my friend just picked up a
a.) 92 prelude si, would the vin # tell me what engine was in it stock?
- it now has a vtec head and '99 jdm h22a block.
b.)should redline be about 6500rpm?
-noticed it had a p13 ecu in it.
c.)how to tell if ecu is obd 1(92-95) or obd 2(96-...)?
d.)are there #'s or specific things on the head to tell which gen the head came from?

I can get pictures, just need to know of what!

 

look under the hood and look for the engine code, if it's a 92 si it'll most likely say h23a1 and if it has a h22 block it would say h22a1 and redline for an h23 is 6500 so i'd say it's safe to say your buddy has an h23

 

naw it came with a swap, just trying to figure out which head was bolted onto the block. it says h22a on the block, and I got the info from the owner that it is a 1999 jdm block.

 

a. yes
b. no
c. couldn't tell ya
d. never paid attention. To me an h22 head is an h22 head.

 

yeah but the dizzy will be different I believe making obd1/obd2/obd3 needed.

 

o have driven the car, vtec kicks in, via the setting on the vafc. there is a vtec ecu just don't know obd1 or 2 so I don't know if I should suggest him getting a p28 and chip it because it has to be obd1 to do that.

 

p13 is obd 1

 

no, a p13 from a 96 will be obd2. if you can post pics of the stickers on the ecu someone should be able to tell you if its obd2.