reed valve or boost bottle

Discussion in 'Performance Mods' started by alpha, Jun 3, 2012.

  1. alpha

    alpha Member

    if its a question that has been asked sorry

    but whats better, im guessing the reed valve, but is there any purpose to doing both, im guessing not cause the reed valve prevents back wash of gas back into the carb.

  2. Perthbiker

    Perthbiker New Member

    My vote goes to the reed valve option. Not too many real 2- stroke bikes use a boost bottle....
    The reed valve prevents blow back of the inlet charge and improves performance by increasing the crankcase pressure to effect a better transfer of the charge to the combustion chamber.
  3. vermhot

    vermhot Member

    The only thing I ever heard of the boost bottle working on and really good was a Yamaha Banshie ! They had a dual carb set up that sucked and it helped keep them in sink !
  4. alpha

    alpha Member

    then why does everyone use boost bottles?

    and do our engines have the capabilty to handle the extra pressure of the reed valve
  5. Fabian

    Fabian Well-Known Member

    Boost bottles have questionable functionality.

    Just purchase a reed valve - plain and simple.
    Install the reed valve intake from Rock Solid Engines and be done with discussing things any further - it a design which works to perfection.
  6. alpha

    alpha Member

    still one question, can the crankcase gaskets and cyl base gaskets handle the extra pressure provided by the reed valve

    another question, what would it cost, or the out the door price shipped to cali from AUS anyone have any experance?
  7. Fabian

    Fabian Well-Known Member

    @ alpha

    My 2-stroke engine seems to have no problems at all coping with the extra pressure.

    Your second question is an easy answer - for all the benefits of the Rock Solid reed Valve Intake, you wouldn't even consider the cost.
    It doesn't matter how expensive the shipping, the part is "too good", not to have on your bike.

    With my experience of this item, even if shipping was $500, i would still lay down the cash.
  8. alpha

    alpha Member

    i understand the benifits, but not having 500 for shipping and useing my bike for transportation and not having 500 dollars for shipping.

    i know that was a strech for an example, but if i had that kind of cash i would be driving my v8 crown victoria around, not my bike or my honda....

    anyways, im convinced i need the part just interested in the shipping cost.

    Fabian if you have that kind of cash, buy a 250 ninja and put a thinner front tire and you will get 100mpg out of a motorcycle
  9. Fabian

    Fabian Well-Known Member

    even if it's $1000 for shipping, i would still lay down the cash for the reed valve intake system.

    Crikey, i have no exact idea but the last time i did the sums on all the parts and modifications and re-engineering on my motorised bicycle and trailers and touring gear etc, it came out to about $8,000, and i haven't added the GPS linked EFI kit, so the computer can select different injection and ignition maps for different parts of the route ;-)
  10. alpha

    alpha Member

    0_o ..............-_- what ever your doing for a living and what ever your getting paid, i wanna do, US job market sucks in CALI and people are cheap, im lucky enough to have bartered to get all my engines, i couldnt buy a kit right off, i may have spent 200 on parts over the past 6 months.

    so a 60 dollar reed valve i have to budget for!
  11. Fabian

    Fabian Well-Known Member

    It needs to be mentioned that the money i've spent on my bike has been over 2 and a bit years.
    The individual items may not be expensive but when sitting down and adding up the $65 here, the $30 there, this $120 modification, that $70 modification etc, etc, it becomes a frightening figure.
    I'm aghast at how much money i've spent on a push bike but it's such an enjoyable and addictive hobby that's made all the more special when riding past a group of cyclists painfully struggling their guts out on some hill climb, whilst you sail past; having an almost unhealthy level of joy, not to mention the ear to ear smile on your face with 90 lbs hanging off the back of your bike as you give them positive encouragement to "keep on pushing" for the next 15 miles of hill climb are going to be he!!