ls3 cracked block help
#1
Teching In
Thread Starter
iTrader: (4)
Join Date: Apr 2009
Location: madison tn
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Bought a ls3 that needed a sleeve. Had it sleeved by a good machine shop. Put 47 miles on the engine and as I was watching it idle looking for an exhaust leak it started to white smoke. Found out it was #7 so I pulled the head and saw the blocked crack on #7 between the new sleeve and the lower coolant passage. Can this be fixed or am I just screwed out of the ton of money I just spent?
#6
10 Second Club
iTrader: (1)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Hard to say then. I would take it back to the shop. Idk how your relationship is with them but they might say it wasnt there before or ask you why you didnt see it before. Since it was installed with heads and all they may claim it couldve happened on install. Good luck man. Hope it all works out for you.
#7
LS1TECH Sponsor
iTrader: (1)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
The only Gen IV block that can be reliably repaired by doing one sleeve is the LS7.
I'm not saying it is impossible to replace one sleeve on the LS3 but I am saying that doing sleeve installs is my business and I wouldn't attempt it. On the LS2 and LS3 blocks it would be at least the entire bank and preferably the entire block to ensure success.
The only "fix" would be to try and seal the leak with Moroso Ceramic Engine Sealer. If the bore in that sleeve is still round, give that a try. Otherwise you will need to find another block.
Steve
I'm not saying it is impossible to replace one sleeve on the LS3 but I am saying that doing sleeve installs is my business and I wouldn't attempt it. On the LS2 and LS3 blocks it would be at least the entire bank and preferably the entire block to ensure success.
The only "fix" would be to try and seal the leak with Moroso Ceramic Engine Sealer. If the bore in that sleeve is still round, give that a try. Otherwise you will need to find another block.
Steve
__________________
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
Trending Topics
#8
TECH Enthusiast
Join Date: Nov 2004
Location: Tampa FL
Posts: 714
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Did you have the block crack checked? The machine shop should have offered to do that as part of the repair. The block may have been cracked from the start and it was just not found otherwise.
#13
Launching!
iTrader: (1)
Join Date: Sep 2006
Location: soFlo
Posts: 242
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
i just bought l92 a few days ago that dropped a valve. it killed a piston a gouged # 6 sleeve and destroyed one head.
everything else is great.- i took it to the machine shop- and the guy said he will take care of it no problem. " he does it all the time"
after reading this post- im officially freaked out..
everything else is great.- i took it to the machine shop- and the guy said he will take care of it no problem. " he does it all the time"
after reading this post- im officially freaked out..