calming the hit down....

[stainlesscycle]

so, i just put a 300 motor into my 200 frame, and i'm trying to calm it down a bit. it pulls front end up pretty easy in 4th... i know with time i will get used to it, but i don't have a lot of time right now...

the problem i have is this:

13/52 gearing, xc200 cdi, 2k1 ignition, 9oz fww, messico pipe.

all of these factors make it pretty wheelie prone...

i can't change anything but jetting and timing today.

it's jetted:
178 main
45 pilot
ddk needle
3rd position
#7 slide

there's a pretty substantial hit on it at 1/4 - 1/2 throttle.

i'm assuming i can tame it a bit by moving to #4 position on needle and retarding the timing a degree or 2.... any other suggestions?

[Tlineman]

seems like pretty low gearing for a 300. Maybe try out a 48T rear.

[stainlesscycle]

yeah, can't get a sprocket today.. it's definitely too low. 1st gear is awfully short...

[flybars]

I would think a G2 throttle cam system would help delay and smooth the early hit. And a heavier flywheel weight, or a 2k3 ignition, a rekluse Zstart or revloc Dyna Ring with a bit of clutch slipping, would all be helpful. Any one or a combination of two or more together could give U what your looking for imo.

[Fred1956]

Originally Posted by stainlesscycle

so, i just put a 300 motor into my 200 frame, and i'm trying to calm it down a bit. it pulls front end up pretty easy in 4th... i know with time i will get used to it, but i don't have a lot of time right now...

the problem i have is this:

13/52 gearing, xc200 cdi, 2k1 ignition, 9oz fww, messico pipe.

all of these factors make it pretty wheelie prone...

i can't change anything but jetting and timing today.

it's jetted:
178 main
45 pilot
ddk needle
3rd position
#7 slide

there's a pretty substantial hit on it at 1/4 - 1/2 throttle.

i'm assuming i can tame it a bit by moving to #4 position on needle and retarding the timing a degree or 2.... any other suggestions?

I would think moving the needle richer would soften it a bit

[Jakobi]

As mentioned.

Throw a 48T on the rear, or a 14T up front (if they fit).
Richening the jetting up will dull things down at the expense of fuel economy.
A heavier flywheel will help too!

What have you got available in the short amount of time? Whats easiest to do? I'm thinking countershaft sprocket and some jetting mods.

[stainlesscycle]

hah, i got no time...i have a race tomorrow, built the motor yesterday... (blew my regular 200 motor up on thursday)

well, i realized a few issues - when i built the motor i only had 1 base gasket (the thinnest one....which is what i had...) so i've probably got somewhere north of 200psi compression. it was pinging a tiny bit when it got hot and full adavance - so i backed up the timing another degree and put some 110 octane in. no more pinging. still has no problems with 4th gear roll on power wheelies... the 13/52 gearing is killing me - but i guess i'lll just roll around in 3rd and 4th tomorrow...

obviously if i had some time, i'd throw a 2k3 in it with big fww, and go 13/48 or so, but i've got neither on hand, so it should be exciting...


the biggest change is normally i'm winding my 200 out. with the 300 i'm forced to change my throttle control and rethink my whole power delivery - losing traction wasn't much of an issue with the 200. with the 300 it's gonna be a major issue......just gotta learn to lug it i guess.


i'll just deal with it and see how it goes..

[lankydoug]

Wanna trade rear sprockets? I have a EC200 with a 48 and would like to have a 52.

[Rick]

Given the time issue.......ride a gear higher....it's a 300 hundo!

[Jakobi]

Originally Posted by Rick

Given the time issue.......ride a gear higher....it's a 300 hundo!

Ride 2 gears higher!!

It almost makes me want to drop a 52T on the back of mine
When I think about it though I'm really never that hard into the revs when the going gets tighter and more technical. Good luck mate!