Recent content by Rauno Vekkila

Hi, Can anyone verify by the picture what may be difference between those headbolts? I have two cases w. polished and one with those darker ones. Origin unknown. Thanks

https://www.ebay.com/itm/204133956429?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=XeenneiaSDW&sssrc=2349624&ssuid=jFhtaIsdSl6&var=&widget_ver=artemis&media=COPY Try this guy. Reliable seller.

Thanks MaxMidnight. Obviously I need to have an eye exam

Hi, I have a block where the crank end bearings are damaged. Could build new ones but what is the proper clearance ? 0,001" ? Does anyone know ?

I’ll have these in my 1992. It need also wires w. resistors

Hi, thanks for the info. I’m worried about my 0.05mm ’cos the are also some scratches on the surface which I don’t like. I’ll have to think about this. New crank would be the best option but (good) used parts are hard to find in Finland 😕

Hi, I think diameter 36.75mm(+25) means that you’ll have to grind every crank journal app. 0.25mm under and check clearances after that. The journals are polished after the clearance is close enough factory specifications. Product quality is my main concern here 😅

Hi, Has anyone ever tried to fix the engine with those bearings (manufactured in China I presume) ? https://www.ebay.com/itm/155118439754 I have too much oil clearance in the first main bearing even with the thickest factory bearing (0.05mm/0.0019") and only option is to grind that surface...

Thanks guys! This was really helpful. Rauno

Hi, Silly question perhaps: but how that colour code turn into a spare number? For example blue main bearing, is it 1FK1141601 (first/uppermost option of the list of spare parts suppliers? There is no mention of colour codes). Just want to make sure before ordering anything :) I'm going to...

Hi, Thanks a lot Fire-medic! That was just the issue here. Rauno

Hi, I'm overhauling that cylinder with new seals but noticed that pit on the pistons pressure surface. Is there any of that on the brand new piston? Regards, Rauno

Ok, thanks ! I thought that crankpins basic circle is grinded offset (and thinner) and used different bearing method.

Oh yes, I’m from Finland. Most likely I will find used spares from here but this is definitely not the only issue..new cases came with the project engine. Thank God my bikes main engine is in working order so I don’t have to hurry with this beaten bas****

Thanks. I thought that Helicoil option also. Perhaps cut some material down with lathe and set shimms. First I’ll ask for a professional opinion on the crank is it worth saving.