Speedy wrote:
And the 'stock' motor in Precious Metal was not stock at all. A lot of that was "the sky is falling" on the part of the team--on purpose. They took the banks and oil pan off the new race motor (yellow) and grafted it onto the lower-end of last year's race motor (red). Last year's motor was one of the ex-Miss Budewiser motors and there was nothing 'stock' about it. They did a good job Frankensteining the parts together in a short period of time. They called it a 'ferry motor', but come-on...the sum total was still stronger than what they worked with last year.
To make things clear, as I am a Member of Team PM and have spent the last year of my life helping with this year's build:
There were no "Sky is falling" deceptions on purpose. It was falling at many turns along the way. I can't count the times in the last 2 months when Thom walked in and said, "That's it, we're done without such and such.", only to have a hard won solution work out just in the nick of time. You have to remember this is a low buck, not unlimited pocketbook team.
You are correct on the combination of parts. The red portion is last year's engine- which goes back to the Bud series boats, which means it is a very tired bottom end. There isn't much special Secret Squirrel stuff down there...it's a bottom end. The new engine did a 10 minute test run, after which it was found to have destroyed a crank bearing. Chasing down the reason hasn't happened yet, as the issue was getting anything running into the airframe and getting to Reno in time. In trying diagnose the issue, the top end had been disassembled and basic engine dynamics such as ring end gap, valve lashes and other clearances were checked. When no issue was found with that portion of the engine, Thom made a command decision to use the bottom end of the very old engine with the refreshed top end parts. The top end sports such things as new rings, and valve train components. He called it a ferry motor in his first post, as I believe he saw it as having about the same performance as a ferry or stock motor, not a full bore racing engine.
Certainly there was more engine than last year, as it had a fresh top end with new rings, seals and other components usually replaced in a top end rebuild. That said, I believe everyone on the team viewed it as having basic stock performance- between the nice new parts, and the worn old parts. It was not a wolf in sheep's clothing engine to fool everybody into thinking otherwise. From the time the new build engine destroyed itself, to the time the composite engine ran was almost exactly 48 hours. All done under the gun of having enough time left to even get the aircraft to registration at all.
We went through hell getting the airframe mods (strakes, wingtips, canopy, filling rivets and painting, etc) done over this last year- and hopefully have the time to concentrate on more of
just an engine program. We still have a lot of work ahead of us to be ready for next year, but the team itself grew together and took a huge step forward with our actual finish in the Gold Unlimited Race....