That Flathead is using a Merc Mk25 crankshaft with Mk25 steel reedblock
That is an interesting crankshaft, a Mark 25 with a steel reedblock where the rollers run direct between the inner surface of the reedblock and right on the center of the crankshaft. I always wondered why they didn't go that steel reedblock route itself instead of bronze and then aluminum? I have a 4 banger Merc crankshaft that uses the same system so its supported in 2 extra spots not found on regular Merc 4s. How much extra bearing drag comes with the extra support is a good question. The Alky Deflector Quincy Merc padded block engine was run considerably. Other old racers claimed it sealed and isolated crankcase sides better than standard labrinth groved reedblocks or the smooth face oil hole pressurized versions. I wonder how many Quincy Flatheads ever used this sort of bearing system?
What's New at QuincyLooperRacing.US
Hi Everyone,
We've been busy over at the Quincy site, adding a lot more photos for you to view.
Under Collections, we've added: Artie Neadeck & Dick Acker collections. There's additions to the Mark Suter, Bob Dunlap, Roger Hinsdale, Frank Novotny, Dick Ollhoff and the VanWeele brother collections.
Under Racing Legends, we've added Giuseppe Rossi with never before seen photos of the factory in Italy and Rossi water testing an experimental engine, courtesy of Mike Schmidt. Also under Racing Legends, we've added John Schuberts racing biography to his page plus more photos to the McKeans page.
The VanWeele's sent us a CD with lots of pictures from the Muscatine, Iowa, That Was Then This is Now boat show which we will be adding this week. We are also planning to scan and post more of the old Roostertales from the 1950's and 1960's so check back often.
Enjoy! www.QuincyLooperRacing.US
Paul A Christner
PS: Congratulations to Frank Novotny for taking a 1st and a 3rd place for your restored Loopers at this past weekend's antique outboard meet at St. Michael's. Good work Frank! You're setting a high standard for others to follow.