The Ford Barn

Tinker · 07-31-2011, 11:17 AM

Hey Guys. I know I've voiced a few times, as others have, about a little frustration with mechanical fuel pumps. I pulled apart a bad one that was working well for about a 1yr. There was no flow at all. Everything looked fine except the valves.

The one on the left is the intake valve of the pump. The one on the right is the output valve which would have fuel sitting on it when not running. As you can see the material of the valve completely melted. Both were hard and brittle.

I have been using 10% ethanol fuel. But am switching to non-ethanol. I would like to run the 10%. It's more convenient and less expensive. Are they making tuneup kit that are made for ethanol?

Tinker · 07-31-2011, 12:01 PM

Sorry, excuse my ignorance. I went online and I notice that macs and a few others sell pumps that are rated 10% ethanol.

The last ones I had were from yrs ago. I haven't looked in a while and didn't know they changed it. Macs website was the first I've seen advertised as 10% ethanol friendly.

ford38v8 · 07-31-2011, 12:50 PM

Tinker, Alcohol fuel has been destroying our fuel systems for long enough now that you can get fuel friendly parts at most vendors. Just confirm. Then also, some places specialize, like Antique Auto Parts Cellar:
http://www.maritimedragracing.com/th...automotive.htm

ken ct · 07-31-2011, 01:19 PM

It happens when the disc inside is rubber coated.you have to find the old style of valves which have no rubber coating on them. I have a few left but not selling them separately from a pump rebuild.I have no source for them.They usta come in kits many yrs ago and im running out of them after 100's of rebuilds ive done. ken ct. sorry.

Tinker · 07-31-2011, 02:52 PM

That's no problem Ken. Your advice and knowledge is always appreciated.

ken ct · 08-01-2011, 03:13 AM

Sponsored Links (Register now to hide all advertisements)

You will find the correct valves in very old FP repair kits,i mean from the 40's and 50's. ther always encased in a little brass housing [not alum] and the disc in side is kind of a brown color. I havent run across any of these kits in yrs.Last lot of them i bought was in hershey guy had about 30 kits and i purchesed all of them.Last ive seen of them.Some times i find 1 kit but that dosen't do me much good.ken ct.

Mart · 08-01-2011, 04:50 AM

Not that it helps particularly, but the old ones may have used a material called Tufnol.

Mart.

ken ct · 08-01-2011, 06:42 AM

No its a phonic like material like a brown fiber board used in radio insulation. I still have plenty of the discs themselfs which go in the 32 to early 36 pumps but no way to use in pumps after early 36 which were encapsulated in a little brass houseing with a small spring. ken ct. [spelling may be phonolic ?] dont know

Mart · 08-01-2011, 07:10 AM

That sounds like the same stuff, Ken, Tufnol may be a UK company producing the same stuff. I checked their website, it certainly sounds like one of their products.
I was saying it in case it might be possible to source the material to produce alcohol resistant valves.

Mart.

ken ct · 08-01-2011, 12:06 PM

The later valves after 36 were in a crimped together brass housing. NO way to replace the disc without ruining the housing. ken ct.

07-31-2011, 12:01 PM	#2
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: Fuel Pump Valve Sorry, excuse my ignorance. I went online and I notice that macs and a few others sell pumps that are rated 10% ethanol. The last ones I had were from yrs ago. I haven't looked in a while and didn't know they changed it. Macs website was the first I've seen advertised as 10% ethanol friendly. Last edited by Tinker; 07-31-2011 at 12:41 PM.

07-31-2011, 12:50 PM	#3
ford38v8 Senior Member Join Date: Jul 2011 Location: SF Bay Area Posts: 6,645	Re: Fuel Pump Valve Tinker, Alcohol fuel has been destroying our fuel systems for long enough now that you can get fuel friendly parts at most vendors. Just confirm. Then also, some places specialize, like Antique Auto Parts Cellar: http://www.maritimedragracing.com/th...automotive.htm __________________ Alan

07-31-2011, 01:19 PM	#4
ken ct BANNED Join Date: May 2010 Location: stratford,ct Posts: 5,971	Re: Fuel Pump Valve It happens when the disc inside is rubber coated.you have to find the old style of valves which have no rubber coating on them. I have a few left but not selling them separately from a pump rebuild.I have no source for them.They usta come in kits many yrs ago and im running out of them after 100's of rebuilds ive done. ken ct. sorry.

07-31-2011, 02:52 PM	#5
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: Fuel Pump Valve That's no problem Ken. Your advice and knowledge is always appreciated.

08-01-2011, 03:13 AM	#6
ken ct BANNED Join Date: May 2010 Location: stratford,ct Posts: 5,971	Re: Fuel Pump Valve Sponsored Links (Register now to hide all advertisements) You will find the correct valves in very old FP repair kits,i mean from the 40's and 50's. ther always encased in a little brass housing [not alum] and the disc in side is kind of a brown color. I havent run across any of these kits in yrs.Last lot of them i bought was in hershey guy had about 30 kits and i purchesed all of them.Last ive seen of them.Some times i find 1 kit but that dosen't do me much good.ken ct.

08-01-2011, 04:50 AM	#7
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,754	Re: Fuel Pump Valve Not that it helps particularly, but the old ones may have used a material called Tufnol. Mart.

08-01-2011, 06:42 AM	#8
ken ct BANNED Join Date: May 2010 Location: stratford,ct Posts: 5,971	Re: Fuel Pump Valve No its a phonic like material like a brown fiber board used in radio insulation. I still have plenty of the discs themselfs which go in the 32 to early 36 pumps but no way to use in pumps after early 36 which were encapsulated in a little brass houseing with a small spring. ken ct. [spelling may be phonolic ?] dont know

08-01-2011, 07:10 AM	#9
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,754	Re: Fuel Pump Valve That sounds like the same stuff, Ken, Tufnol may be a UK company producing the same stuff. I checked their website, it certainly sounds like one of their products. I was saying it in case it might be possible to source the material to produce alcohol resistant valves. Mart.

08-01-2011, 12:06 PM	#10
ken ct BANNED Join Date: May 2010 Location: stratford,ct Posts: 5,971	Re: Fuel Pump Valve The later valves after 36 were in a crimped together brass housing. NO way to replace the disc without ruining the housing. ken ct.