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Offline firemanjim

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BOV question
« on: December 30, 2006, 08:26:04 PM »
Jon,John,Joe,etc are you guys running BOV's on your turbo systems? And if so recommendations?
Building new set-up this year and want all pieces on hand before I start.
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Bonneville 2001,2002,2003,2004,and NO stinking 2005,DLRA 2006, next?
Well,sure can't complain about 2008--6 records over 200 and 5 hats from Bonneville,Bubs, and El Mirage for the team!

Offline Dakin Engineering

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Re: BOV question
« Reply #1 on: December 31, 2006, 05:22:20 PM »
Jim,
  Are you running draw-thru or blow-thru?

Sam
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Offline hawkwind

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Re: BOV question
« Reply #2 on: December 31, 2006, 06:10:44 PM »
Jim Im using a bov simply as a safety precaution and I like the whooosh sound :-D

bov's and drawthrough  ,place a smalll pilot  light at the exit to the bov and it can also serve as a portable BBQ  :evil:
Gary
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slower than most

Offline firemanjim

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Re: BOV question
« Reply #3 on: January 01, 2007, 01:47:55 AM »
Blow through.
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Bonneville 2001,2002,2003,2004,and NO stinking 2005,DLRA 2006, next?
Well,sure can't complain about 2008--6 records over 200 and 5 hats from Bonneville,Bubs, and El Mirage for the team!

landracing

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Re: BOV question
« Reply #4 on: January 01, 2007, 01:58:41 AM »
No on the blow off valve here.

jon
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Offline Dakin Engineering

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Re: BOV question
« Reply #5 on: January 04, 2007, 07:15:49 PM »
Jim,
  First, let me direct you to my reference "Motorcycle Turbocharging, Supercharging & Nitrous Oxide" by Joe Haile (Whitehorse Press).
  He states BOV's are needed (on blow thru systems) when the throttle is snapped shut. Keeps the carb from finding various places to leak when the pressure spikes.

  I run draw thru and no BOV.

Sam
 
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Offline firemanjim

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Re: BOV question
« Reply #6 on: January 04, 2007, 07:40:21 PM »
Well, I sure don't see me snapping the throttle shut at any time at Bonneville so will have to do further investigation. Thanks all.
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Bonneville 2001,2002,2003,2004,and NO stinking 2005,DLRA 2006, next?
Well,sure can't complain about 2008--6 records over 200 and 5 hats from Bonneville,Bubs, and El Mirage for the team!

Offline Sumner

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Re: BOV question
« Reply #7 on: January 04, 2007, 11:44:48 PM »
Quote from: firemanjim on January 04, 2007, 07:40:21 PM
Well, I sure don't see me snapping the throttle shut at any time at Bonneville so will have to do further investigation. Thanks all.

The BOV is there mainly to protect the turbo when the throttle is snapped shut.  It wouldn't hurt you, but I agree with the others that it isn't needed at b'ville.

c ya,

Sum
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Offline 1212FBGS

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Re: BOV question
« Reply #8 on: January 22, 2007, 02:51:03 AM »
bov's are used in drag and roadracing to help controll boost as the waist gate doesnt and cant react fast enough. I dont run bov's on the twin engined liner. but we do run one on randy's 500. couldnt get the waist gate opened faster than we could blow a hole in a piston. it solved the problem. if you want to controll boost do it on the cold side with a bov. a bov is the most accurate way to controll boost
my sugestion...no bov
kent
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