I was wondering if I could use s2000 pistons on f22 rods and crank in my JDM H22. i know that the crank an rods will work but will the s2000 pistons yield too high of a compression ratio or not? And which s2000 pistons to use the newer ones or the older ones. thanks

 

do the s2k pistons have the same bore???? and also h22's have two bores (A and B) so you would need to match them if possible. why not just use type s pistons

 

I think typse s pistons would get over 12.0 compression ratio, which I don't really want because i'm going to only run 92 octane on the street.
as for the s2000 pistons, I'm almost positive they have the same bore according to six sigma's h2b crx build.

 

help please

 

they would work better with a f23 crank. use oem and a thicker head gasket

 

the f23 crank has 55mm mains when the h22 has 50mm mains, my block is a jdm h22.

 

Type S pistons are 11:1 CR.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bryse68 &raquo;</TD></TR><TR><TD CLASS="quote">I think typse s pistons would get over 12.0 compression ratio, which I don't really want because i'm going to only run 92 octane on the street.
as for the s2000 pistons, I'm almost positive they have the same bore according to six sigma's h2b crx build.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VSBB6 &raquo;</TD></TR><TR><TD CLASS="quote">Type S pistons are 11:1 CR.

</TD></TR></TABLE>
He said hes using a 95mm crank so the compression heights are different. He would be between 12-12.2. If you cant get a tuner to make it run well on 92 octane run a thicker head gasket. I don't think it should be a problem for any good tuner. I run a little higher compression then that on 93 pump gas( around(12.1-12.3)

As far as i know the S2000 pistons have a lower height then the H pistons. i would just use the type s pistons it works just fine. If you have bad gas in your area use a thicker head gasket. A .040" headgasket will give you low enough compression aprox. 11.5

 

if i am not mistaken the c/h on the s2k piston is 1.171 so your piston will sit in the
hole.you could also run the 97mm stroke ,just use the rods and you will still set in the hole.

i have turned a f23 crank from 55mm to 50mm mains and works like a charm.as a matter a fact it is in a car in ca. running 11's....so don't be afraid to try stuff.

 

I'll try and see if the local machine shops can do this, because I have a spare f23 on the side that is just sitting. thanks

 

if they won't do it send it to me and i can get it done just pm me a # to reach you ok.

harv

 

how much do you charge? because shipping it to you will be alot I would think.

 

A change in stroke changes the compression ratio. If you use Type S pistons, but change the stroke to 97mm, CR jumps to 11.7:1, give or take (assuming a 5.5cc dome on the Type S pistons, 0.010" deck clearance, 0.028" headgasket, and 53.8cc combustion chamber volume).

A change in the compression height of the piston used will also have an effect on CR as already stated.

I thought one of the issues with using S2k pistons was the valve angle, no?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VSBB6 &raquo;</TD></TR><TR><TD CLASS="quote">Type S pistons are 11:1 CR.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by my9thtry &raquo;</TD></TR><TR><TD CLASS="quote">He said hes using a 95mm crank so the compression heights are different. He would be between 12-12.2. If you cant get a tuner to make it run well on 92 octane run a thicker head gasket. I don't think it should be a problem for any good tuner. I run a little higher compression then that on 93 pump gas( around(12.1-12.3)

As far as i know the S2000 pistons have a lower height then the H pistons. i would just use the type s pistons it works just fine. If you have bad gas in your area use a thicker head gasket. A .040" headgasket will give you low enough compression aprox. 11.5</TD></TR></TABLE>

 

?I thought one of the issues with using S2k pistons was the valve angle, no
[/QUOTE]
i am unsure about this.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bryse68 &raquo;</TD></TR><TR><TD CLASS="quote">how much do you charge? because shipping it to you will be alot I would think.</TD></TR></TABLE>


shipping i would say would be around 30-40 bucks then 150 to turn it down from 55 to 50.


if you use a 97mm crank and the rod......and use the type s piston or any h22 piston.your piston will be out of the whole .038+ and trust me it will be way higher than just 11:7...but there are plenty and SAFE ways to build what your doing,just pm me if you need help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bryse68 &raquo;</TD></TR><TR><TD CLASS="quote"> I have a spare f23 on the side that is just sitting. thanks</TD></TR></TABLE>

Just use the f23 block, the mains already fit the crank The sleeves seem ok at 87mm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flyrod &raquo;</TD></TR><TR><TD CLASS="quote">

Just use the f23 block, the mains already fit the crank The sleeves seem ok at 87mm</TD></TR></TABLE>

that's what i'd be doing.....

 

which is cheaper to do?
trimming the mains or boring the cylinder walls?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flyrod &raquo;</TD></TR><TR><TD CLASS="quote">

Just use the f23 block, the mains already fit the crank The sleeves seem ok at 87mm</TD></TR></TABLE>
does the h22 head bolt onto the f23 block?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bryse68 &raquo;</TD></TR><TR><TD CLASS="quote">
does the h22 head bolt onto the f23 block?</TD></TR></TABLE>


yes it does,but you have to plug and oil gallery no big deal tho.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flyrod &raquo;</TD></TR><TR><TD CLASS="quote">

Just use the f23 block, the mains already fit the crank The sleeves seem ok at 87mm</TD></TR></TABLE>
are the walls really thin? I might run nitrous also

 

when triming a f23 crank, what do you do about the thrust bearing surface?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alterdcreations &raquo;</TD></TR><TR><TD CLASS="quote">when triming a f23 crank, what do you do about the thrust bearing surface?</TD></TR></TABLE>


need more info

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">A change in stroke changes the compression ratio. If you use Type S pistons, but change the stroke to 97mm, CR jumps to 11.7:1, give or take (assuming a 5.5cc dome on the Type S pistons, 0.010" deck clearance, 0.028" headgasket, and 53.8cc combustion chamber volume).


</TD></TR></TABLE>

I got to almost the smae number you did but he said F22 Crank which is 95mm(and with that combo the piston sticks out of the hole .020) the only difference i had was i used .026 for the headgasket. There wasnt anything wrong with my math. were you quoting me cause of the stroke differences?

 

whats so good about the f23 block?