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Thread: new engine

  1. #1
    RC Racer
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    new engine

    what's a good drop in for the original 4tec , don't want a 2.5 but .15 or .18 will do under 160.00
    never to old to have fun. cured of track phobia

  2. #2
    RC Qualifier
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    O.S. engines work good.
    Mr. Pibb+Red Vines=Crazy Delicious

  3. #3
    RC Champion
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    Ya OS engines are really good, nice and reliable.
    Nitro Rustler decked in carbon fiber and blue anodized aluminum

    A Nitro 4-tec waiting for it's turn

  4. #4
    RC Racer
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    new engine

    yea i like os, what type of shaft do i need
    never to old to have fun. cured of track phobia

  5. #5
    RC Qualifier
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    Rancho Cordova, CA.
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    My Tec is already way too fast with just the 2.5 in it. I can't imagine what it would be like with an 18 in it.
    For the dirt: T-Maxx, Fantom .18, all RPM. RC10T3. RC10GT. For the street: Power Racing XR-80, 1/8th scale, W/stock .27. Mugen MTX-3 W/O.S. 18TZ. Yokomo Gt-4 W/Novarossi CT12. For the water: Traxxas Blast deep vee boat. Radio: Airtronics M8 with the Spektrum system.

  6. #6
    RC Racer
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    new engine

    alas the need for speed and new parts as a result of speed lol
    never to old to have fun. cured of track phobia

  7. #7
    RC Turnbuckle Jr. NitroRCracer's Avatar
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    Nov 2002
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    Adelaide, South Australia
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    You need any SG style crankshaft i beleive.
    OS 15 CVRX is a pretty good engine, but it doesnt have the top end power like the trx2.5, but is close enough for most.

    They do run extremely well though, and hold a tune real good.
    Im no expert. i just play one on the TRX forums

  8. #8
    RC Racer
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    I've had great luck with the Fantom .18 w/ 42k rpm redline it really winds out..

  9. #9
    RC Racer
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    new engine

    i've narrowed it down to the .18 fantom or epic .........can't decide which one yet .......did you have to make a lot of mods for the fantom to fit
    never to old to have fun. cured of track phobia

  10. #10
    RC Racer
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    Dec 2003
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    Fantom .18 Mods

    All I had to do is to grind on the Motor Mount alittle to remove 2 tabs and use a new exhaust header. When you are ready let me know and I'll look up the part # that I used. The new header will be held on with a singlw wraparound spring.

  11. #11
    RC Racer
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    Dec 2003
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    Header to use with Fantom FR18 is here. Its a Dynamite 6599.

  12. #12
    RC Racer
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    Well, the need for more speed continues - I'm taking the Fantom FR18 out and I want to install a big block .21 Hyper 8-port.

    Does anyone have any pointers?

  13. #13
    RC Champion
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    Don't use the stock belts. Try to find better diffs.
    Knowledge is useless unless one can pass it on.

  14. #14
    RC Racer
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    New Era Models makes 6mm belts and I'm using Ball Bearing Diffs.
    Revo/Picco 26, 4-TEC/Fantom FR18
    OFNA LXComp/OS RG 21, GTP/Picco26
    Savage/OFNA Hyper 21 8p, FG 1/5 scale On-Road Car

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