The Ford Barn - Fuel pump pushrod

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Ol' Ron

06-03-2010 06:27 PM

Fuel pump pushrod

How much travel does the fuelpunp push rod have?

36 coupe

06-03-2010 06:48 PM

Re: Fuel pump pushrod

About 3/10 of an inch.Never found one with excess wear.

51 MERC-CT

06-03-2010 07:20 PM

Re: Fuel pump pushrod

Measured a used 8BA cam (on V-blocks with dial indicator)
The pushrod lobe has .178" of travel.:D

1oldtimer

06-03-2010 08:23 PM

Re: Fuel pump pushrod

i have a tool to measure it, i'll look for it.

jdl	06-03-2010 09:27 PM

Re: Fuel pump pushrod

It is,,, .185 minimum .200 maximum Ford specs. This is for 8BA, there are ways around this of course, use a longer or shorter pushrod, use a thinner or thicker gasket under the fuel pump mount.

James

06-03-2010 10:07 PM

Re: Fuel pump pushrod

Don't you think the travel of the rod is entirely dependant on the lift of the cam lobe? Changing the relative difference between the top of the rod and the fuel pump lever relates to the degree of interaction between the rod and the lever.

51 MERC-CT

06-04-2010 05:53 AM

Re: Fuel pump pushrod

(

Quote:

Originally Posted by james (Post 21688)

don't you think the travel of the rod is entirely dependant on the lift of the cam lobe? Changing the relative difference between the top of the rod and the fuel pump lever relates to the degree of interaction between the rod and the lever.

right on :) ( jdl - take note )

jdl	06-04-2010 06:50 AM

Re: Fuel pump pushrod

Quote:

Originally Posted by 51 MERC-CT (Post 21773)

(

right on :) ( jdl - take note )

.185 to .200 is the lift of the pushrod. if your cam ecentric is worn down you will have less lift, therefore your fuel pump lever may not acuate enough to properly pump gas. if you add lenghth to the push rod with say a washer, now your pump may work. this is done quite often. you can acomplish the same goal by lowering the fuel pump mount. Most flathead guys know this trick already. Geez!!
p.s I am not as dumb as I look...jdl

The correct lift is .185 to .200

flathead4rd

06-04-2010 08:06 AM

Re: Fuel pump pushrod

WOW! Is this site turning into the HAMB all ready?

Ol' Ron

06-04-2010 08:22 AM

Re: Fuel pump pushrod

Thanks guys, didn't mean to cause any trouble.

jdl	06-04-2010 08:28 AM

Re: Fuel pump pushrod

Hey Ron, no problem here, I am very easy to get along with, I have a great deal of respect for the Fordbarn guys, I value your advice and years of knowledge, I enjoy reading you posts, keep up the good work.
jdl

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