Can anyone indentify this broken jet

[pjv911]

I just purchased a 69 T today and the carbs were less than perfect so I took them off and opened them up for a good cleaning. I was blowing with compressed air and the head of this jet blew off. I need to know what its called and if there are different one`s so I get the correct one. These are the original 40mm webers from the 69` T . Look at the pics below to see were it goes and what it looks like. Thanks

Kurt Williams

[jabb]

That is a main jet...... If you look closely you might see a number stamped on it to determine the size if it is not to corroded.....

That jet looks very Nasty............

[Bobboloo]

In 69' I think the carbs for the T were IDTP3C. The main jet on those in stock form is 110.

To make sure though just unscrew one of the other ones and compare. The jet slides into the bottom of the bolt and the number can be read on it's surface.

just rebuilt a set of those a couple months back. It's an easy job.

In looking at your picture the jet is in the part of the broken screw with the threads. Just look at the bottom opposite the broken part.

Judging from that screw I would get a rebuild kit. Before you order though you should completely dissassemble to see if you need any other parts. The throttles however may not have to be dissassembled. Clean them real good first and see if they'll move freely. Also if they have any wobble in them they will have to be machined and have oversize shafts installed.

The best thing for cleaning them is B-12 Chemtool. I first learned about it from Warren Hill. The stuff is far superior to carb cleaner for cleaning. I got a big pot with a lid large enough to fit one carb in and filled it with 2 cans of B-12. A toothbrush. Another can for rinse.

You must do this however outdoors with a respirator and rubber gloves. The lid is to cover the pot when ever your not working. This stuff evaporates quickly and can't be good for the enviroment. Save the cans to pour it back when your done. Also get yourself a large syringe. You can use it to sqirt B-12 through the tubes.

Good Luck
Bobby

[jkeyzer]

I think that is B-9. The stuff with the yellow goo floating on top to keep it from evaporating, right?

It is very effective. And even the sealed can makes the garage stink.

[T Bird]

pjv911
The part that broke is referred to as a main jet carrier. You can get that part from PMO. It does not come as part of a rebuild kit. People often overtorque those carriers, causing them to break. That is what I would expect happened in your case.

Good luck.

[john walker's workshop]

you're damn lucky the threaded part came out. they often are seized, and the effort to remove them can ruin the carb. that black stuff on the jet doesn't dissolve easily with off the shelf carb cleaners. (dead gas residue). i would assume the rest of the carb suffers from it too. a professional cleaning at a carb shop is the best bet.