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BBM vs Log manifold in turbo setup 

 

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 Post subject: BBM vs Log manifold in turbo setup
Posted: Sun Feb 14, 2010 9:57 pm 
Getting Side Ways
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i have a BBM im selling at the moment only because i've heard that the features of the BBM are lessened when a turbo is added.
will a BBM make more power/torque in a turbo setup when compared to the log manifold?
i do understand how the BBM works, so im not asking about that..
if the actual function of the BBM isn't as great in a turbo setup, would the BBM without butterflies be a better choice over the log?

 

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 Post subject: Re: BBM vs Log manifold in turbo setup
Posted: Sun Feb 14, 2010 10:00 pm 
Fordmods Junkie
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This belongs in the forced induction workshop.

Ill move it there for you :)

 

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 Post subject: Re: BBM vs Log manifold in turbo setup
Posted: Sun Feb 14, 2010 10:04 pm 
Getting Side Ways
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ahh sorry mate, wasn't sure where to put it :)

 

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XG Panelvan
mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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 Post subject: Re: BBM vs Log manifold in turbo setup
Posted: Sun Feb 14, 2010 11:12 pm 
Getting Side Ways
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BBM is best with boxed upper and front throttle fitted..
With BBM removed & plugged..
Turbo engines don't require long runners to gain torque..
There is nothing wrong with the early E series inlets either...

 

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 Post subject: Re: BBM vs Log manifold in turbo setup
Posted: Mon Feb 15, 2010 12:38 am 
Getting Side Ways
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Generally in a BBM the butterflys are removed. If you've got a BBM leave it and add a plenum.
If you've got a log manifold piping is easier to run, and for boosted applications the log is pretty good.

 

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