Has anyone ever tried to fill (braze) a worn throttle shaft. The shaft appears to be br*** or bronze. I understand new shafts are available.
New shafts are readily available. They even tell you what drill size to use. Pretty easy to install.. I did all 3 of mine.
For what the new oversize shafts cost, it wouldn't be worth trying to fill and remachine the old shafts.
A long, long, long time ago I fixed one by re-bushing the throttle body. It was very time consuming, it worked pretty well but I wouldn't bother with that method again. The new shafts are a far superior way to go, and actually pretty cheap.
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD vAlign=top colSpan=2>http://www.speedwaymotors.com/p/712...ndquot;94andquot;-Ext-Throttle.html?itemNo=94 That is the link below is the details, 15.99 each. I just instlled one of two is was really simple took 10 minutes including installing new throttle plates. Comes with replacement screws asa well. <!--googleon:snippet--></TD></TR><TR><TD vAlign=top>"About the only way your 97 or 94 could have a tight throttle shaft would be if you found a NOS carb somewhere. Now you can build yourself a dual or triple carb set-up that will run like new. We offer you these new extended throttle shafts that are .282" which is .005" oversize. You simply run a 9/32" drill bit or reamer through the base plate and you now have a tight carb again."<TABLE cl***=Text_Small id=dlDisplayGroup__ctl0_rblBases border=0><TBODY></TBODY></TABLE> </TD></TR></TBODY></TABLE>
Life used to be simpler, especially if you were a Ford dealer... Service Bulletin subject 9510, Carburetor Reconditioning, Ford Carb...Nov 25, 1940. Make a visual inspection of tightness of fit of throttle plates...by holding towards a light...snug fit required...check if throttle shaft is worn loose...or...or...complete ***embly should be discarded!!" If your dealer is out...drilling and reaming is next. Unlike the Stromberg, there aren't any bushings for easy rebuild. If you are able to drill and ream the ***embly properly, stop and think about the shaft...very small increase/decrease of shaft size actually has a remarkable amount of effect on flow, far more than I would have believed without seeing tests by an airflow engineer! Get bushings and a new STANDARD shaft, not really any extra work. You are already making the holes bigger, just go up another size and stick bushings in the holes. There are places that sell bushings just for carb rebuilding, but just check a dimensional chart in an industrial supply catalog. Straightness is crucial, or plates will never close right. Ford actually did not consider throttle parts on 94's interchangeable parts...apparently there was an element of select fit to get perfect fit. My fleamarket experience is that most of the carb sellers consider a core a core, and don't notice or charge more for the survivors with good shafts!
Drilling an reaming is going to involve fixturing and very careful location! If you just shove a hand drill in there nothing is ever going to fit again.
I just replaced the shafts in my 94's. I used the .003 oversize shafts (ebay - eelco - $10 per - I know they are not liked but I bought them before my last post on 94's and the recommendation to use the guy on the ford barn for parts!). I havnt tried to fire it up yet to see if it worked, but all the shafts slipped in snug and the play has gone. I did not try any reaming or drilling - I think I would have more chance of destroying them than fixing them if I did! I still have the option of going the .005 oversized shafts, if I still have leaks, but if any reaming is needed I would get them done professionally. I just got everything back on the car so I will try and get the time to fire up the engine and report back. ricki
How do you attach the accelerater plate (with the three holes) to the end of the new shaft kits? where do you get replacement "links" the little flat bar that supposed to pry out of the accelerator pump rod--but always snaps in half on the little interference fit post that fits into the hole?
S****metalman: You must remove the "accelerator plate" from the old shaft buy filing or grinding off the swedged end. The new oversized shafts come with a small screw and the end of the new shaft is already tapped. Put a drop of loc***e on the screw prior to final ***emby. You can buy any part you need one part at a time if you wish from Vintage Speed (google it) in Vero Beach Fla. The first page on the website is very long. Scroll to the bottom and click on the parts catalog and select "Holly 94 parts". There are several lengths of accelerator links. A lot of people complaign about Vintage Speed. I have ordered stuff from his web site and paid with a credit card. Never spoke to a human and never had a problem. Good luck.
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