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by **avinesh** » Thu Aug 28, 2008 3:38 am

how much power can the stock fuel pump in a jza80 twin turbo supra handle....was thinking of upping the boost a bit but wana make sure first

by **the fallen303** » Thu Aug 28, 2008 9:48 am

will be fine, stock pumps can handle 1 bar boost easy.

by **avinesh** » Thu Aug 28, 2008 12:34 pm

the fallen303 wrote:will be fine, stock pumps can handle 1 bar boost easy.

what about 16psi.....have seen a lot of supra guys running 16psi, is this safe????

by **1I1** » Thu Aug 28, 2008 12:49 pm

avinesh wrote:
the fallen303 wrote:will be fine, stock pumps can handle 1 bar boost easy.

what about 16psi.....have seen a lot of supra guys running 16psi, is this safe????

Correct me if i am wrong but thats pretty close to 1 bar (might be 1.1bar)

by **the fallen303** » Thu Aug 28, 2008 1:01 pm

my 1j is running stock fuel at 17psi, still fine, and i have way smaller injectors and fuel pump. lot of aristo's in aussie running 18+psi on their 2j's with stock fueling, will be doing the same with ours once get boost controller sorted.

by **BlakeNZ** » Thu Aug 28, 2008 2:59 pm

your turbos will run out of flow before your fuel system does..supra pumps are one of the best. up to 300rwkw.

by **Lith** » Thu Aug 28, 2008 5:31 pm

BlakeNZ wrote:your turbos will run out of flow before your fuel system does..supra pumps are one of the best. up to 300rwkw.

x2, from what I recall they can pump quite happily.

by **avinesh** » Thu Aug 28, 2008 5:41 pm

Lith wrote:
BlakeNZ wrote:your turbos will run out of flow before your fuel system does..supra pumps are one of the best. up to 300rwkw.

x2, from what I recall they can pump quite happily.

thats great just sumone told me their not that good soo i thought id ask around before buying a new one

by **the fallen303** » Thu Aug 28, 2008 8:32 pm

there is a mod that you can do to make the pump work at 12v all the time, usually they change between high and low voltage, flick to high when foots up it. helps pump last longer, etc.

by **avinesh** » Fri Aug 29, 2008 4:39 pm

the fallen303 wrote:there is a mod that you can do to make the pump work at 12v all the time, usually they change between high and low voltage, flick to high when foots up it. helps pump last longer, etc.

i know wat you mean but is it necessary???

by **the fallen303** » Fri Aug 29, 2008 6:06 pm

not really, can't quite remember why it's done, wether it helps prolong the life of the pump, or just the lack of switching between the two voltages makes sure that always got fuel, can't remember, lol.

by **Jason T** » Fri Aug 29, 2008 9:02 pm

avinesh wrote:
the fallen303 wrote:there is a mod that you can do to make the pump work at 12v all the time, usually they change between high and low voltage, flick to high when foots up it. helps pump last longer, etc.

i know wat you mean but is it necessary???

Have read here http://www.mkiv.com/techarticles/12v_mod/12v_mod.htm

Look around enjoy the huge amount of info

Like when you need to upgrade fuel pump and why http://www.mkiv.com/techarticles/fuel_pumps_test_2/index.html

by **avinesh** » Fri Aug 29, 2008 9:40 pm

what if your in ttc (parallel mode) would the car detonate then around 4000rpm as stated in the write up....seems like a easy mod

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