Messages

1

General Two Stroke Talk / What are the symptoms of the big end bearing worn?

« on: August 16, 2013, 11:23:55 AM »

Roll on ride time then!

2

General Two Stroke Talk / What are the symptoms of the big end bearing worn?

« on: August 15, 2013, 12:11:05 PM »

Mostly for con rod but really shot crank bearing could introduce rotational slop -- but will also allow the crank to wobble a bit.

Bottom line here with this check -

- if you feel sloppyness then you have a problem. You need to tear it down. End of story.
- if you don't feel slopppyness then you still *might* have a problem.  If there is other evidence then pull the jug. Otherwise, go ride.

Do you mean, crank bearings or conrod bearing?
The only way to correctly determine wear is to check the specs and measure with correct instruments as per manual.

Ride is on the menu! thanks for your help guys

3

General Two Stroke Talk / What are the symptoms of the big end bearing worn?

« on: August 14, 2013, 08:31:53 PM »

Pree much what everyone else said. When I got my new katoom, I got paranoid about the noise it made which was vid posted here: http://twostrokemotocross.com/forum/technical/engine-knocking/

Mine too drops right off if I pull the clutch.

With regards to big end wear, the easiest way to tell, like everyone said, is to give your flywheel a jiggle. If you're not sure with taht, then pull your cylinder off and take some feeler gauges to the big end from there. Compare to clearances in either your manual or what someone can quote from their manual. My POA would be: Flywheel check, pull cylinder and check for up/down play in the conrod (side to side is normal, to a certain extent) then feeler gauges if you're still not sure.

Good luck.

Flywheel turns smoothly and bike starts 1st kick with plenty of power! All thats left to do is RIDE

4

General Two Stroke Talk / What are the symptoms of the big end bearing worn?

« on: August 11, 2013, 05:21:06 PM »

I've been told by a dealer that my big end may be worn which is in a low houred bike. The bike does slightly rattle but if i pull in the clutch it nearly completely disappears.
Any thoughts on this much appreciated 
Cheers,
Jared.

5

General Two Stroke Talk / Stopped the famous Suzuki RM 2 stroke clutch trouble? I thought I had.

« on: August 11, 2013, 05:12:44 PM »

Great stuff mate! Check for play in the lever as my clutch cable was tight! also the hub was notched to hell! Any way after a good five 20 minute sessions at my local track its all fixed! Happy days!

6

General Two Stroke Talk / Stopped the famous Suzuki RM 2 stroke clutch trouble? I thought I had.

« on: August 08, 2013, 04:25:16 PM »

Put new hub in my 2008 Rm250 today and it stopped the clutch from grabbing. But with the engine off, if you try to kick start it in gear it seems to grab! Also with clutch out there is a loud rattle sound but it stops once clutch is pulled in.

Any thoughts much appreciated,
Cheers,
Jared.

7

General Two Stroke Talk / Original piston?

« on: May 31, 2013, 10:14:56 AM »

I think all in all I should have checked the top end when I bought the bike (used) because I used it for approx 30 hours so god knows how many hours the piston has had on it! Poor thing.

Cheers,

Jared.

8

General Two Stroke Talk / Original piston?

« on: May 30, 2013, 11:40:41 AM »

Well I bought it used and im very generous with oil so the richness is my doing. New piston is going in while its in the shop. I have been informed that the cylinder will need replating next time though!

9

General Two Stroke Talk / Original piston?

« on: May 30, 2013, 11:00:23 AM »

Anyone know what caused all the pitting and black deposits? or just High hours?

Any feedback greatly appreciated.

Cheers,
Jared

10

General Two Stroke Talk / Original piston?

« on: May 30, 2013, 10:57:23 AM »

This isn't in its peak I don't think! HA

11

General Two Stroke Talk / Newbie in need of mechanical advice

« on: May 20, 2013, 10:55:41 AM »

Thanks man!!

12

General Two Stroke Talk / Newbie in need of mechanical advice

« on: May 20, 2013, 10:10:16 AM »

Hi guys,

I've had 30 odd hours use on my rm250 since buying it and because it was second hand I am unsure about the top end. (I am not riding competitively "YET") I thought it would be a good idea to think about getting a fresh top end just i know its all good. At the moment there is no signs of any trouble as it starts promptly and has POWER. The concerning bit is that when going through the service manual it states that i have to completely remove the exhaust valve, or is that when inspecting the cylinder? I don't want to have to go through with it if I don't have to because its a lot of work. Like i say I'm a rookie but i do have the knowledge to change a piston and what-not. I will be relieved if i only have to undo the exhaust valve cover and nut!

Any info would be greatly appreciated,

Jared.

13

General Two Stroke Talk / troubles troubles troubles

« on: May 20, 2013, 10:01:22 AM »

14

General Two Stroke Talk / troubles troubles troubles

« on: May 08, 2013, 07:24:54 PM »

Apparantly slightly different unfortunately 

15

General Two Stroke Talk / troubles troubles troubles

« on: May 08, 2013, 01:24:59 PM »

What i meant to say was i bought some online and the company rang me and whoever told me yesterday over the phone that they stocked some rm250 wheel sets but it was infact RMZ