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06-11-2008
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 Ok guys PLEASE!!!!! help me make a decision on setup. Right now im running a stock cylinder stock port. I have a sparks mx pipe and stock carb---thats it. Im definitely switching to a 38mm air stryker carb. Im definitely going to get portwork done.What im not sure about is wether or not to use a 4mm stroker crank. I am going to stick with the stock cylinder. Is there going to be big difference in HP using the 4mm stroker and not using the 4mm stroker?      |
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06-11-2008
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| yeah i personaly think with a 4mm ported on a sparks MX pipe with the right set up could easily pull a nice HP # like at least 50 or so. That would be a killer set up. You could always ask Denny about it...
__________________ Passion Racing blaster LA sleeve 240 cylinder Vito's +3mm crank 39mm Keihin PWK Shearer custom built pipe for this motor to Jim's specs shaved and rechambered head with 4 angle design cases moddified to run banshee TZ bearings custom billet intake custom billet flange custom H2 Piston K&N airfilter PE billet clutch basket RDZ HD clutch springs PVL ignition WCR 1-5 duneable override +4 swingarm LSR Honda style hub   1989 Suzuki LT250R ported cylinder FMF gold series Keihin 38mm PJ boyseen rad valve reed spacer K&N clamp on lightened flywheel |
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06-11-2008
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| Im pretty sure thats the way im gonna go |
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06-11-2008
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| Going the 4mm route you will definitely get more HP and torque. I actually wish that I would have went with a 4mm on my setup when I had all my engine work done. Bob over at RB Racing is the one that built engine, and I know that he's hit around 52 HP on one of his fully ported stock cylinders.
__________________ LSR 250R |
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06-11-2008
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| Do you know how to get ahold of bob at rb? |
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06-11-2008
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| Sure do  RB Racing 10025 W. Garrison Rd. Laingsburg, MI 48848 517-388-3662 rbracing11@msn.com He can also be found on here and other forums as well, screen name: machwon Here's his website as well: RB Racing, Two-Stroke Porting Bob is a great guy and does great work, which he stands by 100%. He has a dyno in his garage, so all of his work has been tested and trued. I have been 100% satisfied with the work that he's done for me.
__________________ LSR 250R |
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06-11-2008
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| what kind of riding do you do? the 4 mil crank will not let it rev as "quick" as a stock stroke motor, but it will have more torque.
__________________ 86' honda 250R woods bike fresh motor as of sept. 9th 08' esr trx 5 pipe and silencer 38mm air stryker carb stock cyl. with 68mm wiseco piston (86') cr thin head gasket 180psi compression (stock head) 88' hot rods stock crank with spacer plate vforce 3 reed valve 01 cr250 ignition system +4 axle 13/38 gearing durablue lowering strut maier front and rear fenders |
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06-11-2008
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| I do a little bit of everything. Lots of trail riding,play drag racing,hillclimbing. I dont want it to be just a trail quad or just a drag quad but i do want a lot more hp. Basically just a play quad. |
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06-11-2008
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| do it. the torque is great for trails and hill climbing. |
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06-11-2008
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| That will give you what you want for sure!!!
__________________ 1987 TRX ESR big bore-stroked on alky 1986 ATC 250r with 330 pro-x 2001 DS 650 R.W. kit-Sold that 4poke,but it was kinda fast!!lol 85 atc underway with 350 stroker motor being built now!! |
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