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wayne spencer
Guest
easy there i have a 1.2 bravo and wonderd what the diameter of the butterfly is in the inlet manifold and what size is it on the hgt thanks
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butterfly
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Tom
Guest
Do you want to know the diameter of the actual throttle openning or the diameter of the air feed pipe?
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wayne spencer
Guest
throttle opening
the throttle opening please mate i tried to measure it and got about 35mm is this right and a man in the know said i need one about 45mm cheers
the throttle opening please mate i tried to measure it and got about 35mm is this right and a man in the know said i need one about 45mm cheers
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Tom
Guest
Re: throttle opening
No idea. What are you trying to do??? Sounds interesting.
No idea. What are you trying to do??? Sounds interesting.
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wayne spencer
Guest
if you swap a small diameter butterfly for a larger one it can give you a great increase in bhp. my mate has an escort 1.6 and gained 9 bhp by doing this and it only cost £150 bargin.
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Tom
Guest
I'd be careful though. What sort of escort was it?
Alot of the Bravo's use MAP (mass air pressure) injection systems and rely on the pressure drop through the inlet to calculate the airflow and hence the amount of fuel. If you change the throttle for a bigger one you get less pressure drop and the ECU will give less fuel which means less power.
If its a MAF system (mass air flow) which uses a flow meter then you might get some improvement. I'd try induction kit and exhaust first. The Fiat induction system is quite restrictive.
Alot of the Bravo's use MAP (mass air pressure) injection systems and rely on the pressure drop through the inlet to calculate the airflow and hence the amount of fuel. If you change the throttle for a bigger one you get less pressure drop and the ECU will give less fuel which means less power.
If its a MAF system (mass air flow) which uses a flow meter then you might get some improvement. I'd try induction kit and exhaust first. The Fiat induction system is quite restrictive.
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wayne spencer
Guest
throttle opening
i already have a induction kit and exhaust. hoe do i find out if its a maf or map
i already have a induction kit and exhaust. hoe do i find out if its a maf or map
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Tom
Guest
Re: throttle opening
Got a haynes manual? They usually give good descriptions of the induction system.
I still think you will have probs, Fords generally have much more interchangability of parts between models that Fiat. Fiat never seem to use the same part twice on different models.
Best of luck.
Got a haynes manual? They usually give good descriptions of the induction system.
I still think you will have probs, Fords generally have much more interchangability of parts between models that Fiat. Fiat never seem to use the same part twice on different models.
Best of luck.
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wayne spencer
Guest
throttle opening
chears watch this space i'll let you know
chears watch this space i'll let you know
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alfanige
Guest
MAF
The 1.8 is MAF. the 1.2 & 1.6 are MAP. I dont know about the 1.4
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The 1.8 is MAF. the 1.2 & 1.6 are MAP. I dont know about the 1.4
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Tom
Guest
Re: MAF
Thought so. Looks like you are stuck with the throttle on there unless you can find an ECU tuner that will reprogram yours for a larger throttle openning.
Thought so. Looks like you are stuck with the throttle on there unless you can find an ECU tuner that will reprogram yours for a larger throttle openning.
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Anonymous
Guest
Re: Re: MAF
Might as well do machined port and polish will give you a free revving, FSE fuel regulator, factory made exhaust extractor, Chipping, etc.
Thanks,
Might as well do machined port and polish will give you a free revving, FSE fuel regulator, factory made exhaust extractor, Chipping, etc.
Thanks,