my buddy has a 90 prelude with a built B20, he claims he cant find anything aftermarket as far as fuel rails or regulaters. Anybody know who makes em? My guess was buy them for another B series engine and see if they fit.

 

What b20does he have?

 

It sounds like he has the B20A/B21A that came with the old 1990ish Preludes...

Your buddy is probably right about not being able to find engine components for it. Even though it is a B series, it sort of isn't because from what I understand pretty much nothing is useable from all of the other Honda B series engines.

 

correct the prelude b series motors are in no way related to regular b-series

 

yup. aside from their block differences, they have cable driven trannies weird fuel system, and the list goes on and on.