Source for gear shift knob threaded insert/reducer
 

In this age of Google, I can't believe I'm having such trouble finding a two way threaded insert to put a glass knob on an emergency brake extension.

I need one that is 5/8" 18 pitch OD and 5/16" 24 pitch ID. I've tried so many search word combos, but all that comes up are metric pieces.

Does anyone have a source for these?

Thanks,

Tim

Re: Source for gear shift knob threaded insert/reducer
 

Why don't you take a 5/8"x18 bolt and slice off a piece and drill and tap it for 5/16"x24?

Re: Source for gear shift knob threaded insert/reducer
 

I guess I could do that. Never thought to do it that way, but that's for the suggestion.

Re: Source for gear shift knob threaded insert/reducer
 

Tim,speeddawg.com or speed dawg shift knobs. iv'e recently replaced the original brown v8 ebossed shift knob in my '37 fordor cause the original knob way to small for my hand and dont car for shape of it either. imo the price was right i believe all the choices have a same size insert and you specify which insert you need.also geta washer which i did not use and a jam nut. Tom.

Re: Source for gear shift knob threaded insert/reducer
 

Tim,speedawg.com or speedawg shift knobs.all knobs come with a common threaded insert permanately installed and you coose the adapter size you need i too chose the 5/16"x24 for my '37. orig brown v8 embossed was way to small for my hand and didnt care for shape either Tom.

Re: Source for gear shift knob threaded insert/reducer
 

X 2 which is what I did yrs ago.

Re: Source for gear shift knob threaded insert/reducer
 

I've had good luck putting a helicoil in the shift knob also.

Re: Source for gear shift knob threaded insert/reducer
 

Thanks for all the suggestions. Hard to believe this is such a difficult item to source. I seem to recall these were fairly common items.

Re: Source for gear shift knob threaded insert/reducer
 

There on Ebay. Search, brass shift knob insert. Can get six different styles and metric or 5/8.

Re: Source for gear shift knob threaded insert/reducer
 

For some reason the knob peddlers all want to force the use of communist threads!

Re: Source for gear shift knob threaded insert/reducer
 

Hahahaha!

Re: Source for gear shift knob threaded insert/reducer
 

I have gotten this type of insert at Fastenal (sp?). I don't remember the exact dimensions I used buy they had a selection to choose from.

Re: Source for gear shift knob threaded insert/reducer
 

Found one on Ebay. For the $10, it wasn't worth my time to make it at this point. Maybe when I retire I'll make a run of them.

Re: Source for gear shift knob threaded insert/reducer
 

Make them out of titanium, they will shift faster.

Re: Source for gear shift knob threaded insert/reducer
 

Ah, true. But what will it do for my gas mileage?

Re: Source for gear shift knob threaded insert/reducer
 

First part I ever made on a lathe was an insert to put a larger thread shift knob onto a Hurst shifter…..

Re: Source for gear shift knob threaded insert/reducer
 

IIRC, JC Whitney's shift knob bushing increased your mileage by 15%. Not sure if anybody elses's version topped that, but it's unlikely.....

Re: Source for gear shift knob threaded insert/reducer
 

Yep. I bucked up an extra $0.75 for the turbine edition.

Re: Source for gear shift knob threaded insert/reducer
 

Plate it & make it even faster!

Re: Source for gear shift knob threaded insert/reducer
 

Put some grease on the thread of shift leaver,then fill the knob with JB weld and bingo .