I was wondering if anyone knows the stock oil press reg pressure? According to the FD FSM, the stock relief is 110 psi. Racing beat sells a 130 psi race only regulator for $90.00. my question is, is the FD one an upgrade? if not how would the RB 130 psi one work for occasional street use but mostly track use? 2nd part, i am using s5 gauges in my fc, but i was gonna use an FD oil pressure sender./ will it read correctly or are the voltages different? thanks!

 

come on now! 16 people and no one knows? hmmm

 

the FD oil press sender wont work with fc gauges....FYI

 

according to Racing Beat, you'd have the shim the front regulator 1/8 inch and a hardened pump is recommended.

 

yea, the shims come with their regulators...but whats this about a hardened pump?

 

if i undertsood it, they essentially said that if you don't use a hardened pump (Mazda Factory Race) with sustained pressures over 100 PSI, then the stock pump will kill itself maintaining such a high pressure.

 

woa..I guess I need to find a hardened pump then. Since FD uses 110PSI regulator, is that pump hardened?

 

not sure , but since it was designed to run at that pressure it's probably safe. question: aren't the 13B-REW front housings the same as the 20B? it should use the same pump, no?

 

I havent compared them side to side. It was my understanding that the 20B used alot of the FC parts. It uses FC CAS, oil pressure regulator and rotors

 

well i don't know enough about the intimate details of the 20B to speak intelligently on them being more akin to the 13B-T as opposed to the -REW, so hopefully someone else that knows will step in and settle this for you.

maybe you could try to PM Jeff20B or Evil Aviator (on this board) with your question. i know they have more 20B knowledge than i can offer ...

sorry , but i'll stay posted

 

The 20B has lots of S5 goodies. Evil A will probably have plenty of links to help answer your questions.

 

Thanks guys, but this is a question for a mechanic. These are not issues with my 20B project, so I don't know anything about them.

BTW, aren't the shims only for the really old rotary engines?

 

yea, ive been checkin on his links. lots of good stuff in there. also, after a lil research, the FD and S5 turbo use the same oil pump dimensions; 50 X 17.5mm