The drama continues ....
Thread Starter
Burning Brakes
Joined: Aug 2003
Posts: 778
Likes: 11
From: EDH Ca
The drama continues ....
I'm trying diagnose what's going on with my brand new LS6. The engine is mildly built forged unit with heads and cam. The dip stick blows out when the engine revs over 3500 rpm. The air-bridge and the throttle body are full of oil. The PCV system is brand and is correctly installed. And the radiator over flow tank looks like a freaking hot tub with the jets on full blast when the engine is running. Is that normal? I do not have over heating issuses and the oil is clean (not milky).
Help a brother out,
Dave
Help a brother out,
Dave
Le Mans Master
Joined: Aug 2000
Posts: 8,762
Likes: 2
From: Murphy TX
I am very surprised to hear the air bridge is full of oil. The intake I could understand due to the PCV system.
Are the PCV hoses all routed correctly?
How much oil was put in?
Who built your engine?
Did you do a leakdown test as suggested?
Racer
Joined: Jul 2004
Posts: 291
Likes: 0
From: Hauser ID
My 2 pennies worth say:
jacuzzi in overflow=pressurized air in coolant system=blown head gasket (asuming car not overheated and it is boiling)
dip stick acrobatics and oil all over intake=pressurized crankcase=massive blowby=broken rings or hole in piston or maybe the head gasket allowing pressure into oil passages also
jacuzzi in overflow=pressurized air in coolant system=blown head gasket (asuming car not overheated and it is boiling)
dip stick acrobatics and oil all over intake=pressurized crankcase=massive blowby=broken rings or hole in piston or maybe the head gasket allowing pressure into oil passages also
Thread Starter
Burning Brakes
Joined: Aug 2003
Posts: 778
Likes: 11
From: EDH Ca
Originally Posted by yellow01
I am very surprised to hear the air bridge is full of oil. The intake I could understand due to the PCV system.
Are the PCV hoses all routed correctly?
How much oil was put in?
Who built your engine?
Did you do a leakdown test as suggested?
Thanks for the help.
Burning Brakes
Joined: Oct 2003
Posts: 959
Likes: 12
From: California CA
Originally Posted by GeorgeB
or maybe the head gasket allowing pressure into oil passages also
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Burning Brakes
Joined: Aug 2003
Posts: 778
Likes: 11
From: EDH Ca
Update:
The compression test and the leak down test indicate that all is good on the bottom end.
1) The compression on all 8 cylinders was 127-130 psi. GOOD!
2) The leak down had all 8 cylinders at 5% - 8%. GOOD!
3) The car doesn't blow any smoke out of the exhaust. GOOD!
4) I still have oil in the air bridge and throttle body. WTF?
5) The radiator still looks like a jacuzzi tub? WTF?
Any ideas,
Dave
The compression test and the leak down test indicate that all is good on the bottom end.
1) The compression on all 8 cylinders was 127-130 psi. GOOD!
2) The leak down had all 8 cylinders at 5% - 8%. GOOD!
3) The car doesn't blow any smoke out of the exhaust. GOOD!
4) I still have oil in the air bridge and throttle body. WTF?
5) The radiator still looks like a jacuzzi tub? WTF?
Any ideas,
Dave
Burning Brakes
Joined: Feb 2004
Posts: 885
Likes: 0
From: Point Pleasant wv
Originally Posted by GeorgeB
My 2 pennies worth say:
jacuzzi in overflow=pressurized air in coolant system=blown head gasket (asuming car not overheated and it is boiling)
dip stick acrobatics and oil all over intake=pressurized crankcase=massive blowby=broken rings or hole in piston or maybe the head gasket allowing pressure into oil passages also
jacuzzi in overflow=pressurized air in coolant system=blown head gasket (asuming car not overheated and it is boiling)
dip stick acrobatics and oil all over intake=pressurized crankcase=massive blowby=broken rings or hole in piston or maybe the head gasket allowing pressure into oil passages also
