[Healeys] Overdrive wiring question

Bob Spidell bspidell at comcast.net
Mon Sep 4 11:14:02 MDT 2017

I'm working from memory--will check the manual later--but the way I 
interpreted the instructions were to adjust the switch with the 
throttles a spec distance--prob. the 3/16" as Steve mentions--opened.  
For some reason, I thought this should be achieved by pressing on the 
accelerator pedal to achieve this setting which, of course, would pull 
up any slack in the Rube Goldberg throttle mechanism.  So, I set it this 
way but felt that it required too much pedal when disengaging the OD.  I 
just fiddled with the adjustment to where the OD disengaged with what I 
felt was appropriate pedal.  Maybe the 3/16" should be measured without 
allowing for linkage slack, maybe not; does anyone know for sure?


On 9/4/2017 5:33 AM, BJ8Healeys wrote:
> Maybe I just got lucky, but I had to set the adjustment on the 
> throttle switch recently when the overdrive began disengaging as soon 
> as the dash switch was turned off.  Being out of beer at the time, I 
> used a test light connected to the throttle switch and inserted a 
> 3/16" (5 mm) drill bit between the throttle stop and lever (as 
> directed by the workshop manual), then adjusted the switch until the 
> light just went out.   That worked perfectly the first time.   I used 
> bad language anyway, just for fun....winking0001.gif
> Steve Byers
> HBJ8L/36666
> BJ8 Registry
> AHCA Delegate at Large
> Havelock, NC
> *From:*Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf Of 
> *Earl Kagna
> *Sent:* Monday, September 04, 2017 1:55 AM
> *To:* Roland Wilhelmy; Healey List
> *Subject:* Re: [Healeys] Overdrive wiring question
> Setting the throttle switch correctly is pretty tricky on a Healey – 
> requires a lot of beer and bad language.
> Earl Kagna
> Victoria, B.C.
> BJ8, BT7 tri-carb

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