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Registered
Join Date: Jan 2006
Location: Florida
Posts: 606
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Jenvey ITB's and Airbox Anyone?
Hello,
Has anyone fashioned or found a solution for an airbox for the Jenvey individual throttle bodies? Other than the usual bolt on a GT3 intake complication on top. I love the way they sound but for a long drive they are a bit loud. An airbox should dampen the intake noise quite a bit while still retaining the trumpets. I look forward to hearing some suggestions. Regards, Steve 
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Formerly owned 70 911S, 73 911S. Wish I had pickled them! had a 75 930 #17. now in museum in Canada. 81 930 , 84 911 Cpe. 74 Carrera cpe. , 72 BMW 3.0 cs, 91 M3, memory foggy on some of the rest. Current toy car 86 911 cpe. |
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06-21-2021, 10:18 AM
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Registered
Join Date: Sep 2020
Posts: 409
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Following
Sent from my iPhone using Tapatalk |
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06-21-2021, 10:22 AM
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nothing to see here
Join Date: Jun 2007
Location: UK
Posts: 192
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I have ITBs with ITG filters on a pretty extreme 3.5 twin plug engine and induction noise is surprisingly low. Exhaust is quite quiet because of a rather large dp motorsport muffler.
Short answer is change your muffler. |
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06-21-2021, 12:06 PM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,887
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Fredie,
The best solution is to put 996 GT3 intakes on top of the ITBs. I am pretty sure that Rothsport has done this Jenvey ITBs. It would look like this:  The ability to do this requires an ECU that could control a flapper solenoid. Well, I guess you could use an RPM switch too. This setup gives you better midrange torque and supposedly does not hurt top end power.
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Scott Winders PCA GT3 #3 2021 & 2022 PCA GT3 National Champion 2021 & 2022 PCA West Coast Series GT3 Champion |
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06-21-2021, 12:18 PM
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Registered
Join Date: Jan 2006
Location: Florida
Posts: 606
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Agreed on the muffler. It is a bit loud as well.
I see Jenvey offers an air box to fit the base plates I have. I was hoping someone may have tried them with a cone filter retaining the velocity stacks/trumpets inside. Or other concepts similar as such. I like the idea of the long runners and etc.. of GT3 intake but it seems like a lot of fiddling and extra weight for perhaps minimal gain. My engine has plenty of low mid and top charge.
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Formerly owned 70 911S, 73 911S. Wish I had pickled them! had a 75 930 #17. now in museum in Canada. 81 930 , 84 911 Cpe. 74 Carrera cpe. , 72 BMW 3.0 cs, 91 M3, memory foggy on some of the rest. Current toy car 86 911 cpe. |
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06-21-2021, 01:40 PM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,887
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Quote:
__________________
Scott Winders PCA GT3 #3 2021 & 2022 PCA GT3 National Champion 2021 & 2022 PCA West Coast Series GT3 Champion |
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06-21-2021, 02:57 PM
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Registered
Join Date: Jan 2006
Location: Florida
Posts: 606
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I did not mean to shoot your ideas down. It is a proven solution. I was just wanting to find a different solution.
I appreciate your input. Regards Steve
__________________
Formerly owned 70 911S, 73 911S. Wish I had pickled them! had a 75 930 #17. now in museum in Canada. 81 930 , 84 911 Cpe. 74 Carrera cpe. , 72 BMW 3.0 cs, 91 M3, memory foggy on some of the rest. Current toy car 86 911 cpe. |
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06-21-2021, 04:26 PM
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