Identifying 1G fuel rails and FPRs

[idt512]

Is there anything visual to identify the differences of 1g fuel rails and FPRs?

1g fuel rail
91-94 turbo vs non-turbo
im aware of 90 model having a different inlet angle

1g FPR
turbo manual (37psi), turbo auto (43psi), non-turbo

 

[1990TSIAWDTALON]

The length is different on a 90 also, it is a longer rail which is the easiest way to id.

 

[bastarddsm]

There is a post somewhere on here. I think I made it.

 

[idt512]

I did not find one started by you bastarddsm. Here are the links to refs that i did read up on. As far as 1g FPRs the results were inconclusive as far as what was etched on them and whether it was concave or flat on top, which is why im trying to bring it up again.


http://www.dsmtuners.com/threads/oem-fpr-idetification-help.433004/
http://www.dsmtuners.com/threads/1g-vs-2g-fuel-rail-physical-difference.57354/
http://www.dsmtuners.com/threads/1990-swap-to-91-94-throttle-body.301466/

 

[Bud92gsx]

I had started a 1g fpr thread. It might be around here somewhere, but I never did finish it.