HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
tk421

Jetting changes tested: the best so far!

2 posts in this topic

Taffy, your jetting recommendation worked the best. Thanks! The rear tire broke loose all day long (gears 1,2,3, 4th a little). Throttle response was instant and brutal. Cold start was hard, I just did it the one time at the start of the day so I have not figured out what the engine actually wants yet on a cold start. It appeared the choke did no good, but twisting the throttle twice, started it right up. Hot starts were first kick every time (with hot start button pulled out). The engine surprisingly had good low end power. Mid to top end is where it screamed! :)

Taffy, you recommended a 158mj and a 40 pj I believe. This is what I ended up with:

MJ 158

MAJ 160

EMM clip #4

PJ 40

PAJ 65

PS (2 turns out)

BK/APJ (very short, quick squirt)

C.F. AIRBOX

Stock air filter

Header: YAMAHA Stainless Steel P/N-YZR-5GR93-10-SS

Muffler: Stock 98 YZ.

YZ Timed

Grey wire: (not unhooked), (not yet).

Gearing: 14 x 50 (stock WR raio-357).

http://www.photoalbumweb.com/gschildroth/

Share this post


Link to post
Share on other sites

well done. after a couple of recent results i'm starting to feel human again.

your starting procedure will probvably alter slightly when you get used to it, day in day out.

i would have thought that you wouldn't need hot start but there you go. like i said ride it and see.

Taffy

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0