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Ok cool, nothing else has to be done? I noticed something about the power valve, can I still use my old one in the new case
Depends which KTM you have.Mine is a 1990 Power Valve is different to 1991-1997
I have to put Shims under the Power Valve Adjuster, the 1994Aluminium Cover was a little different to the 1990 Magnesium Cover
Rightio ok, I have a 1990 and I’ve brought a 96 case with the lower power valve linkage setup
Am I able to use the 96 case and powevalve setup? I could only see the difference in the 2 springs as opposed to the “drum” and a spring setup, would that be correct? Appreciate the help
The Shop
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As i remember the right is a 1990 the left a 1991>onwards
You have to measure from the Clutch Cover sealing surface down to the Waterpump Bearing, there was 1Milimeter difference from Aluminium to Magnesium Cover
Hey bud, I just picked up a ‘90 KTM 250 MX yesterday but don’t know much about it and I’m not sure on what parts are interchangeable through the years. Could I get some help pls? From my understanding, from ‘90 to ‘94 a lot of the parts are interchangeable but I’m not 100 % sure.
Hello, the 1990 Engine is Special it’s the First year of the 546 Engine Type
Kickstart-Clutch- Pover Valve and i think Main Bearings are different to 1991
Hallo KTM Two Stroke, ich habe gerade deine ganze Storry gelesen. Hut ab, es ist der Wahnsinn wieviel du in Details gesteckt hast, deine KTM ist Hammer! Ich würde dir gerne eine PM schreiben, bin aus dem Raum MUC und ebenfalls Besitzer einer 90er. Vielleicht kannst du mich kontaktieren. Beste Grüße Jo
Servus kein Problem schick mir eine Nachricht
Servus,
Das würde ich gerne nur kommt die Meldung: Sorry, this user is not accepting private messages.
Ich bin immer noch ganz baff von deinem tollen Aufbau und stell mir nun die Frage ob ich ein Fehler gemacht habe mit dem 90er Modell. :-/
Versuch nochmal, müsste jetzt funktionieren
Hello, I was the proud owner of a 1991 300 MXC. Some of the best days and some of the worst. Several times it just stopped. Pulled, pushed, kicked nothing. The next day 1st kick. Power valve. 3 times piston hit powervalve. Flapper broke off. Piston ring groove damaged. Motor was always operational. Broken piece bounced around in the pipe. Last time raced the bike the day after the valve broke. Did not remove the broken bit until after. I cracked the fork axel clamp. It was welded. Never an issue. Inconsistent running. Day to day. Temp to temp. Altitude to altitude. Never got to change the ignition. Always worked really hard on pressure testing the motor. The powervalve will leak but nothing more than micro scopic foam anywhere else. I used Hondabond 4 (unique Silicone product) to smear all paper gaskets and ignition manifold.
Good luck on all your projects.
Pit Row
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