Re: [TR] Carburetors

[David P <frogeye@porterscustom.com> (ame7.swcp.com [216.184.2.128]); Tue, 03 Oct 2023 15:07:34 -0600 (MDT) SPF_PASS version=3.4.6]

Take a close look at the choke fast idle cam being fully off and that 
the chokes themselves are working properly... must be removed to check.. 
DaveP

On 9/28/2023 6:57 PM, Frank Burkhart wrote:
> Hope this email is appropriate to send.  Iâ??m hoping that someone out in 
> Triumph world can provide some clarification on carburetors.  Currently, 
> Zenith Stromberg carbs on my 1975 TR6.  The car has been running poorly since 
> Trimphest (too many RPMs?).  And then it died completely but turned out to 
> need a new rotor.  Asked the mechanic, Mike, to take a look at the everything 
> to figure out what can be made better.  What he found was the carbs were 
> dumping gas into the cylinders especially when starting, to the point the gas 
> was washing down the cylinder walls preventing the rings from sealing.  
> Result was a lot of white smoke.
>
> The carbs were rebuilt about 18 months ago by Apple Hydraulics in New York.  
> Supposedly all new parts including a new piston in one of the carbs.  
> Mechanic Mike is questioning the quality but . . .  Several paths to try:
>
> 1.  New needles and basic over haul.  Least expensive but maybe stopgap 
> measure.
>
> 2.  Rebuild these carbs using a different shop.  Mike recommends a shop in 
> Colorado. Iâ??m would worry about a 2nd rebuild in short period of time.
>
> 3.  Replace the carbs.
> 3a.  Mike has a pair of SU carbs in good shape.  Mike would replace 
> â??consumablesâ?? and install
>
> 3b.  Find a pair Stromberg carbs
>
> 3c.  Mike likes carbs by Mikuni
>
> 3c.  Replace with Webers
>
> Any ideas / suggestions on what path seems the best?
>
> Hope all the world is going well for all.  Hope to see everyone at Velocity.
>
>
> Thank you,
> Frank Burkhart
>
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