weres the re-wire thread gone?
24-05-2008, 06:52 AM
#6
20K+ Super Poster.
Q What happens to the METAL of a car ?
A It RUSTS!!
So why put an EARTH where it IS going to suffer from CORROSION ?
If you want peice of mind earth straight from the battery, otherwise you introduce many more points of high resistance.
The relay in the drawing is NOT SPDT it is a SPCO.
tabetha
A It RUSTS!!
So why put an EARTH where it IS going to suffer from CORROSION ?
If you want peice of mind earth straight from the battery, otherwise you introduce many more points of high resistance.
The relay in the drawing is NOT SPDT it is a SPCO.
tabetha
24-05-2008, 08:45 AM
#7
Tabs
The picture was quickly drawn up by a friend of mine in Paintshop as I'm sure you can see
As regards to the relay, I've no idea but I used the same relay as him, which is why all the pins are numbered as they were indentical (I don't know if this is generic throughout relays?)
I think it was an SPDT from memory
Where would you earth then?
The picture was quickly drawn up by a friend of mine in Paintshop as I'm sure you can see
As regards to the relay, I've no idea but I used the same relay as him, which is why all the pins are numbered as they were indentical (I don't know if this is generic throughout relays?)
I think it was an SPDT from memory
Where would you earth then?
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24-05-2008, 10:05 AM
#9
I earthed mine to the chassis along with several other componants....cleaned an area of chassis that was tucked out of harms way ie behind bulk head metal trim panel, drilled a M8 sized hole and made a decent earthing point using a nut and bolt to make the poll then another nut on top of the terminals.....after which all earth points were covered in petrolium (sp?) jelly (im sure most the people who use the muppet section will know what that is 
)
)
24-05-2008, 10:09 AM
#10
Q What happens to the METAL of a car ?
A It RUSTS!!
So why put an EARTH where it IS going to suffer from CORROSION ?
If you want peice of mind earth straight from the battery, otherwise you introduce many more points of high resistance.
The relay in the drawing is NOT SPDT it is a SPCO.
tabetha
A It RUSTS!!
So why put an EARTH where it IS going to suffer from CORROSION ?
If you want peice of mind earth straight from the battery, otherwise you introduce many more points of high resistance.
The relay in the drawing is NOT SPDT it is a SPCO.
tabetha
24-05-2008, 01:40 PM
#15
I put ours behind the carpet/cover on the rear quarter panel
You should have earthed it on the chassis like the diagram showed Kev
Leading back to the battery will give a high resistance, you want the shortest earth wire possible.
And as for my mate Gav who made it, I wouldn't like to comment on how attractive he is, as I am not that way enclined 
You should have earthed it on the chassis like the diagram showed Kev
Leading back to the battery will give a high resistance, you want the shortest earth wire possible.
And as for my mate Gav who made it, I wouldn't like to comment on how attractive he is, as I am not that way enclined
24-05-2008, 02:21 PM
#26
if you ever have a battery voltage issue, it will happen when the pump is under load...and the turbo is on boost....hot, and cooking the alternator....
very very common problem
at idle, means nothing tbh
think,on boost,your pump has to make twice the pressure in most cases
very very common problem
at idle, means nothing tbh
think,on boost,your pump has to make twice the pressure in most cases
Last edited by JTECH James; 24-05-2008 at 02:23 PM.
24-05-2008, 02:40 PM
#34
like having no sound deadening, straight cut box you mean?
yes im sure it will be noisy, im past caring about that now.
having in car fuel cell made...
to go with rock solid suspension, and 500ponies
its only for fun now, so to hell with practical
yes im sure it will be noisy, im past caring about that now.
having in car fuel cell made...
to go with rock solid suspension, and 500ponies
its only for fun now, so to hell with practical
Last edited by JTECH James; 24-05-2008 at 02:42 PM.
24-05-2008, 05:49 PM
#38
20K+ Super Poster.
STU,
The POINT you seem to miss is the cossie that are being worked on are not to a BUDGET, nowhere did I say rewire the whole car back to the battery for the earth side THOUGH SOME ARE.
For the minute amount of extra cost, it eliminates LOADS of potential high resistance points, WHY RISK IT IF YOU DON'T HAVE TO ?
The SPDT relay is actually a SPCO relay.
Sorry if it sounded like a dig, it was not intended as such.
Most relays are to DIN marking, as in 30/85/86/86, + on some as this pictured one 87a.
SPCO, Single Pole Change Over, a single input that CHANGES from 87 to 87a upon switching.
It can be used with no problems, but is normally for other things, the "normal" on eis SPST, Single Pole Single Throw, single input, single output on 87 when switched on.
Just as an example 10mm2 cable carries 70 AMPS continuous, with peaks at around 200 AMPS.
As anyone doing this is laying a new wire from the battery anyway, how much longer how much more cost to lay a new earth as well, for 100% security, the REASON for doing it in the first place.
It does not matter at all what you do to the LIVE, if the earth is crap the pump still cannot work correctly, as you will STILL have high resistance opposing the flow of electrons returning to the battery.
tabetha
The POINT you seem to miss is the cossie that are being worked on are not to a BUDGET, nowhere did I say rewire the whole car back to the battery for the earth side THOUGH SOME ARE.
For the minute amount of extra cost, it eliminates LOADS of potential high resistance points, WHY RISK IT IF YOU DON'T HAVE TO ?
The SPDT relay is actually a SPCO relay.
Sorry if it sounded like a dig, it was not intended as such.
Most relays are to DIN marking, as in 30/85/86/86, + on some as this pictured one 87a.
SPCO, Single Pole Change Over, a single input that CHANGES from 87 to 87a upon switching.
It can be used with no problems, but is normally for other things, the "normal" on eis SPST, Single Pole Single Throw, single input, single output on 87 when switched on.
Just as an example 10mm2 cable carries 70 AMPS continuous, with peaks at around 200 AMPS.
As anyone doing this is laying a new wire from the battery anyway, how much longer how much more cost to lay a new earth as well, for 100% security, the REASON for doing it in the first place.
It does not matter at all what you do to the LIVE, if the earth is crap the pump still cannot work correctly, as you will STILL have high resistance opposing the flow of electrons returning to the battery.
tabetha
25-05-2008, 12:13 PM
#39
03-06-2008, 02:28 PM
#40
Wahay!! I've lost my Virginity!!
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I going to rewire my fuel pump when I replace the filter etc.
Can someone please tell me what amp relay and wiring etc is recommended so I can order the stuff up.
CheeRS
Can someone please tell me what amp relay and wiring etc is recommended so I can order the stuff up.
CheeRS