Shortening the gear shift

[Brightonuk]

I purchased on of the Ali gear knobs unfortunately my T9 lever is 1/2" and the thread on the knob is ?? much smaller.

I  tapped the knob out to 1/2" and about 3/4" deep but it still sits too high on the lever and the tap will not go further I do not want to force it and snap the tap, my only option is to shorten the gear lever and re thread it.

But I am not sure how far to cut the lever down, do I go really short (hopefully improving shift speed) or just enough so my knuckles don't hit the dash.

 

Thanks  

[DJ.]

If the gear lever gets too short, the knob can sit too close to the tunnel top and be more awkward to grab. I suggest taking it down 1/2" at a time to be sure

[John Vine]

Was the ali knob one of Caterham's (like this)?  What gearlever do you have -- Sierra or CC-specific?

I've just taken some measurements of my gearlever...

I have the CC 6-sp ali knob on my CC 6-speed box, plus the Quickshift lever.  The knob is about 3" long (and looks identical in size to the CC 5-sp one above), and the base sits about level with the tunnel cover.  The internal part-threaded hole is 2" deep.  The start of the internal thread (3/8" UNC) is recessed about 3/4", and the thread itself is about 7/8" long.

Hope that helps.

JV