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Ef Throttle body 

 

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 Post subject: Ef Throttle body
Posted: Mon Jun 27, 2005 3:40 pm 
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I was just wondering if the EF I6 throttle body can be bored and if so to what size i've heard a mil or so isnt really worth worrying about, also if anybody knows how much cfm they flow at stock...

Cheers :wink:
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Posted: Mon Jun 27, 2005 4:04 pm 
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Why bother?

V8 guys are pulling 250RWKW with 65-70mm throttle bodies, NA.

You'll just lose throttle response and reduce air velocity.

 

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Posted: Mon Jun 27, 2005 4:08 pm 
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what if its for a forced induction setup or is the stock size big enough for the job.
(thats why i wanna know the flow bro)
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Posted: Mon Jun 27, 2005 4:29 pm 
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EFFairmontTurbo wrote:
what if its for a forced induction setup or is the stock size big enough for the job.
(thats why i wanna know the flow bro)


I cant quote on the ford product, but this will give you an idea (based on accufab mustang TB's)

65mm - 664CFM
70mm - 787CFM
75mm - 924CFM

What size are the EF/EL 4L TB's? 76mm?

 

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Posted: Mon Jun 27, 2005 4:46 pm 
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63 mm are ef throttle bodies you cna only bore them out to 68mm or else they will become to weak and collapse specially under boost
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Posted: Mon Jun 27, 2005 5:20 pm 
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Hmm. Wonder where I got 76mm from. LOL

I dont think the extra 3mm is worth it considering potential flow from the accufab figures I posted up.

 

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Posted: Mon Jun 27, 2005 5:36 pm 
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are ef/el 76mm i though they wher ethe same as ed
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Posted: Mon Jun 27, 2005 9:53 pm 
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Spider_GT wrote:
63 mm are ef throttle bodies you cna only bore them out to 68mm or else they will become to weak and collapse specially under boost



where did you get that from?

there are people on here that have them bored to 70mm
and i'll be doing the same soon too

 

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Posted: Mon Jun 27, 2005 10:02 pm 
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umm are you boosting? this is under boost remember
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Posted: Mon Jun 27, 2005 10:09 pm 
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Spider_GT wrote:
umm are you boosting? this is under boost remember



not boost yet.

for the turbo setup we are going to do something like what the skyline GTRs have

 

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