The main purpose of the throttle switch (besides being fun to use) is that
when correctly set it won't allow the overdrive to disengage and shock the
entire power train down into the non overdrive ratio (and possibly cause
harm) if the throttle is closed. In other words correctly set it requires
the slight increase in throttle to raise the engine speed to meet the
disengagement of the overdrive and effect a smooth downshift.
It cost time and money to install every one on the cars when new. If the
engineers didn't think it was necessary, they wouldn't have installed it.
Rich Chrysler
----- Original Message -----
From: "Alan Seigrist" <healey.nut@gmail.com>
To: "Healey" <Healeys@autox.team.net>
Sent: Tuesday, July 15, 2008 8:42 AM
Subject: [Healeys] Question for Shop Owners / Restorers Only - OD
ThrottleSwitch
> Hi Guys -
>
> I've gotten into a bit of an unsolicited pissing match with a British car
> mechanic off list and I'd like to get your opinion. He contacted me, I
> don't know anything about him.
>
> He has a client on this list who is relatively new to Healeys and his
> client
> has quizzed him about the non-functioning OD throttle switch on his Healey
> after reading this list.
>
> Without getting into the whole business of who said what to whom, these
> are
> the opinions:
>
> - Me - In my opinion, I counseled the mechanic that he should fix the OD
> throttle switch because it's relatively cheap and easy to fix, and adds
> to
> the total driving experience of a Healey. I figure if the new Healey
> owner
> doesn't know that much about Healeys, he would probably want the switch
> working if he knew what it did. Plus I just think its easy enough to
> fix
> and makes the car more fun to drive.
>
>
> - The Mechanic in Question - In his opinion he feels that the OD
> throttle
> switch is "troublesome" and wasn't put on Triumphs or Jags that use the
> same
> OD. He figures if they didn't put this switch on a Jaguar, it's
> pointless
> to try to get the switch to work on a Healey and it's better to just
> bypass
> the OD throttle switch altogether and avoid the whole thing - switch on
> and
> switch off is good enough.
>
> What say all of you professional mechanics & restoreres out there? Am I
> right or is he right?
>
> Alan
>
> '52 A90
> '53 BN1
> '64 BJ8
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