In this video, we show you how to rebuild a Puch E50 engine. This rebuild includes installing a Puch Gilardoni 74cc kit. All parts are available at 1977mopeds.com.
great reference vid, love me some 77. A little trick when case matching... Instead of using a marker, cover the face with blue painters tape, then with your gasket and exacto, cut out the tape where you are removing material. It makes a much sharper line, and when your bit hits the tape, it will fluff up a little and you can clearly see you are at your edge.
I think the direction of the seal on the main gear is wrong. the green side should be on the outside, sealing it off and keeping the dirt out. I never saw one puch maxi moped with the seal on the main gear installed in the way this video shows. And doesn't the brass spacers get stuck due to the heat? That's so far the only notice. I believe the rest is all done in the correct way.
No. That is how they come from the factory. .......but these are dual spring seals so it shouldn't matter. I put 8 of those brass spacers on and it did get stuck, I got it off with a rubber mallet. The MLM SPACE SAVER studs are awesome on a Polini but they are too wide for a Gila :).
I used porting wax for my carbide cutters keep them clean you don't lose your indication mark like W40 can wash it away.... WD40 on the stones keeps them clean
@maxmojo2 ops.. ha-hem :-) Gilardoni makes only cylinders .. Btw, i like this old 2 strokes engines, even if is austrian ahah and the international passion for mechanic and music.
@1977mopeds I use same method to fit main bearings but the pro's say to use a device to push them on. also its good to match the transfer part of cases so that they line up with crank webs so that there is a smooth passage if that makes sense?
reeed valve but only 4 transfers, why not have boost ports above reed valve? and the tiny holes in the piston to feed crank case, could be bigger or cut a slot down cylinder? Interesting little engine though.
Hi there... I have a puch maxi and the bearings just failed so I'm hopefully am going to rebuild the motor... How much money (dollars) is it to get new seals and bearings for the whole e50 motor