40 DRLA Dellorto Updatekit..any advance with stock heads??

[Tom G.]

Hi,
i drive a 1951ccm Typ 1 engine with stock valve heads...Now i drive a set up with 40 DRLA and 34 vents...at the moment good tourque and HP about 1800-5500 rpm...engine produces nearly 6500 rpm...
Does it have any fact to change to dellorto update-kit in MPG consumption or any performance rising??
Did someoene know about the vent size of the update kit??
Thanks a lot
let me know
Tom

[Rasser]

I think the wents are 36....  not sure!

anyway - i had my little 1914 engine turn 7000 rpm, and producing 147 hp at 6900rpm (40mm dells with 36mm vent.).

With that in mind I wouldn´t buy the update kit - Use the money on a good 3 angle valve job instead. Better value for money IMHO.