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Author Topic: Pair Valve crankcase evacuation  (Read 19755 times)

Offline Cookie

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Re: Pair Valve crankcase evacuation
« Reply #25 on: January 05, 2010, 02:34:18 PM »
Quote from: RansomT on January 05, 2010, 11:12:35 AM
All of Bob's turn key Busa Packages come with the pair valve as a Crankcase pump.

Apparently it is starting to appear that it is more prevalent than expected.
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Offline Commuta_Busa

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Re: Pair Valve crankcase evacuation
« Reply #26 on: January 07, 2010, 08:49:04 AM »
I ran a seperate elect vac pump last season, no problems at all.
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Offline Bim28

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Re: Pair Valve crankcase evacuation
« Reply #27 on: January 15, 2010, 08:50:03 AM »
Quote from: Commuta_Busa on January 07, 2010, 08:49:04 AM
I ran a seperate elect vac pump last season, no problems at all.


What kind do you use?  I'm going to a sidewinder and I'm taking my pair valve off. I've ran it for a few years now.  I ride on the street as much as possible.  I go to the track almost every weekend.  I never had any issue with mine.  Cookie is right.  It does make more power.  I'm by no means a professional.  This is just what worked for me.
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Offline spdingtkts

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Re: Pair Valve crankcase evacuation
« Reply #28 on: January 15, 2010, 11:17:02 AM »
I have read having some vacuum evac the crankcase on a turbo motor is good as it helps pull the oil out the turbo and back into the pan.

The benefit of this is that it keeps oil from leaking past the seals and it should keep the bearing area slightly cooler.
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Offline wildphil69

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Re: Pair Valve crankcase evacuation
« Reply #29 on: February 12, 2010, 04:00:53 PM »
What if you just run the 4 hoses that would normally run to the exhaust to atmosphere? it would still work the same right?
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Offline Cookie

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Re: Pair Valve crankcase evacuation
« Reply #30 on: February 13, 2010, 01:30:03 AM »
Quote from: wildphil69 on February 12, 2010, 04:00:53 PM
What if you just run the 4 hoses that would normally run to the exhaust to atmosphere? it would still work the same right?
Why would you want to go to that extent when it is laid out so simply?? :shock:
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Offline wildphil69

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Re: Pair Valve crankcase evacuation
« Reply #31 on: February 13, 2010, 10:52:02 AM »
Because i welded my pair valve holes  :lol: I think im just going to get an electric pump i had it hooked up last night and put a vac guage on the crankcase and it did nothing
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Offline Cookie

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Re: Pair Valve crankcase evacuation
« Reply #32 on: February 13, 2010, 01:47:49 PM »
Quote from: wildphil69 on February 13, 2010, 10:52:02 AM
Because i welded my pair valve holes
:lol:  Oh crap. Never encountered that where someone welded tight the access holes that wants to re-access them!  :shock:
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Offline wildphil69

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Re: Pair Valve crankcase evacuation
« Reply #33 on: February 13, 2010, 09:08:06 PM »
im not saying i want to reaccess them i want to keep them welded it took me 6 hours to get them how i wanted haha i just want some crankcase evac
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Offline isiahstites

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Re: Pair Valve crankcase evacuation
« Reply #34 on: February 15, 2010, 09:34:00 PM »
I used my pair valve for this on my LSR bike. Saw 2 hp on the dyno, my bike runs two ways, idle on the line waiting to run and WO anytime else. I have made a bunch of dyno passes and even more WO passes for miles and miles at El Mirage and Bonneville. No problems yet!
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