I am attempting a motor swap in an older car. I have pretty much rulled out the B-series as being able to fit. I will probably be stuck using a SOHC D-series due to lack of depth in the engine compartment and mating it to an 89-91 Si tranny. What is the best block to build for an all motor (no room for turbo or supercharger) and possibly nitrous setup? What VTEC head would be best?? I am planning on wiring the car as ODB1 inorder to use a P28 or Hondata. If I can fit the 90-93 Teg DOHC D-series into the car would it be better than the single cam?

 

d15 bottom d16 head = all motor madness

 

Why is the D15 better??? Wouldn't I want more displacement?

 

someone told me a z6 bottom end and a y8 head was putting down 124whp stock...not sure about it cause i havent seen it before but if anyone has some input on it (it was in a 90 hf crx) i know the d16z6 has 125 but i dont believe thats to the wheels

 

the d15 bottom ends have a better rod/stroke ratio and with a z6 or y8 vtec head the compression ratio will be slightly increased. this is what makes up for the difference in displacement.

for obd0 vehicles i'd go with a zc over a mini-me. the swap is easier and they have more potential because of their dohc design.

 

A zc has more potential than a sohc vtec?lol i doubt it.

 

yes, a zc has more potential because it has dual over head cams and although the aftermarket support is limited its much better suited for turbo. my dad has a zc and i have had several d16z's and there really isn't any comparison in my mind. yes, the zc doesn't have vtec, but for obd0 cars i think its a much better option.

 

The car is currently carburated so I will just wire it for what will work best (ODB0, ODB1) and I don't have room for a turbo unless I want it sticking through the radiator and front grill. The motor in the car was an old E-series in which the intake and exaust are both on the backside of the head. I am unsure if I can fit a SOHC let alone the deeper DOHC. Will the 90-93 Teg motor bolt to an 89-91 SI tranny? I see that motor refered to as a ZC but some people say it will not bolt up to the Si tranny and you have to get the JDM ZC to bolt up.

 

Teg motor wont bolt to the si tranny but the zc will.

 

the zc will bolt to a si tranny... (info on the zc versus the vtec) a stock sohc vtec d-series engine 129 whp the stock zc sohc non-vtec has 130 whp so you get one more hp out of a zc then a vtec,