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Unread 02-02-2012, 11:32 PM   #1
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1984 CJ7 
Join Date: May 2011
Location: , Australia
Posts: 142
Fuel line question

I'm building a CJ7 up with stroker and I am using a 93 YJ as a donor. I'm thinking of using the fuel lines from the YJ. My question is, should I be concerned about the fuel supply running down the same side (left frame rail) as the exhaust? Am I worried about nothing or will I have problems with vapour lock or effiency problems?

Thanks for your advice.

1984 CJ7 - Under construction
4.6L stroker with MPI & AX15 with D300
OME 2.5" YJ springs
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Unread 02-02-2012, 11:54 PM   #2
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1980 CJ7 
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I would say route them down the passenger side all the way to the radiator across the front then down the drivers side. Just my opinion.

My CJ suffers from vapor lock because my fuel lines & filter are near the exhaust pipes. I'm hoping to fix it soon.
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Unread 02-02-2012, 11:56 PM   #3
no balls
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2001 TJ Wrangler 
Join Date: Feb 2005
Location: Triangle, VA
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could use a heat shield? mine is ok next to my exhaust, but mine is a few inches from the frame
'79 CJ7 PICS HERE specs in profile - SOLD
'01 TJ 4.7/NV3550, 4" lift 33's stroked
'98 Chili Pepper Red XJ Sport, 4.0, AX15, 4x4 3" lift, 31" AT's
'79 CJ7 stock, 304

Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
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1 April 2007
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Unread 02-03-2012, 12:04 AM   #4
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1980 CJ7 
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I have Thermo Tec express sleeves on the fuel line where it comes across from the passenger side over the transmission. And another one as it runs along the manifold up to the front of the fuel rail. I'd really like to run a whole new line as I described in my other post.

What I haven't insulated yet are the fuel line, filter and pump that are in front of the gas tank next to the exhaust.
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