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Boogered pilot jet removal help

Frank Z.

Frank Z.

Forum Mentor
Past Site Supporter
Bought a bank of used BS34 CVs last year and finally got around to stripping 'em down for cleaning; gonna install Dynojet kit. Would be an understatement to say that these carbs have seen better days, as all float needles are frozen, split in one of the diaphragms, etc. :mad:

Biggest hurdle though is 3-outta-4 pilot jets are literally cemented in their orifices. Driver slots are non-existant. Tried heat (LOTS of heat), lubricants, more heat, muscle, swearing, the usual. So, what would the pros do? EZ out... left handed drill bit... or toss 'em?

Thanks in advance.
 
Only thing I can think of past them bottle of propane we wasted Frank, is to drill them out and step up each size till just the thinnest sleeeve around the thread area exists...hopefully not getting to the threads on the carb body itself.

Then reach in with something and see if you can get them to fall out. I have never failed to get one out with lots of propane torch heat before...BUT those 3 you have are beyond me as to why they wont budge!!!
 
I vote left handed drill bit.
Start with a small one and work your way up.
 
Someone once posted about something used to flash freeze stuck bolts..cant remember the brand name of the stuff they mentioned. Maybe freeze them with some automotive AC refrigerant then some heat and the refreeze again..cyclic cracking of the old fuel or whatever is up there jamming them in??? At this point about anything is worth a try!!!
 
Tank..I got them so hot with the torch that black tar looking crap was bubbling up thru the center holes.

AND then we soaked with oil and heated them some more..boiling them literally with the towers full of oil and still they refrused to move.

There is something that really has them stuck and i dont think left handed bits are gonna do it myself.
 
I had success using small ez outs on a few of them. Just have to make sure to not use too much torque, just wiggle it, use heat and penetrating oil too. A small drill to open them up to fit the ez out.
 
gearhead13 said:
I had success using small ez outs on a few of them. Just have to make sure to not use too much torque, just wiggle it, use heat and penetrating oil too. A small drill to open them up to fit the ez out.
Click to expand...
+1 for ez out. I had success using this method. As gearhead says, go gentle and wiggle.
 
Pilot Jet Removal

Pilot Jet Removal

I had the same problem with mine and this was one solution:

See: My Gs1100 G Blog - Pilot Jet Shananigans

P1050627a.jpg


I drilled a small hole and jammed in a torque headed screwdriver tip which then got it out:

P1050666.jpg


This was another pesky screw:

My GS1100 Blog - Carb Breakdown part 4

P1050750.jpg


Be very careful you do not overdrill !!

Greetings
 
chuck hahn said:
Someone once posted about something used to flash freeze stuck bolts..cant remember the brand name of the stuff they mentioned. Maybe freeze them with some automotive AC refrigerant then some heat and the refreeze again..cyclic cracking of the old fuel or whatever is up there jamming them in??? At this point about anything is worth a try!!!
Click to expand...

freeze your nuts off.....

http://www.thegsresources.com/_forum/showthread.php?t=190754

.
 
Thanks, folks. Some good ideas here.
I'll give 'er a go with a couple suggestions and report back soon.
 
+1 on drilling out slightly and pounding in a torx screwdriver. they really BITE when pounded in where they shouldn't go!!! just stay small cause if you go too large it might swell the pilot out making it even harder to extract!!!
 
chuck hahn said:
Only thing I can think of past them bottle of propane we wasted Frank, is to drill them out and step up each size till just the thinnest sleeeve around the thread area exists...hopefully not getting to the threads on the carb body itself.

Then reach in with something and see if you can get them to fall out. I have never failed to get one out with lots of propane torch heat before...BUT those 3 you have are beyond me as to why they wont budge!!!
Click to expand...

This is the only thing you can do at this point. I just did this yesterday with a petcock bolt broken off flush at the bottom. Would not respond to an easy out. It came out fine.
 
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