Full Throttle Speed AFPR

[KFT0001]

Me and a friend just installed one of these in each of our cars and both of ours are leaking. I can't visually see a leak on mine, but I can smell it. On my friend's car though, you can see fuel puddled up on top of the lower brass fitting that's included with the AFPR. We oiled the o-rings before we popped them in the fuel rail, and we do have the units installed completely flush on the rail (needed to grind away some extra metal on the rail leftover from it being cast). Is there a step we missed? Should we have used something on the brass fittings before threading them into the AFPRs?

 

[Scrymerr]

There is not secret step to installing the FPR. Im not even sure I used teflon tape on my FPR. Mine was a CAS, not a full throttle speed, but I am pretty sure they are similar. Did yours come with a fuel gauge??

 

[KFT0001]

No, it didn't come with a pressure gauge.

 

[98TsiAWD]

Mine bolted flush to the fuel rail just fine, no lube.

 

[cornbread]

Mine leaked a bit from the return fitting at the bottom. I didn’t use teflon take so I took it back off and put some teflon tape on it and the leak stopped.

 

[Darksyne]

Ask the creators:

Full Throttle Speed Forums

 

[nine5raptor]

If it is a pipe fitting, and I am 99% sure it is, then you should have used teflon tape on it.

 

[spoolinawddsm]

Originally posted by nine5raptor
If it is a pipe fitting, and I am 99% sure it is, then you should have used teflon tape on it.

i thought you werent supposed to use teflon on fuel related parts, the gas eats the teflon. I used jb weld in the threads.

 

[quarter]

teflon is fine.

the only reason youre told not to use teflon is becuase you usually use aluminum AN fittings on fuel lines. with those, the threads arent doing the sealing, so theres no point.

 

[spoolinawddsm]

Originally posted by quarter
teflon is fine.

the only reason youre told not to use teflon is becuase you usually use aluminum AN fittings on fuel lines. with those, the threads arent doing the sealing, so theres no point.

well this guy is talking about pipe thread which doesnt use the same sealing method as -an fittings. So teflon would not work well.

 

[RuBiCaNT5X]

-AN fittings don't get teflon tape as said prior, but NPT always do because the threads do the sealing. Most non-automotive NPT stuff get teflon tape or teflon goo like natural gas line and so forth...

 

[nine5raptor]

You got that backwards.

Teflon is for pipe threads.

edit: sorry, that was in response to spoolin...

 

[spoolinawddsm]

yes, but have you ever seen what gas does to teflon over extended periods of time? This is why i chose not to use teflon.

edit: i am aware that NPT is intended for the use with teflon but, all im trying to say is not for automotive purposes such as fuel.

 

[KFT0001]

Originally posted by spoolinawddsm
yes, but have you ever seen what gas does to teflon over extended periods of time? This is why i chose not to use teflon.

edit: i am aware that NPT is intended for the use with teflon but, all im trying to say is not for automotive purposes such as fuel.

That's exactly why I didn't use teflon tape the first time. I figured that the fuel would deteriorate the teflon tape after a while. Anyway, I did end up pulling it off and putting tape on the threads, but that only exposed where the real leak was coming from - the plug in the gauge port was loose (same on my friend's). Everything is sealing up fine now, but should I worry about future fuel leaks if the teflon tape does deteriorate?

 

[madracer247@aol]

hey guys whats a good gauge that works with the fullthrottle fpr and mounts the in the engine bay???

 

[KFT0001]

Any gauge will be mountable under the hood. Just pick where you want it and get the fittings/lines you need to place it there. Also, I believe all fuel gauges have 1/8" ports on them (at least all the ones I've seen), so any gauge will work with the afpr. I'm using an Autometer 60psi gauge.

 

[98TsiAWD]

hey guys whats a good gauge that works with the fullthrottle fpr and mounts the in the engine bay???

Like he said, the AFPR comes with a 1/8" NPT fitting on it to install a guage. It should have a brass plug in it right now. Just get a Fuel pressure guage from www.summitracing.com and screw it into there with teflon tape. 1/8" NPT of course.

 

[madracer247@aol]

Hey well what gauge should i get they have 3 this one:
Gauge, Sport-Comp, 1-1/2" Fuel Pressure, 0-100 Psi, Silver Face, Mech
Gauge, Ultra-Lite, 2-1/16" Fuel Pressure, 0-100 Psi, Mechanical
Gauge, Ultra-Lite, 2-5/8" Fuel Pressure, 0-100 Psi, Mechanical.
They are all pretty much the same But let me know which is better for me ok guys thx

 

[92awddsm]

I use the 1 1/2" silver face. Works fine but I would recomend a liquid filled gauge for monting under the hood. Engine vibration makes it hard to read a non-liquid filled gauge. Also the larger gauges make it a tight fit under the hood.

 

[madracer247@aol]

ok cool thx guys i will see what summit has

 

[98TsiAWD]

Hey well what gauge should i get they have 3 this one:
Gauge, Sport-Comp, 1-1/2" Fuel Pressure, 0-100 Psi, Silver Face, Mech
Gauge, Ultra-Lite, 2-1/16" Fuel Pressure, 0-100 Psi, Mechanical
Gauge, Ultra-Lite, 2-5/8" Fuel Pressure, 0-100 Psi, Mechanical.
They are all pretty much the same But let me know which is better for me ok guys thx

We were talking about an underhood guage that screws into the afpr. Those are inside guages, and if you buy one of those it really should be electrical not mechanical. (you dont want to run fuel lines inside the car to the guage do you?)

They should be like $10, just summit brand.

 

[gritsak]

they make teflon tape for fuel related parts..they even have it at lowes...i always just use the regular teflon tape and never had a problem..the threads are what seal it anyways, the tape just helps

 

[madracer247@aol]

ok cool i am just going to buy a summit racking gauge better thx alot guys

 

[DSMJim]

We were talking about an underhood guage that screws into the afpr. Those are inside guages, and if you buy one of those it really should be electrical not mechanical. (you dont want to run fuel lines inside the car to the guage do you?)

They should be like $10, just summit brand.

Those gauges are not ment to run inside the car. You mount them on your hood in a hood pod. You dont wanan run fuel inside the car, not a great idea.

 

[madracer247@aol]

So should i just get the summit racing liquid filled gauge??