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bvolks
Samba Member
Joined: April 26, 2004
Posts: 846
Location: New Brunswick, Canada
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 Posted: Sun Nov 01, 2020 1:59 pm Post subject: Loose fuel pump flange |
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How tightly should a new fuel pump flange fit into the case? Someone I know broke theirs off and they think the new one they bought is too loose in the case. It is a 1600 in a 1974 Super Beetle. I have never ran across that problem, so I thought I would ask on here. I see the earlier ones are different. I wonder if they might have got one of those instead of one for a 1600?
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1985 Diesel Jetta Coupe (temporarily retired at
756,000 km)
1971 Doublecab project
1995 Golf CL
1974 Beetle
1978 Westfalia |
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bnam
Samba Member
Joined: July 02, 2006
Posts: 2936
Location: El Dorado Hills CA/ Bangalore, India
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| Posted: Mon Nov 02, 2020 9:59 am Post subject: Re: Loose fuel pump flange |
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Perhaps a repro one? They should be sanded done if tight for a smooth fit.
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1971 1302LS Convertible (RHD) owned since '74
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1966 Fiat 1500 Cabrio (with 1600 Twin cam)
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Michael Ambrozik
Samba Member
Joined: October 17, 2020
Posts: 631
Location: San Jose, CA
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| Posted: Mon Nov 02, 2020 5:04 pm Post subject: Re: Loose fuel pump flange |
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| the one at Cip1 is the correct one and fits in a 1200-1600 case. They are not a tight fit. |
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kreemoweet
Samba Member
Joined: March 13, 2008
Posts: 3900
Location: Seattle, WA
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| Posted: Mon Nov 02, 2020 6:55 pm Post subject: Re: Loose fuel pump flange |
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The flange was the same 1961-1974. Aftermarket flanges are
typically a little smaller than the original VW ones, but can also be
a bit larger. It also might be the hole in the case that is bored too
large. I have a Genuine VW (Brazil) case where the pump flange hole in the case is so badly done that no flange, original VW or aftermarket, will sit flat on the top of the case.
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modok
Samba Member
Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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| Posted: Mon Nov 02, 2020 8:43 pm Post subject: Re: Loose fuel pump flange |
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I ran into that too.
Not only was it loose in the case, also the hole for the rod was far larger than it should be. I don't have any idea what they were thinking.
My conclusion was go with a used one, and use a slightly larger pump rod and call it good as new. |
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bvolks
Samba Member
Joined: April 26, 2004
Posts: 846
Location: New Brunswick, Canada
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| Posted: Sat Nov 14, 2020 5:34 pm Post subject: Re: Loose fuel pump flange |
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I was just speaking to them again and they said there is a significant gap around the flange at the bottom hole. The problem they're having is that they were having a fuel delivery problem and when he pulled the pump, the new flange was broken and the top of it came out with the pump and the bottom of the flange was left sitting loosely in the hole. They bought a different one that was supposed to be "OEM" but it fits the same as the other one. He is going to measure the bottom hole and see if it's too big. The one on the motor I have apart was around 14-15mm. This is a motor they just built and hasn't even left the garage.
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1985 Diesel Jetta Coupe (temporarily retired at
756,000 km)
1971 Doublecab project
1995 Golf CL
1974 Beetle
1978 Westfalia |
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