Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 08-19-2013, 06:09 AM   #1
SUHRsc
Senior Member
 
SUHRsc's Avatar
 
Join Date: May 2010
Location: near Hershey, PA
Posts: 799
Default V8 fuel pump as an air pump? - Racecar

I was talking with an old racer over the weekend. He mentioned when he started racing flatheads he would use a hand pressure pump to initially prime his fuel system to get to the carb. Then from that point on, he had the stock fuel pump working as an air pump to pressurize the gas tank (sealed).

I was wondering if anyone had ever done this.

Any thoughts?

Thanks
Zach
__________________
-WANTED-
Pre-War flathead speed equipment
81AS - 81SB or 99AS cylinder heads


Last edited by SUHRsc; 08-19-2013 at 06:18 AM.
SUHRsc is offline   Reply With Quote
Old 08-19-2013, 06:22 AM   #2
Walt Dupont--Me.
Senior Member
 
Walt Dupont--Me.'s Avatar
 
Join Date: May 2010
Location: Gardiner Me.
Posts: 4,200
Default Re: V8 fuel pump as an air pump? - Racecar

Never heard of it but sounds reasonable. Seems 5# of air ought to pump some fuel. Walt
Walt Dupont--Me. is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-19-2013, 08:03 AM   #3
Charlie ny
Senior Member
 
Join Date: May 2010
Posts: 2,300
Default Re: V8 fuel pump as an air pump? - Racecar

Zack,
A while back in stash of fp's I found a ,shall we say one sided pump,....just
the outlet....I wondered what it could be.....now I know. I'll bring it to Hershey. We'll
stop at your place and drop it off on our way. I'll never use it .
Charlie ny
Charlie ny is offline   Reply With Quote
Old 08-19-2013, 08:07 AM   #4
SUHRsc
Senior Member
 
SUHRsc's Avatar
 
Join Date: May 2010
Location: near Hershey, PA
Posts: 799
Default Re: V8 fuel pump as an air pump? - Racecar

Charlie, that sounds great!

Anxious to meet you anyways!

thanks!
Zach
__________________
-WANTED-
Pre-War flathead speed equipment
81AS - 81SB or 99AS cylinder heads

SUHRsc is offline   Reply With Quote
Old 08-19-2013, 08:35 AM   #5
Mart
Senior Member
 
Mart's Avatar
 
Join Date: May 2010
Location: Solihull, England.
Posts: 5,753
Default Re: V8 fuel pump as an air pump? - Racecar

There's a guy over here in the UK that ran a flathead dragster back in the day. Ken Cooper. I witnessed him prime the tank and then allow it to continue to run with the mech pump pressurising the tank. We have those neat units with the mechanical primer. That's what he used. This would have been in the mid 80's but the car was built a long time before that.

Mart.
Mart is online now   Reply With Quote
Old 08-19-2013, 12:02 PM   #6
Bruce Lancaster
Senior Member
 
Join Date: May 2010
Location: Madison, NJ
Posts: 5,230
Default Re: V8 fuel pump as an air pump? - Racecar

This use of the pump as a pressure source is mentioned in some of the earlier manuals... I think the two circa 1952 Speed books, Roger Huntington's and California Bill's flathead speed manuals, mention this, and there is also a bit in the circa 1959 Spotlite booklets on fuel systems on this practice. It would make a lot of sense in a circle track car. I have heard plenty of yarns about people losing races because they got carried away driving and forgot to keep after the hand pump!
I like those British pumps with the hand levers...wish I had one!
Bruce Lancaster is offline   Reply With Quote
Old 08-19-2013, 03:46 PM   #7
FlatheadTed
Senior Member
 
FlatheadTed's Avatar
 
Join Date: May 2010
Location: Auckland
Posts: 4,046
Send a message via AIM to FlatheadTed
Default Re: V8 fuel pump as an air pump? - Racecar

It was a common thing down here in speedway .
__________________
http://www.flatheadted.com
FlatheadTed is offline   Reply With Quote
Old 08-19-2013, 04:56 PM   #8
G.M.
Senior Member
 
Join Date: May 2010
Location: Florida and Penna.
Posts: 4,185
Default Re: V8 fuel pump as an air pump? - Racecar

