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The 2-Stroke Garage => Turning Wrenches => Topic started by: mjsracing on February 16, 2019, 05:05:15 PM

Title: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: mjsracing on February 16, 2019, 05:05:15 PM
Hello all.

Thanks Mark for getting the forums back up and running!

I will be moving my 1973 RD 350 out west to Albuquerque NM. That just over a mile higher than my current elevation.

Current Setup:
Chuck Q Super Tune Stage 1 porting and head work
YZ125 reeds
Chuck Q Boost bottle & manifolds
Replacement VM28 round slide carbs
   2.0 air jet
   169-P2 needle jet milled 1.5 mm
   37.5 Pilot
   210 Main
   ? jet needle
Y-boot with Uni filter
Spec 2 F1 Race pipes
PowerDynamo (MZB) static CDI ignition

Bike runs nice at my elevation, but will need some changes to work at 6000+ ft elevation.

Will I just need to down 2-3 sized on the main, maybe down 1 on the pilot, and move the clip 1 notch up?

Looking for a good starting point and advice.

Thanks for any help, and if you are near Albuquerque, message me. I have space and will know the roads soon.

Mike from Apex in ABQ
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: JA-Moo on February 17, 2019, 01:19:49 AM
I'm in Rio Rancho. One main jet should do it, maybe one size pilot and will find out if you need to move the needle. Get ready for a 22% hp loss. No air up here...... :eek: We will have to go on a ride this summer.
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: mjsracing on February 17, 2019, 07:56:58 AM
Thanks JA-Moo.

I will be living in Rio Rancho for a year. Once I'm settled, I will let you know so we can ride.
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: SUPERTUNE on February 19, 2019, 09:46:50 AM
Mike,
When you get out there, get in touch with John and he can get you jetted correctly.
Just have John call me for jets and I'll send them out to him.
Chuck
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: mjsracing on February 19, 2019, 08:36:05 PM
Awesome! Thanks Chuck and John.

Mike in ABQ
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: 350smoker on August 26, 2019, 06:12:51 PM
A little late but I'm In Albuquerque also would be great to ride with some other smokers, I'm firing my rebuild up tonight!
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: JA-Moo on August 26, 2019, 08:50:09 PM
We went back and forth PMs and I gave him my number, he never called, so I guess he got it worked out. Not a big change really.
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: SUPERTUNE on August 26, 2019, 08:52:35 PM
Mike Settledge is out there too for a riding buddy.
PM me and I'll text you his info.
Chuck
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: SUPERTUNE on August 26, 2019, 08:53:23 PM
Thanks John!! :celebrate:
Title: Re: Moving bike from 400 ft to 6000 ft -- jetting help
Post by: mjsracing on August 28, 2019, 09:48:10 PM
In Albuquerque and enjoying my RD350. It runs out of power after the 10K trailhead on the crest highway, but otherwise I'm getting close on jetting.

Always want to ride with fellow smokers!

Mike
PM and lets ride!