Possible crankcase pressure problems???
#1
Possible crankcase pressure problems???
Hi all. I’ve Recently had a bottom end built of a 1.6 with cp pistons and some rods. New rings bearings etc. having a problem where turbos are leaking oil from the compressor side. Had a precision 5557 on there at first and it was leaking bad. Rebuilt it. Same thing happens. Bought a cheap cx racing turbo. And it’s still leaking from the compressor side. Drain and feed lines are completely vertical. Stock Pcv system was replaced with a catch can. Also no oil in the exhaust port of the head. That’s my reason for thinking crankcase pressure is to high. And not allowing oil to drain properly. I’ve attached a picture to sort of be able to see catch can setup. -10an fittings welded on the front right side and rear left side.I can take a better one after work. Any insight would be appreciated. Thank you.
#7
Even at just idle it does it. would not having a vented setup make that much of a difference. The car hasn’t seen any rpms above 3000 yet. No boost. Hasn’t even been driven. Been trying to figure this problem out for the last month. Finallly figured I’d just ask here and see if anybody knew.
#15
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Or just run both sides to a vented can.
The secret is not a secret. It's the venting part. Engines need venting. Even Briggs & Stratton have venting. You have never seen an engine without venting. Ever. You might not have understood where it was venting, but it was venting.
The secret is not a secret. It's the venting part. Engines need venting. Even Briggs & Stratton have venting. You have never seen an engine without venting. Ever. You might not have understood where it was venting, but it was venting.
#18
The OEM standard for dual catch can is back to the vacuum source, while the PCV and IM takes it to non vented catch can
http://www.radiumauto.com/Catch-Can-...ata-P1180.aspx
http://www.radiumauto.com/Catch-Can-...ata-P1180.aspx
#20
This is my dual catch can setup
Passenger side: PCV bung tapped for hose fitting (prevents weeping leak) -> Catch can -> Hose to PCV valve -> Another hose to Intake port from PCV -- This puts the PCV inline between the catch can and the intake manifold. Prevents pressurizing the catch can and keeps a large ID for the vacuum hose to slow airflow
Driver side: Valve cover port --> Catch Can -> Port on filter @ turbo
Passenger side: PCV bung tapped for hose fitting (prevents weeping leak) -> Catch can -> Hose to PCV valve -> Another hose to Intake port from PCV -- This puts the PCV inline between the catch can and the intake manifold. Prevents pressurizing the catch can and keeps a large ID for the vacuum hose to slow airflow
Driver side: Valve cover port --> Catch Can -> Port on filter @ turbo