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Post by Kev on Feb 25, 2008 16:17:41 GMT
I will address this to Phil (cos he knows everything) but the rest of you feel free to chip in. ;D
Phil, Do you know what amp rated cable i should use when siting my electric fuel pump in the boot ? Am i right in thinking the amp's get reduced over a longish distance.
Big Kev.
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Post by harvey on Feb 25, 2008 17:14:33 GMT
Why are you fitting the pump in the boot? Unless you use two you'll lose the reserve. If you fit it forward of the reserve tap and you still get the reserve but can use only one pump. And the cable distance is shortened at the same time.
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Post by johnwp5bcoupe on Feb 25, 2008 17:19:12 GMT
Hi Kev 10 amp should be fine over 12 foot the voltage drop will be negligible you would get away with 5 but 10 would give you more reserve and fit a 5 or 7 amp fuse As Harvey says I fitted mine after the tap
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Post by Phil Nottingham on Feb 25, 2008 17:33:00 GMT
I agree with John - the boot is not the best place as its noisy and you will loose the reserve. Use SEARCH for more debate and pictures.
As to wiring VOLT drop is the issue and the longer the run and higher the current the more it is but even with light duty wiring eg 14/0.30 1mm sq it should be Ok
I have used 28/0.30 m, 2mm Sq rated at 17.5 amp is the best although modern thinwall at 16/0.20 0.5mm sq at 11 amp will do.
Both should be run in sleeving although the old fashioned 17.5A can be run alongside the existing loom if carefully clipped adequately.
Run from the unfused IGNITION CONTROL side of the fusebox via a line fuse at 20A NOT the coil supply
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Post by johnwp5bcoupe on Feb 25, 2008 18:35:49 GMT
When I checked the current drawn by my pump in the "atac atac" mode in othe words priming it was drawing just over 3.5 amps in the supply mode under 2 amps this will of course depend on your pump chosen (mine is fused at 7 amps) If your maximum current drawn is shall we say is 5 amps a 10 amp fuse should be used and never fuse beyond the rating of the cable otherwise the cable will be the fuse and will glow nicely while the PVC smoulders
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Post by Kev on Feb 26, 2008 7:38:28 GMT
Gentlemen thankyou, I have run the Facet for 3 years in the engine bay and i cannot see it will be any noiser when sited in the boot than in the front.Also in all the years ive owned the car i have never even pulled the reserve knob..........luckily. Thanks again..............off to buy some wire. Big Kev.
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Post by johnwp5bcoupe on Feb 26, 2008 9:01:29 GMT
Glenn has his in the boot Kev he is rich like you and has a full tank at all times so no need for the reserve I mounted my Facet with the anti noise/vibration pads which was good but when I fitted the pre pump filter it increased the noise acting as a resonance chamber
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Post by DaveCole on Feb 26, 2008 13:23:57 GMT
Hi Kev & everyone else.
I have a Facet pump fitted under the floor below front seat, just behind the back of the subframe (the subframe gives it some protection from stones etc). I have found the vibration and noise upsetting in my elderly carriage of distinction so I am replacing it with Bosch helical type.
Big point though Kev and all and it's not mentioned in this thread. For safety's sake fit a trembler switch. Mine a resettable one from a Rover 200/25 fitted on the bulkhead between fusebox and heater matrix within easy reach. You don't want petrol squirting everywhere after an accident.
Cheers all
David
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Post by johnwp5bcoupe on Feb 26, 2008 14:19:13 GMT
I wonder how many are fitted with a Trembler Dave I tried my local breakers I got "dont know what it looks like mate" I should try to source one my pump is on the cross member in the tunnel you can hear it when the car isn't running and when it runs low before I pull the reserve apart from that it is fine I will be interested in how you get on with the Bosch keep me posted
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Post by Phil Nottingham on Feb 26, 2008 17:08:21 GMT
Such devices have been mentioned in the past - they are called inertia switches and are fitted to almost all modern cars. Rover never fitted them till the 820 range although an oil pressure activated one was fitted on SD1.
Holdens used to do both types.
I too think the Facet pumps are noisey but the stainless exhaust drowns it out!
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Post by redsunbeam on Feb 26, 2008 17:22:31 GMT
Inertia switches were fitted to the TR6, and are available anywhere that does triumph spares, not expensive either.
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Post by johnwp5bcoupe on Feb 26, 2008 18:04:57 GMT
I too think the Facet pumps are noisey but the stainless exhaust drowns it out! You know how to hurt a P5b owner Phil I will try the local Triumph dealer redsunbeam
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