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View Full Version : sohc to dohc


Kenfu
03-09-2005, 05:57 PM
will a 1.8 dohc head fit on a 1.8 sohc engine (1992 protege)
ROB-80E
03-09-2005, 10:01 PM
No. Not if it's a BP series.
kcbhiw
03-15-2005, 11:03 AM
Yes, the 1.8 DOHC (BP) head will interchange with the 1.8 SOHC (B8) in terms of bolting up. The blocks are identical.
Salmon_Rob
03-15-2005, 01:37 PM
if you search cardomain for bizob, he has a kitted first gen, which is gorgeous, he did that
Brian MP5T
03-15-2005, 02:16 PM
It might be easier to just buy a complete engine,

www.carparts.com
D323
03-20-2005, 04:21 PM
problem is the SOHC is lower compression than the DOHC. If you do put the DOHC head on I would reccomend swapping the pistons out for some Miata ones or something.
1stgensupercar
03-21-2005, 08:07 PM
i have done the swap and it is easier to doa whole engine rather than the head

when u do the motor u will need a trans and mounting bracket
and a few extras
1stgensupercar
03-21-2005, 08:11 PM
hey d323 where did u can u get that computer for 30$
D323
03-22-2005, 04:39 PM
the ECU?

j/y.

hit up www.car-part.com (http://www.car-part.com)
D323
03-22-2005, 04:54 PM
your right, swapping motors is probably easier than a head swap b/c you would also need to piston swap or face an uber low CR.
Whole motor in and out vs. head pistons and all the other stuff you *should* replace while you have the bottom end apart.
protegechris
03-29-2005, 05:36 PM
The swap seems simple enough :) I'm picking up a 70k mile BP for 231 bucks, 60 to ship it :) That's what I would do, SOHC is so yesterday :P