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mobil1
09-07-2014, 01:05 AM
Finally had some time, next summer we will be back on the water...

http://i166.photobucket.com/albums/u82/OS-tunnel/Mobile%20Uploads/image_zpsdecae981.jpg (http://s166.photobucket.com/user/OS-tunnel/media/Mobile%20Uploads/image_zpsdecae981.jpg.html)
88workcar
09-07-2014, 04:04 AM
Very nice! 70 with 90 carbs, light flywheel. and I am sure more than the obvious. Should scream. I am building one just like it on a 12" mid right now.
Fast Fred
09-07-2014, 06:36 AM
loose the choke plates and shafts,
Tiller guy
09-07-2014, 06:14 PM
What kind of lines are those? I need to replace oil and fuel lines on my yamaha.
mobil1
09-07-2014, 10:30 PM
Thanks, i hope it will.
Has some mild porting, shaved heads...
Thought about it, but i will loose ease of starting and i think i wont gain much...
It are tygon hoses, used with the merc engines...
Roflhat
09-08-2014, 02:03 AM
Looking good
Roflhat
09-08-2014, 02:04 AM
Very nice! 70 with 90 carbs, light flywheel. and I am sure more than the obvious. Should scream. I am building one just like it on a 12" mid right now.

Any photos of your 12" mid? Would love to see something like that on a modifed SLT transom
Fastjeff57
09-08-2014, 02:28 AM
Just worked on one of these, but it didn't have those yellow hoses. What do they do?

Jeff
omcstratos
09-08-2014, 12:21 PM
Those are just the bleed lines that take mixed gas that builds up in the c/case back to the intake.
proprider01us
09-08-2014, 06:09 PM
Here's a 40hp model that I put on a 9" mid.
58350
mobil1
09-09-2014, 09:38 AM
Sweet, what midsection & gearcase is that?
Whats up wit the cilinder head and water routing?
proprider01us
09-09-2014, 02:03 PM
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
09-09-2014, 02:27 PM
Here are some pics from it running this past weekend.
blink182601
11-12-2014, 01:24 PM
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
11-12-2014, 05:32 PM
Contact Sid Bass @
(390) 373-3839
Rusrog
11-13-2014, 12:34 PM
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...