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Thread: update on 400ex "heavy duty cam chains" a must read

  1. #1
    Join Date
    Jun 2001
    Location
    BOONVILLE, NC USA
    Posts
    139

    update on 400ex "heavy duty cam chains" a must read

    i have done some research and found out what the engine builders use as the "heavy duty cam chain" for the 400ex. the cam chain that they sell for $90 to $100 is the crf450 cam chain. the crf450 chain is only $25.68 from service honda. i installed the crf cam chain tonight and it works fine. the timing marks on the cam sprocket line up and the chain fits the cam sprocket just fine. the crf chain has a "U" shape on the top of the side plates and is wider than the stock cam chain. also it has the same "M" markings on the side plates like the stock chain and has the same number of links as the stock chain ( 112 links). the crf450 cam chain is more "heavy duty" than the stock chain. i paid $42.77 for the crf chain, right cover gasket, and shipping. if a engine builder tries to tell you that they are not the same chains think about this, if you where making about a $50 profit from each chain and you might be able to sell 1,000 chains well you do the math. i almost forgot the part number for the crf450 cam chain is 14401-MEB-671.

  2. #2
    Join Date
    Aug 2002
    Location
    San Diego, Ca
    Posts
    974

    Thumbs up

    Very nice discovery I am looking to buy a heavy duty chn also. I will order one of those chains from service honda. Thanks for saving mesome money.
    2001 Duncan Racing National 440ex
    Power Cylinder 4000 12:1 JE
    web cam 463/9i, port & polish, 3 angle valve job, hardend rockers, titanium valve springs.
    Duncan Racing Fat Boy 4 Exhaust
    1mm oversized blackdiamond intake and exhaust valves
    15 point gusseted frame powder coated candy apple red
    Doug Eichner Signature Series Edelbrock Carb
    Procom CDI ignition
    Hinson Basket, Removable Side Case
    Sparks 8 plate clutch
    Custom graphics and seat cover
    Custom air intake with K&n Filter
    everything is polished and billet
    Roll Design chrome swing arm
    Elka dual rate ssd with LT linkage
    TCS ZPS, douglas ultimate billet beadlock wheels with Maxxis Razr's
    Roll +1.5" chrome anti vibe stem with Tag T-2 oversized bars cr hi bend
    Herrmann arms Trail Tech HID Lights w/ custom billet mount (for the dunes)
    Overized UM vented oil tank FST oil cooler kit and even more

  3. #3
    Join Date
    Jan 2003
    Location
    Florida
    Posts
    195
    Wow thats awesome that the CRF chain fits on the trx , if i get a new chain thats what ill do.

    but did you see an aftermarket chain too or is this just a educated guess? not to bash your discovery.

  4. #4
    Join Date
    Jun 2003
    Location
    brentwood, ca
    Posts
    1,906
    Sounds good to me, people put cr clutches and what not in our quads, so anything is possible.

  5. #5
    Join Date
    Sep 2002
    Location
    Clarksburg, West Virginia
    Posts
    1,706
    lol, well thats some pretty good work man! Keep it up!
    Last edited by bmw500hp; 06-16-2003 at 10:15 PM.
    -2001 400ex
    -Custom Axis,
    -1" jrd arms
    -CAFD 1.25 Swinger
    -Houser 1" stem
    -fat-bars
    -416/Sparks mod Carb/Web Cam
    -Ultimate Billet Beadlocks (4) and
    Razor 2's all around
    -GPR Stabilizer
    -"Brand New ORANGE Maier for sale
    with quad or seperate.

    Quad is For sale...call 304-623-3921

  6. #6
    Join Date
    Jul 2002
    Location
    texas now, errr
    Posts
    1,201
    Originally posted by Big - D Racing
    Very nice discovery I am looking to buy a heavy duty chn also. I will order one of those chains from service honda. Thanks for saving mesome money.
    i think you owe him a percetage of the money you saved
    '02 416ex, hotcam stage II, ported head, big gun

    i haven't failed, i mearly found 649 ways that didn't work

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