so my mate's bought me a crash damaged eg with an injected d15 and another tidy eg with rod knock and a carby d15. I understand the complexities of converting carby to injected and I very much want to avoid those problems, so am i able to swap the long block and leave the tidy one as a carby? will the manifolds etc match up?

 

Is your injected D15B a vtec unit?

 

Yes you can swap just the engine and bolt on either kind of intake. Most injected engines do not have a place to mount the mechanical fuel pump though.

 

no, both non vtec

 

you can get low pressure electric fuel pumps for carby motors can't you? any idea what pressure I'd need?

 

The short block is the same. The head is different in terms of the carbed version having a place to mount the mechanical fuel pump (the fuel injected heads are cast with the mounting bosses, but you would have to cut out part of the head, it's do-able, but you'd have to take the head off to flush the chips out) and the cam is different (extra lobe to drive the mechanical fuel pump) you can either run a low pressure electric fuel pump, swap heads, or modify the head on the fuel injected engine and swap the cam.

 

Yes. The pressure is not critical, they are usually about 5 psi. Just don't use a high pressure fuel injection pump.