Quadrajet Problem Solving > Quadrajet Parts and Numbers

q-jet base plate interchangeability

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429bbf:
ethan i see bts casting no. is 7043308 do you know if they used the same casting no. with different modification to fit different carbs ?i guess my question would be . if my 17041262 has the same casting no. would it work? thanks

beertracker:

--- Quote from: 429bbf on March 06, 2015, 07:10:37 PM ---bt is it ruined or would it be good if i guy got the screw out. i would be willing to try take it out free of charge if you send it to me . fwiw

--- End quote ---

Hi 429bbf:

That's a great idea.  I will PM you a photo of the damaged section with a write up in a couple of days.   Then we can decide if it's fixable.  :)

One of the idle mix screws broke off even with the base plate.  It was rusted in bad.  I tried kroil penetrating oil and later a propane torch but no luck.  Next I tried drilling the mix screw out and even took a tiny dremel cutting bit to it.   I got some of the screw out but the threads are damaged; the drill slipped.   It will require back fill material (aluminum or JB marine epoxy?) and a re-tap of threads.   I don't know if aluminum can be welded?

 thanks, bt

beertracker:
429bbf:

Thanks for the offer and here are the idle screw hole photos.   I don't think the photos turned out very good but I did my best.  Look them over and let me know what you think.   The pointed idle mix screw tip is protrucing into the barrel so my drill stopped just in time.

429bbf:
doesn't look like its going to do you any good the way it looks (sometimes you have to laugh ) send it to me and ill see what i can do . as long as your not in a big hurry. it may take me a week or two.

(

beertracker:
429bff:

Just got back from working on the base plate and now it is broken.   I should have left well enough alone. Another hard lesson learned about q-jets; keep them away from dremel cutters.  No way to fix it now.   Thanks any way.   I am going to have to get a replacement base plate.

bt :)

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