I want to purchase some used JDM H22 pistons to use in my budget H23VTEC project. But was curious if they also have the A and B lettering sceme as USDM engine? I assume they do, but the guy I'm talking to claims they have no letters on the top besides P13. Do they actually say A or B on the top? I saw where the letter is supposed to be in other threads, but the pictures were somewhat unclear.

thanks

 

I thought the JDM pistons also used the A/B sizing system. It should say on the top in the center of the piston if they do, though.

 

just measure them get out your MIC and check your cylinder bore and then get your required piston to wall clearance.

 

i got 2 setsof jdm h22 in front of me rite now and they all have b stamped in the center of them maybe his are just full of carbon and he cant see mines are for sale less then 20,000 miles on them still attached to the rods

 

Look on the driver side rear on the block (same surface that the head mates to) It will have lines that are I, II or A, B. That is you BORE size for the block

A, I = 87.010 - 87.020
B,II = 87.000 - 87.010

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22 civic &raquo;</TD></TR><TR><TD CLASS="quote">i got 2 setsof jdm h22 in front of me rite now and they all have b stamped in the center of them maybe his are just full of carbon and he cant see mines are for sale less then 20,000 miles on them still attached to the rods</TD></TR></TABLE>

i've got an AAAA motor

 

I'm kinda curious if the pistons actually say which one they are. Good time to break out a caliper and find out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SilverEk3dr &raquo;</TD></TR><TR><TD CLASS="quote">I'm kinda curious if the pistons actually say which one they are. Good time to break out a caliper and find out.</TD></TR></TABLE>

they do...the guy finally responded saying they all have B's on them.