Home Forums Tech Talk Shifter exhaust questions

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    • #36917
      Scott Boito

      Hi guys,

      I have a few questions about my RLV R4 pipes that I hope someone can help answer.

      1. What metal are these made from?  I have a crack that needs to be welded and my welding friend wants to know so he can adjust the welder appropriately.

      2. How does everyone change the angle of the stinger on these?  My current stock R4s both have straight exits that interfere with the kart stacker.  So I’d like to angle them to the side and downward a bit like I’ve seen on other karts.  Is this something easily accomplished with a torch?

      Thank you in advance.


    • #36983
      Ted Hamilton

      If you’re already repairing a crack, I’d just cut out a little wedge, bend the stinger over and weld the new seam together there too.

      2014 Praga Dragon / IAME KA-100

    • #36999
      Scott Boito

      Thanks for the suggestion, Ted.  Is that how people modify them?  And does it affect the exhaust flow/RPM/HP any?

      So nothing special about the alloy used in these?

    • #37088
      Greg Lindahl

      Contact RLV for repair and change to angled stinger.

    • #39971
      Scott Boito

      Got the 20 degree angled stingers from RLV ($20/each) and had a friend redo everything and weld the crack.  Worked like a charm.  Got them back yesterday and they will work perfectly!  Thanks for the helpful suggestions.

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