How are the LS1 sleeves made up?
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How are the LS1 sleeves made up? Was talking to my machine shop guy and he was scratching his head saying the sleeves in my block looked thin. I said it should be boreable and he gave me this funy look and we started gabbing about the LS1 block. I finally said okay, I will pull the number off the block and go check it out. Its a 99 engine but it turns out to be a 12550592 block. I need to find out if this thing is bore-able as it looks to be a 97+ carry over block. If I measure from the inside edge of sleeve to outside, the part thats press fitted to the block, is that my thickness, or, is there a lip at the top of the sleeve thats thicker than the rest of the sleeve the piston grinds on?
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Originally Posted by csmc711
Was talking to my machine shop guy and he was scratching his head saying the sleeves in my block looked thin. I said it should be boreable and he gave me this funy look and we started gabbing about the LS1 block. I finally said okay, I will pull the number off the block and go check it out. Its a 99 engine but it turns out to be a 12550592 block. I need to find out if this thing is bore-able as it looks to be a 97+ carry over block. If I measure from the inside edge of sleeve to outside, the part thats press fitted to the block, is that my thickness, or, is there a lip at the top of the sleeve thats thicker than the rest of the sleeve the piston grinds on?
I don't have the stock ls1 sleeve thickness for each block iteration. the sleevs are far thinner then they would be if they were as cast bores. The aluminum helps support the sleeve.Most of the OEM blocks really shouldn't go past 0.010 over. I think there are 2 or three block iterations that can go further however but doing a bit of www.google.com searching may turn that up for you. If not check with Katech they are one of the Sponsors here and have a very compitent and capable machine shop that might be able to provide a specific answer.
LS1 sleeves There is a flange at the top of the stock cast in sleeve that makes the sleeve appear to be thicker than it actually is. You can not bore these sleeves. They can be cleaned up by honing only to 3.905" max. bore.
If you want to go larger than that, the block must be sleeved. The Darton MID wet sleeves are the only viable way to end up with a trouble free block with the LS1 or LS6 blocks. The Darton MID sleeves are available in two sizes. The larger will go to 4.200" bore.
The Darton MID sleeve process eliminates the cast in iron liner and aluminum wall, replacing it with a very strong ductile iron sleeve. If you are interested in going this route, send me a pm and I will give you pricing. I am one of the patent holders on the sleeve and have done hundreds of installations.
Steve
If you want to go larger than that, the block must be sleeved. The Darton MID wet sleeves are the only viable way to end up with a trouble free block with the LS1 or LS6 blocks. The Darton MID sleeves are available in two sizes. The larger will go to 4.200" bore.
The Darton MID sleeve process eliminates the cast in iron liner and aluminum wall, replacing it with a very strong ductile iron sleeve. If you are interested in going this route, send me a pm and I will give you pricing. I am one of the patent holders on the sleeve and have done hundreds of installations.
Steve
Originally Posted by csmc711
Was talking to my machine shop guy and he was scratching his head saying the sleeves in my block looked thin. I said it should be boreable and he gave me this funy look and we started gabbing about the LS1 block. I finally said okay, I will pull the number off the block and go check it out. Its a 99 engine but it turns out to be a 12550592 block. I need to find out if this thing is bore-able as it looks to be a 97+ carry over block. If I measure from the inside edge of sleeve to outside, the part thats press fitted to the block, is that my thickness, or, is there a lip at the top of the sleeve thats thicker than the rest of the sleeve the piston grinds on?
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Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
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Originally Posted by Cop Car
take it to someone else, he has no business touching an LS1
****, so, that block is no good then as it has some serious scratches in it!? Any way to measure SOMETHING to see how thick the sleeves are or is this a known engine that has met its demise? I tried google but there is no info I have found, yet, as to how much can be bored, a lot of talk about them, but not boring/oversizing. Obviously, if it is a cross over fro 97,I would have to say in my guesstimation, no. As for now, I only have the above referances.
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Originally Posted by Cop Car
seriously, take it to someone who knows about LS1s, they will save you lots of time and money with their experience. education is expensive..
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Originally Posted by MiaSSmaro98
what about if its more then a few miles
I live in Shreveport,Lousiana. The transmission in my mustang came from Washington state (TKO500, Darkhorse performance) and my motor came from California. Shipping>rebuild.
To clear up a few things, there is a big difference between boring a block, and just a clean up hone, so that's probably why he gave you a look when . They are two entirely different procedures. You can hone the early (97-98) blocks .005" max. The later blocks (99+) can usually go to .010" overbore.
It usually isn't much $$ to just hone out the cylinders, so it might be worthwhile to try and hone it to 3.903" (.005" over stock) to see if the scratches come out of it.
Mike
It usually isn't much $$ to just hone out the cylinders, so it might be worthwhile to try and hone it to 3.903" (.005" over stock) to see if the scratches come out of it.
Mike
Is it true that the liners are spun in a centrifuge when theyre cast so that centrifugal force makes them denser as it cools? I thought i remember reading that once, but never found any info to back it up...
