Looks like this one is back on the market?
https://www.jmpbdele.dk/exhaust-proma-city-power-vespa-ciao-long-model.html

Hopefully not as bad as the Tecno version that has been on the market for some time.

Anyone know more? 🙂

Nothing new? 🙂

Have you tried the original flywheel, to check if you have less vibrations?
The Vespa engine uses the flywheel as a part of its final balance factor, because the crankshaft has the rotary inlet cutout where the counterweight has to be.
To my understanding, the pinasco flywheel is neutrally balanced, the original ones aren’t.

And btw, i only buy…[Lees meer]

Any news?

Fits perfectly, should have bought more  😳

It fits very nice with an original case with enlarged intake, good timing and superb quality.

I wouldn’t run it in a speedengine, the inlet timings become very high.

Ok, thanks for the info.

Florian :

Kotter, kotter, kotter..

Nabewerkt met een schuurrol.

Is that the Malossi manual mill? If yes, how do you like it? How much time does it take to finish one housing?

I’m running a XPZ 1037 with the small clutch and a 80 mm pulley.

I have tested the Polini 46 mm and the DR 43 mm on the same moped with the same setup. The difference is small, the DR is better at over revving than the Polini, i had a little higher topspeed with the DR. The Polini has more power all over the whole range otherwise, but only a small amount.

If you have an original engine case, i would save the…[Lees meer]

I will make sure that all ports are cleaned up and chamfered before plating, but i actually think it looks very good right now. I must have been lucky, the build quality looks good on mine. Just the old plating is totally scratched up, i still think it’s due to chrome rings. It looks just like an old hard chromed Kreidler cylinder i’ve seen, that…[Lees meer]

I have ordered a new piston now and i’m sending this for re-plating.

Any comments on the piston to bore clearence?

Thanks for your answer. I think i will repair this cylinder in the future, with a good thick Nicasil layer.

But what piston can i use? Now that i have studied some of the pictures here in this forum, it looks like i don’t have the original piston. The pictures from Jockoballa show a small “lubrication/cooling window” next to the…[Lees meer]

Wilk, it’s just for everyday use with original “brom” parts. I have a second subframe that i’m going to use with a faster engine, no pedals and centrestand, but that’s a different story 🙂

Jelle, my subframe looks different from yours, both my rubbers are on the inside.

UPDATE:

Got it today, very nice quality and perfect fit. Very…[Lees meer]

Thanks for the tip! I looked on Sitos page yesterday, but could only find new Ciao and Si exhausts.

A bit of research and i found the Sito 0252 model, for the faster Bravo models. Like this…[Lees meer]

Great, thanks!

EDIT: I can confirm that they fit, but they seem very loose in the sealing lip, hope they can hold the pressure.

http://12v.dk/wp-content/gallery/bravo-stel/2016-09-22-22-40-08.jpg