Messages

1

Technical / KTM Cylinder-Piston sizes.

« on: June 07, 2012, 07:52:26 AM »

Are you 100% on that? It's just i have a 250SX cylinder which is labelled a 3 and it has a 66.35 mm piston that came from it which is an A, Im asking as im doing the top end on my 300SX kit and the cylinder has a 1 on it and there's currently a C size piston in it!, from what i can gather it seems the other way round?

2

Technical / KTM Cylinder-Piston sizes.

« on: June 06, 2012, 09:55:27 PM »

Doe's anybody know which size piston i should be fitting to a size 1 cylinder?, As far as im aware cylinders come in 3 sizes, 1,2 and 3, its stamped on the skirt of the cylinder. Also pistons come as A,B and C.

Is it as follows?

1=C
2=B
3=A

or the other way round? 1=A, 2=B and 3=C? This would be the logical way but i have a feeling it's the other way round.

Can anyone shed some light on this for me?

3

General Two Stroke Talk / Got to see a KTM 300 in action this weekend

« on: May 24, 2012, 09:20:36 PM »

You should try and get a ride on a 300 chump.
I went from a RM250 to the TM300 and the low down torque is night and day between the 2.
You can crack the throttle open from very low revs and the 300 will just pull it self out of corners were the 250 will bog down or you have to use lots of clutch.
Just like what you saw.
When the track is slick a 300 gets better traction.
I am qiucker and get less tired on the 300 then I was on the 250.

I have to agree, im much faster on my 300SX than my old YZ250. It's much better in the wet, i think im quicker as im not having to clutch it out of corners as there's always power there! alot less going broad sideways and loss of traction but if i feel like it another few mm of throttle and she will spin on a dime!

4

General Two Stroke Talk / Scalvini Exhausts

« on: March 17, 2012, 10:50:48 PM »

Sorry for a repost as these are also in the open forum but the Scalvini arrived on time and is mounted to the 300SX! Will post a pic of the Akropovic so you can see the extreme difference in length although the Scalvini is the MX Version, It came with a mounting bracket that i discarded and bolted the mount straight to the subframe. The Akro was just to long for me and didn't look like a smoker pipe, also it smoothed the power out too much so had to go!

Here she is and im very happy with it so far. Have yet to try it on the track though!!





Massive Akro:

5

General Two Stroke Talk / Scalvini Exhausts

« on: March 13, 2012, 11:12:06 PM »

6

Technical / Whats he truth in terms of premix ratio?

« on: March 10, 2012, 05:24:55 PM »

I run 40:1 in my sx, Been using Putoline mx7 and motorex with pretty good results. Im just trying out some Castrol A747 as apparently its the best of the best, Im not sure as yet but time will tell. It smells awesome though!!