redboost10

http://store.summitracing.com/...w=sku

just making sure this is alright to use on my fuel pump

turbosi03

Yeah it will work. Although...

"Prevent voltage drops, maintain fuel pump pressure."

I don't see how a relay can prevent voltage drops when it will be connected to the same voltage supply (your battery) as the original circuit. No caps included in the kit.

Do yourself a favor and solder all connections instead of crimp

redboost10

ill be sure to solder everything. is anyone running a circuit breaker also? i saw an aeromotive relay harness kit with a 40 amp relay and a 30 amp circuit breaker.

underpressure02

That is the same kit I am running in my car with a weldon pump. So far so good.

redboost10

awesome, i got a weldone pump too, so thats good to know. thank you

slow poke

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbosi03 &raquo;</TD></TR><TR><TD CLASS="quote">Yeah it will work. Although...

"Prevent voltage drops, maintain fuel pump pressure."

I don't see how a relay can prevent voltage drops when it will be connected to the same voltage supply (your battery) as the original circuit. No caps included in the kit.</TD></TR></TABLE>

Well the stock fuel pump wire is much smaller then the wire included in the kit. So the stock wire will just switch the relay and the power will come directly from the battery VIA the upgraded wire in this kit.

Anyone pushing more then 400HP should upgraded the fuel pump wire even if you are just using a Walbro.

redboost10

this is the way i plan to hook it up, like sfwd 1934

https://honda-tech.com/zerothread?id=1718679

very simple, and no toggle switch, primes with key on.

turbosi03

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slow poke &raquo;</TD></TR><TR><TD CLASS="quote">

Well the stock fuel pump wire is much smaller then the wire included in the kit. So the stock wire will just switch the relay and the power will come directly from the battery VIA the upgraded wire in this kit.

Anyone pushing more then 400HP should upgraded the fuel pump wire even if you are just using a Walbro. </TD></TR></TABLE>

I see your point.. However, if stock wire is around 20-22ga and this kit has 16-18ga wire... The difference in (I^2)R losses between the two are probably insignificant.

Has anyone ever burned out stock wire from using upgraded fuel pump?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgh99si &raquo;</TD></TR><TR><TD CLASS="quote">ill be sure to solder everything. is anyone running a circuit breaker also? i saw an aeromotive relay harness kit with a 40 amp relay and a 30 amp circuit breaker. </TD></TR></TABLE>

Circuit breaker would work but I would opt for an inline fuse. You definately want one or the other in any circuit you add to your car.

slow poke

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbosi03 &raquo;</TD></TR><TR><TD CLASS="quote">Has anyone ever burned out stock wire from using upgraded fuel pump?</TD></TR></TABLE>

I have not seen any fry but I have seen many cars on the Dyno go lean up top because of the stock wire and walbro. Upgrade the wiring for the pump and the issues disappears. Id say this is a pretty common thing among tuners, ask around.

Its not about resistance loss either, its about how much current the wire supports. The stock wire DOES NOT CUT IT.

Any external pump is going to draw way more current then a stock pump and NEEDS better wire. I go with 14 gauge for my setups though. Dont know about 18 gauge that comes with this kit. 16 should be good though.

nfn15037

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbosi03 &raquo;</TD></TR><TR><TD CLASS="quote">I see your point.. However, if stock wire is around 20-22ga and this kit has 16-18ga wire... The difference in (I^2)R losses between the two are probably insignificant.

</TD></TR></TABLE>

How small of a difference qualifies as 'insignificant'?

redboost10

i plan to run 10 g. wire

slow poke

Thats over kill! You will never need more then 12 gauge

redboost10

im running it through a distribution block though, check the link i posted above about wiring a kill switch

heres the link on how i will hook it up, its sfwd 1934 way of hooking it up.
https://honda-tech.com/zerothread?id=1718679

turbosi03

Ah, I see. The worry is about current limitation rather then pump failure. I agree with Slow Poke with a technical correction:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slow poke &raquo;</TD></TR><TR><TD CLASS="quote">
Its not about resistance loss either, its about how much current the wire supports. The stock wire DOES NOT CUT IT.
</TD></TR></TABLE>

I was refering to power loss in the wire earlier, but it is exactly about wire resistance. A smaller ga wire electrically looks like a larger resister in a circuit, which is more current limiting due to the power dissipated in the wire. The power loss from the wire must be more significant then I suspected. Probably because the wire runs the lenght of the car...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgh99si &raquo;</TD></TR><TR><TD CLASS="quote">i plan to run 10 g. wire</TD></TR></TABLE>

A walboro pump draws 8amps @ 12volts with 50psi fuel pressure. 10ga wire is good for 20~25amps... Your just adding wieght to your car if that big of wire is used for fuel pump.

redboost10

im using a weldon 2035 whcih pulls about 19 amps at 55 psi or somwhere around that psi

turbosi03

19 Amps! You would blow a fuse for sure if you tried to run that pump without a relay.

redboost10

yeah, thats why i think ill go with a 40 amp one just to be safe, and 10 gauge wire

jz98ctr

if you know approximately how much current the pump will be sucking then you will use the appropriately sized fuse for the job. don't overkill the crap out of it cuz if u have a problem where the fuse is supposed to blow u r gonna have evn bigger problems on ur hands. overdrawn circuit+close proximity to fuel=big hole in pocket

jz98ctr

and in ur ***

redboost10

weldon company said to use a 40 amp relay, so i just wanted to know if anyone was using the one that i posted from summit, its the painless brand