pistons

whats the difference between dish pistons and low compression pistons

I don't really do any internal engine work, but here's what I remember from school.

Dish pistons are sortta dish shaped... they have a lip around the outside that is higher than the rest.

Low compression pistons just have lower compression than stock. Adding on forced aspiration could require the use of lower compression pistons if the engine has high compression already. I don't know of anything else they would be used for.

Dish pistons could also be low compression pistons.

High compression piston 12.1:1

http://www.x-pipe.com/Scavenge_files/Image5.gif

Stock Compression Ecotec Pistons 10.1:1

http://img399.imageshack.us/img399/5631/teardown006uw5.jpg

Low Compression Ecotec Pistons 8.5:1

http://i6.photobucket.com/albums/y222/dogmoo/IMG_1514.jpg

Lower the compression ratio, the deep the dish gets. The higher the compression, the dish goes away and relief cuts are made for valves.

so which one do you recommend me to use

Turbo charging - Low compression
Supercharger/rebuild - stock
N/A power maker - High compression

can you tell me where can i get this low compression piston i will really appreciated

E-mail or call Karo @ www.carcustoms.net

He is one of the best j-body parts distrubutors around. When possible I buy everything through him.

email: [email protected]
phone: (818) 502-1073

Tell him Cody who works at RD Fabs recommended you to him. ;)

ok...ill do that but what compression ratio do i use

he special orders wiseco's, just request the low compression ones. They'll be in the 8's.

ok ill do that...i was about to buy the 10:1 compression but my friends told me that i need low compression piston if im boosting my car nut i wasnt sure

cody, karo said that there is no need to get the lower compression he said the 9:1 will be good

If the stock compression is 10:1 and he's got 9:1, yea those will work just fine. For your head gasket order a cometic MLS HG and get the thickest one they offer. It will also lower your compression a smidge more if you'd like.

Karo is the man.