Gridgway Posted May 17, 2022 Share Posted May 17, 2022 My crossflow engine builder says I need to use a Facet red top plus a Sytec pro FPR to provide enough fuel for the upgraded motor.Does anyone have this or similar installation that I can use for inspiration please? Where they are placed, the plumbing and the wiring.CheersGraham Link to comment Share on other sites More sharing options...
Tazio Posted May 17, 2022 Share Posted May 17, 2022 My facet is mounted on the rear panel behind the passenger quite low down, the pressure regulator is mounted under the bonnet on the chassis member directly above the gearbox. The power is fed via an additional relay, I've chosen to control the relay via a dash mounted switch. As I was rebuilding the car I ran an earth from the chassis earth point through the tunnel onto a stud, basically so I had a good earth point for all of the rear electrics. Alan Link to comment Share on other sites More sharing options...
Tazio Posted May 17, 2022 Share Posted May 17, 2022 Link to comment Share on other sites More sharing options...
Tazio Posted May 17, 2022 Share Posted May 17, 2022 Link to comment Share on other sites More sharing options...
Jonathan Kay Posted May 17, 2022 Share Posted May 17, 2022 "The power is fed via an additional relay, I've chosen to control the relay via a dash mounted switch."Why the additional switch, please? Something to do with track use or racing regulations?ThanksJonathan Link to comment Share on other sites More sharing options...
Tazio Posted May 17, 2022 Share Posted May 17, 2022 Jonathan,I run my cars with no immobilisers or ignition keys, but I do put some discrete switches in to isolate some services just to make it a little bit more difficult for those tempted to take the cars. Link to comment Share on other sites More sharing options...
Jonathan Kay Posted May 17, 2022 Share Posted May 17, 2022 ThanksJonathan Link to comment Share on other sites More sharing options...
rkeywood Posted May 17, 2022 Share Posted May 17, 2022 My pump is below the boot floor on the passenger side just behind the suspension turret - I've popped and bonded a 4x3" stainless plate there to stop the flex in the ali. The Filter King is below the boot floor as well attached to an ali angle that's used to strengthen the rolled edge of the fixed section of the boot floor. Mine's not run via the ignition switch either but runs through an FIA isolator which adds an element of security (the ignition switch offers no security as you can just pull the connections off the back and hotwire in 10 secs.)R Link to comment Share on other sites More sharing options...
Gridgway Posted May 18, 2022 Author Share Posted May 18, 2022 Thanks both, very interesting.One thing that strikes me is that I have the plastic fuel pipe from the tank to the fuel pump which is ok as it's not under pressure. With a pump at the back to the regulator at the front, that is under pressure, so would need a different fuel pipe.Is that correct logic? Link to comment Share on other sites More sharing options...
OldAndrewE Posted May 18, 2022 Share Posted May 18, 2022 Possibly! I have no idea what the pressure rating of the plastic pipe is. Is it the original pipe? May be worth replacing anyway considering potential problems with E10 fuel. Presumably you are replacing an original mechanical pump Link to comment Share on other sites More sharing options...
Gridgway Posted May 18, 2022 Author Share Posted May 18, 2022 Yes the mechanical pump will be blanked off (or otherwise not used).The plastic pipe is connected to the tank at one end and the mechanical pump at the other end by rubber pipe and jubilee clips. Being plastic, the clips can't be done up very tight as they would be onto metal fittings. But the negative pressure to suck the petrol through will be a much lower magnitude than the positive pressure the facet will produce (6 ish psi). So I anticipate leakage - which I generally don't enjoy and when particularly when it's petrol! Link to comment Share on other sites More sharing options...
Jonathan Kay Posted May 18, 2022 Share Posted May 18, 2022 People who know more than me recommend not using Jubilee-type clamps on fuel lines, eg: https://www.caterhamlotus7.club/forum/techtalk/soit-was-fuel-pumpJonathan Link to comment Share on other sites More sharing options...
