Greddy type s not opening

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1WheelWonder
Posts: 961
Joined: Wed Jan 19, 2005 11:16 am
Car: 1991 Nissan 240sx

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Hey guys, as of last night I am now offically KAT powered at a blistering 4psi, for now. My problem is that my bov is not opening at all, it's located on my hot pipe and it's vacuum source is coming from the fuel pressure regulator vacuum line which is hooked to the top nipple on my type s. Should I plug the bottom nipple up or is it ok open like it is. I also tightened the adjuster on it a little bit. Any help will be greatly appreciated my fellow KAT friends.


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Jookmasta
Posts: 5172
Joined: Fri Apr 18, 2003 3:26 pm

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well whats ur vac reading at? that will most likely determine whether or not its the bov or just that ur vac is weak. i know my vac is weak so i had the same issue as u. to fix this, u need to open up the type s and remove the smaller of the two springs. this should fix ur problem..............

1WheelWonder
Posts: 961
Joined: Wed Jan 19, 2005 11:16 am
Car: 1991 Nissan 240sx

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Thanks Jookmasta, my va is sitting at about 17 or 18. I will remove that spring and see if it helps.

1WheelWonder
Posts: 961
Joined: Wed Jan 19, 2005 11:16 am
Car: 1991 Nissan 240sx

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Removing the spring did the trick, thanks.

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Jookmasta
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Joined: Fri Apr 18, 2003 3:26 pm

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glad to help. maybe my vac isnt as bad as i think? lol......................

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95_240sx
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Joined: Sun Aug 18, 2002 7:24 pm
Car: My baby (car)
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Thats low vacuum guys!

When I was on the dyno this weekend tuning my car, my vacuum was around 21-22 inches at idle and decel. Weird

Rick

nissanfanatic
Posts: 1314
Joined: Mon Nov 01, 2004 8:41 pm
Car: 1992 Nissan 240sx SE
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Yea def low vacuum. It should never read below 20" at idle.

Decel mine will run to like 26".

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Red-KAT
Posts: 658
Joined: Sat Feb 28, 2004 6:05 pm
Car: 1995 240sx-se ka24det
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Whats the conversion from inch to psi for air?

I run -10ish psi

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Red-KAT
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Joined: Sat Feb 28, 2004 6:05 pm
Car: 1995 240sx-se ka24det
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http://www.anver.com/document/....html

NM -10 psi is -20 in-HG

I also hit -12psi = -26 in-HG on decel.

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Jookmasta
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Joined: Fri Apr 18, 2003 3:26 pm

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u know i was looking for that. dang that means when i was NA, my vac was perfect and now i hover around -6 psi or so. stupid egr pipe..............


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