Fuel Rail Fitting

[Johnboy]

Looking for a part number or a location where I can purchase the fitting that fits on the fuel rail. I want to hook one up on occasion to check fuel pressure. I've seen in other posts that it is a standard A/C fitting, but no part number or location to buy.

Thanx

 

[strikeeagle]

So far as I know, the end of the rail is a -4 AN...

 

[ChrisCairns]

The -4 AN threads are the same but the sealing surface ain't the same.

The fuel fitting on the rail is an SAE flare which is 45 degrees. The -AN flare is a 37 degree.

What you want is an SAE 1/4" female inverted flare. But to make it easier Caspers has a neat one already made up along with a gauge and line. Dunno if the price has gone up but a few years back I bought two from them for $30 each.

 

[RATROASTER]

Schrader Valve

I'm curious, do I have to remove the Schrader Valve to get an acurate reading of fuel pressure?? I used an AN-4 female to 1/8" NPT female adapter.................no problems sealing the connections. When they state 40 lbs of fuel pressure under what conditions are the talking......idle...............1 lb of boost??

Thanks

DK

 

[GN SBS]

Originally posted by ChrisCairns
But to make it easier Caspers has a neat one already made up along with a gauge and line. Dunno if the price has gone up but a few years back I bought two from them for $30 each.

Kirban's Performance also sells these and will give you the fitting separately if you ask.

 

[MoJoe]

More info... anyone?

Both Casper's and Kirban have T fittings, which are all 45* flare (non AN). Neither make progress toward an AN, or other "normal" fitting. If you want a simple diag gauge to set fuel pressure, either have a pre-made underhood gauge, too.

I, too, am looking for a fitting to attach a permanent fuel gauge (with isolator) inside the car. I have found a Parker 664FHD "female flare to male pipe thread" brass fitting, but not a source to purchase it.

As a standard AC port, there might be hope in looking up AC fittings, but I haven't gotten there yet...

BTW, that is a "flare" fitting, not "inverted flare" which shows up as brake line fittings.

Does anyone have a part # AND purchase source? Or a way to safely/correctly seal a 37* AN-4 to the 45* 1/4" fitting?

MoJoe

 

[John Larkin]

I bought a 180° -4AN hose end fitting from Russell. It's not in the speed catalogs usually but they do exist if you call. It's silver, stainless I think, non-anodized anyhow. I plumbed my fuel pressure gauge with this on the end of the Casper's T with the extra port for draining the tank. It works and seals fine. It's a hose end so you'll have to install a -4 hose into it instead of just screwing on an adapter.

 

[87LtdT]

I have brass fittings that have an internal spherical seal that screw onto the fuel rail and have a 1/8" NPT male on the opposite end.

$7 each including postage.

E-mail me off line.

Bob

rwk@insightbb.com