Great explanation for so many forums where there is talk about changing only the 60mm stroke crankshaft in the original cylinder to gain UP TO 18CV!!! Finally all the real information about the O-tuning 60!!! Thanks friend!!!
Done the whole package: 60mm crankshaft, windows adjusted, exhaust raised 2mm, 0.5 head gasket. Runs with SI24.24 and Polini box. Accelerates nicely, feels like th peak power is around 6500rpm but as soon as it reaches 6800rpm it dies a bit and won't accelerate any further. Feels kind like a rev limiter is activated or the clutch starts slipping (but it's not). I've swapped stator, flywheel, CDI and tried to move ignition timing to 18deg but it still behaves the same. Any clue what could be the problem? It always happen exactly at 6800rpm, regardless uphill or downhill, choke in/out. The engine feels like it still should have a lot of power, the performance cutout is immediate. Is it fuel supply problem? (done only 2,5mm main jet drilling, and short fuel hose - fuel tap not modified) Wrong jetting? Or just the original cylinder limitation? (ports cross section etc.)
@@FreakMoPed8 checked fuel tap, forgot it was also otuned: long pipe closed, holess drilled bigger. Will have investigate further. Next candidate is exhaust port, it was just rised, not widened.
@FreakMoPed Thank you for this detailed guide, always having good time learning from your videos. I have one question, can you share what 60mm crankshaft you recommend for this kind of setup? (same as your "FMP malossi SPORT 221 ROTARY setup" in the parts list you have made in SIP? ) Long Stroke Crankshaft MAZZUCCHELLI K2D for Vespa 200 Rally VSE1T 33997 ->/P200E/PX200 E/Lusso/MY/Cosa disc valve stroke 60.0mm conrod 110.0mm Standard - con rod pin 16mm valve timing: 138°/6° post TDC
I'm going the FMP long stroke 200er o-tuning way. What jetting do you recommend for standard SI24.24 carb whith PoliniBox? Also, what ignition timing to use? Probably not standard 23* anymore?
Great explanation for so many forums where there is talk about changing only the 60mm stroke crankshaft in the original cylinder to gain UP TO 18CV!!! Finally all the real information about the O-tuning 60!!! Thanks friend!!!
Thank-you for sharing your knowledge and your humour.
🍻
Is there anything you don't know 😂 truly brilliant viewing..... legend
😄 a lot i dont know, as we never stop learning, but quite abit about vespa tuning 🍻
Salam mesin kanan ✌️🇮🇩
Another great video. Thanks!
Done the whole package: 60mm crankshaft, windows adjusted, exhaust raised 2mm, 0.5 head gasket. Runs with SI24.24 and Polini box. Accelerates nicely, feels like th peak power is around 6500rpm but as soon as it reaches 6800rpm it dies a bit and won't accelerate any further. Feels kind like a rev limiter is activated or the clutch starts slipping (but it's not). I've swapped stator, flywheel, CDI and tried to move ignition timing to 18deg but it still behaves the same. Any clue what could be the problem? It always happen exactly at 6800rpm, regardless uphill or downhill, choke in/out. The engine feels like it still should have a lot of power, the performance cutout is immediate. Is it fuel supply problem? (done only 2,5mm main jet drilling, and short fuel hose - fuel tap not modified) Wrong jetting? Or just the original cylinder limitation? (ports cross section etc.)
u already know next step:.fuel tap.of course. then see.
@@FreakMoPed8 checked fuel tap, forgot it was also otuned: long pipe closed, holess drilled bigger. Will have investigate further. Next candidate is exhaust port, it was just rised, not widened.
secrets reveals with FMP!! thx
Thx , love you
thanks for the vid mate. I wonder why you didn’t open the fake ports . Maybe I missed this part. Cheers
its not needed.
@@FreakMoPed8 ok I wouldn’t have thought that but I guess you got it already tested 😜
is there still any possible small blowback or fuel spit if the rotary valve tolerance is 0.05 mm?
yes, there is always a bit.
@FreakMoPed Thank you for this detailed guide, always having good time learning from your videos.
I have one question, can you share what 60mm crankshaft you recommend for this kind of setup? (same as your "FMP malossi SPORT 221 ROTARY setup" in the parts list you have made in SIP? )
Long Stroke Crankshaft MAZZUCCHELLI K2D
for Vespa 200 Rally VSE1T 33997 ->/P200E/PX200 E/Lusso/MY/Cosa
disc valve
stroke 60.0mm
conrod 110.0mm
Standard - con rod
pin 16mm
valve timing: 138°/6° post TDC
mazzu or sip
I'm going the FMP long stroke 200er o-tuning way. What jetting do you recommend for standard SI24.24 carb whith PoliniBox? Also, what ignition timing to use? Probably not standard 23* anymore?
21 degree
mj 128 ij 2.9-2.7
Filter with holes or without?
@@FreakMoPed8 Filter with holes (5mm&7mm) or no holes?