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  1. #1

    Are air/fuel guages possible on our two-strokes?

    Well, are they? Was brainstorming earlier about how "fun" the process is of running, plug chop, and checking piston wash. Very effective, but just rying to take it a step further. Maybe I'm being too particular, but wouldn't it maximize performance and reliability to have one of these guages to maintain proper mixture and eliminate lean spots in the rpm range? Also maybe could prevent a lean seizure from various causes by spotting the lean condition before it's too late.

    I'm somewhat familiar with these on a four stroke, but is it even possible on our two-stroke animals with oil in the mix? Seems simple to install an O2 sensor, but then maybe water would effect it too. Aaahh just thinking out loud. Any thoughts? This would be a super sweet mod, and an awesome tool to perfect the tuning throughout the rpm range. There must be a reason why we can't use them because someone already would have, so tell me why.

    Something like this... http://www.egauges.com/vdo_ind.asp?T...ed&PN=CYB-7009


  2. #2
    Hell Bent or Heaven Sent? Bent's Avatar
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    There's A Bug In Your Post....

  3. #3
    100 MILES OF HEAVEN AND I AM SMACK IN THE MIDDLE KEYZBUM's Avatar
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    I Think What You Want Are Exhaust Gas Temp Analyzer.
    They Used To Make Them With Three Probes That Went Into Each Exh. Man.
    Thats The Ultimate Tuning Tool There

  4. #4
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    A/F Gages have to have the O2 Sensor heated before they work.They use the 3 or 4 wire,can't remember now)O2 sensor (that has a wire for heating them up) I would think with water running aross them they would stay too cool.Also if they would work ,you'd have to run dual or triple pipes so you could read each cyl seperately to know what each carb is doing.

  5. #5
    Moderator beerdart's Avatar
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    EGT and RPM Thats all you need.

  6. #6
    Beerdart I've seen how you've got thermocouples on the mag and pto cylinders, does that provide similar information as EGT? I've come across kits like this...
    http://www.egauges.com/vdo_ind.asp?T...te&PN=ATM-4344

    They have a probe that you'd need need to install by drill and tap. Where would it be ideal for that probe? I'm not so sure it would work though, because it wouldn't really represent the differences in temps between cylinders. Really with the water flowing through the exhaust and whatnot, I don't see how it would work. Just bouncing ideas around though.

    If that kind of guage don't work, then how can you get an EGT reading of each cylinder that can be put to use in tuning? Considering the water passages and this being of the two-stroke variety, I'm stumped.

  7. #7
    Water Bum Rodneyae's Avatar
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    The oil in two stroke exhaust would kill the sensors in no time. So you would be replacing them all the time. You would also have to do it before the water enters the pipe.

  8. #8
    Go carts racers have some cool egt setups that read multiple cylinders search for those

  9. #9

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    Here's what ya want.

    Hot TachIII http://www.exhaustgas.com/ProductDet...asketID=&RepID=


    Otherwise find a used Avenger II or III

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