13bmaniac

iTrader: (5)

hello i made 457 rwhp with my t78 at 16 psi on my street ported engine, now im planning to run more boost with race gas and im afraid of getting short of fuel press. im running a bosh 044 fuel pump but im planning on buying a cj motorsports dual fuel pump with the 044 clamps and run one pump to each rail so i have plentyof fuel, what do you guys think of these? its too muchu or it will be a safe move.
thanks

charlies7

iTrader: (4)

You can never have enough fuel. The CJ kit is nice because it is a direct drop in, plus its built with quality in mind.

13bmaniac

iTrader: (5)

yes the cj twin pump its top notch, the thing is that i dont know if running 2 lines one for each rail or "y" them up before the rails so im listening to opinions of what you guys recomended me.
thanks

Uncle Hungry

iTrader: (2)

Y them up imo. If one dies it won't be catastrophic..

phunk

i would recommend Y'ing them together and then splitting them again before the rails, this ensures even pressure to both rails. however the positive of running them seperated how you mention is that if one pump did die the car would run terrible or possibly not at all depending on which rail died. with them Y'd together you wouldnt know if one died until the car leans out under high boost, even then you might be left scratching your head on what happened until you checked the pumps.

13bmaniac

iTrader: (5)

yes in that case i will have to use 2 Ys one to route the 2 pumps in to one line after the rails and then aother Y to go to both rails in this case will have the same flow the 2 rails i will save some hose but i will need 2 Ys. in this case what the hose should measure? i was thinking a half inch hose and i will have to buy 2 Ys from summit to complete the job..

thanks for thehelp guys

fritts

iTrader: (5)

Main reason I will not run twin pumps, one dies no matter how they are plumbed you run lean and are blowing an engine. Running one pump (properly sized) and the pump dies you have a better chance of not blowing the engine. Though you won't be going anywhere.

Indian

iTrader: (1)

so what do you recommend for the "perfect" single pump? remember it should atleast flow the same if not more than the twin 280lph bosh pumps.

fritts

iTrader: (5)

It won't be in tank but an A1000 or an SX 18203.

ivegonemad

^wise words ,make it simple instead of making it complicated, run a sumped tank with either pump mentioned by fritts..had the same response from everyone I asked..

13bmaniac

iTrader: (5)

well my other option was to run the aeromotive a1000 but intank i dont wani it outside, if some of you guys have pics or know how to put this baby intank i will apreciate the info i think it will simplify my life but custom work have to be done of course

ivegonemad

https://www.rx7club.com/showthread.p...=in+tank+a1000

old but good, the rest of the threads i found were discussions on gravity fed pumps such as the A1000, this is closely related to your but it was short.

why dont you want to run a sumped tank??

Howard Coleman

iTrader: (6)

another option would be a Kenne Bell Boost A Pump (BAP).:



note the red control module and the adj dial...

this simple setup, which only works during boost, ran my 850/1600s to 90% duty cycle maintaining pressure. i log my fuel pressure so i KNOW my pressure at all points on my map.

the BAP sure makes things simple. i have run it at a 20% voltage boost w my Cosmo pump for five years.

currently i run about 20+% methanol so my duty cycle is down about 15 points...

simple. love it.

hc

elwood

iTrader: (1)

I run the MSD Pump Booster (which I think is very similar to the Kenne Bell version) with my Bosch 044, and my fuel pressure was rock solid at 14PSI and 430 RWHP -- with the pump gain set to the minimum. I feel confident this setup could fuel a much higher power level.

13bmaniac

iTrader: (5)

thanks for the info guys, i think my best and simple option here in to mount the a100 alone i will opena thrad to se how many people have done this.

cheers

SPEED_NYC

iTrader: (3)

the a1000 is a peice of junk, if you like keeping your motor together run the dual 044 bosch pumps. they are oem quality and last forever. the a 1000 WILL fail after a year or so if you put any rear miles on your car. also the a1000 dosent like to sit in traffic it will get hot and shorten its life span even more. i've been running dual 044's for 8 years now with not one single fuel related issue.

Indian

iTrader: (1)

another thought? are the Bosch 044 intank pumps? thought they were inline.

elwood

iTrader: (1)

Any flow-thru pump can be mounted in a tank. The pump doesn't care. Mine's outside the tank, but I think I'd put it in the tank if I had to do it over again. It's kinda loud.

Also, I agree with the comments on the durability of the A1000. If you're dead set on running one, get the pump controller. The pump is made for drag race -- read intermittent use. If it is used steady state, the PWM controller is needed to keep temps under control and durability up.

adunlap

iTrader: (2)

Not in tank but:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/dual-bosch-pump-setup-%2Apix%2A-735559/
I would also suggest a large single or dual feed lines. Cavitation is what kills alot of race pumps.
A single 044 and kenne belle boost-a-pump would be a sweet setup too.

13bmaniac

iTrader: (5)

yes i thing ill pass with the a1000 i will be running dual bosch with the cjmotorsports dual sistem

thanks to all

13bmaniac

iTrader: (5)

hello my friends i found a very nice pic of what i want to do i been told that is a member of the forum so if you know ho did this i will aprciate the info, is the same thing i want to do has dual bosch 044 fuel pumps with the cj motorsports twin pump bracket but i dontknow the size of the hoses and fittings. my rx7store.net fuel sistem has 6an fittings so i wonder if i use 6an as well to do this or should i use 8an or 10an. all the info will be apreciate.
thanks again

oorx7

iTrader: (2)

the CJM twin pump assembly has -6 bulkhead fittings, so if you currently have 2 -6 feed lines and one -6 return line by your tank, it should all just hook up.

oorx7

iTrader: (2)

as for the intank plumbing, im not sure where to get it, but you need a fitting that threads into the top of the pump and adapts to a -6 AN male. Then you will need a total of 4 -6 Tube/Nut assemblys, some aluminum -6 hardpipe, a 3/8 tube bender, and a 37 degree flaring tool. That will allow you to construct hardpipes in there like that setup has.

ninjarx7

Does anyone have contact information including a website for CJM?

overspooled

They are a little noisy(a1000), and I have heard they are not great everyday performers..they get hot.

I have seen some weldon setups dailydriven without issue...on long trips too...
I've seen a few 2025a setups and there seems to be more than plenty of fuel there....