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  #1  
Old 09-24-2003, 05:41 AM
Woody_393's Avatar
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Default GMB II Jetting

The thought just occured to me that I will need to rejet my bike for GMB II, and I thought I would ask and see what the locals are running jetting wise on the various bikes.

So please post the bike you have and the jetting so we can come prepared and not have to spend too much time trying to dial in our rides.

Heck I don't even know anyone in TX that has a CRF... seems like the whole country.. err I mean state is covered in blue with some specks of green mixed in... Maybe The jetting that Yardpro uses will work in houston??? Actually Vintage Dave rides a CRF I believe.

Anyway, would you guys mind posting your bike and jetting info based on splendora so we can come prepared. Thanks in advance.
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  #2  
Old 09-24-2003, 06:13 AM
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Default Re: GMB II Jetting

what about the tires? is the track hardpack of intermediate?
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Old 09-24-2003, 06:29 AM
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Default Re: GMB II Jetting

Woody:

your right Vintage Dave does ride a CRF 450, I'll let him know that you want his jetting specs.

Yardpro:

Most of the tracks here in Texas have sand & clay in them. So it an soft or intermediate tire like a Dunlop 756.
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Old 09-24-2003, 06:35 AM
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Default Re: GMB II Jetting

Jet for sea level and use a soft to intermediate tire. The start gate is concrete but it drops off to really deep sand and then once you get on the track, it is loamy. It transitions from sand to hard pack and back but it's tons of fun! They prep the track well!

My jetting for my 00 426 is stock and it runs great!
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Old 09-24-2003, 11:24 AM
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Default Re: GMB II Jetting

thanks guys,
i run 756 front and currently have a 752 rear. so i should be fine.
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  #6  
Old 09-24-2003, 03:54 PM
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Default Re: GMB II Jetting

Good thinking Woody. Anybody down there have any specs on the Cr 125??
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Old 09-24-2003, 04:08 PM
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Default Re: GMB II Jetting

Unless you live 3 or 4000 feet above sea level you guys should be okay with what you have....
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Old 09-24-2003, 09:15 PM
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Default Re: GMB II Jetting

I'm at 4200 asl, so I will need info if possible.

Thanks Big M. I'll look for his reply. Yardpro are you running stock jetting currently?
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Old 09-24-2003, 09:20 PM
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Default Re: GMB II Jetting

I do believe you should run a................ou812 main jet with a ............br549 pilot I don't even think I've ever seen my stock ones. You also want to increase your tire pressure to about ...........32 lbs and adjust your clickers to the far right: Trust me Im really a pro racer down here in the south. You guys don't show off and bring them fansty helments and stuff we got plenty of buckets
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  #10  
Old 09-24-2003, 09:22 PM
Woody_393's Avatar
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Default Re: GMB II Jetting

LMAO... I'm be sure to do exactly that Macho... NOT!!! You are funny... I have a sneaky suspision that I will need to keep my bike locked in a trailer the entire time I'm not on it. Or it might get Machoized...
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