Home › Forum › Ask A Member › Thor twin carb question
- This topic has 10 replies, 4 voices, and was last updated 2 years, 10 months ago by opposedtwin.
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February 19, 2022 at 10:22 pm #255003
On this Thor twin poppet valve carb I can’t see how to remove the pin from the cork float. No tiny spring clips like on many models but there is a wire (see photos) running through the cork. Maybe it twists around the bottom of the float pin? Don’t want to manhandle anything and cause damage.
Anybody been here before?
Any advice welcome! And thank-you!
Scott
- This topic was modified 2 years, 10 months ago by opposedtwin.
- This topic was modified 2 years, 10 months ago by opposedtwin.
- This topic was modified 2 years, 10 months ago by opposedtwin.
February 20, 2022 at 8:51 am #255020It looks like someone made a float pin out of a 12d nail,
and put a loop of bailing wire through the cork, and perhaps
twisted the cork so the wire wrapped around the float pin.
Just a guess, but I’d did it out by any means possible and
start over fresh. I’d be surprised if that’s an original setup!Prepare to be boarded!
1 user thanked author for this post.
February 20, 2022 at 10:08 am #255024Thanks Buc! I think we’re on the right track with that. I believe it’s a nail too. The function of the pin is to rise with the cork float as fuel enters the bottom of the bowl and seal it to prevent flooding, correct? I wonder if this homeade pin is doing the job. I guess I’ll find out arter I get it cleaned and rebuilt.
I have not seen this mixing valve/float chamber set up before. This one is from the late 30s. Are there other models that combine the mixing valve with a float bowl like this one?
Scott
February 20, 2022 at 10:49 am #255030
There is no way that was working. Its
often a challenge to get the right parts to
seal good enough so the curb doesn’t run
over. With luck the seat isn’t damaged.
PM me your address and I’ll send you a
float pin and a couple clips to position
the cork you can try.
This Pal Carb has the mixing valve and
the float bowl compiled. Many others.
Tubs- This reply was modified 2 years, 10 months ago by The Boat House.
1 user thanked author for this post.
February 20, 2022 at 10:55 am #255031Requires special Thor factory tools for removal/replacement. Very hard to come by.
February 20, 2022 at 11:08 am #255034Requires special Thor factory tools for removal/replacement. Very hard to come by.
Ha ha! Probably made of low grade steel with no bearings and rust in less than 3 days after exposure to moisture of any kind.
Good old Thorwald Hansen! 🤣
February 20, 2022 at 11:15 am #255035
There is no way that was working. Its
often a challenge to get the right parts to
seal good enough so the curb doesn’t run
over. With luck the seat isn’t damaged.
PM me your address and I’ll send you a
float pin and a couple clips to position
the cork you can try.
This Pal Carb has the mixing valve and
the float bowl compiled. Many others.
Tubs- This reply was modified 2 years, 10 months ago by The Boat House.
Great picture Tubs. I may have a spare gloat pin in my parts stash. What motor is the pin from that you had in mind?
And I agree. The PO flattened the nail and drilled a hole to route the wire. Pretty ingenious but that’s probably why the motor got parked.
February 20, 2022 at 11:32 am #255039
Not sure. One from a dozen spares I have.
The angle seems to be the same on all of them
although they came from different mixers.
That wasn’t working. Why it is in there?
Getting these to seal good enough with
the right parts is hard enough. I gave
up on the carb that came on this motor.
Got another and still spent 2 days getting
that replacement to the point it is acceptable.
TubsFebruary 20, 2022 at 12:10 pm #255040Here is a picture of the seat. Please let me know your thoughts. Looks normal to my untrained eye.
Another concern is the packing nut for the adjustment needle. It looks like the seat in the carb body would require a tapered packing nut. The nut I have is not tapered however. Do you think it is supposed to be?
February 21, 2022 at 9:17 am #255069
Seat looks OK in your picture. When you get
the needle spin it in the seat with some tooth
paste keeping it aligned as it is when the float
bowl cover is on. If you want to try a polish rub
some between your fingers to be sure there isn’t
any grit. No mail today. I’ll get it out tomorrow..
Packing nut looks OK to me. It looks to have
the same taper inside as the carb body. Tightening
will push the packing around the shaft of the needle.
Tubs
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