Question about 1989 Suzuki DR 750 S

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I want to add power and grunt to my motorbike

I have a 1985 suzuki dr 250, and it goes hard and all but i was wondering if there is any way to give it more power...but keep it cheap.. and i was curious about boring out the motor... is that expensive and is it worth it, i would like some information on that please. also i would like help on wheel standing/ wheelie and some tips on that. 
thanks, domo

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  • Domodude Jan 03, 2009

    yea well i can get it up in gear 1... then i have trouble changing gears when up... i use the bike comp[pletly off road and i just want more power... how much am i looking at for a bore out? and what do u think about the sprockets? smaller would make me wheelstand easier? also it is fromt end heavy.. any ideas to make it lighter... thanks.. domo



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If you are thinking of changing the motor out for a larger one, I am looking for a CDI box and coil for a 250 and would be willing to purchase yours.

Posted on Feb 27, 2009

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Hi ...... You can go any direction you want, how much do you want to spend ?
It's gonna be a trade off with this motor, any mod's you do to the engine will add stress to some component. Bigger bore will give more 'grunt' but may require bigger valves & carb. This in turn will increase pressure on small ends, conrods and crank big end plus your oil pump might not be able to cope with increased demand and temp's. If the engine works well for you now then may I suggest new sprockets (and chain ?) to either increase accelleration or top end. If you use it totally off road gear it for a top speed of say 55mph but you'll pull wheelies in first three gears.
Failing that save your money and trade your bike in for an XR400, dependable & proven.

Posted on Jan 03, 2009


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