Over 400WHP Piston sleeves? Has anyone heard of that?
03-04-2007, 11:27 AM
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Over 400WHP Piston sleeves? Has anyone heard of that?
Ok well heres the scoop. As most of you know I have been doing an extreme LSJ build on my motor. We has new stock piston sleeves put in, Diamond forged pistons, JBP Forged I beam rods, JBP Stage 2+1 head, JBP Stage 2 Cams, and ported the blower and some other little ****. Anyway I got the car back.
Here is what happened.
Started to burn oil and coolant. I took it back to the shop that did the work and they said they pressure tested the coolant system with 25psi for 2.5 hours. No leaks. I said WTF and took it home.
Still had the same problem.... Finally the motor blew while it was getting completely dialed in. He couldnt even go over half throttle without the car shooting smoke. Anyway now what happened was: Piston Sleeves are ****-eyed. They moved??? Thus blew the headgasket and warped the head and fucked up the water jackets in the head.
So the machine shop said he called around doing research and supposedly when you put over 400WHP down you are supposed to use some aftermarked Darton sleeves cause the stock ones will not stay in place, they will move??? WTF? I've never heard **** about the damn sleeves moving! So Im looking for advice on what to do? Im thinking about picking up a Bare block from someone and a bare head and swapping all the components I bought and go from there!
any imput would be highly appreciated cause the shop says he is not liable for what happened which is bullshit cause he should stand behind his work when he tells me the car is driveable when it left the shop! Personally I doubt he even did that pressure test!
Here is what happened.
Started to burn oil and coolant. I took it back to the shop that did the work and they said they pressure tested the coolant system with 25psi for 2.5 hours. No leaks. I said WTF and took it home.
Still had the same problem.... Finally the motor blew while it was getting completely dialed in. He couldnt even go over half throttle without the car shooting smoke. Anyway now what happened was: Piston Sleeves are ****-eyed. They moved??? Thus blew the headgasket and warped the head and fucked up the water jackets in the head.
So the machine shop said he called around doing research and supposedly when you put over 400WHP down you are supposed to use some aftermarked Darton sleeves cause the stock ones will not stay in place, they will move??? WTF? I've never heard **** about the damn sleeves moving! So Im looking for advice on what to do? Im thinking about picking up a Bare block from someone and a bare head and swapping all the components I bought and go from there!
any imput would be highly appreciated cause the shop says he is not liable for what happened which is bullshit cause he should stand behind his work when he tells me the car is driveable when it left the shop! Personally I doubt he even did that pressure test!
03-04-2007, 11:51 AM
#3
I'm old school
I am confused about one item. The first time you built it you stated that you put in new sleeves. Why did you do that? Did you actually do that?
You stock engine sleeves are absolutely fine to over 400 HP. The original GMPP team that did the first builds on this engine only had the stock units start to fail at 750 HP. If you replaced them, it was probably the reason they failed. Installing the new ones was (obviously) the reason for the failure, since they have moved.
For the sleeve to move, the block itself has to have been damaged during the removal of the originals or the installation of the replacements. Especially if they are now out of alignment.
You stock engine sleeves are absolutely fine to over 400 HP. The original GMPP team that did the first builds on this engine only had the stock units start to fail at 750 HP. If you replaced them, it was probably the reason they failed. Installing the new ones was (obviously) the reason for the failure, since they have moved.
For the sleeve to move, the block itself has to have been damaged during the removal of the originals or the installation of the replacements. Especially if they are now out of alignment.
Last edited by Halfcent; 03-04-2007 at 03:23 PM.
03-04-2007, 01:09 PM
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WOW that really sucks. The sleeve are more for the regular 2.2 ecotec. Ours should be fine for alot more power. Sounds like the machine shop fucked something up. I hope all your internals are still good and that your head can be resurfaced and salavged!
03-04-2007, 03:00 PM
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get it sleeved and go with 92mm pistons 
and I have a motor $1500 (with supercharger and coil pack). I think MVP is selling a block...I believe its $1100 shipped.
and I have a motor $1500 (with supercharger and coil pack). I think MVP is selling a block...I believe its $1100 shipped.
03-05-2007, 12:29 AM
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Ok you guys just all helped answer my question. I had the sleeves replaced cause two of the stock ones were fucked. Anyway I picked up another set of Stock sleeves and had the machine shop press the old ones out and put the new ones in. So now that I know that the sleeves should never move I can now prove that the machine shop is at fault, and they will now be paying for all this damage!
Last edited by 06noscobaltss; 03-05-2007 at 12:07 PM.
03-05-2007, 06:49 AM
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Ok you guys just all helped answer my question. I had the sleeves replaced cause one of the stock ones was scorred and another one had a huge gouge in it. Anyway I picked up another set of Stock sleeves and had the machine shop press the old ones out and the new ones in. So now that I know that the sleeves should never move I can now prove that the machine shop is at fault and they will now be paying for all this bullshit damage!
03-05-2007, 08:35 AM
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03-05-2007, 07:08 PM
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Since your a little slow I'll spell it out for you. ^ "I had" another words he had the shop install the sleeves meaning it was his fault not the shops. I'm sure he meant something differant like the shop told him he needs to put new/differant sleeves in. Do you see it now?
Hope it all worked out for you man. You have one hell of a built LSJ there.
Ok you guys just all helped answer my question. I had the sleeves replaced cause two of the stock ones were fucked. Anyway I picked up another set of Stock sleeves and had the machine shop press the old ones out and put the new ones in. So now that I know that the sleeves should never move I can now prove that the machine shop is at fault, and they will now be paying for all this damage!
Last edited by R&C_rallySS; 03-05-2007 at 07:08 PM. Reason: Automerged Doublepost
03-05-2007, 09:37 PM
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I would think its also
and
If you can press something in and out that means it can move. Also if the old stock ones were pressed out by the same shop that means the new ones weren't pressed in correctly which in turn means yes its the shops fault and they should be the ones covering the repair and replacement. He basically answered his own question If im reading his post right.
If you can press something in and out that means it can move. Also if the old stock ones were pressed out by the same shop that means the new ones weren't pressed in correctly which in turn means yes its the shops fault and they should be the ones covering the repair and replacement. He basically answered his own question If im reading his post right.
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