reginald Posted May 26, 2015 Report Share Posted May 26, 2015 Hello After a bit of advice, I would like to replace my mechanical pump on my Tr6 running HS6 SU carbs to fast road spec. I have been looking at the Facet Fuel pumps there are two types which both meet my spec cylindrical silver top and solid state cube style pump, there is a big differance in price eg solid state half the price, is there a big differance the way the pumps perform, I will be fitting a regulator and safety cut off switch. Any advice very welcome Richard Quote Link to post Share on other sites
RobH Posted May 27, 2015 Report Share Posted May 27, 2015 I believe the two pumps operate differently Richard, though the result is the same if you get the same flow rate and pressure spec. The 'electronic' cube type runs all the time and is a pusher pump which should be mounted near the tank. The cylindrical type is an interrupter pump, like an old SU pump which only runs when needed when the carb float valve opens and outlet pressure drops. It can be used as a pusher or suction pump so can be mounted in the engine bay. An alternative to these is the Huco which is also an interrupter and suction type for engine-bay mounting. If you get the right low-pressure-rated pump so that the carb float valve can cope, you should not really need a fuel pressure regulator. http://www.fastroadcars.co.uk/shop/index.php?act=viewProd&productId=29 Rob Quote Link to post Share on other sites
John L Posted May 27, 2015 Report Share Posted May 27, 2015 I've just fitted one of these to a friends MGB. http://www.simonbbc.com/fuel-pumps/facet-type-fuel-pump-mini?zenid=306cb5b65bd262335be64bbc844255d8 it will need some rubber cotton reels to mount it, it should be mounted vertically, screw cap at the bottom, its a filter on the inlet. John Quote Link to post Share on other sites
kob666e Posted May 27, 2015 Report Share Posted May 27, 2015 I believe the two pumps operate differently Richard, though the result is the same if you get the same flow rate and pressure spec. The 'electronic' cube type runs all the time and is a pusher pump which should be mounted near the tank. The cylindrical type is an interrupter pump, like an old SU pump which only runs when needed when the carb float valve opens and outlet pressure drops. It can be used as a pusher or suction pump so can be mounted in the engine bay. An alternative to these is the Huco which is also an interrupter and suction type for engine-bay mounting. If you get the right low-pressure-rated pump so that the carb float valve can cope, you should not really need a fuel pressure regulator. http://www.fastroadcars.co.uk/shop/index.php?act=viewProd&productId=29 Rob Fitted a Huco pump and an inertia switch with no regulator on inside front left wing a few years ago, all from Fastroadcars, and it's well able to keep up with the thirst of two webbers on full blast. Can highly recommend it, also easy to fit with minimal routing of pipes or wires. Quote Link to post Share on other sites
rogerguzzi Posted May 27, 2015 Report Share Posted May 27, 2015 +1 and a 5year warranty unless they have changed? been running mine for 4+ years(and they are quite not like a demented woodpecker!!!!) Roger ps and cheaper than SU type Quote Link to post Share on other sites
Robin Powell Posted May 27, 2015 Report Share Posted May 27, 2015 I fitted a Huco to my 4A as Stuart recommended them. The pressure output is designed for SUs so no regulator required. It works a treat. Quote Link to post Share on other sites
reginald Posted May 27, 2015 Author Report Share Posted May 27, 2015 Hi Thanks for the replies ,I think the interruptor style pump is the way to go and a bigger choice to look at, the Huco and facet style pump from Power spark will save me some money to go on other goodies and if I can get away with out a regulator even better. Thanks again Richard Quote Link to post Share on other sites
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