Is it time for a rebuild? LT1
Is it time for a rebuild? LT1 I have a 94 Z LT1 6speed with 162,xxx kms on the clock, I run 10w40 to help with oil pressure I run just above the red mark on the oil pressure gauge on hot idle. When the engine is cold I hear what sounds like piston slap, my oil pan gasket, and rear main seal are leaking, I want to swap in a better cam.
Do you guys hear piston slap? MY 04 Colorado has done it since new when cold, so just wondering if this is normal for cold LT1s??? Also what kind of oil pressure do you get on hot idle? I am thinking the engine will have to be pulled to change the oil pan gasket??? And it would make it much easier to do the cam swap as well?
Should I pull the motor replace the gaskets and install a nice cam fresh timming set springs etc.. Or is that just like putting a band aide on a bigger problem?
I wonder if I could just hone the cylinders with a drill and stone through some new rings in, and new bearings with out a over bore and, without turning the crank?
Also when idling hot or cold with he hood up I hear tick, tick, tick, sounds like a old Chevy with solid lifters that need to be adjusted, is this normal sounds from the injectors? Or is my valve train also going out the window??
Do you guys hear piston slap? MY 04 Colorado has done it since new when cold, so just wondering if this is normal for cold LT1s??? Also what kind of oil pressure do you get on hot idle? I am thinking the engine will have to be pulled to change the oil pan gasket??? And it would make it much easier to do the cam swap as well?
Should I pull the motor replace the gaskets and install a nice cam fresh timming set springs etc.. Or is that just like putting a band aide on a bigger problem?
I wonder if I could just hone the cylinders with a drill and stone through some new rings in, and new bearings with out a over bore and, without turning the crank?
Also when idling hot or cold with he hood up I hear tick, tick, tick, sounds like a old Chevy with solid lifters that need to be adjusted, is this normal sounds from the injectors? Or is my valve train also going out the window??
uhhh, just pull it and rebuild it dude.
as far as being able to hone and re ring it, that TOTALLY depends on how much wear the cylinder walls already have. With the condition you're describing it's doubtful. But you can always MEASURE when you get it torn down.
I would rebuild it before you go doing a cam swap and beating on it.
as far as being able to hone and re ring it, that TOTALLY depends on how much wear the cylinder walls already have. With the condition you're describing it's doubtful. But you can always MEASURE when you get it torn down.
I would rebuild it before you go doing a cam swap and beating on it.
Believe it or not, GM spec for hot idle is 6psi. SBCs can run on very little oil pressure. I would get a mechanical gauge to verify your oil pressure. Let those results dictate what you do with the motor next.
