keith w Posted November 22, 2016 Report Share Posted November 22, 2016 Do any Grinnall owners have any photos of their fuel pump mountings please. I have a universal type which came off the car, I didn't take a pre-strip down picture unfortunately and I can't work out what the bracketry should be like. The pump was mounted under the car close to the tank. Many thanks for the help. Quote Link to post Share on other sites
Wayne Scott Posted November 22, 2016 Report Share Posted November 22, 2016 Hi Keith, mine has a facet red top mounted under the tank. The mountings look the same as yours in the photo , but the pump is different. Quite simply a universal facet mounting kit nut and bolted through holes the rear bulkhead is how it fixes. You have to remove the rear trim panel to get at the nuts from inside the car. Hope that helps. Quote Link to post Share on other sites
Alec Pringle Posted November 22, 2016 Report Share Posted November 22, 2016 Hi Keith, like Wayne, I've used a Red Top mounted low on the rear bulkhead, and pressure regulated by an underbonnet Malpassi Filter King mounted on the n/s inner wing. Most fuel system items and sundries I've purchased from Glencoe over the past quite a few years, for V8 and for 5 and 6 pot applications . . . . . probably not the cheapest, but the service has been excellent, and I've always been happy with what I've paid for ! Efficient, helpful and knowledgeable is worth a lot in my book. Cheers Alec Quote Link to post Share on other sites
keith w Posted November 23, 2016 Author Report Share Posted November 23, 2016 Thanks gents for these replies. I suspected I would need to drill some holes to suit. So be it. Interesting that you put in a pressure regulator Alec. I thought the pump stopped pumping when there was sufficient pressure but my knowledge is poor. Could you please say more? This is feeding a Holley carb on an edelbrock manifold. The car is coming along quite well at the moment while I have more time on my hands. I will do something with some decent photos for TRAction shortly. I realised I bought the Grinnall as a basket case in 2007! Quote Link to post Share on other sites
Alec Pringle Posted November 23, 2016 Report Share Posted November 23, 2016 Hi Keith, the Facet pumps burble away on tickover regardless . . . . https://www.merlinmotorsport.co.uk/knowledge_base_articles/view/facet-fuel-pumps-for-vehicles-running-carburettors-282 The Malpassi allows you to wind back the delivery to the carb to an appropriate level, best established on a rolling road and you'll need the larger of the two Filter Kings, 85mm, with the facility for pressure gauge . . . . https://www.merlinmotorsport.co.uk/s/fuel-system/carburettor-filters-regulators The Holley is a bucket with holes at the best of times, too much pressure and the fuel consumption sky rockets . . . . . Believe me, been there, learned the hard way !! Cheers Alec Quote Link to post Share on other sites
keith w Posted November 23, 2016 Author Report Share Posted November 23, 2016 Thanks again Alec and Wayne. I will order a Facet in that case. The blue thing doesn't carry a brand name and it's probably not very serviceable. Do you have any recommendation for hose size? Quote Link to post Share on other sites
Alec Pringle Posted November 23, 2016 Report Share Posted November 23, 2016 Hi Keith, 8mm unions on both the Facet pumps and Filter Kings, so that determines your size - and a pre-filter on the pump inlet will reduce wear as long as you change it periodically ! I should have mentioned that previously, as in my experience the combination of pre-filter changed every couple of years, and the Filter King properly adjusted on the rollers initially and then cleaned every 6 months . . . . . and the system just works once it's been set-up. Every 'problem' Facet pump I've seen has suffered from either a lack of pre-filter, and/or undersize pipe/hose, and/or filter regulator. Over winter you need a fuel conditioner to prevent water absorption followed by water separating and dropping to the bottom of the tank - from which you cannot remove it without removing the tank. Been there, made that mistake ! Cheers Alec Quote Link to post Share on other sites
acaie Posted November 23, 2016 Report Share Posted November 23, 2016 Hi all I have a facet red pump underneath and put in a Sytec Flo-Pro Fuel Pressure Regulator Carburettor 1-5psi under the bonnet because I judged this would suit my SU carburettors. Noting Alec's comments I will have a look underneath to see what I have in the way of a fliter and hope to do a photo. Over winter I try hard to take it out once a week for a good run to avoid problems such as condensation and corrosion, and use a dehumidifier in the garage to keep the RH to 60% or so. With a bt of luck I will avoid the problem Alec describes. Best wishes Al Quote Link to post Share on other sites
Andrew Gough Posted December 1, 2016 Report Share Posted December 1, 2016 My Grinnal TR7v8 has a facet pump mounted under the rear floor behind the driver. If you use a facet competition silver top pump they run slightly less pressure than a red top and you won't need a pressure regulator. The pump that you have looks like an after market su type pump Quote Link to post Share on other sites
Alec Pringle Posted December 1, 2016 Report Share Posted December 1, 2016 The spring within the traditional cylindrical pump can in any case be one of three options to suit potential pressure requirement . . . . . However that doesn't always suit a wide range of performance, especially given the smaller inlet/outlet of the silver top pump compared to the red top - the silver may not be capable of fuelling at full chat, as I found out the hard way. Red Top and Malpassi and pre-pump filter achieves, in my experience, a bombproof reliable system that works properly - or as well as any Holley-fuelled system ever will, given performance over economy !! Cheers Alec Quote Link to post Share on other sites
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