Modern Vespa

i have a 2001 px200e and it rides nice but the acceleration (pull away) it slow.
what advice show i take to make it better ?
iv up jetted it and modded the air filter with extra holes with sip sports exhaust but dont no what els to do ?
thanks for the advice

I would suggest a Pinasco 225cc Cylinder kit and upjetting it again.


Beedspeed is your best option

https://beedspeed.com/collections/vespa-cylinder-kits-pistons-spares/products/copy-of-vespa-px200-p200e-rally200-cosa-pinasco-225cc-super-sport-cylinder-kit-alloy

Pinasco is crap, stuck to their 80s design and their current pistons turn to cheese. Malossi Sport MKII all the way and I would also avoid BeedSpeed…

There are a lot better shops in the UK that will deliver what you ordered…

On Small Wheels, VE UK, etc…

What is the end goal?

You could change the gearing to give a bit more acceleration but obviously that affects top speed.

Think about what you are going to use the scooter for, and budget, and go from there.

I have read in a number of places that the p200 varied in performance depending on which market it was being produced for or that there is a fairly wide variation performance in performance in these bikes presumably because of variation in piston squish resulting in higher or lower compression ratios.

It would seem that this difference is intentional rather than a range in tolerance as it's something engine manufacturers always report in their specs.

Maybe I am incorrect in this information as I am recalling it from memory. I feel like I have read a lot of posts with readers either describing the stock 20O as fast or a slug.

Here's a couple with a slow one, looks to be about the same age as well so probably similar spec. And lots of good advice.


https://modernvespa.com/forum/post2503613?highlight=#2503613

https://modernvespa.com/forum/post2495403?highlight=#2495403

Hey Bob,

Do you have a 24/24 carb? If not, that will help - a bit....

In the US, the P200 was rated for 12hp in 1978 and 1979. I believe they had a 24/24 SI carb. In 1980 and 1981, they were only rated for 10hp. De-tuning was to help with emissions. They came with a 20/20 SI carb and a re-profiled cylinder head.

Do a compression test and check of air leaks too on the seals, Clean your carburator, check the spark plug , check the pressure of the tires. Have you noticed the decrease in performance recently? maybe your cylinder is scarred and groovy but still have sufficient compression to keep moving.

Is your scooter hard to start? too many kicks? you can always just do a cylinder replacement with new piston ands rings. Maybe you just bad a stuck piston ring from blow by gasses.

If you are set on wanting to do a cylinder kit I recommend the Malossi sport 210. Steer away from Pinasco.

Its a p2 and as standard it will never race away with rapid acceleration. Its a reliable tractor and is what it is. If you want to sacrifice top end the polini box will make it shift better around town and a noticeable acceleration boost up to 50/55 mph but loses about 5 mph top end. If you are thrashing about in pompey great but for the A27 road which is your link road everywhere the road 2,0 sip is best for the dual carriage ways. The polini box also good if you heading to isle of Wight as its hilly. If you got 100 quid spare get a polini box and try it. Jetting will likely be the same . Very easy to fit too. Stick the road 2 back on if you going on a rally or longer run. 30/45 minute job once you got the knack.

First off, to the OP...I'll reiterate (and expand) the questions that others have asked:
1) What's your goal here?
2) What's your budget?
3) What's you mechanical skillset?
4) How are you measuring your baseline today?
5) What tradeoffs are you wiling to make in this process?

If you have the skills and willingness to do the work, you can get a LOT more performance out of a P200 just by matching, flowing, and opening up ports, expanding the engine intake, adjusting port timing, reducing squish, and adjusting ignition timing. That's what's referred to as "O-Tuning."

If you want to start swapping out parts, at some point, the sky is the limit and you can easily build something that will scare you off the throttle before it gets really wound out.

My guess is that you're looking for something in between--has a little more punch, but still retains a relatively stable, reliable build. Even if you want a kill-yourself-fast bike, you're not going to pull it off on your first try unless you've done a lot of custom building in the past.

So that gets us back to the relatively conservative upgrades, which probably consist of a new exhaust (SIP RoadXL or BGM BigBox would both be good options), a 60mm race crank, a Malossi 210 cylinder for go-fast parts, and a bunch of carb jets (idle, Air Corrector, Atomizers, and Main Jets--buy them as sets so they'll be consistent relative to one another).

