I am thinking about rebuilding my h23 this coming summer and was wandering if any of you guys have experience with higher compression pistons on h23's. I saw that JE has the 10:1 pistons, and I figure I could go w/ a thinner gasket for higher compression, or shave the head if I feel like spending the money on that. I also saw Wiseco makes the 13:1 pistons(seems excessive though). There may be more that I don't know about. Anyone have opinions on these or other ones? Thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by preludese111 &raquo;</TD></TR><TR><TD CLASS="quote">I am thinking about rebuilding my h23 this coming summer and was wandering if any of you guys have experience with higher compression pistons on h23's. I saw that JE has the 10:1 pistons, and I figure I could go w/ a thinner gasket for higher compression, or shave the head if I feel like spending the money on that. I also saw Wiseco makes the 13:1 pistons(seems excessive though). There may be more that I don't know about. Anyone have opinions on these or other ones? Thanks.</TD></TR></TABLE>

you can't run any after market pistons that are forged with the frm in the h23. the only pistons you can put in to up your compression are either type s pistons or mahle gold pistons.

 

I would throw in some H22 pistons and some nice cams.

 

Actually, wiseco and je both make h23 pistons, so I don't get what you're trying to say. Of course, the block must be sleeved, but they do make them.
Also, I already have stage 1 crower cams in it. I didn't think about using the h22 pistons. Are the type s ones 11:1 compression? That would be nice and cheap.

 

The type s pistons will be closer to 12:1 and you would need to have the rods modified for the floating wrist pin on the piston.

 

oh, thanks for the info. Do machine shops generally do that, or would I have to send it off somewhere?

 

a good machine shop shood be able to do bush the rods for you, just give them a call

 

i think that the type s pistons is too much for the stg. 1 cams... you should look into reg. h22 pistons.

 

Why would that be worth it, then? That's just .2 more than stock...I would just go for some je's in that case.

 

how much are you looking to spend. the reason they are suggesting the h22 pistons or the type s pistons is becuase they are for frm. if you did do the je's you would have to get the block sleeved which will cost you are 1100 to 1400 more

 

you do know that 10:1 is lower than stock compression right? why lower the compression if it's obvious you're wanting to do an all motor setup?
yes you could possibly get back to stock with the other things mentioned(thinner hg and shaving) but if you gained anything it wouldn't be worth what you spent to go backwards and then try to catch back up to where you were.
try to find some pistons with something around the 11 to 11.5 range.
i think that's what the type-s pistons put you at? or maybe it's around 12? anyone know that part

 

my stock compression is 9.8:1. I have an h23. If I did regular h22 pistons, it wouldn't be a huge difference. If I did the type s pistons, it would be worth it. However, does anyone know what the general ballpark price is for the modification to fit the h22's? I'm pretty sure the darton sleeves would run about 50 bucks per sleeve, as advertised on raceeng.com, so am I missing something? That doesn't look to steep and I wouldn't pay a shop to do all the work. I'd have a friend do it, most likely, who is a mechanic, so the price would be less intense. Would that be more expensive than modifying the crank/rods? I just wanted to bore it out a little too, but if that's too much of a cost too, that would be unreasonable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by preludese111 &raquo;</TD></TR><TR><TD CLASS="quote"> I'm pretty sure the darton sleeves would run about 50 bucks per sleeve, as advertised on raceeng.com, so am I missing something? That doesn't look to steep and I wouldn't pay a shop to do all the work. I'd have a friend do it, most likely, who is a mechanic, so the price would be less intense. </TD></TR></TABLE>

OMG no. Sleeves are not $50 and if you let your friend install sleeves you might as well shred all of the money you spend on doing so. If you want to sleeve your block get it done by a good, reputable shop such Benson or Golden Eagle. It'll be more than $50 per sleeve

 

you can get pressed-in liners (essentially making the h22 cylinder walls like the stock F22 cylinder walls) for pretty cheap so i have read.

 

REG H22 PISTONS WILL GIVE YOU 11:1 COMPRESSION
JDM H22 PISTONS WILL GIVE YOU 11.6:1 COMPRESSION
TYPE-S PISTONS WILL GIVE YOU 12:1 COMPRESSION
any of those pistons will work better than stock
and you will not have to sleeve.
i would go with the type-s

 

I totally agree w/ the type s, but how much will it cost to do the modification to make them fit???
My friend basically built my old mustang motor and has built pro drag cars for the last 20 years, and he's done sleeves before, he can bore it out, so I'd say he knows what he's doing.
Instead of being a dick, why don't you offer real help in telling me how much it really does cost, then...
Sleeves don't cost that much themsleves, apparently. It's the service and labor that's expensive. On modacar.com, golden eagle does the sleeving, supplying the sleeves, for a little under a thousand.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by preludese111 &raquo;</TD></TR><TR><TD CLASS="quote">I totally agree w/ the type s, but how much will it cost to do the modification to make them fit???
</TD></TR></TABLE>
it pretty cheap
just take them to your machine shop

 

sweet, thanks for the info. Cheap is good enough for me. It looks like that's the best option then.

 

if you go to http://horsepowerfreaks.com they are having a sale on the type s pistons for $210. last i checked that was pretty cheap but i could be wrong

 

nice, thanks for the link and the help, fellas.