[6pack] Moss SU Upgrade for TR6

[Alex]

Hi Bob,
When these were first put on, gas flowed heavily from these tubes. The 
original owner needed to install a pressure regulator between the mechanical 
fuel pump and the carbs. The pump was putting out 6 lbs of pressure and the 
carbs required 1-1.5 lbs forcing gas out of these tubes. They appear to work 
find now, but safety is a key issue as they did come close to leaking on the 
exhaust manifold. Just does not seem right.

I like the carbon canister venting, except hers was removed. My TR3 tubes 
are vented back into the air intake filter where it is consumed back through 
the carb opening.

Alex
----- Original Message ----- 
From: "Bob" <yellowtr at adelphia.net>
To: <6pack at autox.team.net>
Sent: Sunday, May 23, 2010 5:49 PM
Subject: Re: [6pack] Moss SU Upgrade for TR6


> On Sunday, May 23, 2010 05:25:45 pm Alex wrote:
>> Hello all,
>> A friend of mine just bought a 1970 TR6 that has the Moss SU upgrade. 
>> There
>> are two brass tubes (one ea carb) coming what appears to be out of the 
>> fuel
>> bowls. They are open to the air with nothing attached.
>>
>> I was told they are over flow tubes and nothing needs to be attached. If
>> you put your fingers over the opening of each tube, the car will stall
>> out. It appears that they have a unction. If this is the case, I can only
>> assume that at the very least there should be some kind of filter
>> mechanism.
>>
>> Is anyone familiar with the Moss SU upgrade and what these tubes are for
>> and how they should be set up?
>>
>> Side note - the car idles at about 1100, has a Pertonix coil and 
>> electronic
>> ignition.
>>
>> Thanks,
>> Alex Manzo
>> 72 TR6
>> 59 TR3A
> Alex,
>
> Funny thing, I just received a set of Hitachi SU carbs from Paltech  for 
> my 72
> TR6 project and Jeff describes those tubes as float overflow similar to 
> what you
> describe. I plan to connect them with tubing and a "Y" and route them to 
> the
> carbon canister gas tank vent tube. But it that causes a problem I will 
> just
> route the tube to air somewhere safe away from the manifolds.
>
> Those tubes are not on my HS6s I use on my 63 TR4. There is an overflow 
> but if
> there is a float problem gas just comes out of the top of the float.
>
> Bob
> _______________________________________________