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  1. #1

    R&D Manifold Extender for o2 sensor

    Does anybody know if this product works with my 08 RXT which has a Riva Waterbox w/ Thru Hull Exhaust? I want to get into modding more, but i dont want to remove my exhaust manifold to try and tap it and risk breaking the water jacket in the process.

    http://www.4-tecperformance.com/inde...roducts_id=882


  2. #2
    Having Fun jp1300r's Avatar
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    Quote Originally Posted by radeon View Post
    Does anybody know if this product works with my 08 RXT which has a Riva Waterbox w/ Thru Hull Exhaust? I want to get into modding more, but i dont want to remove my exhaust manifold to try and tap it and risk breaking the water jacket in the process.

    http://www.4-tecperformance.com/inde...roducts_id=882
    You can take that extender and throw it as far as you can from your ski. Drill and tap manifold. As Reid would say PERIOD.

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  4. #3
    Why?

  5. #4
    Moderator Snoman's Avatar
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    Quote Originally Posted by radeon View Post
    Why?
    There has been many many many topics on this subject,if you use the search feature you will see that this piece is exactly that,a piece....

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  7. #5
    Scotty's Avatar
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    If you did use one I think it will be a tough install with the Riva box exit pipe and hull exit nipple being close as it is.

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    Quote Originally Posted by radeon View Post
    Does anybody know if this product works with my 08 RXT which has a Riva Waterbox w/ Thru Hull Exhaust? I want to get into modding more, but i dont want to remove my exhaust manifold to try and tap it and risk breaking the water jacket in the process.

    http://www.4-tecperformance.com/inde...roducts_id=882
    Seriously, this is one PITA part to fit properly. I had one and i could never really get it to seal properly. Go with drilling and tapping the manifold, way better mod and guaranteed to work properly. The extender pushes the exhaust back a couple of inches, so your going to need to adapt your waterbox position and your through hull assembly.

  9. #7
    boost junkie skidoochris's Avatar
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    the extender seems like easy a bolt in piece
    but IMO it is not worth the problems it makes
    find the thread on tapping the manifold and do it right the first time

  10. #8
    Can I buy ANY 4tec SC exhaust manifold and it fits? Is there a gasket that needs changing as well? I'd like to buy a 2nd exhaust manifold and have it tapped and ready to install to minimize any downtime ...

  11. #9

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    radeon--I don't understand the bad vibs on the extender. I picked up 60 to 80 RPMs on my 2007 RXT with a tapped 2008 X boat exhaust manifold with 2008 X boat waterbox using the extender. The X boat exhaust manifolds as I understand it have a little more meat in the drilled area so stay with that model year.

  12. #10
    Tiny's Avatar
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    If you really want an Extender, I have a used one that I will sell for $75 and it comes with the extra clamp....I bought it used froma board member and never used it, I had my manifold drilled and tapped instead...

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