Manifold or Spacer?

Discussion in 'Tech Area' started by Chris P, Jan 13, 2020 at 9:43 PM.

  1. Chris P

    Chris P New Member

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    Hey everybody, I just finished the install of the Piranha 90cc kit with the 19mm carb from TBolt USA and I am using the tb parts rotating spacer, in my z50 k2 and started her up. As you can hear in the video, I have what I describe as a chirp coming from the area of the base of the manifold, which I believe is an intake leak.

    67129B38-5DE1-493C-B420-95B9BC8493B7.jpeg

    I am not sure if the spacer or the manifold itself is the culprit. Anybody have any suggestions to to stop the leak?






    Chris P

    ‘71 Z50 K2
     
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  3. OLD CT

    OLD CT Well-Known Member

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    I bought one a long time ago and had the same issue. I would get rid of the spacer. Buy a intake that clears everything if the spacer is a must.
     
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  4. Chris P

    Chris P New Member

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    Thanks Old CT. I was thinking that might be my first item to swap out. I’ll give it a go and report back.
     
  5. kirrbby

    kirrbby Well-Known Member

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    dirtbkr188 often recommends putting a thin layer of heavy grease on both sides of manifold gaskets to cure leaks.
     
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  6. dirtbkr188

    dirtbkr188 Active Member

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    You might also want to double check and make sure the spacer is seating squarely on the head, I used one after rebuilding an XR/CRF70 engine for a friend, and had to contour the front side of the spacer to seat it on the head, as seen in the pic below.

    kxNPX4.jpg
     
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  7. Chris P

    Chris P New Member

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    Thanks for the info. Yeah, I read the same thing and applied the very thin layer of grease.
     
  8. Chris P

    Chris P New Member

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    OLD CT That did the trick! I got rid of the rotating spacer and was able to squeeze the carb and manifold assembly in there and she runs real nice like! Thanks for everyone's input!

     

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