All, I am looking for the Tillotson part number for my 66 sportster. I have an HD1C and a HD2D card that I can rebuild. Are either of these correct for 1966?

The harley parts listing calls for a 27162-66. What is the conversion to the Tillotson number?

thank you

 

Good luck on finding the conversion number for a Tillotson.
I have never come across such a cross reference myself.

There are much better choices of carbs to hang on a Sportster instead of a Tillotson. But maybe you want to retain the original carb.

All I can tell you is a 1966 had a Model HD carb. I am not sure about the '1C and 2D' business. Probably not a dime's worth of difference between the two.

I may have a few more bits of information regarding the rebuilding and repair of the Model HD carb, if you need it.
pg

 

Are there still some parts around for these things? I think they were used until 1970 or so.

 

I have an old tillotson HD1A in my parts box. It has the adapter block still mounted on it. Missing the accelorator pump and lever and the idle adjustment screw.. Nice shape will need a rebuild as it's been sitting for years! I will let it go any Offers?? wraplock@aol.com

 

Agree on finding any conversion numbers. I have been told the '1' designates Sporty and the '2' is big twin. I have both and can't tell the diff. I don't have a clue what the C and D stand for either, I have a HD2C on my 68 FLH (the stock carb btw), and a HD2D and a HD1B laying around. I do know all three have diff size main jets.

 

I purchased a NOS in the box Tillitson part number 27162-66c which is listed for all Sportsters '66-'69. There is HD1D 14 stamped on the flange, so I guess that throws a monkey wrench in this whole thing.

 

Hey,
My friend has been tearing the tilly off his 67 fl and working on it for a few weeks now with no success. He got some rebuild parts for it. He also has a second carb. Upon install the bike runs wide open with the throttle butterfly closed. Throttle has no effect on rpms with either carb. I offered to tear them both apart again and look them over for a second set of eyes. I've done carbs before but not these tillotsons. If you have some information or tricks to do I sure would appreciate it. He wants to keep the original carb since the rest of the bike is bone stock. Any help is welcome!

Thanks

 

when I rebuilt my HD1D or 1C (I cannot remember, but I know the one I did not use is sitting on my toolbox and can check it tomorrow- the only difference i have heard of is the size of the main jets)

anyway, when I put my carb back on it also ran wide open and idled crazy high. I adjusted the idle screw all the way in and then all the way out until it fell out. I also adjusted the mid-range screw to no avail

finally I found it was a simple carb cable adjustment as I had not properly set the internal throttle cable length to the carb choke arm adjustment

try that; hope it helps
mine runs great now