The Ford Barn

Mart · 07-29-2014, 02:00 PM

Do any of the US manufacturers make anything similar the the SU pump used on jags and MGs etc?

I fitted one to my roadster as a priming pump and it works great. It offers no resistance to drawing fuel through by the mech pump and you know when the fuel has filled the carbs because it stops ticking.

Mart.

jkeesey · 07-29-2014, 02:08 PM

Quote:

Originally Posted by Mart

Do any of the US manufacturers make anything similar the the SU pump used on jags and MGs etc?

I fitted one to my roadster as a priming pump and it works great. It offers no resistance to drawing fuel through by the mech pump and you know when the fuel has filled the carbs because it stops ticking.

Mart.

After working on quite a few old brit cars I am trying one of the pumps you described next. My car ONLY has an electric pump so a failure is a big deal to me.

Mart · 07-29-2014, 02:17 PM

If it's been sitting around for a while you might need to clean the contact points.

Mart.

jkeesey · 07-29-2014, 02:40 PM

Been through that before. So far I haven't found new original style pumps available here.

Old Henry · 07-31-2014, 12:01 AM

Quote:

Originally Posted by Lawson Cox

. . . One has to junk up the fuel lines/engine compartment with an add on pressure regulator . . .

The regulator can go in the frame just in front of the electric pump that's as near to the tank as possible and not junk up the engine compartment at all.

Quote:

Originally Posted by Lanny

The Airtex 6 volt # E8902 is 2.5/4 lbs. Is that tooooooo much for ya

.

Quote:

Originally Posted by dwick01

Do you guys use a regulator along with the Airtrex E8902?

The Airtex pump I got rated at that pressure seemed to generally go to the maximum 4 lbs which is probably OK for starting fill of the carb but too much for any prolonged use which I have to do with vapor lock. (Carb float needle is only rated for 3.5 lbs max.) That's why I added the regulator.

Quote:

Originally Posted by Ol' Ron

I think what I'd really like is a good mechanical one.

Quote:

Originally Posted by Bruce Lancaster

I agree, a good quality mechanical would obviate the need for a jumble of extra parts or relegate them to a backup system in parallel...

I don't know of any stock mechanical pump in the stock position that is immune from vapor lock, no matter how good it is. When it's vapor locked it does not pump.

No need for parallel fuel lines with the Airtex that allows the mechanical pump to pull through it when off.

My 2¢

dwick01 · 07-31-2014, 07:15 AM

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Thanks Professor! Makes sense to me. During vapor lock, do you have to run the electric pump for a while after the motor starts? If so, how do you know when to shut it off? Obviously, I'm a novice.

Old Henry · 07-31-2014, 08:20 AM

If the vapor lock is just preventing starting the pump should be able to be turned off as soon as it starts. If you have a regulator it's not so urgent to get it shut off. If not, the engine will start to stumble when the carb bowl overflows and starts flooding the engine or you smell gas flooding into the engine compartment. My vapor lock usually comes while driving and I have to keep the pump on for a while, especially if I'm climbing a mountain. Then it's on all the way up. I have a very small LED indicator light to remind me the pump is on.

dwick01 · 07-31-2014, 08:42 PM

Thank you. I appreciate the information.

07-29-2014, 02:00 PM	#21
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,754	Re: Why don't some of the "High Rollers" mfg a good low pressure fuel pump??? Do any of the US manufacturers make anything similar the the SU pump used on jags and MGs etc? I fitted one to my roadster as a priming pump and it works great. It offers no resistance to drawing fuel through by the mech pump and you know when the fuel has filled the carbs because it stops ticking. Mart.

07-29-2014, 02:17 PM	#23
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,754	Re: Why don't some of the "High Rollers" mfg a good low pressure fuel pump??? If it's been sitting around for a while you might need to clean the contact points. Mart.

07-29-2014, 02:40 PM	#24
jkeesey Senior Member Join Date: Apr 2011 Location: Glenmoore Pa Posts: 1,644	Re: Why don't some of the "High Rollers" mfg a good low pressure fuel pump??? Been through that before. So far I haven't found new original style pumps available here.

07-31-2014, 07:15 AM	#26
dwick01 Senior Member Join Date: May 2013 Location: Wellington, Kansas Posts: 444	Re: Why don't some of the "High Rollers" mfg a good low pressure fuel pump??? Sponsored Links (Register now to hide all advertisements) Thanks Professor! Makes sense to me. During vapor lock, do you have to run the electric pump for a while after the motor starts? If so, how do you know when to shut it off? Obviously, I'm a novice.

07-31-2014, 08:20 AM	#27
Old Henry Senior Member Join Date: Oct 2010 Location: Orem, Utah Posts: 5,762	Re: Why don't some of the "High Rollers" mfg a good low pressure fuel pump??? If the vapor lock is just preventing starting the pump should be able to be turned off as soon as it starts. If you have a regulator it's not so urgent to get it shut off. If not, the engine will start to stumble when the carb bowl overflows and starts flooding the engine or you smell gas flooding into the engine compartment. My vapor lock usually comes while driving and I have to keep the pump on for a while, especially if I'm climbing a mountain. Then it's on all the way up. I have a very small LED indicator light to remind me the pump is on. __________________ Prof. Henry (The Roaming Gnome) "It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness

07-31-2014, 08:42 PM	#28
dwick01 Senior Member Join Date: May 2013 Location: Wellington, Kansas Posts: 444	Re: Why don't some of the "High Rollers" mfg a good low pressure fuel pump??? Thank you. I appreciate the information.