Yamaha build up

[mobil1]

Sweet, what midsection & gearcase is that?
Whats up wit the cilinder head and water routing?

[proprider01us]

The mid section and gear case are made by Bass Machining in Seattle Wa. It's a direct drive 15/14 gear ratio. The engine turns up close to 9000rpm and currently runs in the mid 80's.

Sweet, what midsection & gearcase is that?
Whats up wit the cilinder head and water routing?

[proprider01us]

Here are some pics from it running this past weekend.

[blink182601]

Here are some pics from it running this past weekend.

Do you have any contact info for Bass Machining? Was the midsection custom built or is that something they do production on?

[proprider01us]

Contact Sid Bass @
(390) 373-3839

[Rusrog]

One thing to try, and I do it all the time on the V-6 YAMAHA's, is to wire in a Merc Primer solenoid. Works great and starts even better than the choke plates. I use the blue wires that activates the YAMAHA choke to engage the primer then plumb it into the oil injection ports on the intake. Works like a champ.

Thanks, i hope it will.
Thought about it, but i will loose ease of starting and i think i wont gain much...