I see from your video that you appear to be building the engine up indoors…what type of inducement do you use to stop the wife kicking off and ultimately being in a bad mood for the rest of the week?
Great Video. Best I've found on youtube for showing a rebuild. Quick question though, what are you using in the syringe? Is it just some lubrication to allow better movement or is it some special stuff? Thanks.
Hi, great videos mate! Thanks a lot! I have question, what thickness of cylinder base gasket you use? I got three thickness, so i was wondering what should i use? Maybe the thinnest one? Thanks!
Hi ! I use the thinnest one (0,3mm) to get closer to the recommended squish of 1,5mm. In fact with the 0,3mm gasket I have a squish of 1,7mm. If I put the 0,5mm gasket I would have a squish of 1,9mm, etc... More you reduce gasket thickness more you increase torque.
Romain Quiban Thanks man.. Yes, as I think so.. I put thinnest one, so i'll see what's going to happen.. I'm not going to measure compression space, but i'll see when startup engine how it's going to sound, power output, etc.. Thanks for info anyway.. Great work and videos. You done job well, like a pro. :) Keep great work. And.. what camera did you use for filming?
If cylinder and piston is in good condition, its only waste of money to change them to new ones. 2 stroke piston can take many many hours more than you expect. If you know even little about 2 stroke engines you can have great and long driving times with them :D
can any 1 help me pls iv got 1994 sem aprillia rs rotax 123 (ingnition icu coil is broken) 4 wires red/green/black/and 2 into 1 red,white strip i changed coils but which wires go were? on High Performance Racing HT icu Ignition Coil thxxx
so many options of pistons on the market, especially @pjme. How do you know which one is best for your application? planning to go 34mm carb w/supporting mods...
Depends where you're at (Currencies are obviously different) but PJME stock piston kits for around 120GBP (Piston, Rings, Gudgeon Pin, Little end roller bearing), a little more coin if you're after OEM stuff
Scott Mc The four cylinder nuts are very hard to remove because of the frame, you will need a shorten spanner. And that's just the beginning, after there are snap rings to remove and put back without loose it, etc ... In my opinion it's better to remove the engine from the frame. You'll work much more serene.
The cylinder head o-ring is missing in this video yes. I put the sequence that I also use in the video of squish measuring, where the o-ring is not needed. No worry, the o-ring has been settled for the real reaasembly :)
![[Aprilia RS - Rotax 122] Top end engine rebuild](/img/logo.svg){kind=logo}
