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Thread: 300ex - Wiseco back to Honda piston

  1. 08-14-2002, 08:21 AM #1
    not2hi
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    300ex - Wiseco back to Honda piston

    i'm replacing the piston and rings in a 98 300ex. Currently it has a Wiseco (stock bore) and rings (mukini carb, cam, FMF mega 2, no limit CDI).

    I'm seriously considering going back to a Honda piston (.025 over) and rings. I'm tired of mixing premium pump gas and octane boost and locating race fuel has proved to be a nightmare. It would be so nice to just run down to the gas station and fill er up, not to mention the times when we couldn't ride because i forgot to buy boost.

    My question is how much will we really lose by going back to a Honda piston? We're not racing, just riding trails and on backyard type tracks.

    THX
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    Worlds most expensive 98 300EX, Wiseco 11:1 .040 over, mild cam, Dial-a-jet, Uni Filter, FMF MegaMax II, no limit CDI box, "holy" airbox, 400ex a-arms/shocks, Perma-Cool oil cooler
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  2. 08-14-2002, 08:48 AM #2
    Dave400ex
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    The Piston doesn`t matter it`s what Compression you run. Get a JE if they make them for 300ex`s.
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  3. 08-14-2002, 08:59 AM #3
    not2hi
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    any other pistons makers for the 300ex?

    well, and correct me if i'm wrong...Wiseco is the only one making a piston for the 300ex, and its 11:1 comp. JE or Ross do not make pistons for the 300EX. A stock Honda is 8.9:1 comp.
    ~~~~~~~~~~~~~~~~~~~~~~~
    Worlds most expensive 98 300EX, Wiseco 11:1 .040 over, mild cam, Dial-a-jet, Uni Filter, FMF MegaMax II, no limit CDI box, "holy" airbox, 400ex a-arms/shocks, Perma-Cool oil cooler
    ~~~~~~~~~~~~~~~~~~~~~~~
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  4. 08-14-2002, 09:14 AM #4
    Dave400ex
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    Email Sparks and ask them what kind of Pistons they use in the 300ex.
    Thanks for the Support: Maier, Moto-Xperts, Rekluse, Teixeira Tech, Fox Racing Shox, BK Performance, DWT, Rath Racing, Quadtech, Streamline Brakes, Precision Racing Products, PowerMadd, Spider Grips, ASV Inventions, IMS Products, CV4, UNI.
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  5. 08-14-2002, 09:50 AM #5
    not2hi
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    PRO-X pistons

    anyone familiar with Pro-X pistons that Dennis Kirk sells? what's the comp on those?

    Sparks didn't have much to say to help.
    ~~~~~~~~~~~~~~~~~~~~~~~
    Worlds most expensive 98 300EX, Wiseco 11:1 .040 over, mild cam, Dial-a-jet, Uni Filter, FMF MegaMax II, no limit CDI box, "holy" airbox, 400ex a-arms/shocks, Perma-Cool oil cooler
    ~~~~~~~~~~~~~~~~~~~~~~~
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  6. 08-14-2002, 12:51 PM #6
    Dave400ex
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    Well I have heard very good things about Pro-X. You should be able to choose your Compression. Just call a Engine Builder up and ask. I`m not sure what Pistons Duncan runs.
    Thanks for the Support: Maier, Moto-Xperts, Rekluse, Teixeira Tech, Fox Racing Shox, BK Performance, DWT, Rath Racing, Quadtech, Streamline Brakes, Precision Racing Products, PowerMadd, Spider Grips, ASV Inventions, IMS Products, CV4, UNI.
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  7. 08-14-2002, 02:24 PM #7
    two_baaalls
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    hmmm, well you dont need race fuel at 11:1!
    2000 440EX GT Thunder 440 and Cam, Black Diamond oversized valves, Edelbrock Qwiksilver Bored for 440, Elka's (front) Mac Daddy in back, +1,+.5 Houser A-arms, Black (not so shiny anymore, dont get it!) Maier

    LSR Axle, Big GUN, Duncan +2 steering stem, Pro Tapers, Magura Hydraulic Clutch, Cycra Pro-bends, AC Nerfs, Douglas Red Labels, XC's, CEET Seat Cover.
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  8. 08-14-2002, 02:40 PM #8
    Dave400ex
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    It would be smart to at least mix the Gas. Half Race, Half Pump.
    Last edited by Dave400ex; 08-14-2002 at 03:13 PM.
    Thanks for the Support: Maier, Moto-Xperts, Rekluse, Teixeira Tech, Fox Racing Shox, BK Performance, DWT, Rath Racing, Quadtech, Streamline Brakes, Precision Racing Products, PowerMadd, Spider Grips, ASV Inventions, IMS Products, CV4, UNI.
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  9. 08-14-2002, 03:06 PM #9
    two_baaalls
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    You mean mix not miss..

    You can tell when your bike is pinging caused by lack of octane. You will know. Ask a pro. Call Mickey Dunlap at 4-stroke tech. GT Thunder, Sparks, anyone. They'll all tell you the same, pump gas is fine for 11:1.

    Just have fun. Thats the most important thing.
    2000 440EX GT Thunder 440 and Cam, Black Diamond oversized valves, Edelbrock Qwiksilver Bored for 440, Elka's (front) Mac Daddy in back, +1,+.5 Houser A-arms, Black (not so shiny anymore, dont get it!) Maier

    LSR Axle, Big GUN, Duncan +2 steering stem, Pro Tapers, Magura Hydraulic Clutch, Cycra Pro-bends, AC Nerfs, Douglas Red Labels, XC's, CEET Seat Cover.
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