when I come off boost I am getting a little bit of blow by and it seems like some oil is coming out of the dipstick. I have a stock PCV valve and i have tried a one way check valve however the check valve just seemed to make things worse. What should I do to fix this?
Get some valve covers with breathers to let the Excessive crankcase pressure out. Are you using the stock short block? They aren't known for living under boost. You might want to do a cylinder leak down test to see how bad things are.
Thread Starter
Staging Lane
iTrader: (1)
Joined: May 2010
Posts: 52
Likes: 0
From: Worcester Massachusetts
No intercooler the turbo is remote mounted so the distance of the charge pipe sort of acts like an intercooler... I do plan on a meth kit in the very near future I just need this bug ironed out and i need a new scavenge pump as well
On The Tree
Joined: Mar 2006
Posts: 123
Likes: 10
If you remove your oil fill cap and see much smoke puffing out, it might indicate a more serious mechanical problem. Do hope it's not this, but investigate the cause of the blowby and see if you got any cylinders not making cranking or low rpm compression.
You can do a simple cranking test with the coil wire grounded and see if it is even or uneven. Uneven indicates low compression in one or more cylinder. Then do the leakdown tests if you can access the spark plug holes.
On the last run ever with my stock engine, my car still went 12.4 with a blown head gasket and these pistons. So they will still make power with the ring lands cracked.
You can do a simple cranking test with the coil wire grounded and see if it is even or uneven. Uneven indicates low compression in one or more cylinder. Then do the leakdown tests if you can access the spark plug holes.
On the last run ever with my stock engine, my car still went 12.4 with a blown head gasket and these pistons. So they will still make power with the ring lands cracked.
Thread Starter
Staging Lane
iTrader: (1)
Joined: May 2010
Posts: 52
Likes: 0
From: Worcester Massachusetts
If you remove your oil fill cap and see much smoke puffing out, it might indicate a more serious mechanical problem. Do hope it's not this, but investigate the cause of the blowby and see if you got any cylinders not making cranking or low rpm compression.
You can do a simple cranking test with the coil wire grounded and see if it is even or uneven. Uneven indicates low compression in one or more cylinder. Then do the leakdown tests if you can access the spark plug holes.
On the last run ever with my stock engine, my car still went 12.4 with a blown head gasket and these pistons. So they will still make power with the ring lands cracked.
You can do a simple cranking test with the coil wire grounded and see if it is even or uneven. Uneven indicates low compression in one or more cylinder. Then do the leakdown tests if you can access the spark plug holes.
On the last run ever with my stock engine, my car still went 12.4 with a blown head gasket and these pistons. So they will still make power with the ring lands cracked.
Trending Topics
On The Tree
Joined: Mar 2006
Posts: 123
Likes: 10
Did you do the cranking test that I suggested?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
I have a 94 6 speed Corvette with a remote mount turbo setup with 10 lbs of boost and i am noticing that when I come off boost I am getting a little bit of blow by and it seems like some oil is coming out of the dipstick. I have a stock PCV valve and i have tried a one way check valve however the check valve just seemed to make things worse. What should I do to fix this?
Regarding your comment on the length of pipe acting as an intercooler, I don't agree. With 10lbs of boost, you need to cool the intake charge. Def get an intercooler and/or meth. You are on borrowed time with a stock shortblock.
Thread Starter
Staging Lane
iTrader: (1)
Joined: May 2010
Posts: 52
Likes: 0
From: Worcester Massachusetts
You need more crank evac but as mentioned, you may have a mechanical issue. The pressure needs somewhere to go and since you have a closed system, it will head for the dipstick or out of the engine seals. I run a MM pcv can with one breather on the VC. No issues.
Regarding your comment on the length of pipe acting as an intercooler, I don't agree. With 10lbs of boost, you need to cool the intake charge. Def get an intercooler and/or meth. You are on borrowed time with a stock shortblock.
MightMouse catch can. PCV valve is removed from intake, tube goes to dirty side of can. From the can with the PCV/check valve, a line runs to the port below the throttle body. Once valve cover has an open breather, other is closed.
I don't have a pic handle but will take one when I am back home.
I don't have a pic handle but will take one when I am back home.