ok. i have a 1989 crx hf. the body is an hf and up until a few weeks ago i thought the motor was too. as it turns out i had a d15b2 (dx) with the mpfi and the (what i think it is anyways) an hf intake mani.

i didnt find this all that weird (except why somone would swap an hf for a dx). but im doing my b18a1 swap right now and im almost positive the hf hubs/knuckles are still on my car. i dont understand how this is possible being that the dx and si hubs/knuckles are supposed to be bigger than those of the hf?

ive tried to pop the dust ring out but it didnt do anything and my bseries axels definately dont fit in the hubs. is it possible to run the dx motor with the hf hub/knuckle set up?

just curious. TIA.

 

actually the code stamps on the DX and HF are both d15b2. It's just the HF is 8 valve using mpfi and the DX is 16 valve using DPFI.

 

my hf motor says d15b6... so its probably a dx motor and as for why the guy put it in there.... prolly blew up the hf and he had a dx motor laying around and the knuckles and hubs will work with the dx motor.

 

thats weird, how come you can use the dx hubs/knuckles for the b series swap if the hf knuckles work with the dx? as for CRX-Fluffy: its the 16 valve.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 5litereater &raquo;</TD></TR><TR><TD CLASS="quote">thats weird, how come you can use the dx hubs/knuckles for the b series swap if the hf knuckles work with the dx? as for CRX-Fluffy: its the 16 valve.</TD></TR></TABLE>

Because the axles are the same length and have the same splines on the tranny side.
The knuckle side is the side with the different spline counts.

Besides all that, who said that the tranny was ever swapped out? You can bolt a Y8 motor onto an HF tranny and it will work fine. It may be the HF tranny that's still in there with a DX motor bolted up to it.

 

ahh i c...looks liek i need the hub/knuckle conversion after all

 

I own a 88 HF the HF is a d15b2 with mpfi. The ECU has a diffrent fuel map and some other fuel economy things. The intake mani has short and small runners and tiny TB. Also the Exhaust manifold has the cat attached to it and not under the car as other cars. The HF tranny has long gears and is geared for fuel enconomy. The spline count is diffrent on the tranny and hubs thus why you need to swap the hubs out.