You'll have to split the cases and really should plan on dropping the motor to do this work right. Whether you go the "buy go-fast parts" or "o-tuning" route, what you're basically going to do is:
- open up the intake into the cases, both widen and lengthen it (increase intake timings--need to have targets and a plan, don't just take a Dremel to them)
- Match and flow the carb->airbox->intake
- Relocate and possibly expand the transfer ports from the crank case to the cylinder
- Open up the windows in the piston
- Up your port timings
- Mill or Lap down the cylinder head to reduce squish
- Replace consumables, e.g. the Cruciform and crankshaft seals while you're inside the motor (you should generally always do this, especially that clutch side seal since it requires pulling the crank anyway)
- Button it back up

Then, to get ready for the road:
- Pressure test it to make sure you have no air leaks. If you do, you have to fix those.
- Confirm ignition timing
- Sort out your jetting (it will all need to get richer)
- Enjoy

If that doesn't sound like your idea of a good time, then you should either learn to enjoy what you've got or track down a local mechanic who can do it for you. If it *does* sound like fun, however, you've come to the right place to learn how to do all of that.

thanks every one for replys
i no it ant a race bike, it rides really well and top end speed is about 72mph ish but i havnt got it for going fast.
i just want bit more pock from start / pull away.
it start about 3 turns on the button and about 3 kicks from cold.
dont no what to do to increase the pull away.

Theres a ton of advice above, its all down to your skills and if you want to do the work yourself, your budget, and what sort of speed/acceleration/reliability you are after.

the Malossi 210 looks to be a good choice from what's been said above.

You look to be in portsmouth so if you really aren't sure what you need to be doing then is it worth having a chat with someone like Allstyles scooters for them to give you some options and prices.

Of course, you could go the cheap and cheerful route of a 3.00x10 rear tyre and a Polini sticker but there are much better options.

When you say slow pull away/acceleration, what are you comparing it to? How slow are you accelerating and what are your expectations? The top end sounds good.

I'm assuming that 72 MPH is indicated (on the speedo) rather than on a GPS? If you're already getting 72 MPH on GPS, then you're already exceeding the expected top speed of a stock P200.

Vespa speedo's are notoriously inaccurate--that's why the "regulars" all talk about "indicated" or "GPS." If it's not GPS, then that number isn't worth the keystrokes it took you to type it.

If you're willing to trade a couple MPH of top speed for a little bit of extra acceleration, you could swap from a 23 to a 22 tooth clutch. That's the least invasive option and, if you can rebuild the clutch, probably the cheapest, too, since it's going to be a matter of replacing the center cog.

Everything is tradeoffs with these bikes. It's the classic Engineering Triangle: Reliable, Fast, Cheap; Pick two.

i was thinking of a kit but didn't no what reliable 210 or bigger ?
i dont wanna kill her or wanna race it just want a happy medium know what i mean ?

The answer is as said near the beginning of this thread by Safis. A no fuss bolt on Malossi 210 Sport kit. Any exhaust you like except the original. The rest is adjusting the engine. Which we can all help you with.

However, clutch, brakes, tyres, rims, shocks etc must all be up to the job of 20bhp or you might die unexpectedly while out enjoying yourself.

I've never kitted my PX200E but when I was frequenting Scooterboyworld.com the lads on there agreed that when kitting a Vespa PX

PX125 = Polini 166cc
T5 = Malossi 172cc
PX200 = Pinasco 225cc

That's just a guide of course and no scientific study

Go to all styles scooters and ask for tony to give advice or do it, he's in the same road a few units down. Drop it off for work and he will probably give you a lift back

I know it sounds counterintuitive, but lowing the tooth count on the clutch will actually slow the acceleration between 1st, 2nd, and 3rd. Reason being is that an engine will only be able to rev (as in RPMs) out so far until it can't rev any higher in each gear. keeping the stock 23 tooth clutch and swapping in a short 4th would be a way better option...but only if the said scooter was lacking acceleration in 4th. For quicker acceleration overall, a taller 1st, taller 2nd, standard 3rd, and a short 4th would let the acceleration of the scooter match the max RPMs of the engine. I don't know how well i just explained all of that. So here's another bit of info...just about any competitive race scooter (either for track or for sprinting) out there nowadays will now have a tall 1st and 2nd gear!

I would rather follow a pack of lemmings off a cliff, than to follow a pack of scooterboys off a different kind of cliff by buying another Pinasco kit for myself.