[TR] fast idle problem

Dave Connitt dconnitt at fuse.net
Tue May 12 17:09:54 MDT 2020


Bob, you might contact Joe Curto? He rebushed and fitted new throttle shafts in my SU’s several years ago and it was less than $300.00. Plus he has done it before (grin)
Dave Connitt 

Sent from my iPhone

> On May 12, 2020, at 6:27 PM, Bob Leaver <boleaver at gmail.com> wrote:
> 
> I have a 1965 Triumph TR4a that I rebuilt the SU carbs and now I can't
> get the idle below about 1500. I've tried all the screws and checked
> all gaskets and nothing. The only possibility I can come up with is
> air getting around the shafts. When rebuilding the cars I didn't
> replace the shafts because I didn't have a reamer. Moss has a reamer
> for $290.00. I looked on line and can't find a less expensive
> replacement. The book states the size of the reamer is 5/16" +
> 0.0105". What kind of measurement is this? Can you use a 5/16" reamer?
> Does anyone have ideas how I can get the idle down? Does anyone know
> of a cheaper reamer to use? Thanks, Bob
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