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MG TD TF 1500 - Shut off valve??
|I have a question on a picture of TD ebay item 120583626213 ,,, The item in question is seen in the picture of the carb side of the engine,,, what is the valve located near the fuel filter ??,,, It almost looks like there is a vent on top of it. Seeing that the filter is wrapped in foam,(for insulation??) might this valve be some ones idea of a "far fetched" method of venting for vapor lock???? Right near the hot exhaust manifold??|
I tried to blow up the picture, but can't...
|I think it is a metal fuel filter plumbed into the line, wrapped in foam to prevent scratching the nice, shiny paint. It could be some sort of insulating feature, but it's pretty limited. I think the 'vent' you see is a hose clamp.|
Sometimes the simplest explanation is the best!
|Look a bit closer, and you will see what looks like a brass valve handle,,, right in line with the choke bracket on the rear carb,,,,|
|I don't think thats foam on the top, it looks more like a rubber plug/cap pushed on a fuel nipple. It almost looks like it is on a seperate fuel line so it could be that someone has ran duel lines in the past and used two fuel pumpls like on the TD/C.|
|Sorry, Steve; I now see of what you speak. Since it has 1-1/2" SU's I assume that it had an added fuel line, as a go-fast item, like the TD/C cars. Whole lot o'fittings going on there...|
|...speaking of big carbs and pumps... do the twin 1 1/2's 'have' to have the second pump, or would the stock one feed the two?|
|TF's and A's had twin 1-1/2 " carbs with one pump, but the two on the Mk II TDs look cool!|
|Gordon: my opinion is that it all depends on your driving. Extended highway or high speed driving could certainly benefit from a second fuel line and pump, as the last thing you want is the carbs to starve for fuel. But for more varied driving I suspect a single pump and line are more than adequate. Just consider how many TD's were raced and driven hard, with a single fuel pump!|
TD/C 10564, TD 22966
|Don't know about the valve, but the filter on the inlet side of the pump is a good way to damage a SU fuel pump. If the filter becomes clogged to the point where it will not allow any fuel through it, the pump will stall in a current on condition, resulting with the internal swamping resistor (inside the coil housing) to burn out, removing the only arc suppression that the early L type pump have. This ends up with points that burn prematurely, including any replacement points that are used. Cheers - Dave|
This thread was discussed on 18/06/2010
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