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Thread: Need advice from 3 wheeled masters on 85 250r set-up

  1. #1
    Join Date
    Dec 2002
    --
    15

    Need advice from 3 wheeled masters on 85 250r set-up

    Here it goes,
    I am rebuilding a beat up old POS with a stock jug, carb and a old FMF pipe. I would like this bike to be very reliable but stronger than stock.. What are your suggestions on the following:

    1. piston; size, compression
    2. porting
    3. carb
    4. reed cage - reeds
    5. pipe-silencer

    I don't want a top end only bike. I would rather have good bottom, great mid and decent top than killer top and nothing else.

    Any special clutch set-ups besides stock?

    Thanks in advance guys! -RT

  2. #2
    250rAL is offline Just Too Addicted Arm chair racerJust too addicted
    Join Date
    Sep 2002
    Location
    Sabula,IA
    --
    620
    I would get the top end rebuilt with either stock or aftermarket piston/rings/pin/pin bearing. The pipe should be fine as long as it isn't badly dented. Some aftermarket reeds will make a noticable difference if the ones in it are old. I don't have any personal experience with aftermarket cages but I don't think I'd bother with it myself. If you've got the cash, go with a Keihin 36PJ carb and K&N filter. I wouldn't bother with porting either since you don't want a top end motor. If you can do the work yourself, you should be able to get all this for about $350.

  3. #3
    Join Date
    May 2002
    Location
    Southeastern Wisconsin
    --
    3,658
    Get the head milled for a little more compression. Nothing race but more than stock. Compression is one of the best mods you can do. If you use a K&N get the outerwear for it. Go with reeds but pass on the cage. Make sure you have a good seal on that pipe. Go with an aftermarket flange if you need to. Bore it to clean it. No use going bigger there than you need to.
    '02 Honda 416ex - A seasoned blend of 11 herbs and spices
    '04 Honda Recon - The yard machine and snow plow
    '88 Honda CR250R - Another chapter in my torrid all terrain affair

  4. #4
    Join Date
    Nov 2002
    --
    132
    I'd say go with this:

    [list][*]Second Stage Porting "pump gas" www/boyesen.com (comes with Twin Air air filter and Boyesen Power Reed)[*]Bore the stock carb (#145 main jet) "Boyesen"[*]FMF Fatty Pipe and Power Core Silincer[*]RPM Exhaust Flange[*]Run Holeshot II's[/list:u]

  5. #5
    Join Date
    Nov 2002
    --
    132
    Oh, I forgot to mention, run the Pro Lite Wisco Piston. Stay with the stock bore until it's time to open her up a little more.

    If you want to look like me on my 250R let me know, here's a few pics:
    http://photos.yahoo.com/bc/y2k_anthony/lst?.dir=/250R+In+Action&.src=ph&.order=&.view=t&.done=http

  6. #6
    Join Date
    Dec 2002
    --
    15
    Thanks for the advice, anyone else?? -RT

  7. #7
    Join Date
    Sep 2002
    Location
    New Hampshire
    --
    794
    Tony_250r has a pretty good idea of whats going on. The only thing i would change is his choice of pipe. Go with either the ESR atc5, an LRD, or a Paul turner. These are the top choices for standard pipes on the 250r.

  8. #8
    Join Date
    Nov 2002
    --
    132
    Hi Blaze.
    I did'nt want to give him to much power, that's why I mention the FMF instead of the ESR or Paul Turner.

    By the way, my set-up needs a Rev pipe, which one do you reccomend, the ESR or Paul Truner? I like both.

    Curently I'm running FMF and Power Core II. One more question, if I get the Paul Truner Rev pipe with the welded on silincer, can the silincer be repacked?

    Thank

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