<VV> High Idle

[Mark Durham]

David, its your choice on whether you do them or Grant. I bought the shafts
and installed them myself, but also bought the shaft seal kit. It puts
spring pressure on a o-ring that stops the air leaks. I believe somewhere in
Clarks it says the shafts wear before the carb housings, however with
everything getting very old, you would have to check your housings. It
depends on how deep your pocketbook is, I guess! Mark Durham

On Thu, Dec 3, 2009 at 1:55 PM, David Heath <dheath at vanceandhines.com>wrote:

> I have a 65 Coupe, 140/4.  I have the Otto carb rotator kit with 4 primary
> carburetors.  My problem is that the idle speed is always about 900-1100
> rpm
> once warm.  I suspect I have worn throttle shafts.  Two of the carbs are
> premium re-built from Clarks and two are just some primaries I had sitting
> around.  The re-built carbs are about 15 years old, but the car was in
> storage for many years, so they probably only have about 5000 miles on
> them.
> The other day I was playing with carb synchronizing and getting the idle
> down and noticed that I could hear a whistle change pitch when I moved one
> of the shafts from side to side.  This tells me that carb (one of the two I
> had just sitting around) has a worn shaft.  I tried the others, but did not
> notice the same phenomenon.  I do notice that all four shafts appear to
> wiggle in their bores, but I have not taken any apart or even off the
> engine
> for closer inspection.
> I am tempted to just order four shafts and replace them all, but I notice
> that Clark's has a standard size shaft and a 0.030" oversize shaft.  Anyone
> have recommendations on which to get?  Should I just send the lot to Wolf
> for rebuilding?
>
> Dave Heath
> Cypress, CA
> 65 Coupe 140/4
>
>
>
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