i got an h22 swap in my civic. i would like to know the year of the motor. my engine code is 3044857 and my head is stamped with the year "97". this does not make sense. the way you read the engine code to find out the year of production is that the first number represents the number of years since that motor was first made right? h22a's first started in 92 right? which would mean that my motor is a 94, according to the engine code.(92=1, 93=2,94=3). it doesnt make sense that my head would be stamped as a 97, unless the block and the head are from different years. someone help!!!........BTW im running an obd1 ecu, which means that my head has to be a 97, and my block on obd1(92-95) right?


Modified by xd69 at 5:58 PM 5/8/2005

 

I always went by the "97" stamped on the head.

 

anyone else??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xd69 &raquo;</TD></TR><TR><TD CLASS="quote">anyone else??</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sixgundone &raquo;</TD></TR><TR><TD CLASS="quote">I always went by the "97" stamped on the head.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xd69 &raquo;</TD></TR><TR><TD CLASS="quote">BTW im running an obd1 ecu, which means that my head has to be a 97, and my block on obd1(92-95) right?
</TD></TR></TABLE>

For the ludes, obd1 was 93-96, and obd2 was 97+ i thought. Someone please correct me if I'm wrong here.

 

96 was OBDII, I believe. It was wierd though because it was still an H22A1. Sort of a transitional kinda thing.

If your block is from 97+, it will be stamped H22A4.

Either way it doesn't matter, you can run either engine with an OBDI or OBDII ecu given the proper wiring.

I'm a little confused: who cares what year the head is? I thought it was only the older blocks that were more desirable than the new ones?

 

well i really dont care what year the head is, i just wanted my engine to be a jdm h22a. is it possible to run a jdm block with a usdm head? cuz that's how my motor came.

 

oh, you didn't mention it was a JDM block.

I'm pretty sure you can run any H22 block with any H22 head.

 

I'm sure that will still work, but does anyone know how that would change your compression?

 

I always thought it was the pistons that gave some H22's higher compression ratios. I don't think the head has any effect on that. I'm not 100% sure though

 

I was never sure where the difference came from, i just know jdm is 10.6:1 and usdm is 10:1. it might be the same though.

 

yea, I just figured since the type-s gains compression in the pistons, the rest of the JDM motors did too. I guess that's just an assumption I made