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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Fri May 12, 2017 5:06 am Post subject: Recirculation valve/ BOV which way ? |
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As I am running a 944 turbo I use an axternal recirculation valve/ BOV (from Forge).
On the internet I see two differant way's to mount it (boost in/out), is this the correct way or doesn't it matter ?
_________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Sat May 13, 2017 1:34 am Post subject: |
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Don't need a dump valve. Run a closed system _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Sat May 13, 2017 3:46 pm Post subject: |
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The original turbo also has a built in recirculation valve/ BOV. Because the 944 turbo doesn't I use the Forge external one. _________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Back to top |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Sat May 13, 2017 6:51 pm Post subject: |
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Pressure in from below. Pressure out at the side. Vacuum/boost signal above. Forge say do not reverse the flow. Is that a pic of your forge BOV ?
Try it with and without BOV. They aren't always needed. _________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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Dutch924-racer
Joined: 23 Jul 2007 Posts: 1077 Location: The Netherlands
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Posted: Sat May 13, 2017 7:12 pm Post subject: |
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ok, thanks so the pictue is telling it wrong
The picture above is not my recirculation valve but it looks simular, this is the Forge I use:
_________________ 937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Back to top |
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