OP
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Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
UTC quote
I own a 1968 Sprint with original engine. It has the 2 port openings. What would be my options for a case upgrade?
@orwell84 avatar
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Ossessionato
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Location: northern New York
 
Ossessionato
@orwell84 avatar
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UTC quote
Are you referring to upgrading it to 3 larger ports to do a performance build?

Depending on what you are trying to build, there are many options.
OP
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Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
UTC quote
I know about the 3 port expansion with welding on some meat a then machining that 12 o'clock port, I would rather not go through that.

I already mentioned in another post taking an engine with more ports vs displacement and I would rather the displacement but would consider anything as an upgrade.

I was also going to start another thread about what the P200 cases mouths look like.
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Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
UTC quote
orwell84 wrote:
Are you referring to upgrading it to 3 larger ports to do a performance build?
Yes performance build.
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Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
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Location: London UK
 
Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
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Location: London UK
UTC quote
If you put one of these on with a 60mm 110 rod reed crank and all base packer it fixes everything, all at once.
https://www.sip-scootershop.com/en/product/racing-cylinder-quattrini-m1xl-11-172-cc_15046100
All that's left to do is brace yourself.
UTC

Molto Verboso
One or two fun scoots....nothing too precious
Joined: UTC
Posts: 1975
Location: UK (South East)
 
Molto Verboso
One or two fun scoots....nothing too precious
Joined: UTC
Posts: 1975
Location: UK (South East)
UTC quote
Are you open to replacement cases? A worthwhile upgrade would be a set of used P series cases. Not only does this give you the third port, it also gives you better crankshaft options and the later oil seal type. At that point, if cost is not a big consideration, you could look at new Malossi cases. It depends what your performance requirements are. Either way, you would need a number of other components to complete your build, starting with an EFL style gearbox and better clutch.
@orwell84 avatar
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Ossessionato
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Location: northern New York
 
Ossessionato
@orwell84 avatar
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UTC quote
swa45 wrote:
Are you open to replacement cases? A worthwhile upgrade would be a set of used P series cases. Not only does this give you the third port, it also gives you better crankshaft options and the later oil seal type. At that point, if cost is not a big consideration, you could look at new Malossi cases. It depends what your performance requirements are. Either way, you would need a number of other components to complete your build, starting with an EFL style gearbox and better clutch.
I was going to say…The easiest way to get power out of a 2 port case is the 2 port Picasso 177 kit. Going any further, things more complicated. A P case will definitely give you more options and be easier to work with. I bought a VBB a few years back and went through the same questions. I will probably end up using an LML reed case for that bike. I might rebuild the original stock engine at some point.

For me, the 177 + big box exhaust goes faster than I have the nerve to ride. If this is your first performance build, you might want to keep it simple and cheap. Simple, because setting up a performance build can be time consuming and frustrating. Cheap, because you might find that you eventually want something different at some point.
@bajarob avatar
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Addicted
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
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Addicted
@bajarob avatar
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
Joined: UTC
Posts: 560
Location: Ventura, CA
UTC quote
I was also going to start another thread about what the P200 cases mouths look like.
[/quote]

Here you go, stock Piaggio 200 case.

Malossi V1 case for comparison.
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
UTC quote
Say I get a p200 case what parts transfer over to it from the sprint engine?
@chandlerman avatar
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Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate
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Location: Nashville

133 Days Since Last Explosion
 
Lucky
@chandlerman avatar
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate
Joined: UTC
Posts: 9475
Location: Nashville

133 Days Since Last Explosion
UTC quote
Jack221 wrote:
If you put one of these on with a 60mm 110 rod reed crank and all base packer it fixes everything, all at once.
https://www.sip-scootershop.com/en/product/racing-cylinder-quattrini-m1xl-11-172-cc_15046100
All that's left to do is brace yourself.
Seems like it doesn't *need* a 110 rod. If so, I might do this with my VBB motor that's sitting with nothing wrong but an over-Dremeled exhaust port on the Pinasco 177...
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
UTC quote
I know the 60mm is the length of the rod, what's the 110?
@bajarob avatar
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Addicted
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
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@bajarob avatar
1961 VS5T, 1981 P200E, Rigid Frame Chopper, 2001 Harley FXDXT
Joined: UTC
Posts: 560
Location: Ventura, CA
UTC quote
110 is the length, 60 is the stroke.
OP
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Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
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Posts: 236
Location: Vancouver, BC
UTC quote
Thoughts on an LML 3 port case with the following cylinder: https://www.sip-scootershop.com/en/product/racing-cylinder-pinasco-vespone-stx-190-cc_84151100?usrc=Cylinder

190cc looks like the biggest displacement that fits the 150cc motor.
@chandlerman avatar
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Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate
Joined: UTC
Posts: 9475
Location: Nashville

133 Days Since Last Explosion
 
Lucky
@chandlerman avatar
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate
Joined: UTC
Posts: 9475
Location: Nashville

133 Days Since Last Explosion
UTC quote
Given the questions you're asking, you should go with the Pinasco 177. It'll be a nice upgrade without putting you too far into blow up territory.
UTC

Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
Joined: UTC
Posts: 4472
Location: London UK
 
Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
Joined: UTC
Posts: 4472
Location: London UK
UTC quote
chandlerman wrote:
Seems like it doesn't *need* a 110 rod. If so, I might do this with my VBB motor that's sitting with nothing wrong but an over-Dremeled exhaust port on the Pinasco 177...
It does need a 110 on a 2 port. Gives a 6.5mm base packer to transition the 3rd port to the cylinder. Also gets the carb further away from the frame.
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 236
Location: Vancouver, BC
UTC quote
Already have the 2 port Pinasco on my bike. What do you think I would need to know to put that Pinasco 190 on mine. I am willing to ride carefully.
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