LS7 Oil in coolant
10-23-2014, 04:27 PM
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LS7 Oil in coolant I have a problem that I hope you can help with.
I have crate LS7 Engine that I bought from a sponsor on this site some five years ago and had shipped to the UK, the car has only done 2500 miles and is my pride and joy bit of a garage queen really,recently I have found that I'm loosing a small amount of oil thats finding its way into the header tank, even though I clean it out so its clean it still re appears after 50 miles.
The engine runs fine and has 70-80psi of oil pressure, also I dont have water in the oil and I dont have a PAS cooler or gearbox cooler either so i dont have that worry.
I did have an issue 1000 miles ago when the engine started tapping and I found that its didnt have the lash caps installed to protect the titanium valves.I only had to remove one cylinder head and replace one valve so I don't believe I dropped much if any oil into the water ways.
Any ideas as I'm thinking porous or cracked block at the momment whats your thoughts or am I missing something obvious.
Kind regards
Carl
I have crate LS7 Engine that I bought from a sponsor on this site some five years ago and had shipped to the UK, the car has only done 2500 miles and is my pride and joy bit of a garage queen really,recently I have found that I'm loosing a small amount of oil thats finding its way into the header tank, even though I clean it out so its clean it still re appears after 50 miles.
The engine runs fine and has 70-80psi of oil pressure, also I dont have water in the oil and I dont have a PAS cooler or gearbox cooler either so i dont have that worry.
I did have an issue 1000 miles ago when the engine started tapping and I found that its didnt have the lash caps installed to protect the titanium valves.I only had to remove one cylinder head and replace one valve so I don't believe I dropped much if any oil into the water ways.
Any ideas as I'm thinking porous or cracked block at the momment whats your thoughts or am I missing something obvious.
Kind regards
Carl
10-23-2014, 11:11 PM
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So there are no oil/ other coolers that go into the radiator tanks correct?
It could be a/the head gasket that didn't seat properly when the head came off. Have you tried cylinder leak down tests to make sure cylinders are holding their compression?
It could be a/the head gasket that didn't seat properly when the head came off. Have you tried cylinder leak down tests to make sure cylinders are holding their compression?
11-10-2014, 03:05 AM
#4
When you had the head off, did you blow out all the head bolt holes?