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  1. #1
    AKA: Larry lafjax's Avatar
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    Why you might need a blow off valve

    I just learned why. I've read all the pros and cons about using one and decided not to have one but here's what happened today while testing when I quickly completely let from 8120 full throttle, after trying to hold on. Clamps were all tight and the throttle body silicone coupler is bulging but not blown like this one out of the rude supercharger.
    I usually try to decelerate slowly which would prevent the blow out so I guess that's why I've gotten by without one for a long time. Now that I understand it I will just take it easier when I slow down.
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  2. #2
    meansvt00's Avatar
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    wow

    was the clamp still on the coupler or did it actually expand so much it was ripped out from under the clamp

  3. #3
    R88ory RXP's Avatar
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    I run 1. Even on the hose wen i rev up and then let off the amount of air that comes out from my Xcharger setup is considerable. This air would normaly back up and try to go back out the way it came thru the SC. Thus making the clutch do alot more work. Now obviosly the more boost you are running the more profound this is going to be. I cant see why if you have a good quality BOV that DON'T leak why not to run 1. R88

  4. #4

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    Quote Originally Posted by R88ory RXP View Post
    I run 1. Even on the hose wen i rev up and then let off the amount of air that comes out from my Xcharger setup is considerable. This air would normaly back up and try to go back out the way it came thru the SC. Thus making the clutch do alot more work. Now obviosly the more boost you are running the more profound this is going to be. I cant see why if you have a good quality BOV that DON'T leak why not to run 1. R88
    who makes a good blow off.

  5. #5
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    I've been running an adjustable unit I got off ebay for 2 years now, not one issue...I only had to adjust it slightly when I upgraded my SC wheel...

  6. #6
    AKA: Larry lafjax's Avatar
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    Quote Originally Posted by meansvt00 View Post
    wow

    was the clamp still on the coupler or did it actually expand so much it was ripped out from under the clamp
    It ripped it out from under the clamp...I made a run at 8120 and shut down hard, then I ran again and only hit 7540 so I knew something was wrong. Pulled the rear seat and there it was...strings blowing in the breeze. You know, I thought the webbing in those guys was nylon but in mine it is cotton fiber. Mine are silicon intakes brand.

    Jerry has a good one somewhere in the store. I would not recommend the cheap riva but I think they have a good one too.

    I'm just going to watch my deceleration and not do what I did. I was testing the oil seal on the drive shaft at the pto cover. My clamp came loose last time out and I lost a 2 quarts of oil in the hull. I tightened it back up and no more oil leak. I was just amazed at the pressure the boost and crankcase make when decelerating fast. It would probably blow the intake manifold at some point. I will not decelerate fast like that again, except in an emergency.

  7. #7

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  8. #8
    Golden Jet red fox's Avatar
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  9. #9
    Whats that whistling noise? jtskier11's Avatar
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    Quote Originally Posted by busa504 View Post
    who makes a good blow off.
    TurboXS, TiAL, HKS............

  10. #10
    AKA: Larry lafjax's Avatar
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    Quote Originally Posted by jtskier11 View Post
    TurboXS, TiAL, HKS............
    http://cgi.ebay.com/ebaymotors/BLUE-...Q5fAccessories

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