OP
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Veni, Vidi, Posti
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Veni, Vidi, Posti
Joined: UTC
Posts: 7058
Location: Tega Cay, SC
UTC quote
I recently picked up a P200. I don't know what the future will hold, but as of now, I just want to make it a running and safe ride. And while I watch in fascination of how these engines can be taken to a much higher level, I don't possess the knowledge or funds to do so. I am, however, very interested in the concept of O-tuning which I think means doing the most with what you already have. I have seen mentions of this thru different threads over the years, so finally to my question: is there a definitive thread, video or information source on this subject relating to these 2stroke Vespa engines? This would of course make for a great Wiki subject like the one presented on the SI jetting and tuning guide. It would be a lengthy endeavor, I'm sure, and would almost require the patience of Job and wisdom of Solomon. Anyhow, any thoughts or direction would be appreciated. Thanks.
⚠️ Last edited by Tierney on UTC; edited 1 time
@bajarob avatar
UTC

Addicted
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
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Posts: 933
Location: Ventura, CA
 
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@bajarob avatar
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
Joined: UTC
Posts: 933
Location: Ventura, CA
UTC quote
Tierney wrote:
I recently picked up a P200. I don't know what the future will hold, but as of now, I just want to make it a running and safe ride. And while I watch in fascination of how these engines can be taken to a much higher level, I don't possess the knowledge or funds to do so. I am, however, very interested in the concept of O-tuning which I think means doing the most with what you already have. I have seen mentions of this thru different threads over the years, so finally to my question: is there a definitude thread, video or information source on this subject relating to these 2stroke Vespa engines? This would of course make for a great Wiki subject like the one presented on the SI jetting and tuning guide. It would be a lengthy endeavor, I'm sure, and would almost require the patience of Job and wisdom of Solomon. Anyhow, any thoughts or direction would be appreciated. Thanks.
I think that would be a great idea in the Wiki. Sometimes I spend a lot of time searching for something I know is here but to no avail. I'm not bad in the mechanical department but my computer skills linger at a toddlers level. That would be so much easier to find.
@qascooter avatar
UTC

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79 P200E (Ruby), 62 Allstate (B-62)
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@qascooter avatar
79 P200E (Ruby), 62 Allstate (B-62)
Joined: UTC
Posts: 4285
Location: Florence, OR
UTC quote
I think this is a GREAT idea!

WhiteOneRacing has a great vid on the subject. They changed its title recently and it seems that they have a series of other videos (carb tuning, etc) but I haven't checked them out yet.

But the O-tuning vid is great, and I can attest to it's validity. I did what they recommended and it really woke up my P200. I did differ on the head though. They sanded theirs down and added a gasket. I just sanded a little.

@bajarob avatar
UTC

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1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
Joined: UTC
Posts: 933
Location: Ventura, CA
 
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@bajarob avatar
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
Joined: UTC
Posts: 933
Location: Ventura, CA
UTC quote
qascooter wrote:
I think this is a GREAT idea!

WhiteOneRacing has a great vid on the subject. They changed its title recently and it seems that they have a series of other videos (carb tuning, etc) but I haven't checked them out yet.

But the O-tuning vid is great, and I can attest to it's validity. I did what they recommended and it really woke up my P200. I did differ on the head though. They sanded theirs down and added a gasket. I just sanded a little.

I would also like to see a dedicated touring engine section with everyone's favorite setups including jetting that worked for them and fav exhausts with best RPM ranges. That would make life easier for sure.
UTC

parallelogramerist
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parallelogramerist
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Just keep in mind that when the power goes up, the reliability goes down. I would say bare minimum for upgrading the rest of the engine to an O tune would to also install a fancy billet clutch, GS piston, and at LEAST $100 of individual jets and carb slides. From there you'll also want to make sure you're front brake is in tip top shape. Also go through your entire transmission and make sure there's zero nicks or chips in the loose transmission gears when you go to replace the cruciform. Also leave yourself enough space here on the modern vespa website to have a 3~6 page thread on why you're having difficulties dialing in the jetting correctly.


just sayin
@orwell84 avatar
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Location: northern New York
 
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@orwell84 avatar
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Location: northern New York
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O-tuning is harder than putting together a kitted engine. It might be cheaper, but it's not free just because you are working with what you have. If you are new to Vespas, getting a stock engine running reliably will keep your hands full. When you've got that down, you will have a better idea of what your next project will be. Take small steps and see how like it.
@qascooter avatar
UTC

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79 P200E (Ruby), 62 Allstate (B-62)
Joined: UTC
Posts: 4285
Location: Florence, OR
 
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@qascooter avatar
79 P200E (Ruby), 62 Allstate (B-62)
Joined: UTC
Posts: 4285
Location: Florence, OR
UTC quote
I was thinking about O-tuning, and to add to WhoDats list:

Carb bowl passage opening to allow more fuel.
Fast flow fuel tap
Short 4th (I'm not running one yet)
Timing.

MrFreakMoped.has many videos on the subject as well as WhiteOneRacing. It'd be good to identify the specific vids pertaining to O-tuning from these two YouTube channels...
OP
UTC

Veni, Vidi, Posti
Joined: UTC
Posts: 7058
Location: Tega Cay, SC
 
Veni, Vidi, Posti
Joined: UTC
Posts: 7058
Location: Tega Cay, SC
UTC quote
Thanks for all the suggestions, just what I was for. I'll check out the links and try to keep an open mind. This is all just curiosity on my part with a possibility of using some of these techniques on a future project.
@fastfrog avatar
UTC

Hooked
PX125,200, T5, SS180,TS125 and some more...
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Location: Paris, Taxes!
 
Hooked
@fastfrog avatar
PX125,200, T5, SS180,TS125 and some more...
Joined: UTC
Posts: 203
Location: Paris, Taxes!
UTC quote
Some pics of a o-tuning 200 in the German way of dremelling! Just scroll down the page:

https://www.facebook.com/groups/107236579867807
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