Oversized Pistons!
#1
Oversized Pistons!
As you can see in my sig, I blew my motor.
I have yet to have my machine shop look at the motor, but if I can.
I am looking into boring out the sleeves and re-honing.
What are my option's for oversized piston's, ect.
What all will I need for my rebuild of course depending on how big my bore is.
I am completely clueless about bore sizes, ect.
Please help a lost soul looking to gain performance in a rebuild.
What parts would I need to buy, ect.
Thanks,
Bratboy90
I have yet to have my machine shop look at the motor, but if I can.
I am looking into boring out the sleeves and re-honing.
What are my option's for oversized piston's, ect.
What all will I need for my rebuild of course depending on how big my bore is.
I am completely clueless about bore sizes, ect.
Please help a lost soul looking to gain performance in a rebuild.
What parts would I need to buy, ect.
Thanks,
Bratboy90
#2
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Why do you want to bore stock sleeves, that's just asking for trouble all over again. If you're going to run aftermarket pistons you should have the zzp girdle block or a sleeved block IMO. You beefed up the pistons, what's the next thing that's going to detonate?
#6
One sleeve is damaged, weight my options to rebuild and gain H.P.
Check the pics on page #1
I'm going to say the sleeve is TOAST and can't overbore to fix. But I'm no genius. Prob will just replace sleeve and piston.
https://www.cobaltss.net/forums/prob...t-help-268005/
Anyone on here have a spare single diamond piston. LOL
Thanks,
Bratboy90
Check the pics on page #1
I'm going to say the sleeve is TOAST and can't overbore to fix. But I'm no genius. Prob will just replace sleeve and piston.
https://www.cobaltss.net/forums/prob...t-help-268005/
Anyone on here have a spare single diamond piston. LOL
Thanks,
Bratboy90
#11
Senior Member
i just bored the stock sleeves on my lnf, i had light score on my 4th cylinder due to the piston blowing a hole in it, the machine shop told me i would be fine and i did wiseco 86.50 pistons
#12
Super Moderator
iTrader: (3)
i have they are .060 thick and shouldent be bored no more then .010 on a lsj block lnf i wouldent go past .020
thats good advice stock sleeves arent that expensive just dont heat the block to remove them they dont come out hard
#18
Question
if i want to install 85 5 oversized forge pistons in where i currently have stock pistons which are 86mm will i need a bore?
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