OldAndrewE Posted May 18, 2022 Share Posted May 18, 2022 So yes worth replacing even if just for peace of mind. Link to comment Share on other sites More sharing options...
Tazio Posted May 18, 2022 Share Posted May 18, 2022 I replaced the original plastic pipework down the tunnel one with the what I think is copper one, originally fitted to the K series . Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted May 18, 2022 Area Representative Share Posted May 18, 2022 Graham, my installation is as Tazio's. Pump above the rear axle and pressure regulator under the bonnet just by the pedal box. Happy to take photos for additional information. Link to comment Share on other sites More sharing options...
Gridgway Posted May 19, 2022 Author Share Posted May 19, 2022 Thanks, looks like the way to go and I have had the pipe sizes confirmed by the engine builder. Will replace the plastic fuel pipe with copper/nickel. I'm unsure of the electrics (not being my strong suit), so will investigate what I have over the weekend and come back with more questions no doubt! Link to comment Share on other sites More sharing options...
Gridgway Posted May 19, 2022 Author Share Posted May 19, 2022 Just a quick question regarding the replacement fuel pipe (Tazio). Are the ends of the pipe flared in any way for the rubber pipe to connect to at each end or are they just flat pipe as it were? Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted May 19, 2022 Area Representative Share Posted May 19, 2022 A good plan for the fuel lines. There was a point where mine had become like those leaky garden hose pipes! Link to comment Share on other sites More sharing options...
OldAndrewE Posted May 19, 2022 Share Posted May 19, 2022 Plain ended pipe should be fine with rubber pipe connections. Just make sure you use proper round clips (not jubilee type)Copper Fuel Line | Car Builder - Kit & Classic Car Parts Specialist Link to comment Share on other sites More sharing options...
Gridgway Posted May 19, 2022 Author Share Posted May 19, 2022 Thanks and noted re the clips!I've been recommended the Sytec pro fpr which doesn't have a built in filter. My system doesn't currently have a fuel filter.Is it recommended to have one? Link to comment Share on other sites More sharing options...
Tazio Posted May 19, 2022 Share Posted May 19, 2022 As others have said, using rubber to the copper/nickel pipe is ok providing the appropriate clips are used, I chose to put AN fittings on as I had some available. The Facet pump has an internal filter fitted, though it's sensible to put another in-line one too.Alan Link to comment Share on other sites More sharing options...
Tazio Posted May 19, 2022 Share Posted May 19, 2022 This is how I wired mine.Apologies for my poor drawing Link to comment Share on other sites More sharing options...
Gridgway Posted May 19, 2022 Author Share Posted May 19, 2022 Thanks for the diagram! Where did you run the 12v cable to the pump? In the transmission tunnel? Link to comment Share on other sites More sharing options...
rkeywood Posted May 19, 2022 Share Posted May 19, 2022 I'm pretty sure the pump filter is only to protect the pump - they are only plastic screen and usually 75 (red body) or 200 micron (black body). The Filter King has a 10 micron pleated paper filter. It looks like the Sytec doesn't have a gauge point either so a Filter King might be a tidier option at not much extra cost, probably less than £80 if you shop around / use club discount for alloy body FPR007 with set up gauge loose. Incidentally unless you're going really OTT on power a Silver Top Comp' will save a few quid and is good for 200Hp (30GPH, 6-7 psi)R Link to comment Share on other sites More sharing options...
OldAndrewE Posted May 19, 2022 Share Posted May 19, 2022 The Sytec FPR is fine and you could use an inline Sytec filter (glass bodied so you can see what is going on). I have a similar FPR on my Mini (branded Purolator). It could even be the same, just different branding. I am told the numbers on it are not actual psi values, just a scale. May be sensible to make provision to measure the fuel pressure. On the Mini the FPR and filter are on the front bulkhead and I have a solid state Facet pump in the bootAs an alternative there are Filter King FPRs that have provision for a fuel pressure gauge. So all 3 things in one unit Link to comment Share on other sites More sharing options...
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