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02-16-2008, 09:15 PM
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#1 |
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Active Member
 Join Date: Dec 2004
Location: NJ
Posts: 6,507
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72 Jimmy fuel line sizes
Getting ready to order all new fuel lines for '72 Jimmy, 4x4, 350, orig. quadrajet, auto trans, a/c. Didn't know there are 2 different supply line sizes. Is this a 6cyl vs 8 cyl thing or carb size? My supply side line looks like 5/16 i.d.? Anyone know for sure what I should order , 5/16 or 3/8? All the returns sizes seem to be 1/4''
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02-16-2008, 09:18 PM
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#2 |
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Senior Member
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,843
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Re: 72 Jimmy fuel line sizes
Don't know for sure,but isn't bigger also better?
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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02-17-2008, 06:09 AM
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#3 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Re: 72 Jimmy fuel line sizes
Yes, V8 trucks came with 3/8, and 6 cylinders with 5/16. Just use 3/8 - don't even screw around with the 5/16 tubing. I can't even begin to imagine why they screwed around with 2 different sizes of tubing at the factory. Stuff like this is why the US automakers were not competitive going into the late '70s and '80s.
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Tim |
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02-17-2008, 06:57 AM
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#4 |
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Active Member
Join Date: Dec 2004
Location: NJ
Posts: 6,507
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Re: 72 Jimmy fuel line sizes
Jaroa44sr, that was my thought. By the way that other jimmy rsd support was junk.
Blazer70, thanks for the info. makes sense. |
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02-18-2008, 05:56 AM
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#5 |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,843
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Re: 72 Jimmy fuel line sizes
Hey, sorry we didn't get meetup on Sat, Just to many problems to solve in one day. Maybe next time.
What if you go with 1/2" tubing?
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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02-18-2008, 10:15 AM
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#6 |
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Registered User
Join Date: Jan 2008
Location: PENDLETON,INDIANA
Posts: 271
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Re: 72 Jimmy fuel line sizes
I Think Most Of The Other Lines Are For Egr What Not??
Not Sure Think 72 Was First Year For Charcoal Canister But I Dont Know That I Have A Canister On My 72 But Definitly Not On The 70 3/4 Ton That A Got Rid Of But That Does Not Clarify For Sure Imsure Somebody On Here Can Say For Sure |
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