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Unread 03-21-2013, 11:39 AM   #1
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1981 CJ5 
Join Date: Mar 2013
Location: Citrus Heights, Ca
Posts: 38
Fuel Pump Questions

I pulled my fuel tank this week and was pretty depressed with the condition of the interior. Lots of floaters, rust, and what looked like raw crude oil. The pump was covered in rusty shale and how fuel got through the filter cover is amazing by itself. Obviously the tank will need to be cleaned, Iíve never cleaned a fuel tank so Iím open to suggestions.

My old motor was the 151 Iron Duke. My new motor is a CPI V6 Vortec, a crate motor.

I assume I was going to have to replace the in tank pump assembly anyway due to the larger motor. Is that accurate, or can I use the original OEM replacement part? If I have to upgrade to a different pump what do you suggest?

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Unread 03-21-2013, 12:25 PM   #2
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Join Date: Aug 2002
Location: Colorado
Posts: 11,823
The OEM pickup should be fine. You're going to need an electric pump capable of pushing the PSI that CPI needs. IIRC, that's somewhere in the 50-60psi range. The 151 pump was on the block and mechanically driven by an eccentric on the cam.
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Unread 03-21-2013, 07:19 PM   #3
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1974 CJ5 
Join Date: Jul 2012
Location: Stuart, FL
Posts: 237
Replace the tank with an MTS poly tank. You'll thank me later.
Plus if you're going to the extent to do anything regarding the tank, replace the in tank pump. You kick yourself later if you don't.
1974 CJ5 all stock except for Rocky Road SOA
Completely for hunting - not for show or rock climbing
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Unread 03-21-2013, 09:33 PM   #4
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1978 CJ5 
Join Date: Sep 2009
Location: ohio
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I went with the MTS poly tank. prob will go down as the easiest repair on my jeep. Call MTS direct much cheaper than the dealers.
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Unread 03-22-2013, 10:24 AM   #5
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1981 CJ5 
Join Date: Mar 2013
Location: Citrus Heights, Ca
Posts: 38
I'll look up the MTS Tank.

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Unread 03-22-2013, 03:29 PM   #6
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1986 CJ7 
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Location: worcester, Ma
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steel fuel tanks suck!
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