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Fuel Rail Swaps

riceline

By riceline,
in Engines & Forced Induction

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riceline Community Regular

riceline

Posted
Posted

Hey guys.

I have got a R33 RB30DET running the RB25DET head. It has come time that I want to do more upgrades and don't want to run low on fuel supply. After talking with SK i have found out about a fuel pump (Bosh 044) now I'm keen on finding out about injectors and fuel regulators.

I have got a R32 RB25DE fuel rail that I would like to use on it because it has the ability to use top feed injectors (rx7 550cc injectors). Is this possible at all?

Running it will not be a problem (I think) as I'm going to be getting a power fc to run it all. Also was thinking of using a Malpasi Rising Rate regulator.

I'm hoping to get about 300 - 350rwkw But I will be VERY happy when I am able run a mid 12 and will most probaly stop for a while when I get to this point (GF want's to get some Land and start house shopping and has agreed to let me keep spending money on the car till it runs a mid 12)

I have done some searching on here for info about using this setup but the thread I found was stopped half way through the process..

Take it easy guys

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Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi riceline, I think your question is "can I use an RB25DE fuel rail on an RB25DET inlet manifold", is that right?

Sorry I can't really help, I have used an RB25DE fuel rail but it was on an RB25DE top end (including inlet manifold). The Series V RX7 Turbo injectors fitted up to the fuel rail OK, the o'rings and injector wiring harness plugs where different though. :D

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MonstaS4 Collaborator

MonstaS4

Posted
Posted

Series 6 13B's and cosmo 20b's have 550cc side feeds which can be made to fit in the standard RB25 rail by either using a set of Sard or D-Speed collars or machining some up yourself ($250-$300 v's $10 + a few hours of your time!) Plugs are different, but i think laser/mazda 323 plugs are the same. I'm yet to prove this though as i'm in the process of making the collars atm.

Try this....

http://www.nissansilvia.co.nz/tech/howtous...0Binjectors.htm

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