[TR] TR6 Stromberg question

[Bud R]

I solved the too high fuel pressure on ZS carbs with a fuel pressure regulator. Even a cheap one will work but don’t depend on the markings on the regulator. You need to hook up a vacuum gage to set it to about 1 1/2 to 2 psi. At least that’s what my TR6 ZS carbs liked best.

Bud Rolofson

Extreme Parts Racing (more than just a haircut)

71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
69 Spitfire MK III (back up FE engine/dinghy car)
93 Minnie Winnie Race Support Vehicle 
77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)












On Mar 12, 2016, at 8:14 AM, Wbeech at flash.net <wbeech at flash.net> wrote:

> Ditto Dave.   
> Just had that same problem with a recent non-TR acquisition.   PO had installed the higher pressure pump and the car instantly flooded as soon as it was turned off.  Much fiddling and head scratching before I replaced the fuel pump with a 2-3psi Facet and problem was solved. 
> 
> Sent from my VIC-64
> 
> On Mar 12, 2016, at 8:31 AM, Creig Houghtaling <creig555 at live.com> wrote:
> 
> Mechanical pump.
> 
> 
> From: Dave <dave1massey at cs.com>
> Sent: Wednesday, March 9, 2016 6:52 AM
> To: creig555 at live.com; triumphs at autox.team.net
> Subject: Re: [TR] TR6 Stromberg question
>  
> Is he running an electric fuel pump?  If so is it a 2 - 3 PSI unit or the higher, more common 5 - 7 PSI pump?  the higher pressure may be overcoming the float valves.
> 
> 
> Dave Massey
> 
> 
> 
> -----Original Message-----
> From: Creig Houghtaling <creig555 at live.com>
> To: Triumph List <triumphs at autox.team.net>
> Sent: Tue, Mar 8, 2016 5:24 pm
> Subject: [TR] TR6 Stromberg question
> 
> My friend's TR6 was running poorly. After the car had been running, and was turned off, I noticed drips of gasoline dropping from the port below the forward carb just in front of the intake manifold. I concluded the Gross jet was not stopping the flow of gas to the carb and gas was getting pushed into the engine. So I replaced both float valves with standard valves and also changed both floats. After putting everything back together, I ran the car for a few minutes and turned it off. It was dripping gas out the same port. Looked in the throat from the air filter side and saw a small puddle of gas in the lower area right in front of the venturi. As far as I know, that means the gas isn't shutting off. Perhaps I didn't adjust the float correctly. Or there is something at the fuel inlet orifice allowing gas to bypass the valve. Is there anything I am missing here? Could the enrichment valve  (choke) be the culprit? I haven't touched that yet. I adjusted the new float to fully close the valve when the mold line of the float was parallel with the horizontal edge of the carb where the fuel reservoir attaches.
> 
> Am I missing anything else here? 
> 
> Thanks 
> Creig Houghtaling
> 
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