LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Changing rings have a few qestions..

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Old Jan 14, 2006 | 08:21 PM
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Sevendustx1's Avatar
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Changing rings have a few qestions..

Can anyone tell me if ARP head studs are reusable on a lt1..I forgot the torque specs and sequence as well . Also I was wondering if I should change the rod bolts and have the block honed again. The reason im changing the rings is because fuel was mixing with the oil. Injectors and FPR are new so its gotta be the rings right? I was running the car with 30 pound injectors with a stock tune so im sure that's what caused it. Could I have damaged the cylinders? I hope not
Old Jan 15, 2006 | 09:25 AM
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Re: Changing rings have a few qestions..

Your crankcase dilution problem was originally from either too much fuel, lack of spark or low compression. By ruling out lack of spark and compression you could then focus on too much fuel. Also, don't rule out the injectors just cause they are new. There have been many folks here find problems with new injectors. The injectors can be inspected with the fuel rail lifted and the pump powered up with the prime connector jumped to 12 volts. The rings may now be a problem after the souping of a cylinder.

Instead of guessing, do a leakdown test. A compression test will also indicate a piston to cylinder sealing problem if when a teaspoon of oil is added to the cylinder, the compression reading goes up.

You could also view the inside of the cylinder with a bore scope to see the cylinder walls.
Old Jan 15, 2006 | 09:46 AM
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Re: Changing rings have a few qestions..

I was running the car with 30 pound injectors with a stock tune so im sure that's what caused it.
He already knows exactly why it happened, this is a very good way to blow up a new motor and far too many have done it. IMO yes you might have done cylinder damage. The exessive fuel washes the oil off the bore walls doing a very quick number on the rings and cylinder.
Old Jan 16, 2006 | 05:34 AM
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Re: Changing rings have a few qestions..

Originally Posted by 96capricemgr
He already knows exactly why it happened, this is a very good way to blow up a new motor and far too many have done it. IMO yes you might have done cylinder damage. The exessive fuel washes the oil off the bore walls doing a very quick number on the rings and cylinder.
What the hell are you talking about? He doesn't have a clue. Did you read this?

Originally Posted by Sevendustx1
The reason im changing the rings is because fuel was mixing with the oil. Injectors and FPR are new so its gotta be the rings right?
He thinks the gas got in the oil from the rings being bad. He should test before he pulls anything apart.
Old Jan 16, 2006 | 08:07 AM
  #5  
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Re: Changing rings have a few qestions..

Originally Posted by Sevendustx1
I was running the car with 30 pound injectors with a stock tune so im sure that's what caused it. Could I have damaged the cylinders? I hope not
Sounds to me like after the fact he learned exactly what happened.
Old Jan 16, 2006 | 08:35 AM
  #6  
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Re: Changing rings have a few qestions..

Well running 30#ers instead of 24#ers alone was not the cause of the problem. There is another underlying reason for the flooding. The cylinder that floods enough to get gas in the oil could not have been firing and the miss caused by this would be unmistakable.

Either way it should be tested instead of assuming.
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