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> Fuel Pump Question, tech question
BadToTheBown
post Sep 7 2020, 08:42 PM
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I'm the new proud owner of Tom's old track car (914/6 2.4) and I'm getting ready to club race it (SWMS in ABQ NM) and I have a strong gas smell in my garage with it in there and trying to run it down. I know the fuel cell bladder was well inspected and got new foam last year and is using 2 older (pre-2013?) Mallory electric fuel pumps (pics below). I've read the smell can come from them and I'm looking at rebuilding them but cannot tell which model they are and asking if a member recognizes which they are?Attached Image Attached Image
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914 Ranch
post Oct 6 2020, 08:02 AM
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That completely cured mine. My tank vents my fuel in the tank dry and I don't smell anything. Before I installed the off switch I went looking for a leak every where, I found a couple of places that were wet and fixed them but when everything was dry I still smelled fuel. I kept sniffing around the tank but it was not the source. It was the carbs so I installed the switch. The fuel lineholds a miniscule amount of fuel and tightening up the connections stopped the wet spots. Now I smell gear oil like 90 weight. But it doesn't bother me. My fuel tank is made for a drag boat and is conical at the bottom. With a very large vent at the top. It seems to breathe fuel cause it's always dry.

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BadToTheBown
post Oct 6 2020, 07:42 PM
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QUOTE(914 Ranch @ Oct 6 2020, 08:02 AM) *

That completely cured mine. My tank vents my fuel in the tank dry and I don't smell anything. Before I installed the off switch I went looking for a leak every where, I found a couple of places that were wet and fixed them but when everything was dry I still smelled fuel. I kept sniffing around the tank but it was not the source. It was the carbs so I installed the switch. The fuel lineholds a miniscule amount of fuel and tightening up the connections stopped the wet spots. Now I smell gear oil like 90 weight. But it doesn't bother me. My fuel tank is made for a drag boat and is conical at the bottom. With a very large vent at the top. It seems to breathe fuel cause it's always dry.

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It's better, not cured. I've also read it can be the fuel pumps (membrane in them) but cannot see any clear evidence of that. Their race Mallorys...
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Charles Freeborn
post Oct 22 2020, 09:29 AM
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Mine runs a Holley. I'll snap a pic when I'm in the garage next.
When you have a minute could you post a pic from further back of the bracing in your front trunk? Mine has had the bulkhead wall cut out too but no reinforcement. That's a project for this winter on mine. Thx.
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BadToTheBown
post Oct 22 2020, 07:38 PM
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QUOTE(Charles Freeborn @ Oct 22 2020, 09:29 AM) *

Mine runs a Holley. I'll snap a pic when I'm in the garage next.
When you have a minute could you post a pic from further back of the bracing in your front trunk? Mine has had the bulkhead wall cut out too but no reinforcement. That's a project for this winter on mine. Thx.

As requested...


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