Crossfire Injection Fuel Lines
Thread Starter
Intermediate
Joined: Jul 2015
Posts: 40
Likes: 1
From: Graham WA.
Crossfire Injection Fuel Lines
I need to make new "crossover tube". The one that connects the two throttle bodies... My car is not available to look at so I am coming here for some help...
What size is the crossover tube tubing?
What size and thread are the connectors?
Are these connectors female or male?
Thanks in advance for your help...
Steve
What size is the crossover tube tubing?
What size and thread are the connectors?
Are these connectors female or male?
Thanks in advance for your help...
Steve
Racer
Joined: Apr 2010
Posts: 372
Likes: 23
From: Harper Woods MI
This is something I have always planned on doing. It's too bad that the Crossfire Injection website (makers of the Renegade intake) didn't still produce the fuel line with the pressure gauge.
They list it with this info.
"Custom bent 3/8 316 polished stainless tubing, -6AN fittings, fuel block and 15psi gauge."
Small photo is from the Crossfire Injection website. The other photo is something I found in the internet of something I was planning to do.
http://www.crossfireinjection.net/catalog.htm
They list it with this info.
"Custom bent 3/8 316 polished stainless tubing, -6AN fittings, fuel block and 15psi gauge."
Small photo is from the Crossfire Injection website. The other photo is something I found in the internet of something I was planning to do.
http://www.crossfireinjection.net/catalog.htm
Le Mans Master
Joined: Aug 2017
Posts: 6,940
Likes: 1,490
From: New Jersey
Corvette central also sells them. When mine cracked I ran a 5/16 hose on two barbs with clamps for a month or so. For that short run 5/16 is plenty. Factory is 3/8. I want to say I used a 5/16 barb on a 1/2" fitting with the flare on the end to seal on a compression style seat, the one in the throttle body base. I think the thread pitch npt... it may have been 3/8. Bought the parts at a local store as it was an emergency. That's also how I test my fuel pressure now.
Burning Brakes
Joined: Feb 2013
Posts: 1,173
Likes: 152
From: norway
This is something I have always planned on doing. It's too bad that the Crossfire Injection website (makers of the Renegade intake) didn't still produce the fuel line with the pressure gauge.
They list it with this info.
"Custom bent 3/8 316 polished stainless tubing, -6AN fittings, fuel block and 15psi gauge."
Small photo is from the Crossfire Injection website. The other photo is something I found in the internet of something I was planning to do.
http://www.crossfireinjection.net/catalog.htm
They list it with this info.
"Custom bent 3/8 316 polished stainless tubing, -6AN fittings, fuel block and 15psi gauge."
Small photo is from the Crossfire Injection website. The other photo is something I found in the internet of something I was planning to do.
http://www.crossfireinjection.net/catalog.htm
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
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Team Owner
Joined: Sep 2003
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The lines themselves I always thought to be 3/8 tubing so the fittings would be 3/8 INV FLARE which would be a 5/8-18 thread and on the tubing MALE.
To confirm you just buy at any auto parts store a 3/8 INV FLARE nut and try on your car.
AS HRR mentioned there is NO NPT - NONE - 0
A quick confirmation I'd think for tubing size etc would be to try a 5/8 open end on the fitting. If 5/8 fit that I'd think would confirm 3/8 tubing and the 5/8-18 thread OR a 3/8 open end on the tubing. Maybe both if you're a doubter!
To confirm you just buy at any auto parts store a 3/8 INV FLARE nut and try on your car.
AS HRR mentioned there is NO NPT - NONE - 0
A quick confirmation I'd think for tubing size etc would be to try a 5/8 open end on the fitting. If 5/8 fit that I'd think would confirm 3/8 tubing and the 5/8-18 thread OR a 3/8 open end on the tubing. Maybe both if you're a doubter!
Last edited by WVZR-1; Dec 24, 2017 at 06:46 AM.
Le Mans Master
Joined: Aug 2017
Posts: 6,940
Likes: 1,490
From: New Jersey
Definitely not NPT. Look at the fittings on that lower photo. The ports in your throttle bodies are 3/8" female flare. Using NPT threaded fittings into flare threads will leak, and will damage the threads in your throttle bodies. NPT threads are tapered, and flare fitting threads are not tapered.
Team Owner
Joined: Sep 2003
Posts: 25,384
Likes: 2,736