2021 300 RR jetting report

Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.

2021 300 RR jetting report

Postby super_rat » Sat Oct 09, 2021 12:29 pm

Beta manual jetting recommendations have worked out great over 600 miles of 9k-13k ft elevation riding. Runs well at all RPM, good idle. Maybe 1.5 inches of silencer spooge after 60 mile rides. Getting around 40 mpg.
2021 300 RR
2006 KLR 650
super_rat
 
Posts: 43
Joined: Sat Jan 09, 2016 8:11 pm
Location: Tulsa, OK, Lake City, CO

Re: 2021 300 RR jetting report

Postby Rob578 » Sat Oct 09, 2021 6:26 pm

Could you elaborate on what the Beta recommended jetting is? I have to ask, what part of the world are you in that you have been able to ride 600 miles at 9k to 13k elevation?
Rob578
 
Posts: 90
Joined: Wed Mar 25, 2015 11:31 am

Re: 2021 300 RR jetting report

Postby super_rat » Sun Oct 10, 2021 8:01 pm

Page 46 - 35 pilot, 158 main, N2ZK position 1, 2.25 turns on air screw

Colorado San Juan mountains
2021 300 RR
2006 KLR 650
super_rat
 
Posts: 43
Joined: Sat Jan 09, 2016 8:11 pm
Location: Tulsa, OK, Lake City, CO

Re: 2021 300 RR jetting report

Postby Rob578 » Sun Oct 17, 2021 4:26 pm

Thanks, I could never get the N2ZX to run clean off the bottom but I was afraid to go below 165mj at sea level.
Rob578
 
Posts: 90
Joined: Wed Mar 25, 2015 11:31 am

Re: 2021 300 RR jetting report

Postby super_rat » Fri Oct 14, 2022 1:37 pm

Mileage even better this year, never less than 45 mpg, usually 46-48mpg. Even less spooge .Nice not to have to buy a larger tank.
2021 300 RR
2006 KLR 650
super_rat
 
Posts: 43
Joined: Sat Jan 09, 2016 8:11 pm
Location: Tulsa, OK, Lake City, CO

Re: 2021 300 RR jetting report

Postby fenderworks » Mon Oct 31, 2022 1:28 pm

thats some good mpg...i am a bit jealous.
fenderworks
fenderworks
 
Posts: 135
Joined: Thu Jun 06, 2019 7:07 pm
Location: pueblo, colorado usa

Re: 2021 300 RR jetting report

Postby super_rat » Fri Jun 30, 2023 9:19 am

Ditto for 2023, consistent 48 mpg. One correction to earlier post, I've been using a 155 main, not a 158.
2021 300 RR
2006 KLR 650
super_rat
 
Posts: 43
Joined: Sat Jan 09, 2016 8:11 pm
Location: Tulsa, OK, Lake City, CO

Re: 2021 300 RR jetting report

Postby fenderworks » Sat Jul 01, 2023 8:46 pm

wish i could get that MPG. i get about 50 to 55 per tank....thats it.
fenderworks
fenderworks
 
Posts: 135
Joined: Thu Jun 06, 2019 7:07 pm
Location: pueblo, colorado usa

Re: 2021 300 RR jetting report

Postby aj_mariner » Thu Sep 28, 2023 9:51 pm

Yeah, sipping fuel at those elevations. Probably feels like a 200. Ever thought about a S3 high elevation head?
I’m PNW at sea level to 4000’.
Amsoil interceptor at 50:1. Factory Fatty pipe, 65degF is 38 pilot, air screw at 1.25 open, NECH at clip 3, 170 main…no spooge. I probably need to go with a 40 pilot
‘17 300 RE - gone
‘22 300 RE
aj_mariner
 
Posts: 755
Joined: Wed May 17, 2017 12:53 pm
Location: Glacier, WA


Return to Engine - 2 Stroke

Who is online

Users browsing this forum: No registered users and 60 guests