OP
UTC

Member
P200E
Joined: UTC
Posts: 49
Location: Milwaukee
 
Member
P200E
Joined: UTC
Posts: 49
Location: Milwaukee
UTC quote
Here it is mounted...

External inline image provided by member with no explanatory text
@niz76 avatar
UTC

Hooked
1980 Vespa P200E
Joined: UTC
Posts: 199
Location: Tampa, FL
 
Hooked
@niz76 avatar
1980 Vespa P200E
Joined: UTC
Posts: 199
Location: Tampa, FL
UTC quote
Might want to lap the new flywheel to your crank. I wish I would've done this at first when I installed a lighter flywheel on mine- it ended up shearing a few flywheel keys and setting me back a ways in my build until I figured out what was happening and then lapped it on. Been all good since then...
OP
UTC

Member
P200E
Joined: UTC
Posts: 49
Location: Milwaukee
 
Member
P200E
Joined: UTC
Posts: 49
Location: Milwaukee
UTC quote
So you are recommending I very a new fly wheel?
UTC

Enthusiast
Px kitted and blinged
Joined: UTC
Posts: 96
Location: Uk West Yorkshire
 
Enthusiast
Px kitted and blinged
Joined: UTC
Posts: 96
Location: Uk West Yorkshire
UTC quote
No expert on the P200. Could yours be a rally 200 engine check the serial number on a Web site

In the UK I think the 200 rally uses an ignition system called Femsa, I'm wondering if yours in its history has had a conversion to Ducatti hence the non standard flywheel.

Never seen one like that ever
@niz76 avatar
UTC

Hooked
1980 Vespa P200E
Joined: UTC
Posts: 199
Location: Tampa, FL
 
Hooked
@niz76 avatar
1980 Vespa P200E
Joined: UTC
Posts: 199
Location: Tampa, FL
UTC quote
dpollisme wrote:
So you are recommending I very a new fly wheel?
No, no sorry, I thought you installed a new flywheel. Re-reading I see that you did not. Whatever flywheel you end up with, it's a good idea to lap it to the crank- cheap and easy to do! Grinding a little off the cylinder to make the flywheel clear is not a big deal... shouldn't hurt anything as long as it's within reason. I had to do the same with my Polini 208 cylinder.
@mjrally avatar
UTC

Veni, Vidi, Posti
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
Joined: UTC
Posts: 5097
Location: Oceanside, CA
 
Veni, Vidi, Posti
@mjrally avatar
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
Joined: UTC
Posts: 5097
Location: Oceanside, CA
UTC quote
That flywheel is definitely not stock. Maybe electric start flywheel but no teeth on the outside? That won't mess up your engine but we just noticed its different.

The most important thing is to time your engine! Search the forum, scooter help and YouTube for timing tips. Stock p200 should be 23* BTDC.
@goslash27 avatar
UTC

Addicted
Viet-bodge
Joined: UTC
Posts: 756
Location: Cedar Rapids, IA
 
Addicted
@goslash27 avatar
Viet-bodge
Joined: UTC
Posts: 756
Location: Cedar Rapids, IA
UTC quote
Solo Rider wrote:
What's current thinking on the cause?
I'll put my chips on "they didn't set the timing correctly when they replaced the stator".
I'm not yet experienced enough to consider myself a "Vespa guy", but I've been around the block with internal combustion engines. If I'm off base, I'm sure somebody will be around shortly to correct me.

Looks like it was hammering so bad it actually blasted the wristpin retainer right out of the piston. Did you find it hiding in your crankcase?

Best,
-Slashy
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