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Quick tech question #1019927
06/24/11 09:56 PM
06/24/11 09:56 PM
Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
87MO DAK Offline OP
member
87MO DAK  Offline OP
member

Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
Can the fuel pressure reg be mounted to the fire
wall,if using ST braided lines? I have seen many
car's & truck's done like so..The last time I went
through tech,the guy told me to change it ???

Re: Quick tech question [Re: 87MO DAK] #1019928
06/24/11 10:00 PM
06/24/11 10:00 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
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Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Can the fuel pressure reg be mounted to the fire
wall,if using ST braided lines? I have seen many
car's & truck's done like so..The last time I went
through tech,the guy told me to change it ???




Should be 6" off the firewall

Re: Quick tech question [Re: 87MO DAK] #1019929
06/24/11 10:09 PM
06/24/11 10:09 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
master
70AARcuda  Offline
master

Joined: Jan 2003
Posts: 9,826
las vegas

as per nhra rulebook...

1:5 FUEL SYSTEMS
Location: All fuel tanks, lines, pumps, valves, etc. must be outside of the driver’s compartment and within the confines of the frame
and/or steel body. Cool cans, fuel-distribution blocks, etc. must be
located at least 6 inches forward of the flywheel/bellhousing area on
rear-wheel-drive (RWD) vehicles, and on opposite side of
flywheel/housing area on front-wheel-drive (FWD) vehicles. Fuel
pressure gauge isolators, with steel braided line, may be mounted
on firewall

Last edited by 70AARcuda; 06/24/11 10:12 PM.

Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: Quick tech question [Re: MR_P_BODY] #1019930
06/24/11 10:11 PM
06/24/11 10:11 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
Quote:

Quote:

Can the fuel pressure reg be mounted to the fire
wall,if using ST braided lines? I have seen many
car's & truck's done like so..The last time I went
through tech,the guy told me to change it ???




Should be 6" off the firewall




i have often wondered why a firewall mount was prohibited. i would think if mounted on the inner fender, and a crash into the wall tore off the fender and inner structure, the firewall mount would be safer.

Re: Quick tech question [Re: moparx] #1019931
06/24/11 10:22 PM
06/24/11 10:22 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Quote:

Quote:

Can the fuel pressure reg be mounted to the fire
wall,if using ST braided lines? I have seen many
car's & truck's done like so..The last time I went
through tech,the guy told me to change it ???




Should be 6" off the firewall




i have often wondered why a firewall mount was prohibited. i would think if mounted on the inner fender, and a crash into the wall tore off the fender and inner structure, the firewall mount would be safer.





Their main concern is a clutch or trans explosion
which could take it out

Re: Quick tech question [Re: moparx] #1019932
06/24/11 10:23 PM
06/24/11 10:23 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
master

Joined: Oct 2003
Posts: 7,506
Az
Quote:

Quote:

Quote:

Can the fuel pressure reg be mounted to the fire
wall,if using ST braided lines? I have seen many
car's & truck's done like so..The last time I went
through tech,the guy told me to change it ???




Should be 6" off the firewall




i have often wondered why a firewall mount was prohibited. i would think if mounted on the inner fender, and a crash into the wall tore off the fender and inner structure, the firewall mount would be safer.



They have issues with exploding clutches / convertors. I liked the fire wall too, but had to move mine to the inner fender well.

6698854-fuelgageline.jpg (105 downloads)

Fastest 300
Re: Quick tech question [Re: Crizila] #1019933
06/24/11 10:28 PM
06/24/11 10:28 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
thanks guys. i never considered a clutch/converter failure affecting the main firewall structure... just the floorboard/tunnel area. my mistake.

Re: Quick tech question [Re: moparx] #1019934
06/24/11 10:39 PM
06/24/11 10:39 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
master

Joined: Oct 2003
Posts: 7,506
Az
Had a MAJOR clutch explosion in 65. Took out the brake line ( single master car - no brakes ), flattened the rt frt tire, took out the bell housing so the engine laid down on the center link. Fuel line stayed in tact. Time slip said 79 mph. Loooong shut down area and tall grass saved my fanny - shorts were a through-away


Fastest 300
Re: Quick tech question [Re: Crizila] #1019935
06/24/11 11:17 PM
06/24/11 11:17 PM
Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
87MO DAK Offline OP
member
87MO DAK  Offline OP
member

Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
Thanks ..was not sure ,with the braided line's.
That if it was the line's or the reg,crossing over the
bell housing.

