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Porting Intake Manifold (BBM) 

 

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Posted: Fri Apr 27, 2007 7:33 pm 
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BOSS 4LTR wrote:
so will an xr6t one fit directly to an e-series.


Top half yeah, bottom half I don't believe so due to the different heads. However, the BBM is better for NA vehicles. And unless your running an aftermarket ECU your timing and what not is going to be upset by loosing the BBM butterflies change over.
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Posted: Fri Apr 27, 2007 7:36 pm 
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FAST-XR wrote:
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I thoguth the butterflies were in the top half of the manifold but?
The picture only shows the bottom half with work doen to it.

i thought they were in the bottom, but now that i think about it im not entirely sure, its been a while since ive looked inside one!


Been a while too. I just went and had a look at the car, and I'm fairly sure your right and that they're in the bottom half. So that means using this ported unit would equire an aftermarket ECU to adjust the timing.
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Posted: Fri Apr 27, 2007 7:42 pm 
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twr7cx wrote:
BOSS 4LTR wrote:
so will an xr6t one fit directly to an e-series.


Top half yeah, bottom half I don't believe so due to the different heads. However, the BBM is better for NA vehicles. And unless your running an aftermarket ECU your timing and what not is going to be upset by loosing the BBM butterflies change over.
my TTB manifold is proof to that last part of your post.. :wink:
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 Post subject: BBM manifold
Posted: Sat Apr 28, 2007 12:00 am 
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Vince, as you know this is another item on my to do list , ''which is getting longer every day'' but these days me trying to get anything done is near to imposible so if you want to pursue this project I'll tell what to do ..... & I'll garantee it will make hp !!!!

cheers

Joe.
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Posted: Sat Apr 28, 2007 1:40 am 
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you'll only tell him or you willing to share these glorious wealth of information with all?
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Posted: Sat Apr 28, 2007 6:17 am 
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davey gravey has had his done and he still has the butterflies innot sure if he's on this forum but I do know he frequents modified ford club

 

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Posted: Fri Mar 21, 2008 6:06 pm 
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Does anyone know where I could get a ported BBM done? Except JMM....they want $800 :S

 

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1988 EA S-Pack|MPI|LSD|AIT turbo manifold|Garrett GT3540|3" Exhaust turbo back|Resprayed|microtech LT8s|60lb Injectors|Bosch 044 with surge tank|3000 RPM stall|Ported AU head|Wade turbo cam|Crow double valve springs|1.3mm MLS headgasket|C4 conversion|Built bottom end|10.6@125MPHi

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Posted: Fri Mar 21, 2008 7:37 pm 
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I have found the genuine inlet man. gaskets are smaller than the ports in the head.

 

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Posted: Fri Mar 21, 2008 9:43 pm 
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I have seen diagrams on the net on how the butterflies work. Can't find any at the moment.

 

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Posted: Sat Mar 22, 2008 12:04 am 
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needfordspeed wrote:
Does anyone know where I could get a ported BBM done? Except JMM....they want $800 :S

my mate in warnambool can do it for ya, has a yellow el6, a few people know him, he does performance work on 4ltr fords and he knows what hes doing. his car speaks for his work
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Posted: Sat Mar 22, 2008 4:18 pm 
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Yup I know of the bloke but i'd personally rather not get it done from him, anyone else?

 

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Posted: Sat Mar 22, 2008 4:42 pm 
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mate the amount of money it will cost you, you'd be better off buying an aftermarket plenum?
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Posted: Sat Mar 22, 2008 7:52 pm 
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There's noway i'm payin $800 for one lol, i'm just tryin to see if any other joint does it cheaper......otherwise i'll have to invest in a dremal.

 

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Posted: Sat Mar 22, 2008 7:56 pm 
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i bought one to work on and sell, and f**k that too much work.

An engineer wouldnt even give me a quote as most of his tools wouldnt be suitable he reckoned
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Posted: Sun Mar 23, 2008 10:25 am 
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I know porting is great but after a few hundred hours of research I dont believe there is a big benefit in porting the bbm. The reason why I believe this is that when the runners switch to short butterflies that both long and short paths are both open at the same time.Therefore more then enough air is going down there.

 

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