idsigloo

Does anyone know the banjo bolt size on the s5 t2 primary fuel rail?

I'm wanting to put my marren fpd on my s5 t2 fuel rails. So I need the size of the hole on the opposite side of the fpd. Also, when I remove the fpd, can I put the banjo bolt on the other side in it's place?

I hope this makes sense.

Ya know what, is there enough clearence between the intake and engine to use my s4 n/a primary rail?

gingenhagen

No, that doesn't really make sense. The fpd is welded into place, so you'd probably want it welded closed.

The Griffin

I'm pretty sure the s5 rails are steel and the FPR and PD are welded on from the factory, unlike the S4 aluminum rails.you are either going to have to modify the S5 rails,use S4 rails,or built a custom rail.

idsigloo

I must have some random rail then, because the fpd isn't welded to the rail.

Anyhow, is there enough clearence to just reuse my s4 n/a rail?

gingenhagen

If you want to fit on your marren fpd, you should do something like this...

https://www.rx7club.com/2nd-gen-archive-72/marren-fuel-injection-fpd-retrofit-writeup-356838/

which uses a s4 n/a rail. Harder to do on a s4 turbo rail, since the direction is flipped and there's much less room.

idsigloo

I have already finished the marren fpd onto the s4 n/a rail. I did that before my engline blew. I just need to know if the clearence between the engine and intake will allow the s4 n/a rail to fit.

gingenhagen

what do you mean fit? fit a s4 n/a rail on a s4 n/a? fit with the marren fpd? the marren fpd fits if you stick it on the back of the secondary like in the writeup.