Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

Recirculation valve/ BOV which way ?

 
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech.
View previous topic :: View next topic  
Author Message
Dutch924-racer  



Joined: 23 Jul 2007
Posts: 1076
Location: The Netherlands

PostPosted: Fri May 12, 2017 5:06 am    Post subject: Recirculation valve/ BOV which way ? Reply with quote

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
Back to top
View user's profile Send private message
Carrera RSR  



Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK

PostPosted: Sat May 13, 2017 1:34 am    Post subject: Reply with quote

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
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
Back to top
View user's profile Send private message
Dutch924-racer  



Joined: 23 Jul 2007
Posts: 1076
Location: The Netherlands

PostPosted: Sat May 13, 2017 3:46 pm    Post subject: Reply with quote

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
Back to top
View user's profile Send private message
Carrera RSR  



Joined: 08 Jan 2010
Posts: 2309
Location: Somerset, UK

PostPosted: Sat May 13, 2017 6:51 pm    Post subject: Reply with quote

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
Back to top
View user's profile Send private message
Dutch924-racer  



Joined: 23 Jul 2007
Posts: 1076
Location: The Netherlands

PostPosted: Sat May 13, 2017 7:12 pm    Post subject: Reply with quote

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
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech. All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group