About 25 years ago I got a 1900 steam car running for an Austrian friend. It hadn't been running for 30 or 40 years. It had a round brass gas tank about 14 inches in diameter 24 inches long with about 1-1/4" real fine threaded cap with about 1 1/4 inches of threads. Gas was put in the tank and it had an air valve for air and a hand pump. I didn't like. It was a pain to get fired up and dangerous. It had another tank the same size for water. I converted it to propane and he was happy. He took it to Austria and sold it to someone in Germany a few years later. G.M.
__________________
www.fordcollector.com
G.M. is offline   Reply With Quote
Old 08-19-2013, 05:31 PM   #9
Enbloc
Senior Member
 
Enbloc's Avatar
 
Join Date: May 2010
Location: London, UK.
Posts: 195
Default Re: V8 fuel pump as an air pump? - Racecar

Bruce is right as always.

It shows this very set-up in the Bill Fisher Speed Manual.

Enbloc is offline   Reply With Quote
Old 08-20-2013, 10:12 AM   #10
Bruce Lancaster
Senior Member
 
Join Date: May 2010
Location: Madison, NJ
Posts: 5,230
Default Re: V8 fuel pump as an air pump? - Racecar

How's my old friend Lunkenheimer doing over there?
Bruce Lancaster is offline   Reply With Quote
Old 08-20-2013, 11:17 AM   #11
Dale Fairfax
Senior Member
 
Join Date: May 2010
Location: Indianapolis
Posts: 250
Default Re: V8 fuel pump as an air pump? - Racecar

Same kind of sources: "old racers" have told me the same thing. It makes sense since the pump isn't working under the same handicap that Ford designed; namely having to pull/lift the fuel via suction. Hand pump enough pressure into the tank to get you going and let the fuel pump maintain. After all it doesn't take too much pressure to satisfy a pair of 94s.
Dale Fairfax is offline   Reply With Quote
Old 08-20-2013, 11:25 AM   #12
Ross F-1
Senior Member
 
Ross F-1's Avatar
 
Join Date: Nov 2010
Location: NM
Posts: 2,207
Default Re: V8 fuel pump as an air pump? - Racecar

You'd find out quickly if your tank had any pinholes!
__________________
'52 F-1, EAB flathead
Ross F-1 is offline   Reply With Quote
Old 08-20-2013, 09:07 PM   #13
Bluebell
Senior Member
 
Join Date: Nov 2012
Location: Tauranga, New Zealand
Posts: 720
Default Re: V8 fuel pump as an air pump? - Racecar

Probably the fitted a heavier spring under the diaphragm, to up the delivery pressure.
Bluebell is offline   Reply With Quote
Old 08-26-2013, 06:36 PM   #14
hotrodA
Senior Member
 
hotrodA's Avatar
 
Join Date: May 2010
Location: Rogersville, TN
Posts: 677
Default Re: V8 fuel pump as an air pump? - Racecar

Zach,
A friend of mine did just that on a banger powered vintage sprint car that was actually raced.
The hand pump was non-functioning. PM me if you would like his name and phone number.
hotrodA is offline   Reply With Quote
Old 08-26-2013, 08:06 PM   #15
Henry/Kokomo
Senior Member
 
Henry/Kokomo's Avatar
 
Join Date: May 2010
Location: Kokomo, Indiana
Posts: 1,731
Default Re: V8 fuel pump as an air pump? - Racecar

When I was growing up, a neighbor's older brother ran sprint cars using the hand pump and the stock fuel pump as an air pump. It seemed to work very well. I don't recall fuel delivery ever being an issue.
__________________
Henry
Henry/Kokomo is offline   Reply With Quote
Old 09-10-2013, 09:50 PM   #16
SUHRsc
Senior Member
 
SUHRsc's Avatar
 
Join Date: May 2010
Location: near Hershey, PA
Posts: 799
Default Re: V8 fuel pump as an air pump? - Racecar

Quote:
Originally Posted by Charlie ny View Post
Zack,
A while back in stash of fp's I found a ,shall we say one sided pump,....just
the outlet....I wondered what it could be.....now I know. I'll bring it to Hershey. We'll
stop at your place and drop it off on our way. I'll never use it .
Charlie ny
And here she is, in all her glory!
Thank you Charlie!!!

Any guesses as to the original use?
Seems it'll be perfect for my racecar project!


__________________
-WANTED-
Pre-War flathead speed equipment
81AS - 81SB or 99AS cylinder heads

SUHRsc is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 01:39 PM.