OzVMX Forum

Clubroom => Tech Talk => Topic started by: John Orchard on December 30, 2018, 09:00:07 pm

Title: Ballpark start, VM36 on 250 piston-port engine?
Post by: John Orchard on December 30, 2018, 09:00:07 pm

Hey Guy's,

I was wondering if anyone could give a ballpark starting point for jetting on piston-port 250 running a VM36?

l have it on a Yam DT1 with ported barrel & expansion chamber. The carb that came with the bike has the follwing jetting......

MJ - 330
PJ - 30
N - 6DP1
NJ - Not out yet :-)
S - 2.5

Any help is appreciated, thanks in advance.

Title: Re: Ballpark start, VM36 on 250 piston-port engine?
Post by: 211 on December 31, 2018, 10:11:56 am

have 3 250 piston port bikes - '74-76 all run
main 290 - 310
pj45
1.5 on slide

Title: Re: Ballpark start, VM36 on 250 piston-port engine?
Post by: John Orchard on December 31, 2018, 06:30:09 pm

Quote from: 211 on December 31, 2018, 10:11:56 am

have 3 250 piston port bikes - '74-76 all run
main 290 - 310
pj45
1.5 on slide

Wow l didn't even know you could get a 1.5 slide!!!  :-)  What needles Dave?

Title: Re: Ballpark start, VM36 on 250 piston-port engine?
Post by: facthunt on January 01, 2019, 08:45:59 am

DT1 VM36

M 350
PJ 45
Q8
6DP17
2.5 Slide

Title: Re: Ballpark start, VM36 on 250 piston-port engine?
Post by: John Orchard on January 01, 2019, 10:24:51 am

Quote from: facthunt on January 01, 2019, 08:45:59 am

DT1 VM36

M 350
PJ 45
Q8
6DP17
2.5 Slide

Thanks Fatty ;-)  What engine was that used on?

Title: Re: Ballpark start, VM36 on 250 piston-port engine?
Post by: facthunt on January 01, 2019, 10:35:14 am

Quote from: John Orchard on January 01, 2019, 10:24:51 am

Quote from: facthunt on January 01, 2019, 08:45:59 am

DT1 VM36

M 350
PJ 45
Q8
6DP17
2.5 Slide

Thanks Fatty ;-)  What engine was that used on?

Pre 70 DT1