Lyndon Posted May 18, 2016 Author Share Posted May 18, 2016 Sure won't. It's a long way away but. 1 Link to comment Share on other sites More sharing options...
Guest nunans Posted May 19, 2016 Share Posted May 19, 2016 I have done my gearbox. All was good. A bit of fiddling with the three diaphragms to line them up. seems odd the middle one can't be centered and relies on the others to keep it in place. There is some offset wear because of this. But it clearly works as it's done 1740 hrs and is in very good Nick . Can't believe the new halves were 70 dollars. I still can't assemble my engine as I have issues with cam end play. This is taking a long time to sort but hopefully by the end of the week it can be sorted. [ATTACH=full]42238[/ATTACH] [ATTACH=full]42239[/ATTACH] [ATTACH=full]42240[/ATTACH] [ATTACH=full]42239[/ATTACH] [ATTACH=full]42238[/ATTACH] So ehen you did the gearbox, were any extra shims required? I did mine (on another engine i had) and found it was already at exactly 1mm and didn't need any changes, Link to comment Share on other sites More sharing options...
Lyndon Posted May 19, 2016 Author Share Posted May 19, 2016 The clearance was perfect. On a note the piston gudgeon circlips are just about impossible to install in a manner that would not be considered rough. I have made a tool and done some trial runs with the old circlips on the bench. I have yet to try it while the piston is on the rod. The special tool is over 500 bucks but does allow you to install the piston in the barrel on the bench which would be very nice. My way won't allow that as I'm thinking I will need all the room plus some. Hopefully on the weekend I will have a go. 1 Link to comment Share on other sites More sharing options...
Lyndon Posted May 20, 2016 Author Share Posted May 20, 2016 My tool works fine. But fidley but I'm very happy with the circlips. Link to comment Share on other sites More sharing options...
Blueadventures Posted May 20, 2016 Share Posted May 20, 2016 Making some progress. I intend to prime the oil pump and fill the engine prior to fitting the top end. That way I won't wipe off all my cam lube. Then I should be able to fire it up with minimal engine turning.Lyndon Hi Lyndon what brand is the blue filter? Cheers Mike Link to comment Share on other sites More sharing options...
Lyndon Posted May 20, 2016 Author Share Posted May 20, 2016 It's a four dollar wesfil. Link to comment Share on other sites More sharing options...
Lyndon Posted May 20, 2016 Author Share Posted May 20, 2016 Fitting the heads with out the studs makes it a breeze so the push rod orings seat nicely. I've actually bonded with this engine. It's a very nice bit of kit. Link to comment Share on other sites More sharing options...
Lyndon Posted May 23, 2016 Author Share Posted May 23, 2016 Done one rebuilt Rotax. What a lovely little engine to work on .Carbs rebuilt. Gearbox. Long motor. Drip trays fitted. Should run like a treat. Link to comment Share on other sites More sharing options...
rick morawski Posted May 23, 2016 Share Posted May 23, 2016 Done one rebuilt Rotax. What a lovely little engine to work on .Carbs rebuilt. Gearbox. Long motor. Drip trays fitted. Should run like a treat. Looks awesome, well done Lyndon! Hope to hear about a successful run up soon. Link to comment Share on other sites More sharing options...
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