is this ls2 block fixable?
Thread Starter
Launching!
Joined: Aug 2003
Posts: 248
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is this ls2 block fixable? totally my luck.....came out of a trailblazer SS that drove it into water (pond) and hydro locked the motor breaking a rod.
#8 cyl....very bottom of sleeve. apx 1" width and depth
#8 cyl....very bottom of sleeve. apx 1" width and depth
Thread Starter
Launching!
Joined: Aug 2003
Posts: 248
Likes: 0
1 reply....i'm suprised! posted on a few other sites and they suggested a local machine shop that sleeves blocks. called him up and explained the damage and he said it shouldn't be a prob and since it's so low on the skirt, they may not even have to add aluminum back in, but will let me know for sure when he sees it. he said $75 labor and I pay for the cost of the sleeve.
1 reply....i'm suprised! posted on a few other sites and they suggested a local machine shop that sleeves blocks. called him up and explained the damage and he said it shouldn't be a prob and since it's so low on the skirt, they may not even have to add aluminum back in, but will let me know for sure when he sees it. he said $75 labor and I pay for the cost of the sleeve.
Check out Race Engine Development: http://www.raceenginedevelopment.com...4927/index.htm
They are a sponsor here and hold the patent to Darton sleeving process. Contact Steve and direct him to this thread for his expert and professional opinion. Also contact Jason at Katech and see what they recommend.
I had a block with less damage than that and opted for a new block for a piece of mind and more importantly reliability. Your call, but at least seek some expert opinions.
I'm sure it could be fixed, but you could probably score a used LS2 shortblock and have it machined for way cheaper. I did exactly what you did on an old 305. I just bored it, built it, and drove it. Left the chunk missing. Ran fine...then again, it wasn't any sort of race application.
FWIW I wouldn't re-use that block.
FWIW I wouldn't re-use that block.
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I've seen similar damage on an iron block. A reputable engine guy was going to run it in his sand rail like that. One thing you should do, however, is check the adjacent cam lobe carefully. It was wiped in one spot in that engine.
Teching In
Joined: Nov 2006
Posts: 13
Likes: 0
From: Houston, Tx
If you're interested in a LS2 long block with after market heads and cam, let me know. I'm having a custom LSX455 being built right now and the motor should be coming out in 7-12 days. It has low mileage and made great power with the fast 90, ported tb and LT headers.
It might be OK and it might not. Sleeved aluminum blocks seem to be hit or miss, but all that experience was with all 8 sleeves. I replaced sleeve may be OK. $75 wouldn't be that costly to find out, I guess.
Last edited by KCS; Sep 7, 2008 at 06:18 PM.
Thread Starter
Launching!
Joined: Aug 2003
Posts: 248
Likes: 0
pulled everything apart today, and theres a slight score in one of the other cyl, but I am pretty sure it will come out pretty easily.
he's a very reputable builder around these parts, so I'm feeling more confident this will be ok. i'll let you all know what he says though.
yes he has - infact he sleeves a lot of race engines I have come to find out. he's got 2 other ls2 blocks he's doing as well in front of me.
pulled everything apart today, and theres a slight score in one of the other cyl, but I am pretty sure it will come out pretty easily.
he's a very reputable builder around these parts, so I'm feeling more confident this will be ok. i'll let you all know what he says though.
pulled everything apart today, and theres a slight score in one of the other cyl, but I am pretty sure it will come out pretty easily.
he's a very reputable builder around these parts, so I'm feeling more confident this will be ok. i'll let you all know what he says though.
That's sounds to good to be true. Has that shop ever resleeved an aluminum LS block?
Check out Race Engine Development: http://www.raceenginedevelopment.com...4927/index.htm
They are a sponsor here and hold the patent to Darton sleeving process. Contact Steve and direct him to this thread for his expert and professional opinion. Also contact Jason at Katech and see what they recommend.
I had a block with less damage than that and opted for a new block for a piece of mind and more importantly reliability. Your call, but at least seek some expert opinions.
Check out Race Engine Development: http://www.raceenginedevelopment.com...4927/index.htm
They are a sponsor here and hold the patent to Darton sleeving process. Contact Steve and direct him to this thread for his expert and professional opinion. Also contact Jason at Katech and see what they recommend.
I had a block with less damage than that and opted for a new block for a piece of mind and more importantly reliability. Your call, but at least seek some expert opinions.
Fixable? Probably. Its hard to tell from the pictures, but the cost of resleeving is going to exceed the cost of a new LS2 block.
Sorry - wrong verbage. Useable? I had an iron block that had the same stuff (see above), but there was a weld repair at the main oil galley (= no bueno). The chipping at the bottom of the cylinders is not a *MAJOR* concern (and I stress MAJOR) - it's a fairly low-stress area. That being said, that is some healthy damage to the cylinder.
And who would ever pay to have a block resleeved anyway? Unless it was a rare piece, that's simply asinine.
And who would ever pay to have a block resleeved anyway? Unless it was a rare piece, that's simply asinine.
