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Thread: oversize oil cooler question?

  1. #1
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    oversize oil cooler question?

    im wanting to put a larger oil cooler on my 400ex. my question is can you go too big ? im looking at a derale transmission cooler 10 1/8" x 8 1/8" it would fit im wondering would it be harder on the oil pump? i know i would need to add a little extra oil.
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  2. #2
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    Re: oversize oil cooler question?

    Originally posted by 6858-400ex
    im wanting to put a larger oil cooler on my 400ex. my question is can you go too big ? im looking at a derale transmission cooler 10 1/8" x 8 1/8" it would fit im wondering would it be harder on the oil pump? i know i would need to add a little extra oil.
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  3. #3
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    Anybody knows what's the max we can go on an oversize oil cooler w/o messing with the oil pressure on a 400ex??

    Somebody try that king of cooler? Did it cool better than a traditional one??

    416 CP 12.5:1, Hotcam stg 3, H2H mid P&P, Race-cut valves, FCR 40 H2H dual spray venturi jet, Flywheel lightened 13.3oz, Cometic gaskets, Roll Design +2+1, DS450x FS, Eyeballs +2 stem, GPR stabilizer, LSR Axel & Carrier, misc parts...

  4. #4
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    i had an 03 400ex and someone had put a fairly large transmission cooler made for automotive use. it worked well, and they even wired in a fan from a sportbike and you could turn it on and off manually..
    1995 Blaster. Bored .040" , midrange ported, head rechambered, pro series reeds, FMF fatty/Dg silencer, lightened flywheel, +4 timing, Hydro brakes, Lonestar +2 a-arms, Works dual rate G-series shocks, +2 swingarm,. More to come

  5. #5
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    Re: oversize oil cooler question?

    Originally posted by 6858-400ex
    im wanting to put a larger oil cooler on my 400ex. my question is can you go too big ? im looking at a derale transmission cooler 10 1/8" x 8 1/8" it would fit im wondering would it be harder on the oil pump? i know i would need to add a little extra oil.
    Why are you thinking you need a bigger cooler?
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  6. #6
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    I think every EX will benefit of a better cooling systeme... even a stock ex. Dropping the oil temps will give u better performance in all aspects of this free air motor!
    416 CP 12.5:1, Hotcam stg 3, H2H mid P&P, Race-cut valves, FCR 40 H2H dual spray venturi jet, Flywheel lightened 13.3oz, Cometic gaskets, Roll Design +2+1, DS450x FS, Eyeballs +2 stem, GPR stabilizer, LSR Axel & Carrier, misc parts...

  7. #7
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    Main problem you run into is the lines must be worked so you can use an automotive style cooler. Its not hard, but you need some knowhow and the right fittings.

    It would be best to get conversion fittings to use. heres some that might help..

    http://www.summitracing.com/search/D...mission+cooler

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  8. #8
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    Thx bro! I'm thinking about putting the round style cooler as a 2nd cooler, in-line with the OEM... I don't know if this style of cooler is more efficient than a traditionnal one?
    416 CP 12.5:1, Hotcam stg 3, H2H mid P&P, Race-cut valves, FCR 40 H2H dual spray venturi jet, Flywheel lightened 13.3oz, Cometic gaskets, Roll Design +2+1, DS450x FS, Eyeballs +2 stem, GPR stabilizer, LSR Axel & Carrier, misc parts...

  9. #9
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    [QUOTE]Originally posted by CJM
    [B]Main problem you run into is the lines must be worked so you can use an automotive style cooler. Its not hard, but you need some knowhow and the right fittings.

    the one i had someone cut the stock lines and bought a tubing flaring tool from like autozone and then flared the ends so the lines will stay on, and added rubber lines up to the cooler. worked fine, but might not be the best choice for the woods..
    1995 Blaster. Bored .040" , midrange ported, head rechambered, pro series reeds, FMF fatty/Dg silencer, lightened flywheel, +4 timing, Hydro brakes, Lonestar +2 a-arms, Works dual rate G-series shocks, +2 swingarm,. More to come

  10. #10
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    .

    i live in arizona it gets over 100 deg here in the summer
    "It take 2 bike riders to equal 1 quad rider"





    dyno jet kit
    outerwears pre filter
    k&n air filter
    k&n power lid

    hmf polished slip on
    razr 2 all around
    armadillo 1/4" swing arm plate
    ebc sevre duty brake pads
    hot cams stage 2

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