Anyone Rebuild a high mileage LS1?
11-14-2001, 10:53 AM
#2
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Re: Anyone Rebuild a high mileage LS1? I have seen the innards of about twenty motors.
The nitrous motors tend to look the most ragged out. The crosshatching is gone sometimes in the cylinders, bearings showing signs of detonation and heat (and showing a lot of copper).
My original motor looked great. Just deglazed the cylinder walls, NO HONE. <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />
The nitrous motors tend to look the most ragged out. The crosshatching is gone sometimes in the cylinders, bearings showing signs of detonation and heat (and showing a lot of copper).
My original motor looked great. Just deglazed the cylinder walls, NO HONE. <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />
11-14-2001, 01:08 PM
#3
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Re: Anyone Rebuild a high mileage LS1? What's the latest on ability to bore these engines for a rebuild. I seem to remember the '98's couldn't do any boring so they increased the thickness of the sleeves but still couldn't be bored like the old blocks (.030" or whatever). Will everyone have to buy new blocks at rebuild time? <img src="images/icons/confused.gif" border="0">
11-14-2001, 01:16 PM
#4
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Re: Anyone Rebuild a high mileage LS1? [quote]Originally posted by rom3:
<strong>What's the latest on ability to bore these engines for a rebuild. I seem to remember the '98's couldn't do any boring so they increased the thickness of the sleeves but still couldn't be bored like the old blocks (.030" or whatever). Will everyone have to buy new blocks at rebuild time? <img src="images/icons/confused.gif" border="0"> </strong><hr></blockquote>
You can get the block re-sleeved.
<strong>What's the latest on ability to bore these engines for a rebuild. I seem to remember the '98's couldn't do any boring so they increased the thickness of the sleeves but still couldn't be bored like the old blocks (.030" or whatever). Will everyone have to buy new blocks at rebuild time? <img src="images/icons/confused.gif" border="0"> </strong><hr></blockquote>
You can get the block re-sleeved.
11-14-2001, 03:31 PM
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Re: Anyone Rebuild a high mileage LS1? [quote]Originally posted by rom3:
<strong>What's the latest on ability to bore these engines for a rebuild. I seem to remember the '98's couldn't do any boring so they increased the thickness of the sleeves but still couldn't be bored like the old blocks</strong><hr></blockquote>
The newer blocks are reccommended no more than 0.010 over stock. I think they made that change in 2000?
I was planning on a new block for my stroker, they really aren't that expensive.
<strong>What's the latest on ability to bore these engines for a rebuild. I seem to remember the '98's couldn't do any boring so they increased the thickness of the sleeves but still couldn't be bored like the old blocks</strong><hr></blockquote>
The newer blocks are reccommended no more than 0.010 over stock. I think they made that change in 2000?
I was planning on a new block for my stroker, they really aren't that expensive.
11-14-2001, 03:33 PM
#6
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Re: Anyone Rebuild a high mileage LS1? 97-98 blocks really can't take more than .005 or so, also depends on the amount of coreshift... My car had a late 97 block and it could only take .005. Unfortunately the motor developed problems and could not be bored again.
99-newer blocks are supposed to take .010 which is pretty nice.
Resleeving is very expensive.
99-newer blocks are supposed to take .010 which is pretty nice.
Resleeving is very expensive.
