OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
UTC quote
Any places to get forged vintage vespa parts? I'm looking for forged piston, crank, case etc... I don't own a vintage Vespa yet but I'm looking for parts to put in a vintage largeframe or smallframe.
⚠️ Last edited by splash_wave on UTC; edited 2 times
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
UTC quote
I'm not racing I just want better parts
UTC

Addicted
PK50XL, PK100S, ET3, Matchless G80S, Honda CBR400RR, Ducati ST4S
Joined: UTC
Posts: 688
Location: UK
 
Addicted
PK50XL, PK100S, ET3, Matchless G80S, Honda CBR400RR, Ducati ST4S
Joined: UTC
Posts: 688
Location: UK
UTC quote
How old are you talking?

Theres loads of aftermarket stuff for all sorts of models so unless you are after stuff for a really early model then i would have thought a look at any of the online scooter shops would give you loads of options.
@jkj-fz6 avatar
UTC

Ossessionato
BV400, Primavera 150, Yamaha Zuma 125
Joined: UTC
Posts: 4428
Location: Twin Cities, Minnesota
 
Ossessionato
@jkj-fz6 avatar
BV400, Primavera 150, Yamaha Zuma 125
Joined: UTC
Posts: 4428
Location: Twin Cities, Minnesota
UTC quote
Are you talking about forged vs. castings? I would doubt that anyone makes forged parts where a casting will work just as well, as in engine cases, for example. Are original cast parts ever replaced with forged parts for performance reasons?
@subetherbass avatar
UTC

Ossessionato
1997 Italjet Formula 125, 2 matching N.Z. '69 VBC Super, 177cc Racer, VespaCross Bodge, Puch SRA150, Piaggio Zip 100! & others
Joined: UTC
Posts: 4925
Location: Australa, Mate
 
Ossessionato
@subetherbass avatar
1997 Italjet Formula 125, 2 matching N.Z. '69 VBC Super, 177cc Racer, VespaCross Bodge, Puch SRA150, Piaggio Zip 100! & others
Joined: UTC
Posts: 4925
Location: Australa, Mate
UTC quote
How bout trying here...
Forum member supplied image with no explanatory text
⬆️    About 2 years elapsed    ⬇️
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
UTC quote
Just to open this question up again.. I feel like a forged crank, rod and piston would allow me to ride wide open throttle for a longtime without blowing a hole in my piston or break a rod. It looks like no one makes them unless you go custom like through wiseco or je?
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15080
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15080
Location: The state of insanity, SoCal
UTC quote
splash_wave wrote:
Just to open this question up again.. I feel like a forged crank, rod and piston would allow me to ride wide open throttle for a longtime without blowing a hole in my piston or break a rod. It looks like no one makes them unless you go custom like through wiseco or je?
anything will fail if you exceed the manufactured specifications no matter how it is made.

anyway, people have been riding bikes WFO without lunching the motor on stock components for ages. it just comes down to the tune.

but since you asked, a lot of after kits already feature a forged piston and most rods are forged.

selecting good quality components and operating them within their specified parameters with a keen eye toward set up and tuning will go a long way in building a strong, reliable motor that you can thump on.
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
UTC quote
Ok
@orwell84 avatar
UTC

Ossessionato
Joined: UTC
Posts: 3679
Location: northern New York
 
Ossessionato
@orwell84 avatar
Joined: UTC
Posts: 3679
Location: northern New York
UTC quote
I think stock engines were designed to run at full throttle for extended periods. I also have the impression that they were somewhat detuned to be able to run that way.
@christopher_55934 avatar
UTC

Ossessionato
2007 Stella 225
Joined: UTC
Posts: 3547
Location: Rochester, Minnesota
 
Ossessionato
@christopher_55934 avatar
2007 Stella 225
Joined: UTC
Posts: 3547
Location: Rochester, Minnesota
UTC quote
orwell84 wrote:
I think stock engines were designed to run at full throttle for extended periods. I also have the impression that they were somewhat detuned to be able to run that way.
I agree, also may have been to run on about any low octane fuel or low quality oil anywhere on this planet. When you only have mechanical setups and are trying to design for various, fuels, elevations and heat conditions.
@scooterist avatar
UTC

Molto Verboso
71' Sprint Veloce , 05' Vespa PX150, 1978 P200E
Joined: UTC
Posts: 1614
Location: Tucson, AZ
 
Molto Verboso
@scooterist avatar
71' Sprint Veloce , 05' Vespa PX150, 1978 P200E
Joined: UTC
Posts: 1614
Location: Tucson, AZ
UTC quote
If you are looking to beef up your engine start with a complete top tier kit. I can't say is bulletproof because I had a Pinasco kit that seized a half a dozen times on me and one time just cruising at 45 mph it crumbled like blue cheese and like dry crackers. The pinasco suppose to have the all mighty nikasil liner cylinder but it also got grooved.

I have been running Malossi ever since and I haven't had any issues with neither the cast iron nor the aluminum kits.

What type of riding are you looking for to demand forged components? for the most part a Malossi or Polini kit will do the job.
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
UTC quote
Ok. My next engine will probably be a vr-one with malossi 210 kit. I don't think my riding demands forged parts but hey I'd drop $500 for a forged piston for more faith in something indestructible.
@chandlerman avatar
UTC

Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 66 Lammy S3
Joined: UTC
Posts: 10886
Location: Nashville

284 Days Since Last Explosion
 
Lucky
@chandlerman avatar
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 66 Lammy S3
Joined: UTC
Posts: 10886
Location: Nashville

284 Days Since Last Explosion
UTC quote
Pistons generally fail because they're overheated to the point that the aluminum loses cohesion or because the timing is too advanced that the spark eventually drills a hole through the top of it. Forged vs. Cast isn't going to help with that.

Now connecting rods...that's something we can talk about. But, as Greasy said above, so long as you pick parts that are within spec for your build, it'll all be fine.
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15080
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15080
Location: The state of insanity, SoCal
UTC quote
forged parts aren't a crutch for poor tuning.

you can run the best stuff in the world and if it's not set up right it'll still fail. if you push it beyond the design envelope the center simply won't hold.

when building "performance" you have to think of it as a system. choosing components that work together is only one part of that system.
@geeklion avatar
UTC

The Dude
Too Many piles of Junk that need too much work and too much money
Joined: UTC
Posts: 2298
Location: PNW from LBC
 
The Dude
@geeklion avatar
Too Many piles of Junk that need too much work and too much money
Joined: UTC
Posts: 2298
Location: PNW from LBC
UTC quote
splash-wave, have you ridden/built/tuned/worked on a vintage vespa or other 2-stroke?
OP
UTC

Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
 
Hooked
1968 Sprint 150
Joined: UTC
Posts: 246
Location: Vancouver, BC
UTC quote
I know largeframes as I had one 12 years ago. Installed a Pinasco 177 on my current Vespa. I know the port timings are crucial to tuning along with mixture.

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Buy Me A Coffee
 

Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com


All Content Copyright 2005-2025 by Modern Vespa.
All Rights Reserved.


[ Time: 0.0116s ][ Queries: 4 (0.0039s) ][ live ][ 327 ][ ThingOne ]