Hey fella's,
I'm rebuilding a JY motor I picked up for dirt cheap. Its just a mild street build for now. Not looking to go crazy & its on a budget! So with that in mind lets jump into it. I need some help with finding pistons.
I'm looking for 1 size bigger than stock because theres some light scratches in the cyl. walls. They aren't deep so I'd assume .03 over set of pistons?

I'm to order from Summit Racing. So maybe someone has a link? If not any help is appreciated.

 

dont think they make pistion over that small 10,20 or 30 over did you crosshatch the cyls yet this will remove minute marks

 

Check out rockauto.com they have good prices on pistons/rings, scratches? it may be just the original crosshatch if so you may just have to hone the cylinders and re use factory pistons with new rings. I would take the block to to a machine shop they will measure for taper, this will ultimately determine how much boring is required.

 

http://www.ehow.com/how_4827132_hone-cylinder-wall.html

 

Ya the blocks at the machine shop and in cly. 6 theres still some scratches even after honing. So I'm just gonna bore it a bite. I'd rather do it perfect the first time!
I really like the look of the SpeedPro pistons off Summit. I like that the piston skirts are coated as well. And they are reasonably priced!

 

Well guys let me say this isn't my first rodeo. I've rebuild quite a few in my day. I know you can hone if the scratches aren't too deep. In my case they are, so a overbore is needed.
I tryed searching for an answer first but couldn't bring anything up

 

smallest i found was 20 over

 

http://www.summitracing.com/search/P...m/?Ns=Rank|Asc

I've never been a fan of hypereutectic pistons because the ring gap is so critical to not fracturing them, but here ya go.

 

.03= 30 over

 

that deep of a scratch huh

 

http://www.4wd.com/HardParts/HPDetai...1&hpDID=180#12

 

Its not that deep. Its just deep enough that the honing wouldn't fix it.
I didn't know they had .20 over pistons lol. I thought .30 over was the smallest.

Thanks for those 2 links guys. I also just joined Jeep Strokers to ask around there! I'll see what they recoommend for low budget pistons!
Thanks for the help guys.

 

one of the links i posted even had 10 overs

 

Those will probably do the trick. I'm going to check out the block tomorrow to see how bad it is. It didn't seem to bad, just bad enough that the hoining couldn't fix it!

So .10 over should work if not I'll go to .20 over.
I'll check that link right now.

 

freegdr you posted an awsome link. Thank you
I belive I'm going with the .20 over pistons by Omix-Ada Part #: OAI17427.08
As well as there ring set Part #: OAI17430.26