Tilly cut in half

[mrtexas]

Too many mosquitoes outside today to do much real work on the 29 roadster so I restored a Tilly inside instead. I restore Tilly Model Xs and decided to cut some in half to make sure I'm cleaning out all the small passages.

The top half shows the welch plug and the two small holes that go to the throttle passage. This circuit is the idle adjustment. Air goes thru the two small holes. At the bottom of the passage below throttle there is also a small brass plug with a hole that goes to the air space of the fuel bowel. The barely visible hole in the bottom middle of the vertical passage is where the idle air adjustment screw is inserted into.

Here is another view of the idle circuit. Note the top most hole is covered by the welch plug:

The bottom half shows the small main jet in the fuel bowl and the main nozzle. The horizontal passage near the bottom of the main nozzle is plugged off with a lead plug. News to me was the end of the vertical passage has a hole to the main nozzle passage.

This close up shows the hole below the main nozzle where the gas from the GAV comes from.

Here is the GAV circuit:

 

[wi0v]

Neat mosquitoe day project.

 

[Wick]

Thanks for the info,I love Tillys. Now take the screwdriver slot on the nozzle and line it up with the passage way to the fuel bowl. Just something we did with carbs years ago.
Wick

 

[48Ratfink]

Does this cut Your gas milage in Half also?

 

[Peter J]

Mr. Texas, that's great. I have a Tilly that I was going to tear into but didn't exacially know where all the little holes went and why,
Thanks!
Pete

 

[josh1331]

Thank you, I have two tilly's and now will make sure that the hole is clear below main nozzle. /Josh

 

[Modelakid31]

Thanks for sharing the pictures and info with us. will come in handy when redoing a carb. Now if only someone did this to a zenith

 

[Wick]

In the Middle picture,the passageway comming from the top of the carb right down the middle....some gaskets on the market for the carb bowl allmost block off this passageway.

A fishing split shot (lead)will plug the bowl hole after you clean it out.
WIck

 

[Russell in Tulsa]

Can these photos be put in a folder of repair procedures for easy access?

 

[modela@aol.com]

thanks for sharing the pictures and info with us. Will come in handy when redoing a carb. Now if only someone did this to a zenith

This Zenith was displayed at the 2007 MARC Membership Meet in Joliet, IL.

 

[Peter J]

Ditto Russell. I sort of copied the pics. by doing an Alt. Print screen. I didn't print it out but it seemed to copy the page pretty well.

 

[mrtexas]

I added 2 more pictures