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The Shop
jlv148: The power valve default /rest position is now all the way up. Need to preload the power valve spring. It seems that it is not preloaded now and keeps the power valve all the way up for this reason.
Should I order original OEM bolt and washer for the "locking" or can I use a regular bolt for this missing part? At least I would need to know the exact lenght of the bolt.
Below is a picture of your frame, the frame on my 1990 and another 92 RM frame and I circled where your frame differs from the other two frames. What is the serial number of your frame as that will tell you the year. Or, it could be that Suzuki offered a later 92 model with a revised frame (they did this years ago back in 78 I remember when they offered the RM250 in two models that year (C1 & C2)). Also, sometimes the European market gets the latest bikes a year ahead of us in the states. But if you look at the photos, you can see that your frame is square tubed while the other tow are round (two different frames). Mike
https://www.bikepics.com/pictures/2206129/
https://www.bikepics.com/pics/2006/05/01/bikepics-577411-full.jpg
1991 model was still made with round tube:
https://www.bikepics.com/pictures/751724/
1992 RM-250 was still made with round frame pipe.
Thank you for clarifying that. I was not into bikes back in 1992, I had left the sport in 1990 so I am catching up on the different changes over the years. The other reason I am asking all these questions about the frames is because I have Works Suzuki RA swingarm for a 92 RM125 that I want to put on my 1990, so I am crossing my fingers hoping the 92 swingarm works on my 1990. Bu the way that looks like Stefen Everts 92 works RA125 in the last set of photos you sent (I have that same swingarm). Thanks again, Mike
Yesterday I opened the other side of the power valve with tension 'knob'. The power valve adjustment /tension spring was broken /cut in half. It was also missing it's spring fitter /spacer. This explains very well why the power valve arm / rod was already in full up position.
I ordered all missing parts yesterday from Suzuki Europe. The parts were basically free and the delivery time is only 4 days.
One more question concerning the bolt that you are referring above. Since the engine is already attached to the frame there's no space to open the front power valve cover to see the valve movement, is there a certain point where the power valve should be aligned when the bolt is tightened? i.e. should I somehow preload the valves before I install the 'locking' bolt and spacer?
p.s. here's the troublemaker, part II:
p.s.2:
It keeps on wondering me how people treat their bikes. They just throw parts away and keep on riding although many vital parts are missing. Makes me mad!
I'm just curious. From where did you manage to find the Works Suzuki RA swingarm? That's so cool.
I've only seen one for sale here:
http://www.mastercross.net/accessori2.php?lang=en&m=SUZUKI&t=speciali&i…
No chainguide in this either.
Even more important on the RMX pv system.
Pit Row
Any idea what this marking in cylinter tells?
I couldnt tell you on the stampings.
That works swingarm I told you about arrived today (see below picture). And though it's for a 92-95, I think you are right and that it will fit my 90 RM. The carbon fiber sheet arrived the day before so I'll get started on making the carbon fiber chain guide. Mike
Since there's no any good, detailed pictures of that swing arm, maybe you could take more detailed, high resolution images with welding measurements. This way the rest of us could make cool replicas.
https://www.youtube.com/watch?v=VGLLSUtXQyc
Also got Apico brake pedal tip from UK. Needed to modify and custom fit it but it was pretty straightforward.
Where did you end up sourcing all of the decals? I know you said Finland and EVO-MX but it looks like you have multiple different types - yellow and white!
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