Peter is correct ... What I should have said is that if anyone has tried to
adjust their idle with the linkage loose/off, the carbs will almost
certainly have lost their synchronization.
Plus, like most aspects of these cars, they will mysteriously lose
sychronization (or any other adjustment) for no apparent reason ...
-Graham
-----Original Message-----
From: Peter Macholdt [mailto:vze2846b@verizon.net]
Sent: Friday, April 25, 2003 12:57 PM
To: 6pack list
Subject: Re: How to sync/tune dual Strombergs?
Graham,
Carb synchronization is done with the linkage loosened. Just removing the
linkage will not change the synchronization. That is changed by adjusting
the screws on the throttle stops.
Peter
'68 TR250
on 4/25/03 12:15 PM, Vink, Graham at vinkg@fleishman.com wrote:
> The following link contains detailed instructions from VTR. IMHO, the
> Uni-Syn tool (available from usual Brit car suppliers) is
> indispensable. And yes, if you've had the throttle interconnect
> linkage off, it's almost certain that the carbs aren't synchronized.
>
> Another thing to check is the carburetor diaphragms, especially if
> they're old - if one or both have holes or tears you won't get much
> power. Replacements are cheap.
>
> Graham
>
> http://www.vtr.org/maintain/carbs.html
>
> -----Original Message-----
> From: Kronberg, Peter [mailto:Peter.Kronberg@hp.com]
> Sent: Friday, April 25, 2003 11:23 AM
> To: 6pack@autox.team.net
> Subject: How to sync/tune dual Strombergs?
>
>
> Hey Everyone,
> Well, I got my '76 fired up for the first time yesterday. Mind you,
> I've installed a Pertronix Ignitor and had both carbs removed to
> replace float bowl plug O-rings. I have to say, she idles fairly well.
> However, under load...no power. The acceleration response
> is..."sputtery". Now, as I've mentioned in earlier messages, I think
> my dizzy may have rotated on me slightly, so I'll be checking ignition
> timing next. 4deg ATDC, right? Bentley mentions a micro-adjustment nut
> for minor timing tweaks, but I can't seem to find it in any exploded
> parts diagram. So...I guess I'll be resorting to loosening of the
> clamp, and rotating the housing/shaft. Which direction of dizzy
> rotation will change timing closer/away from TDC? Do my symptoms
> suggest that this is likely to be enough of a factor, or should I then
> move on to carb syncing/tuning? Here's where things get sticky... I am
> looking for a cookbook set of procedures for syncing my carbs. I've
> had the throttle interconnect linkage off, and I suspect that I need
> to synchronize them, at least. I never messed with the dashpots,
> diaphragms, needle valves, etc so I'm hoping I don't need to mess with
> mixture.
>
> The frustrating thing is, there is TONS of info on rebuilding carbs,
> but sketchy info on syncing / tuning. I checked the archives, but got
> no hits.
>
> Please advise, and thanx in advance from the bottom of my sump.
>
> Pete
> '76 CF51563U (TRYin' to mo'tate...)
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