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Location:
Lismore, NSW
Registered:
February 2003
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MA70 Fuel Pump
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Sun, 03 August 2003 10:15
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How much boost can I run untill the fuel pump decides it cant produce enough fuel???
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Location:
Brisbane
Registered:
May 2002
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Re: MA70 Fuel Pump
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Mon, 04 August 2003 01:15
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I know they're safe to at least 12psi, or wherever factory fuel cut occurs anwyay.
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Location:
Lismore, NSW
Registered:
February 2003
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Re: MA70 Fuel Pump
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Mon, 04 August 2003 09:21
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Running a aftermarket computer, planning to run bout 16psi? will it handle that?
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 Fuel Pump
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Tue, 05 August 2003 11:36
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will soon tell on the dyno! stock injectors are good for about 400hp apparently!
If the duty cycle gets too high before that the pump is runing out of balls one would say!
Defintly interested to know for shure tho! and what ecu are you going to run? the Haltech E11 looks good just wondering if it can deal with the 7M ignitor tho!
Allan
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Location:
Sydney
Registered:
July 2002
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Re: MA70 Fuel Pump
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Tue, 05 August 2003 23:01
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If your gonna run an aftermarket computer, looking into getting a Rising Rate Fuel Pressure Regulator (RRFPR). With higher fuel pressure, your injectors can go beyond their duty cycle.
And watch it very carefully when tuning.
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Location:
Brisbane
Registered:
November 2002
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Re: MA70 Fuel Pump
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Tue, 05 August 2003 23:48
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A friend (Norbie, I'm talking about Danny) has 247 rwkW from his MA70, and if he has replaced the pump it has only been recently. He was certainly running figures in excess of 200rwkW on the pump, I am just unsure if it was replaced when he got his latest tune done.
Personally, though, I would replace the fuel pump as a matter of course when undertaking modifications on a car, particularly a turbo one.
Detonation is not thy friend.
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 Fuel Pump
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Tue, 05 August 2003 23:48
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| HKSPete wrote on Wed, 06 August 2003 09:01 |
If your gonna run an aftermarket computer, looking into getting a Rising Rate Fuel Pressure Regulator (RRFPR). With higher fuel pressure, your injectors can go beyond their duty cycle.
And watch it very carefully when tuning.
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sorta right there the injectors flow more for a given duty cycle when you raise the fuel pressure
NEVER go more then 95% duty cycle its bad for your injectors! also be carefull bumping the pressure up on 15year old fuel lines last thing you want is an engine fire on the dyno!
Allan
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Location:
Sydney
Registered:
July 2002
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Re: MA70 Fuel Pump
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Wed, 06 August 2003 01:57
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should've been "your injectors can go beyond their standard flow"
fyi: At the moment my injectors are running at about 60% duty cycle on full load. With standard fuel pressure its around 85-95% duty cycle.
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Location:
Lismore, NSW
Registered:
February 2003
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Re: MA70 Fuel Pump
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Wed, 06 August 2003 09:50
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I was looking at Wolf, I have previously used wolf in my supercharged ute & my dad uses one in his turbo celica and I am quite happy with them. What I might do is run it on the dyno and slowly increase the boost and see what the injectors and fuel pump can handle before it leans off... What is the main purpose of a rising rate fuel regulator? Cheers to all.
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