The Ford Barn

Ol' Ron · 06-03-2010, 06:27 PM

How much travel does the fuelpunp push rod have?

36 coupe · 06-03-2010, 06:48 PM

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

51 MERC-CT · 06-03-2010, 07:20 PM

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

1oldtimer · 06-03-2010, 08:23 PM

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

jdl · 06-03-2010, 09:27 PM

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

Sponsored Links (Register now to hide all advertisements)

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

(

Quote:

Originally Posted by james

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

Quote:

Originally Posted by 51 MERC-CT

(

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

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

Ol' Ron · 06-04-2010, 08:22 AM

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

jdl · 06-04-2010, 08:28 AM

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

06-03-2010, 06:27 PM	#1
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Fuel pump pushrod How much travel does the fuelpunp push rod have?

06-03-2010, 06:48 PM	#2
36 coupe Banned Join Date: Jun 2010 Posts: 35	Re: Fuel pump pushrod About 3/10 of an inch.Never found one with excess wear.

06-03-2010, 07:20 PM	#3
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: Fuel pump pushrod Measured a used 8BA cam (on V-blocks with dial indicator) The pushrod lobe has .178" of travel.

06-03-2010, 08:23 PM	#4
1oldtimer Senior Member Join Date: May 2010 Location: South Orange County, Ca. Posts: 700	Re: Fuel pump pushrod i have a tool to measure it, i'll look for it.

06-03-2010, 09:27 PM	#5
jdl Senior Member Join Date: May 2010 Location: California Central Coast Posts: 931	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.

06-03-2010, 10:07 PM	#6
James Junior Member Join Date: May 2010 Location: Massachusetts Posts: 14	Re: Fuel pump pushrod Sponsored Links (Register now to hide all advertisements) 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.

06-04-2010, 08:06 AM	#9
flathead4rd Senior Member Join Date: May 2010 Location: Michigan Posts: 583	Re: Fuel pump pushrod WOW! Is this site turning into the HAMB all ready?

06-04-2010, 08:22 AM	#10
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: Fuel pump pushrod Thanks guys, didn't mean to cause any trouble.

06-04-2010, 08:28 AM	#11
jdl Senior Member Join Date: May 2010 Location: California Central Coast Posts: 931	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