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RX7 550cc Injs in RB26

BoOsTeD_RB26

By BoOsTeD_RB26,
in Engines & Forced Induction

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Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi BoOsTeD_RB26,

RB26DETT (R32 & R33) uses top feed, low impedance injectors @ 440cc. Whilst RX7 Series V Turbo injectors are top feed, high impedance injectors @ 550cc.

As well as the impedance mismatch, the RX7 injectors are getting a bit old now and we have to buy 8 or 9 to get 6 good ones.

With 10% over presssure (which is within acceptable tolerances) via an adjustable fuel pressure regulator you can get the standard GTR injectors slightly over 500 cc's, so I don't know why you would bother with the RX7 injectors. They are a good upgrade for GTST's which have 270 cc high impedance injectors, but not so much of a good thing for GTR's.

Hope that helps

BHDave Grand Master

BHDave

Posted
Posted

Series 4 Turbo has low imp injectors if i remember correctly. So they'll fit in the manifold and rail, need a new plug and not require any screwing around with the loom.

But these are even older (86-88) unless you give Mazda a very thick wad of cash for some new ones.

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