Im trying to determine if I can use h22 type s pistons in an h23 block for a NA stroker setup. Is this possible? Does anyone know the resulting compression ratio? What about compression height of h23 piston versus h22 type s piston? Any info on this would be great!

 

Typicaly when you swap pistons in any h or f motor you have to get it resleeved. Honda but a coating around the stock sleeves that rubs off with differnt pistons in the motor and then wreck it. So no I dont think this would work, I could be wrong though.

 

H23/H22 share the same bore, but have different rod/stroke. Is the pin moved on the H22A's pistons?? If so you might be hosed..

you would be better off with some off the shelf cast pistons (avoid forged unless you wanna resleeve) just my opinion though!

 

Ahhh yes thats it thanks for clairfing that.

 

there is a lot of miss information on this topic. If you plan on (NOT) resleeving the block Factory pistons work. The wrist pins are in the same location on the h23 and the h22, so this is not an issue. The info on the "shelf" pistons is bogus. If you use afterrmarket pistons in the h22a without resleeving, the cylinder walls will Gaull. This is due to the FRM make-up of the cylinder walls.

** do a search ther is a lot more info on this topic elsewhere.


[Modified by 2point6, 5:06 PM 9/25/2002]

 

it might be being the h22 rod is .5 longer than the f22/h23 rod

 

why would a non forged aluminum piston gaull the walls (i am asking this seriously)? help me understand, because i'm from the castiron domestic block world. i would think if you stuck with a cast alum and non chrome-moly rings (like you'd use with a forged) you'd be ok

Ps the only reason i asked about the wrist pin is:

H22A stroke = 3.571"
H23A1 stoke = 3.740"

H22A rod length = 5.636"
H22A1 rod length = 5.580"

both do have the same desk height though... since really until its sleaved its the same block.

doing some quick ghetto math that leaves +0.113" i guess that no biggie on these blocks?

im sure this swaps been done a million times.. but i guess im on crack or something.


[Modified by GimpyAccord, 10:32 AM 9/25/2002]

 

There are rumors of people doing this (running cast pistons). I talked to JE and they have said that custom piston are availible that work with the FRM sleeves. The gaulling that occurs (in their experience) is due to a shape and clearancing issue, not a material incompatability. Since these are a custom aplication it is not a "off the shelf piston" Hopefully that will clarify my previous post.

 

to answer the question, 2point6 did but i will clarify...

the Type S pistons will work fine in the 2.3 block with stock sleeves

 

thats too bad no one makes cast 'off the shelfs' like they do in the domestic world. not everyone needs forged.. esp in the honda world where a 300 dollar set of pistons suddenly means 1000 of block work.

btw read the edited above

 

thats pretty cool... i saw a type S rotating assembly on ebay not long ago.. it went for like 150.00. would be good to just get the pistons.

 

I did and you have a valid mathematical point. The pistons have been swaped many times with good success. For example...Top Secret (or top fuel) uses the h23 crank and rods with h22 typeS pistons in a h22a block for their stroker kit. I have never measured a (stock) h22a piston height. I will try to do this tonight. This may tell us where or how far the stock pistons are down in the holes.


[Modified by 2point6, 6:53 PM 9/25/2002]

 

Scott - who has that **** just laying around.

 

you ain't kidding. You should see my house.....LOL. h22's f22's h23's bseries everywhere.

 

h23 and f22 crank are the same, problem is the actual metal of the crank it is not the same as the h22's crank metallurgy