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ATV Riders Forum > Sport ATV Model Information > Honda TRX 250R ATV Info > 35mm A/S carb?

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troybilt
Senior Member

Registered: Apr 2007
Location: Little Apple
Posts: 676

Thanks. I heard the 88/89 flywheel was heavier than the 86/87...? I also saw on a thread someone was running a 14 tooth counter sprocket for woods?? What gearing do most run?

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06 TRX 450R
89 TRX 250R
08 Polaris Ranger XP-LE Black

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11-08-2009 01:37 AM

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Honda 250r 001
Senior Member

Registered: Dec 2008
Location: Kansas
Posts: 1721

quote:
Originally posted by troybilt
Thanks. I heard the 88/89 flywheel was heavier than the 86/87...? I also saw on a thread someone was running a 14 tooth counter sprocket for woods?? What gearing do most run?

85 atc flywheels were lighter than the 86-89 trx flywheels. All will interchange so you can mess around with the weight if you want. the 85 atc flywheleel was only 5 grams lighter i believe.

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TRX 250r - 310 Big Bore

I dont wanna be just another guy, with a pipe and a payment.

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11-08-2009 01:42 AM

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troybilt
Senior Member

Registered: Apr 2007
Location: Little Apple
Posts: 676

Thanks. I was actually interested in a flywheel that is heavier than the 89's... does anyone make one? or are they custom? I could get one weighted and turned. but would rather buy one already done. Just curious...

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06 TRX 450R
89 TRX 250R
08 Polaris Ranger XP-LE Black

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11-08-2009 01:48 AM

Honda 250r 001
Senior Member

Registered: Dec 2008
Location: Kansas
Posts: 1721

quote:
Originally posted by troybilt
Thanks. I was actually interested in a flywheel that is heavier than the 89's... does anyone make one? or are they custom? I could get one weighted and turned. but would rather buy one already done. Just curious...

you have to have a weight welded on the original flywheel. Ive seen one before you also have to run a 3/4 inch spacer plate under the stator cover or the flywheel will hit. I think the ignition i saw was a curtis sparks? Good luck finding one though.

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TRX 250r - 310 Big Bore

I dont wanna be just another guy, with a pipe and a payment.

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11-08-2009 02:08 AM

bloodswet&gears
Junior Member

Registered: Apr 2009
Location: tn
Posts: 24

needle

quote:
Originally posted by dynofox
I've got 35mm A.S. carbs on both my '86 ATC 250r and '86 TRX 250r. I'm very pleased with them for xc / trail riding. Both carbs now have 152 mains and 42 pilots. The ATC is using the DEK needle on the 2nd clip and the TRX has the stock needle from the 34mm pj on the 3rd clip.

TRX mods: FMF fatty pipe, FMF Q silencer, air box has drilled holes in the lid with a pre-filter over them, UNI filter, boyesen rad valve, low / mid ported cylinder, '00 CR 250 ignition, 12/39 gearing and soon to come a cool head with 21cc dome and '85 ATC head gasket.

on the trx, are you using a ceg needle or cgm? and how did it work out compared to the dek? will it idle without running the idle screw for the slide all the way up? i have a 35 as on mine trying to get right also. thanks in advance.

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11-22-2009 07:02 AM

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