650-701 Build

Discussion in 'Tech Discussion' started by ScottyRocker, July 13, 2009.

  1. ScottyRocker

    ScottyRocker Member

    Hey guys, can anyone tell me if 6m6 intake and exhaust manifolds bolt up to 61x Engine and also will 650 reeds fit 61x
    Cheers
    Scotty
  2. L8N

    L8N Member

    The intake side (cases) is completely different, the exhaust is similar, however, the 61x has much larger exhaust ports.
  3. Redtro

    Redtro Member

    er......a 62T intake is completely different

    the clymer Yamaha book says they (6m6 & 61X) use the same : a type II
    used on the 650 and the 701.


    I think the reeds are bigger on 61X than a 6m6
    ...not sure if the reed cage plate is different...

    ...match your bpipe manifold to the size of your 61X cylinder exhaust ports for better flow
  4. L8N

    L8N Member

    Oops, yeah that's it, what Redtro said :p
  5. lokey

    lokey New Member

    here's a 6m6 exhaust manifold with a 61x gasket, the left side shows how much smaller the ports are
    [​IMG]