55 f100 239

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tommyleea

Senior Member
Anyone know a source for the fuel pump eccentric counterweight or spacer? I don't have either one. Or, could I just get a washer the correct thickness, and file a slot for the keyway? A simple repair on the surface has turned out to be a nightmare. Thanks
 
Are they same as the 256-312 version part?
I've seen one recently on epay but it included the eccentric & bolt and the price was high.
Is there an engine/machine shop near you that may have a dusty leftover one on the back of a shelf?
 

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if you plan on using the washer as the eccentric it probably will not work.not knowing your skill level it is called eccentric for a reason if not right pump may not work at least.as dmsfr said above might search the bay.an old time machine shop may have one laying around from the day long shot.50 years ago probably could have gone to your local wreckers pulled one off.pretty sure they were same on all y blocks.the pic that was posted above sure looks like the pieces you need
 
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IIRC... the counterweight was used for a couple years and discontinued in favor of a keyed round spacer/washer the same thickness.

--- EDIT ---
I took this spacer out to swap in the decorated counterweight (previous photo) in my 292.
The ID measures a hair over 1 inch, the OD is 1 & 7/16, and the thickness is 1/8th, near as I can tell.
The notch for the key is 3/16 x 1/16.

tommyleea
If you want this one you can have it, just private message me your address.
 

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.if you dont find one close ill mail you one as long as your in no rush as it will take a good week to reach you.ill mail the washer one as i can slip it into an envelope.
 
darrell said:
.if you dont find one close ill mail you one as long as your in no rush as it will take a good week to reach you.ill mail the washer one as i can slip it into an envelope.
Click to expand...


How cool is that? Canadian Ford guys are awesome!
 
Thanks for all the generosity. Getting the washer from Dennis (dmsfrr), and thanks also to darrell for the offer. Cheers
 
do you want both or just the front one.also there is a thick washer that holds everything in place at the front.do you have it.ill get it in the mail as soon as you answer.
 
darrell said:
do you want both or just the front one.also there is a thick washer that holds everything in place at the front.do you have it.ill get it in the mail as soon as you answer.
Click to expand...

Thanks Darrell..I have the thick bolt washer. I need the one with the keyway. Thanks again.
 
it pays to read these posts more closely.i got lost along the way.dmsfrr is sending you the keyed one which goes in back the front one is not keyed.ill send that one to you in the morning if you still want it.
 
darrell said:
it pays to read these posts more closely.i got lost along the way.dmsfrr is sending you the keyed one which goes in back the front one is not keyed.ill send that one to you in the morning if you still want it.
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I know it is getting confusing. I don't have any keyed spacers. There should be one on each side of the fuel pump eccentric. If you could send me your keyed spacer that will work. Thanks...
 
the front one is not keyed its a spacer about.290 thick.do you have that piece.you just put it over the end of the cam its larger than the cam and you keep it centered while you tighten the bolt with the washer.maybe someone can put a picture of the whole thing on here.do you happen to have a shop manuel
 
darrell said:
the front one is not keyed its a spacer about.290 thick.do you have that piece.you just put it over the end of the cam its larger than the cam and you keep it centered while you tighten the bolt with the washer.maybe someone can put a picture of the whole thing on here.do you happen to have a shop manuel
Click to expand...

I need 6290 and 6291. The current spacer I have in front of the eccentric hits the woodruff key, so I guess the inner diameter isn't big enough. I thought it should be keyed.

Maybe with the back spacer installed, the woodruff key isn't protruding at the front, so the spacer wouldn't have to be keyed?
 
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