fuel pump eccentric
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Senior User
Joined: Oct 2006
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fuel pump eccentric
As much as I have been spouting off on this forum in the last couple of days, I have yet to make my y-block go. One of the first things I discovered when starting to ressurect it was that it wasn't getting any fuel. The fuel pump is indeed bad, but that's not what's bothering me. As soon as I got it out, I spotted this welded "build up" right on the end of the arm where it rides the cam - about 1/4" maybe. I can't figure out what would make someone do that - unless they thought they had a bad or wrong arm or something. But the arm matches the new one exactly so I still don't get it. I reached in to feel the eccentric and sure enough something felt loose, so I pulled the timing cover. Yes it was loose, due to too long of a bolt I think, but as it is keyed it should still have been operating properly.
Anyway I have a new pump to go in but I'm still kinda wondering what is going on here. Any theories?
Also how tight should that bolt be when I reassemble? Locktite?
Thanks in advance for any insights.
Andrew
Anyway I have a new pump to go in but I'm still kinda wondering what is going on here. Any theories?
Also how tight should that bolt be when I reassemble? Locktite?
Thanks in advance for any insights.
Andrew
More Turbo
Joined: Nov 2003
Posts: 682
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From: Peoria, IL (more or less)
Which Y are you working on?? And, what's the block casting number? As you may have seen in other posts, 239s have some pump issues. 
The sprocket gets torqued to 35-45 ft. lb. Loctite is fine; I'd use 242 as opposed to 271. Make sure everything is spanking clean if you use Loctite.
I have seen crap welded on the pump arm as a Mickey Mouse solution to a number of problems.
The sprocket gets torqued to 35-45 ft. lb. Loctite is fine; I'd use 242 as opposed to 271. Make sure everything is spanking clean if you use Loctite.
I have seen crap welded on the pump arm as a Mickey Mouse solution to a number of problems.
Senior User
Joined: Jan 2002
Posts: 453
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From: australia
fuel pump
Hi all i went thr 3 fuel pumps in 5years so i just put a holley (red) 7psi pump bettween the tank to push it to the carb and plated the old hole up its works great plus i put a holley 600 4bl on to 