Re: Quick tech question [Re: 87MO DAK] #1019936
06/25/11 09:21 AM
06/25/11 09:21 AM
Joined: Mar 2004
Posts: 2,475
SW Ohio
C
cgall Offline
top fuel
cgall  Offline
top fuel
C

Joined: Mar 2004
Posts: 2,475
SW Ohio
Your fuel line must also be routed outside the frame rail, or be run through a length of pipe in the bellhousing area to shield it.

Re: Quick tech question [Re: cgall] #1019937
06/25/11 10:49 AM
06/25/11 10:49 AM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
master

Joined: Oct 2003
Posts: 7,506
Az
Quote:

Your fuel line must also be routed outside the frame rail, or be run through a length of pipe in the bellhousing area to shield it.


Don't think that is called for as long as it is a steel braided line.


Fastest 300
Re: Quick tech question [Re: Crizila] #1019938
06/25/11 11:46 AM
06/25/11 11:46 AM
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL Offline
Senior Member of the Junior Dragster Club
WILD BILL  Offline
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Posts: 10,542
BROOK PARK, OH
Quote:

Quote:

Your fuel line must also be routed outside the frame rail, or be run through a length of pipe in the bell housing area to shield it.


Don't think that is called for as long as it is a steel braided line.




Correct. SS braided line would be fine in that area.

FWIW, my reg is mounted to my fender about 6"s forward of the firewall. The anal retentive tech insp said he felt it should be farther forward still as the forward edge of the bell housing was forward of the firewall and their fore my reg was within the 6" zone.


So, I've gotta move my reg forward about an inch.

Re: Quick tech question [Re: WILD BILL] #1019939
06/25/11 12:16 PM
06/25/11 12:16 PM
Joined: Mar 2004
Posts: 2,475
SW Ohio
C
cgall Offline
top fuel
cgall  Offline
top fuel
C

Joined: Mar 2004
Posts: 2,475
SW Ohio
I haven't run any NHRA races since 2002, but back when I ran S/ST I had a braided fuel line on the motor side of the frame, NHRA tech at Indy said to move it or shield it. I cut a 2 ft. long piece of 1" conduit and slipped it over the line in the bellhousing area...passed tech. Maybe he was an over-aggressive type...

Re: Quick tech question [Re: cgall] #1019940
06/25/11 05:45 PM
06/25/11 05:45 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
master
70AARcuda  Offline
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Joined: Jan 2003
Posts: 9,826
las vegas
Lines: All non-OEM fuel lines (including gauge and/or data
recorder lines) must be metallic, steel braided, or NHRA-accepted
“woven or woven-pushlock.” A maximum of 12 inches total (front to
rear) of non-metallic or non-steel braided hose is permitted for
connection purposes only; individual injector nozzle and motorcycle
fuel lines are excluded. Fuel lines (except steel braided lines) in the
flywheel/bellhousing area must be enclosed in a 16-inch length of
steel tubing, 1/8-inch-minimum wall thickness, securely mounted as
a protection against fuel-line rupture. Fuel lines may not be routed
in the driveshaft tunnel. It is mandatory that fuel lines passing
supercharger drive belts be steel braided, NHRA-accepted woven
or woven-pushlock, or be enclosed in protective steel tubing. A
current list of NHRA-accepted woven or woven-pushlock fuel lines
is available on NHRA.com. All NHRA-accepted fuel lines must use
ends that are specifically designed for the type of fuel line being
used. No hose clamps allowed on NHRA-accepted fuel lines.


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: Quick tech question [Re: 70AARcuda] #1019941
06/25/11 07:34 PM
06/25/11 07:34 PM
Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
87MO DAK Offline OP
member
87MO DAK  Offline OP
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Posts: 115
NY,Poughkeepsie
Thanks for the info

Re: Quick tech question [Re: 87MO DAK] #1019942
06/25/11 07:39 PM
06/25/11 07:39 PM
Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
87MO DAK Offline OP
member
87MO DAK  Offline OP
member

Joined: Dec 2010
Posts: 115
NY,Poughkeepsie
Well that I have to change it .What about the reg
bracket that bolts on the carb flange stud's?
Just wondering ??? or other ways ?
Thank's mopart's.

6699932-leb.jpg (130 downloads)






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