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Underbody braces, turbos and more!

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 Post subject: CFM flow of a 1.0
PostPosted: Tue May 31, 2005 3:37 pm 
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Sparky
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Joined: Tue Mar 15, 2005 4:05 pm
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Location: Beautifull North Carolina
Does anyone know what the Stock 1.0 CFM flow is? also when you Turbo it what increase do you see in flow? Tryin to figure out the flow needed for my set up with 5/10/15/20 lb boost.

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 Post subject: flow
PostPosted: Thu Jun 02, 2005 9:14 pm 
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Location: MISSISSIPPI
about 90 SCFM at 7000 rpm. & 80% VE . At 15 PSI of boost you would flow about 2 times as much air. 200 SCFM.


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 Post subject: Re: flow
PostPosted: Thu Jun 02, 2005 9:18 pm 
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Sparky
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larry griffith wrote:
about 90 SCFM at 7000 rpm. & 80% VE . At 15 PSI of boost you would flow about 2 times as much air. 200 SCFM.


Thank you VM and Karma + for you. So I guess a 350 CFM Carb would be a little much even at 18lb boost.

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 Post subject: boost
PostPosted: Fri Jun 03, 2005 7:22 am 
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Location: MISSISSIPPI
if it is a draw through set up .then you would need an oversize carb . a 350 would be about right . on a blow through set up the air is compressed then pushed through the carb so a stock carb will flow fine . all you have to do is enrich the fuel to keep up with the air flow.


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 Post subject:
PostPosted: Fri Jun 03, 2005 11:09 am 
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Location: seattle
hey larry, how did you get that figure?? not aurguing mind you ,just want to know. :) thanks

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 Post subject: air flow
PostPosted: Sun Jun 05, 2005 1:36 pm 
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Location: MISSISSIPPI
1/2C.I.D. x max RPM
------------------------ x V.E. (80%) =CFM
1728
30X7000/1728 X.80= 97 CFM

Not shure if this will look right when i upload it.

but to tell the truth i pulled the no. out of the air. after a few zillion times of going over the same stuff you get a fair idea of what will work. one thing to watch . smaller carbs are rated at 3 in hg drop. so flow rates are not the same as say a 4 brl carb. I've never taken the time to look up how a fuel injected system is rated?


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 Post subject:
PostPosted: Sun Jun 05, 2005 2:14 pm 
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why is only 1/2 the CID used??

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 Post subject: 1/2
PostPosted: Sun Jun 05, 2005 2:27 pm 
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Location: MISSISSIPPI
the motor only takes in air every other stroke or rev. if it were a 2 stroke motor then it would intake on every stroke.


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 Post subject:
PostPosted: Mon Jun 06, 2005 3:25 am 
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Location: Abbotsford, BC, Canada
90-97cfm eh... lol. My computer has more airflow then my car.... approx 400 cfm... :shock:

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 Post subject:
PostPosted: Thu Dec 08, 2005 11:05 pm 
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Joined: Mon Sep 12, 2005 9:17 pm
Posts: 117
Location: Bradenton
Just to say every turbo flow's a differnet CFM at the same boost level. Meaning a T25 will flow a different CFM at 10psi then a TD40L at 10psi.

Don't know if you are going to use a different turbo or not but just thought I would give a slight heads up.

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