jetting summit 670 with deleted HAC kamloops area

[Chris51]

Hey every one just wanting some advice on jetting my 1996 670 im removeing HAC becaus Ii have 3 of them and there all worn out. for now I am just putting stock MXZ jets in it a 300 & 290 I ride sunpeaks and crowfoot so id say 4000 to 8000 ft -10 to +10 #50 pilots bone stock motor just looking to compare with people running simular set up. Was going to also run the mxz needles and needle jets but there discontinued so not sure if I should bother. its just a trail slead not realy into changing jets all the time so any info would be great thanks

 

[JBDoo]

Those sleds were known to be lean on the midrange so be careful with needle adjustments

 

[Chris51]

Ok thats good to know would the pilot jets afect that because the dealer said I should go from 60s to 50s I wonder if that would lean it out to much

 

[250mark1]

I was sick of jetting my 96 summit 670 mod motor and just installed a holtzman Atacc
You jet for minus 29 at your lowest elevation and It compensates for both temperature and elevation gain
i was running 490/500 but my motor has had a bunch of work done running 44 mm carbs. And runnin on 75% avgas