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Thread: new motor...how much?

  1. #1
    Join Date
    Nov 2003
    Posts
    17

    new motor...how much?

    to get a stock 300ex engine rebuilt, what would that cost to pay someone to do?

    also, how much would it be to buy a new one?

  2. #2
    Join Date
    Apr 2002
    Location
    clarksville, TN
    Posts
    6,054
    depends on what all you need, just piston, rings, hone and labor, maybe 350 or less. dont buy a new motor, way cheaper to rebuild. i'm sure if one of the engine builders on this site knew what happened or what is wrong with your motor, they could give you a pretty good estimate on what it would cost
    Planning a comeback...

  3. #3
    Join Date
    Nov 2003
    Posts
    17
    case has a hole near sprocket, about dime size from a rock. motor runs great just wont hold oil, i figure u need to take the motor all apart to fix that so what not have it freshened up. most likely wont need machine work. just new rings bearings etc

  4. #4
    Join Date
    Apr 2003
    Location
    NeW JeRSEy
    Posts
    1,821
    u mite be able to get the hole welded
    MaTT
    300ex
    white 400ex maier/coustom lengthed works /250R arms painted black,20 inch kenda KlAws, hmf slip on, uni air filter, ac nerfs, renthal fat bars, kenda front mxs , pro design kill switch, coustom skidplates >>> engine work or a new quad
    >xR- 50-joker bar kit, k&n, FmF POWer cORE 2 WElded on to strock header >PINEY POWER
    aim- mx300exshift

  5. #5
    Join Date
    Jul 2003
    Location
    UT
    Posts
    697
    I've heard of people who have repaired such holes with some JB Weld. You just grind/sand around the hole to give it some teeth then get some metal screen and cut a patch a bit bigger than the hole and patch it up! It may take a couple of coats to get it filled in.
    2004 450R - 13:1 JE piston, HRC Cam, Yoshi full exhaust, ESR Intake, Hinson Clutch Basket, GT Thunder dual rate front revalves, Burgard +2+1 arms, GT Thunder rear linkage & rebuilt shock, G-Force +4 axle, W.E.R. Stabilizer, Tokyo Mods CDI, RAZR MX tires, Tusk nerfs, MSR bars, Tusk tether.
    2003 406EX - 10:1 Wiseco, HotCam Stg 3, Port & Polish, 450R 42mm carb, Stock shorty straight through exhaust, Powerbomb, K&N, FST cooler, Arens nerfs, Zaps CDI, 14T sprocket, VW Stabilizer, Magura Hydraulic clutch, Holeshot XC's(wifes)
    1990 Yamaha Blaster(sons)
    1986 Honda 200SX(daughers)
    2004 Tomahawk 110(sons)

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