i was wondering, when i buy sleeves, do i have to buy them the exact same size as my pistons or do they have to be a little smaller and then when they get pressed in they open up a little??? when i get the sleeves, is the piston supposed to be able to slide in?? before i put them in my block or they go in after they are pressed in??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BLACKLUDE97 &raquo;</TD></TR><TR><TD CLASS="quote">i was wondering, when i buy sleeves, do i have to buy them the exact same size as my pistons or do they have to be a little smaller and then when they get pressed in they open up a little??? when i get the sleeves, is the piston supposed to be able to slide in?? before i put them in my block or they go in after they are pressed in?? </TD></TR></TABLE>

Usually the sleeves dont have a final bore done. They do however try to get them close so the machine shop that you take your block to doesnt have to cut out like 1/2 a inch of metal. Unless you have a final bore done on that piston size it wont slide in. Mine they asked what size i wanted, i said 84.5, but i have not done the final bore/hone. So they wouldnt fit in yet.

 

ok good , cause i got my sleeves the other day and i took out one of my pistons and tried to put it through a sleeve and it didnt fit by a small margin.

 

what sleeves did u get?

 

aftermarket sleeves will normally come in the stock bore size which is 81mm for B series or (i think) 87mm for H series. then if you have overbore pistons the machine shop that installs the sleeves (or GE if you send it there) will bore/hone it to size with the correct piston to cylinder wall clearance. the clearance is specified by the piston manufacturer since each brand is a bit different.

if you get stock bore sleeves and have a stock bore piston, the piston may not slide into the sleeve. but the machine shop should take care of that after the sleeves are installed, then the piston will slide right in with just a very little bit of clearance room for expansion.

 

if im only looking to make about 250hp do i need to sleeve my d16z6 block.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by viprcr1 &raquo;</TD></TR><TR><TD CLASS="quote">if im only looking to make about 250hp do i need to sleeve my d16z6 block.</TD></TR></TABLE>

you could most likely get away with OEM sleeves, at least for awhile.
the sleeves allow for more boost/N2O etc to be used, in turn more HP.
if you're referring to 250 Crank HP and not 250 WHP, then the stock sleeves should hold up for some time with a little over 200WHP. if you're talking about 250WHP then the sleeves will most likely have a shorter lifespan. tuning would be the main key to make the OEM sleeves last as long as possible.

it comes down to longevity when sleeving or not sleeving. OEM sleeves should hold up for some time with proper tuning, but will eventually fail at one point or another. resleeving will make the block much stronger (along with rods, pistons etc), and therefore last a lot longer than OEM sleeves. of course proper tuning is what will help either setup last the longest, since pre-detonation can kill quite a few components.