gasgas 250ec flywheel weights

[popscycle]

Please help if you can, I'm new to gasgas and recently purchased a 2003 ec250 to ride in hare scrambles, however the bike hits like a motocrosser and is hard to ride in woods. I'm thinking of adding flywheel weights but i,mtold the ec already has weights . Steahly lists weights for mc bikes but not for ec however they say if ignition wires are at 10 o'clock position it is a light flywheel and if wires are at 1'oclock it is a heavy flywheel. Mine are at 10 o'clock position. Needto know if i can add weights or different flywheel and where i can purchase also pulled ignition cover and cannot see any weights. Thanks

 

[eff]

Yes you have the 2k-2 ignition and you can use the FWW.

 

[popscycle]

thanks for responding eff, I know this is dumb but how do I get the flywheel off and can you tell me anything by looking at the pictures? Where would the flywheel weights be?

 

[eff]

You already have a flywheel weight on your bike. I'm not sure what weight that is though.

The flywheel is the brass part behind the darker weight. The weight is actually substituted for the flywheel nut.

Two methods to remove. Either block the engine from turning or use a pnuematic impact driver to loosen.

 

[stainlesscycle]

looks to me like your timing is too far advanced, that would explain the big hit.........

see this post for setting timing on 2k-2 (with pics!)

http://www.gasgasrider.org/forum/showthread.php?t=5124

 

[popscycle]

thanks for all the help guys, as you probably can tell i'm not much of a mechanic, just trying to save a few bucks. I assume the threads on the weights are LH. How do i tell how much flywheel weight is on the bike? Is the weight marked inside ?

 

[GMP]

Thats a 14oz weight, I have the same one. Thats the biggest weight you can put on the 2K-2.

Timing could be a little off, but not a lot.

I would say at this point if you are uncomfortable with the power delivery work on the jetting. There is a lot of info here. Post what you have for starters.

 

[skid jackson]

how does messing with the timing affect power delivery??
sounds like something I might play with.

 

[stainlesscycle]

turn the ignition plate back (counterclockwise) about 1mm at a time. and see how that affects power delivery. it's hard to tell where your timing is set from the pic, but it looks a bit advanced. check your plug now and see if there's any tiny shiny metal bits on it (too far advanced). if you back it up it should get mellower all over. the big hit could also be jetting/needle/pipe/ or possibly previous owner cylinder mods.....

 

[mtnmanseth]

Thank goodness for Google I found this thread. I have the same setup as popcycle on my '05 EC300 and during motor removal for what I thought was a bad bottom end bearing(s), I found that the weld/pressing that holds the black weight/cover had failed leaving the black metal "cover" part to flop around on the bolt head! The noise that makes is terrible metal-on-metal, which I thought was a major bearing blowout. Turns out it was this black metal weight/cover piece has failed. The black part is the flywheel weight, right? Who makes this product and do they fail a lot like mine did? And it's taken the place of the normal nut as eff stated, right?

I think I need to buy an air impact wrench to pull the black nut now, or buy an engine block to substitute for the spark plug, right?

If this was the noise I heard, and I've already bought all the parts and tools and yanked the swingarm to do the bottom end, should I continue with the rebuild anyway?

A million questions. Thanks for all answers.

Confused in California

EDIT: Ooops just re-read GMPs post that the black part is a 14 ounce FWW. Got it. I need to get my broken one off and buy a new one... where can I get a 14 oz FWW for the 2k-2 that doesn't break off the mounting bolt, please?

 

[mtnmanseth]

Anyone have a suggestion/source for a 10-14 oz replacement flywheel weight for an '05 EC300?

 

[Tbucket]

Anyone have a suggestion/source for a 10-14 oz replacement flywheel weight for an '05 EC300?

http://checkpointoff-road.com/store.html

They've a 12oz

 

[mtnmanseth]

http://checkpointoff-road.com/store.html

They've a 12oz

Good price for the ideal weight I'm looking for. Ordered one. Thanks Tbucket.

 

[CanGasser]

Good price for the ideal weight I'm looking for. Ordered one. Thanks Tbucket.

Did you endup installing the checkpoint, wondering how it installed?

 

[mtnmanseth]

Did you endup installing the checkpoint, wondering how it installed?

Yep, it went on very easily. Just zipped it on with an impact gun. Never an issue since and performs great. All of Checkpoint's products are excellent quality IMO. I recommend the over-sized powervalve cover for noticeably more torque right from idle (on the 300)!

 

[CanGasser]

Yep, it went on very easily. Just zipped it on with an impact gun. Never an issue since and performs great. All of Checkpoint's products are excellent quality IMO. I recommend the over-sized powervalve cover for noticeably more torque right from idle (on the 300)!

Ok great just couldn't tell from the pic on the web site I just ordered one. Not sure I want more bottom power but do you find it lofts the front wheel easier with less throttle and clutch. Not sure I want more power this thing is an animal.

Thanks Scott