Engine Braking? (Jake-brake)

Discussion in 'General Questions' started by Rayde, Mar 30, 2011.

  1. Rayde

    Rayde New Member

    Like on semi's, sort of. My kit is still in the mail, so i'll ask here:

    If you're cruising around, and hold the kill switch, but keep the clutch engaged... Will that slow the bike much, if at all noticeably? Is that hard on the components? Seems like it may waste a bit of gas, by just flowing through the head, and out the exhaust.

    No, i'm not counting on this being my rear brake, lol, just curious, more or less.

  2. ibdennyak

    ibdennyak Guest

    Yup, noticeably,mmmmh tensioner maybe, some. You're right, ya still need a back brake. :grin5:
  3. Skyliner70cc

    Skyliner70cc Active Member

    not exactly considered jake breaking but doing so may slow you down a bit but with risk of fuel pooling in crankcase.
  4. wzuccarello

    wzuccarello New Member

    I remain skeptical about that. Please explain how that could cause pooling in crankcase.
  5. Wheres my dog

    Wheres my dog Banned

    In using a dead engine to slow down the bike... the engine is still turning over and pumping fuel with no spark... not a good thing for a 2 stroke engine

    Brakes are much more reliable and easier to fix!
  6. sure its called compression braking. but leting off the throttle will pretty much acheive the same thing and you wont fill the exhaust with raw fuel. if you cut the power back on at the bottom of the hill youll probrobly get a big ol pop out the muffler and that could be bad
  7. ibdennyak

    ibdennyak Guest

    Heh, you're right dude. Didn't think of the fuel in the exhaust. Should have too,when I was a kid I discovered I could make the exhaust pop on my 59 Ford by doing that.....until I blew the muffler completely off. :poop:
  8. wzuccarello

    wzuccarello New Member

    I don't believe there will be any "pooling" in the crankcase. Nothing in the cranckcase will change during comp release .The crankcase is just a pump, It don't know if what it pumped was compressed and fired or not. Nothing can pool in there while it's pumping.

    Nothing will "pool" in the crankcase while It's pumping during jakebraking.

    If you close the throttle while jakebraking, there will be no popping in the exhaust, and a definite increase in braking, over just closing the throttle only.

    This is what my experiences over many years has led me to believe


  9. Skyliner70cc

    Skyliner70cc Active Member

    more unburnt/unignited fuel blowby past the piston rings. blowby...all engines have it.