CRX dx cylinder head swap

[Stavros]

i have a 1990 CRX dx, so its got a D15A1 engine in it... my question is, are there any VTEC DOHC cylinder heads that will mount up properly. I know i will need new ECU, wiring harness, intake, etc... i am more curious to find out if the oil/coolant holes from my block will line up properly with a beefier head.

i am REALLY new to the honda scene and have no patience for the damn engine numbers.... if anyone knows what i could swap in there, tell me what car its from pls? then give me the numbers after :P

thanks in advance

[91civicDXdude]

you have a D15B2 in your CRX DX. the D15A1 came only in 84-87 CRX.

and to answer your question, no, there are no DOHC heads (VTEC or not) that will bolt up to a d series SOHC block.

You can, however, use any cylinder head from any 88-00 D series SOHC engine, including the VTEC heads, D16Z6 and D16Y8; although any will work.

the reason is simple. DOHC VTEC engines have a larger bore, so the cylinders are not located in the same place, plus the oil/coolant passages are located in different places as well as the head bolt locations. In a word..Impossible.

[Stavros]

thanks

[jeef]

Originally Posted by Stavros

thanks

thats refered to as the mini me swap, they tend to be notorious for overheating... but i've had mine for about a year now, living in Miami Fla with no problems so yeah, pretty sure if its not going to die in the heat here i shouldn't have a problem...

[91civicDXdude]

i've had about 4 mini-me swaps and none have ever overheated.

[travagliante]

same. Oh and if you want to put a dohc cylindar head on only 1 out of ten line up..lol
and to put a d16a1 or dohc zc head on i believe like 4 out of ten bolts line up.

lol
sorry but all d-series blocks. dohc or sohc have the same bore.