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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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I asked that question yesterday on the tech board. No responses. I will go bump it to the top. I will measure the center stack on my webers too, velocity stack to head.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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08-26-2004, 01:53 PM
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Registered
Join Date: Mar 2004
Location: City of Seattle, WA
Posts: 3,374
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cool. if somebody has a head laying around (and someone does) an estimate of port length from manifold mount to valve head would be useful too.
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Andy |
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08-26-2004, 04:08 PM
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DIY wrencher
Join Date: Apr 2015
Location: Vienna
Posts: 210
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Very old thread, but great discussion! Did you ever finish your ITB system using the GSXR TBs Jamie?
I am currently in research mode, and am also wondering about using the older (easy to separate and space apart) GSXR TBs as close as possible to the intake port, or using an adapter manifold in between, like this setup: 
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01-05-2022, 05:23 AM
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It's a 914 ...
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,698
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I believe Danst Engineering makes manifolds to adapt GSXR TBs to the 911 engine, in case you wind up going that route.
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01-05-2022, 12:38 PM
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Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
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I made GSXR ITB's for my T4 into bug project. They work OK.
 
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'74 Porsche 914, 3.0/6 '72 Porsche 914, 1.7, wife's summer DD '67 Bug, 2600cc T4,'67 Bus, 2.0 T1 Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend. Last edited by Mark Henry; 01-06-2022 at 06:02 PM.. |
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01-06-2022, 05:58 PM
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Registered
Join Date: Jul 2001
Location: mt. vernon Wa. USA
Posts: 8,703
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Jamie,
Some more info for you.... https://racehead.com.au/designing-performance/what-size-itb-should-i-use/ reegards, al
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[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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01-08-2022, 09:25 AM
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