1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

fuel pump help

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Old Jan 27, 2008 | 07:44 PM
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CT fuel pump help

does anyone now how many psi in a stock 87 t2 fuel pump,am doing a swap in to 84 gslse
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Old Jan 27, 2008 | 07:47 PM
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You'd be better off asking in the 2nd Gen section for that answer.
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Old Jan 27, 2008 | 08:00 PM
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Pump output is 49-71 psi and regualted to 37 psi at the motor. Znet.com specs.
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Old Jan 27, 2008 | 10:06 PM
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From: St Joe MO
Oddly enough, the SE pump puts out more volume than any of the later FI pumps Mazda used in thier rotarys. Even more than the standard Walbro 255 lph upgrade most TII owners opt for.
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Old Jan 28, 2008 | 08:15 AM
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Really? thats interesting that the SE pump puts out that much....
As for the original question I see about 35psi or so at the fuel rails...
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Old Jan 28, 2008 | 07:56 PM
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Originally Posted by trochoid
Oddly enough, the SE pump puts out more volume than any of the later FI pumps Mazda used in thier rotarys. Even more than the standard Walbro 255 lph upgrade most TII owners opt for.
so what are you saying i can keep the se pump
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Old Jan 29, 2008 | 07:26 AM
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Most snd gen guys love our SE's for the fact of the bigger injectors and our fuel pump. Not sure why they went smaller in the next generation. Sean, what are you running in your T2 conversion?
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Old Jan 29, 2008 | 08:02 AM
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I did the in-tank fuel pick up mod (slosh baffle and pump mounting ring from FC welded to a FB tank) and running a FD pump inside. I am looking for a twin turbo Supra pump though, they flow more than the FD pumps do....
Good point about the injectors, just too bad they are only compatible up to 87.5 FC's, anything later has the high impedence.... Sucks for me, all my stuff is S5
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Old Jan 29, 2008 | 09:35 AM
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From: St Joe MO
Originally Posted by chiquirx7
so what are you saying i can keep the se pump

I don't know, can you. Since you haven't said why you asked the pump question , nor said what your plans are, I can't answer that question. The SE pump is the only external FI pump on a rotary, all the later ones are internal and require tank mods along with parts from a 2nd gen fuel tank. If that's the route you wish to go, I can do the tanks mods.
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Old Jan 29, 2008 | 03:47 PM
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Originally Posted by trochoid
I don't know, can you. Since you haven't said why you asked the pump question , nor said what your plans are, I can't answer that question. The SE pump is the only external FI pump on a rotary, all the later ones are internal and require tank mods along with parts from a 2nd gen fuel tank. If that's the route you wish to go, I can do the tanks mods.
Am doing a 2t swap into a 84 gslse body. I need to now what pump I can use to get it to start,i do not want in tank fuel pump
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Old Jan 29, 2008 | 04:45 PM
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I'm using the SE pump. But the car is not finished yet. I'll let you know if it works. According to everyones data about the stock pumps the SE one is the easiest to use on a FB. Not to mention you could easily change to a aftermarket external later since you have the place to mount it. If you out grow the stock SE pump.
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Old Jan 29, 2008 | 05:17 PM
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From: St Joe MO
SE pump will work fine, just don't let the tank get under 1/4 during high boost and cornering.
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