DR EVO 43MM

[t0kiTopic starterBerichten: 3]

Hello, Im from finland so i really dont understand your language so good.
And i was thinking that i wanted to get more speed out of my piaggio, i was thinking about 80-90Km/h..
So i was thinking, that id buy a bigger cylinder. And if i understod right, the DR evo 43mm cylinder is good and cheap ? + dont wanna tune my “carter” very much. So if i buy the cilinder what do i have to do then ? if i understod right u have to tune your crankshaft or something ? Isnt it working if you buy some tuning crankshaft? And can someone tell me where i can buy the DR EVO 43mm cylinder.

thank you, + sorry for my bad english,

:lol

[EdjuhBijdragerBerichten: 6956]

Hi and welcome,

You don’t want to tune your carter ‘very much’? Either you do or you don’t tune, if you want to reach 80km/h(which you won’t without tuning) you will have to enlarge the inlet and draw the extra transfer ports into your carter.

Have a look at the how-to section, it’s all there.

You’ll also need a 13mm carburettor and a decent exhaust(polini top one/simonini racing).

jmpb.nl has the kit, but i don’t know if they send to finland.

greets

[TimoO_DonateurBerichten: 3971]

if you don’t want to tune your carters you can’t get an engine what is capable to do 80 km/h. you got to tune your carters to reach that speed.

the DR Evo is a good cilinder, but i don’t think you will reach a speed of 80 – 90 km/h with it. i think you need an Malossi 46,5mm or something.

http://www.jmpb.nl/shop/view_product.php?product=VE3253

maybe a bit expensive, but it’s fast.

if you tune your carters to this cilinder and buy a fast exhaust like a simonini or something, you can reach 85 km/h or something. maybe buy a Polini Evolution engine or Malossi Reedvalve engine? it’s much better because it’s got a reed valve.

[sjaak trekhaak]

http://www.jmpb.nl/shop/view_product.php?product=VE3075

[t0kiTopic starterBerichten: 3]

Thanx 🙂
Yea, i could maybe tune my carter if id know how to, but its all in .nl so its kinda hard. 🙂
i knw that i have to enlage my inlet, and buy a bigger carb. and a exhaust.
but how do you ‘draw the extra transfer points ito your carter’ ?
thx for your reply 🙂

[hansiebModeratorBerichten: 10922]

The DR topspeed is about 85 km/h with pully.

I drive about 80 -85 km/h i think 😛 but the hole engine is tuned 🙂

The stuff which is changed is:
– Crankshaft tuned for the 43mm DR
– Crankcase tuned for 43mm DR and 13mm inlet
– 13mm carburator
– Small pully (65)

[t0kiTopic starterBerichten: 3]

TimoO_
u were talking about the Polini Evolution engine and the Malossi Reedvalve engine, isnt they very expensive?

hansieb How did u tune your crankshaft ? and why do you tune your cranshaft? is there any measurement or something ?
and what kind of tools did you use?

Thank you all for your fast and good replys! 🙂

[Gebruiker]

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