2cams70 wrote:This improvement didn't of course get carried through to the LTC. I believe the Bean cartridge is designed using this larger bearing. The Burton cartridge is not.
I thought it was the other way around with the Bean cartridge using the regular LTC water pump and the Burton one using the larger bearing.
https://www.burtonpower.com/burton-wate ... fl860.html says that parts cannot be mixed with OEM items.
After some messing about with back plates during my recent water pump replacement, along with shipping delays and some other timing issues, I ended up using a Bean backplate that Russ (CBUEB1771) had in his stock of parts. This is a very nice & strong piece, milled from a solid lump, not cast. It's not going anywhere. It took the standard LTC pump and front cover. Of course, Bean may have changed things since Russ purchased it (I don't know how long he'd had it).
As an aside, I also decided to cut & use backplate-to-front-cover gaskets as described in Brian Buckland's book. Brian suggests 30 thou gasket material but I didn't read that until after I'd cut 15 thou gaskets (the same as the block-to-backplate gaskets). So far, after a few hundred miles, the joint is completely dry.
If the engine doesn't sprout a leak soon I may have to resort to spraying oil on the chassis by hand. How else to prevent rust? Just kidding, I have a galvanized chassis and, anyway, the speedo angle drive is manfully stepping up to the task of spreading oil around the underneath.
Nick