HELP!!! Car is consuming coolant and has a knock!!
When my head gasket blew, i had no choice but to drive 50 more miles on the motor, because a tow cost more than a new engine in san diego. So i ended up with a hole in a piston, warped heads, cracked block and blue bearings. After all that, there was still NO noise from the bottom end. The only noise was from a dead lifter. They don't like water. So I'm thinking you may have a dead lifter. If you had a bent rod, you would have less compression in that cylinder, not more.
As far as iron blocks go, I'm happy with mine. I bought my LQ4 as a complete engine, but i wish i had just bought a shortblock and installed the LS3 top end from the beginning. A complete LS3/L76/L99 top end cost less than a FAST intake alone and makes a lot more power than a FAST with stock 243's or 317's.
As far as iron blocks go, I'm happy with mine. I bought my LQ4 as a complete engine, but i wish i had just bought a shortblock and installed the LS3 top end from the beginning. A complete LS3/L76/L99 top end cost less than a FAST intake alone and makes a lot more power than a FAST with stock 243's or 317's.
So you have a lq4 6.0 iron block with ls3 top end?
When are you going to get that head off for inspection?
It is either coolant in the cylinder causing the higher compression like you said, or sometimes pressure can be blown from one cylinder into the next if the gasket is blown between cylinders. I think the first scenario is likely your answer though.
When are you going to get that head off for inspection?
When are you going to get that head off for inspection?
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rebuild it!
make sure theres no scoring on the cylinder wall..replace the piston, re-hone the cylinder if you cant see cross hatch, helps for new piston rings to seal. did this exact thing when i chipped a piston on my 6.0 lq4.
make sure none of the valves in the cylinder head are leaking by spraying brake clean in the intake side, and exhause side of that cylinder..reason i say brake clean is because its thinner than water and will tell you if your valves are leaking.
make sure theres no scoring on the cylinder wall..replace the piston, re-hone the cylinder if you cant see cross hatch, helps for new piston rings to seal. did this exact thing when i chipped a piston on my 6.0 lq4.
make sure none of the valves in the cylinder head are leaking by spraying brake clean in the intake side, and exhause side of that cylinder..reason i say brake clean is because its thinner than water and will tell you if your valves are leaking.
