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BA And BF N/A bbm mod 

 

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 Post subject: BA And BF N/A bbm mod
Posted: Tue Jan 24, 2017 5:47 pm 
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I've heard of a few people doing the bbm mod but not too sure what exactly is done and if it even works?
If anyone has any information on how to do and if it should be done, it would be great to hear from you.
Thanks
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 Post subject: Re: BA And BF N/A bbm mod
Posted: Fri Jan 27, 2017 3:52 pm 
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Not sure what you mean,I know the turbo guys often remove the butterflies in the BBM but I don't think that would have any advantage in a naturally aspirated engine.

 

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 Post subject: Re: BA And BF N/A bbm mod
Posted: Fri Jan 27, 2017 4:01 pm 
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johnnyeHCF wrote:
Not sure what you mean,I know the turbo guys often remove the butterflies in the BBM but I don't think that would have any advantage in a naturally aspirated engine.


BA/BF turbo came without the butterfly's from factory.

i would imagine you'd loose Torque somewhere, Think it would be in the Top end of the rev range, As didn't the BBM work the long runners up to 3000rpm then switch to the short runners?

 

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 Post subject: Re: BA And BF N/A bbm mod
Posted: Fri Jan 27, 2017 4:07 pm 
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Robert_au wrote:
johnnyeHCF wrote:
Not sure what you mean,I know the turbo guys often remove the butterflies in the BBM but I don't think that would have any advantage in a naturally aspirated engine.


BA/BF turbo came without the butterfly's from factory.

i would imagine you'd loose Torque somewhere, Think it would be in the Top end of the rev range, As didn't the BBM work the long runners up to 3000rpm then switch to the short runners?



and the FG used a totally differant inlet manifold
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 Post subject: Re: BA And BF N/A bbm mod
Posted: Fri Jan 27, 2017 4:14 pm 
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Mad2 wrote:
Robert_au wrote:
johnnyeHCF wrote:
Not sure what you mean,I know the turbo guys often remove the butterflies in the BBM but I don't think that would have any advantage in a naturally aspirated engine.


BA/BF turbo came without the butterfly's from factory.

i would imagine you'd loose Torque somewhere, Think it would be in the Top end of the rev range, As didn't the BBM work the long runners up to 3000rpm then switch to the short runners?



and the FG used a totally differant inlet manifold


Yep FG used a Log style Manifold on the turbos and some sort of plastic fantastic Crap on the NA's.

 

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Current Ride
BA XR6 Turbo, P3 Paint, BP Trim, Fully Stock Mods to Come!
1996 EF Falcon furura, White.
BA XR6 , P3 Paint, BG Trim, !
1995 EF XR6 The newest member of my ford family!

BLUE BLOOD
Previous Rides
1997 EL Falcon
1980 Ford Escort

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 Post subject: Re: BA And BF N/A bbm mod
Posted: Fri Jan 27, 2017 5:08 pm 
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Robert_au wrote:
Mad2 wrote:
Robert_au wrote:
johnnyeHCF wrote:
Not sure what you mean,I know the turbo guys often remove the butterflies in the BBM but I don't think that would have any advantage in a naturally aspirated engine.


BA/BF turbo came without the butterfly's from factory.

i would imagine you'd loose Torque somewhere, Think it would be in the Top end of the rev range, As didn't the BBM work the long runners up to 3000rpm then switch to the short runners?



and the FG used a totally differant inlet manifold


Yep FG used a Log style Manifold on the turbos and some sort of plastic fantastic Crap on the NA's.



correct
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 Post subject: Re: BA And BF N/A bbm mod
Posted: Sun Jan 29, 2017 10:25 am 
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Apparently when the bbm butterflies open at the set rpm (3800 or what ever it is) they only open to around 85% and if you modify something on the actuator or bracket they can open fully to 100%
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