Which relay to buy for Fuel Pump Rewire?!?!?!
#1
Which relay to buy for Fuel Pump Rewire?!?!?!
as the title states
theres like 5 different Bosch 30-40amp relays
i'm so confused, i'm not sure if they're all the same thing, just advertised differently or if some aren't waterproof or something
could someone post a link to the correct one, it would be nice if it was a link to a place that i could just click the "buy" button lol
thanks guys!
theres like 5 different Bosch 30-40amp relays
i'm so confused, i'm not sure if they're all the same thing, just advertised differently or if some aren't waterproof or something
could someone post a link to the correct one, it would be nice if it was a link to a place that i could just click the "buy" button lol
thanks guys!
#3
Rotary Enthusiast
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You don't really need one though, unless you're planning on having a manual switch to turn on the fuel pump.
You can just run it straight through the fusebox in the engine bay, easier and cleaner imo
You can just run it straight through the fusebox in the engine bay, easier and cleaner imo
#6
silver ghost
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Like Tom stated if you plan on running some higher horsepower this one's a no brainer. http://rx7.com/store/rx7/fuelpumprelay.html The standard ones tend to heat up and wear out over time. This one might seem like overkill but for the price its peace of mind. Wont leave you stranded. G
#7
Committee Member #2
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Damn... G
That looks like a starter soleniod for a Ford from 1990....
Tom is right, any relay works, the best out there are Bosch but trying to get one is almost impossible. I went to many stereo shops and auto parts and no one carries them anymore so I bought what they sell. I also bought a spare and will keep it in the car just in case..
L8R
That looks like a starter soleniod for a Ford from 1990....
Tom is right, any relay works, the best out there are Bosch but trying to get one is almost impossible. I went to many stereo shops and auto parts and no one carries them anymore so I bought what they sell. I also bought a spare and will keep it in the car just in case..
L8R
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#10
AponOUT!?
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Don't forget:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/word-about-re-wiring-your-fuel-pump-%5Bpics%5D-921896/
and
https://www.rx7club.com/classifieds-violations-265/theories-why-im-always-poor-1993-ssm-build-951172/page8/
(scroll down to post 189 and after)
Hope that helps...
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/word-about-re-wiring-your-fuel-pump-%5Bpics%5D-921896/
and
https://www.rx7club.com/classifieds-violations-265/theories-why-im-always-poor-1993-ssm-build-951172/page8/
(scroll down to post 189 and after)
Hope that helps...
#11
Senior Member
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Always use relays for switching high current components. A fuel pump definately requires a relay; I would never use an ECM to directly operate a fuel pump. You can use four pole or five pole relays. I typically use the 50 amp rated relays; they are good for just about anything except for main power switching and for four or five bucks - cheap.
Waytek has an appropriage selection:
http://order.waytekwire.com/products...d%20Solenoids/
They also have the sockets for the relays:
http://order.waytekwire.com/CGI-BIN/...472002+M50+ENG
Your local NAPA also has all of this stuff......
Waytek has an appropriage selection:
http://order.waytekwire.com/products...d%20Solenoids/
They also have the sockets for the relays:
http://order.waytekwire.com/CGI-BIN/...472002+M50+ENG
Your local NAPA also has all of this stuff......
#12
Racing Rotary Since 1983
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the wrong relay can destroy any and all solid state modules in the elec system.
the relay must have either a diode or resistor in it to suppress voltage spikes that can be 100-200 volts when the magnetic field collapses.
note the sticker on the relay in the above rx7.com link...
i currently have two Power FCs being rebuilt due an improper relay,
howard
the relay must have either a diode or resistor in it to suppress voltage spikes that can be 100-200 volts when the magnetic field collapses.
note the sticker on the relay in the above rx7.com link...
i currently have two Power FCs being rebuilt due an improper relay,
howard
#14
silver ghost
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I have been using this for four years and never had a pump problem. Pump rewired with 10 gauge wiring. I had two small relays fail on me in three years previous and the car only sees three to four thousand miles a year. G
#15
FD Project
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this is the one im using, 40 amp sealed housing. you have to make the wiring.
http://www.bmotorsports.com/shop/pro...roducts_id/503
best thing is you could do any gauge wire and not be stock with premade pig tails that either the wire gauge is to small or you have to solder wires to extend the pigtails to your pump,fans or coils.
you could also find here the injector connector kit
ignition coil connector/same as toyota
http://www.bmotorsports.com/shop/pro...roducts_id/503
best thing is you could do any gauge wire and not be stock with premade pig tails that either the wire gauge is to small or you have to solder wires to extend the pigtails to your pump,fans or coils.
you could also find here the injector connector kit
ignition coil connector/same as toyota
Last edited by BLACK MAMBA; 10-15-11 at 07:39 AM.
#16
Rotary Enthusiast
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I just ordered a 70 amp relay from McMaster-Carr that "can handle a high-inrush current of up to 120 amps", part number 9672K36 $13.64 .
http://www.mcmaster.com/?orderview=n...17/895/=eq3aws
I'm also going to order some Insulated electrical bulkhead connectors to get my fuel pump rewire down to the pump.
http://www.mcmaster.com/?orderview=n...17/895/=eq3aws
I'm also going to order some Insulated electrical bulkhead connectors to get my fuel pump rewire down to the pump.
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