NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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1Revvin7

10-09-2003 05:34 PM

I want to run an lines on my primary rail, but S5 rails don't unscrew like s4 units. Could I swap an s4 t2 or n/a unit onto my s5 block??

Rotaryman88

10-09-2003 06:53 PM

If I can find my primary rail, I'll test fit it for you and find out...

did you want to do the same on the secondaries or did u already do that? I can check that too,lol....

mazdaspeed7

10-09-2003 07:08 PM

I know a S5 rail fits on a S4, so I would assume a S4 rail also fits fine on an S5.

j9fd3s

10-09-2003 07:09 PM

Quote:

Originally Posted by mazdaspeed7' date='Oct 9 2003, 04:08 PM

I know a S5 rail fits on a S4, so I would assume a S4 rail also fits fine on an S5.

bingo!

turborotor

10-09-2003 07:27 PM

S4 primary rail fits fine on S5 engine block. Must use s4 bolts since rail has thicker mount. That's how i'm running mine

mazdadrifter

10-09-2003 08:14 PM

if you want to use the s4 secondary rail on your s5 lim then you will need a couple spacer washers so that the grommets on the injectors don't crush.

1Revvin7

10-09-2003 10:13 PM

Thanks for the tip mazdadrifter.. https://www.nopistons.com/forums/pub...DIR#>/wink.png

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