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Title: 40 DRLA Dellorto Updatekit..any advance with stock heads?? Post by: Tom G. on January 13, 2007, 12:31:08 pm 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 Title: Re: 40 DRLA Dellorto Updatekit..any advance with stock heads?? Post by: Rasser on January 13, 2007, 18:29:36 pm 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. |