In a message dated 04/23/2005 11:05 Central Daylight Time, finn.lassen@verizon.net writes:

<< So, maybe we're looking at something like 500 hours TBO at 200 HP continuous, 1000 hours TBO at 150 HP continuous and 2000 at 75 HP continuous. By "continuous" I mean the HP range the engine runs at the vast majority of the time.

But I guess we're waiting for data regarding groove "wear" from the car racers. Lynn? Leon?

Finn >>


I don't know if the grooves are hardened.

I have never warn out a groove, so I don't know how long they last. But the carbon seals are very much lighter than the iron seals, and I use too much oil in the fuel
( 8 Ozs in 5 gallons of Redline racing 2 cycle) So I have no data on max life in racing. Lynn E. Hanover