max bore on old style LS1 sleeves
08-21-2009, 09:18 PM
#1
max bore on old style LS1 sleeves Its a relseeved LS1 block.
Anyone know what that is........and still have safe cylinder wall thickness left.
Just for N/A use.
edit: Damn, I put this in the wrong section.
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Anyone know what that is........and still have safe cylinder wall thickness left.
Just for N/A use.
edit: Damn, I put this in the wrong section.
.
Last edited by LS6427; 08-21-2009 at 11:24 PM.
08-21-2009, 10:46 PM
#3
This is a resleeved block. All I know is that the sleeves are the old style Darton, I think back then they were wet sleeves.
Basically, its a 4.1" bore. He wants to go 4.125" because he has a free set of Wisecos from a friend. And the engine is out of the car ready to start going together. But this will save him the cost of a set of 4.125 pistons and he'll just pay to have ot bored to 4.125".
For N/A, should it be just fine at that bore.
.
Last edited by LS6427; 08-21-2009 at 10:55 PM.
08-21-2009, 11:08 PM
#4
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All the LS1/LS6 blocks that were resleeved with Darton sleeves were wet. The LS2 Darton sleeves were dry. Here's the tech page from Darton's website. Google is your friend. 
http://www.dartonsleeves.com/dsCatalogue2009.pdf
I built dozens of them @ 4.125 bore. No problem there, even with a power adder! Built at least a dozen @ 4.160 bore too, and they were fine N/A.
http://www.dartonsleeves.com/dsCatalogue2009.pdfI built dozens of them @ 4.125 bore. No problem there, even with a power adder! Built at least a dozen @ 4.160 bore too, and they were fine N/A.
08-21-2009, 11:15 PM
#5
All the LS1/LS6 blocks that were resleeved with Darton sleeves were wet. The LS2 Darton sleeves were dry. Here's the tech page from Darton's website. Google is your friend. http://www.dartonsleeves.com/dsCatalogue2009.pdf
I built dozens of them @ 4.125 bore. No problem there, even with a power adder! Built at least a dozen @ 4.160 bore too, and they were fine N/A.
http://www.dartonsleeves.com/dsCatalogue2009.pdfI built dozens of them @ 4.125 bore. No problem there, even with a power adder! Built at least a dozen @ 4.160 bore too, and they were fine N/A.
Also, its ok to bore the sleeves after this long. They won't loosen them in the process?
The engine was taken out a month ago and it was in tip top shape, no dropped sleeves, no drinking coolant, perfect. He's getting it for free. Wants to make a 441ci. He has a 4.125 crank already.
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08-22-2009, 11:53 PM
#6
Ls1 mid The LS1 MID sleeves were never offered in 4.100" bore. The sleeves are made to 4.110" bore which are usually bored and finish honed to 4.125". They did make some 4" bore sleeves which were identical to the larger bore on the exterior, in other words they could be bored to 4.160" finished size as well.
If this is an early style MID sleeved block, the sleeves are 5.675" long. The updated design are 5.800" long on all Darton LS liners both wet and dry. The shorter length is going to be touch and go for a 4.125" stroke. You have to be very careful with the piston skirt design.
And yes, you can bore the block if it indeed is an MID. The block must be finish honed with deck plates.
Steve
If this is an early style MID sleeved block, the sleeves are 5.675" long. The updated design are 5.800" long on all Darton LS liners both wet and dry. The shorter length is going to be touch and go for a 4.125" stroke. You have to be very careful with the piston skirt design.
And yes, you can bore the block if it indeed is an MID. The block must be finish honed with deck plates.
Steve
Great man, thanks.
Also, its ok to bore the sleeves after this long. They won't loosen them in the process?
The engine was taken out a month ago and it was in tip top shape, no dropped sleeves, no drinking coolant, perfect. He's getting it for free. Wants to make a 441ci. He has a 4.125 crank already.
.
Also, its ok to bore the sleeves after this long. They won't loosen them in the process?
The engine was taken out a month ago and it was in tip top shape, no dropped sleeves, no drinking coolant, perfect. He's getting it for free. Wants to make a 441ci. He has a 4.125 crank already.
.
__________________
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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08-23-2009, 01:37 AM
#8
The LS1 MID sleeves were never offered in 4.100" bore. The sleeves are made to 4.110" bore which are usually bored and finish honed to 4.125". They did make some 4" bore sleeves which were identical to the larger bore on the exterior, in other words they could be bored to 4.160" finished size as well.
If this is an early style MID sleeved block, the sleeves are 5.675" long. The updated design are 5.800" long on all Darton LS liners both wet and dry. The shorter length is going to be touch and go for a 4.125" stroke. You have to be very careful with the piston skirt design.
And yes, you can bore the block if it indeed is an MID. The block must be finish honed with deck plates.
Steve
If this is an early style MID sleeved block, the sleeves are 5.675" long. The updated design are 5.800" long on all Darton LS liners both wet and dry. The shorter length is going to be touch and go for a 4.125" stroke. You have to be very careful with the piston skirt design.
And yes, you can bore the block if it indeed is an MID. The block must be finish honed with deck plates.
Steve
So if its been a 4.1 bore for this long, will going to 4.125 be just fine if he stays N/A? Or, what could he spray it with if he wanted to?
Thanks.
.
