Sport Rider Project Triumph

[Arthurwg]

I've been following with interest Sport Rider's Project Triumph race kit build-up in the August and September issues. I was surprised to see that the race motor dropped a valve in the No.1 cylinder at the get-go. They then swapped to a standard road engine and did the same thing again-- dropped a valve in No1. As I remember Performance Bike's endurance race test of the 675 earlier this year also resulted in a dropped valve in less than 400 miles. What gives?

[Will]

Beats me. There are four of them racing out here, and none of them has dropped a valve or done anything else like it. They have all been reliable as a stone. Throwing them down the track doesn't do them any good, and all but one has been tossed at least once. Mine is a streetbike, but spent a little time on the track last year (including getting tossed down the track once) and has had no mechanical issues. I don't know why the Brit Squid Press is sucking down valves like they are.

[HiVel]

Very odd the bikes apparently dropping only valves in the No 1 cylinder-the right one from the riders perspective-exhaust and intake valves both seem to be guilty- think it is heat related? Very hot in SoCAl and Alabama -How hard are they running these motors? Cant buy one yet until they figure out the problems involved. Am looking at he new street triple with the D suspension etc. When ARE THEY DUE??