- Joined
- Nov 22, 2003
- Messages
- 7,159
Does the OS 9 b bolt up to the new billet intake on the 67 Greenie?????
Thanks Mike, thought it had to be tweaked with a rat tail file. Just was not sure between the cast and billet housings............==={}Use a little silicon. Then look through the front case towards the carb once it's dry to make sure none of the silicon has squished out and is impeding flow. If it does, let it dry and cut the excess out with a hobby knife. I have seen several guys have lean issues due to air leaks mating the 9B to the CMB and a little smear of silicone makes it happy.
I also have found that taking a round needle file and slightly opening up the mounting holes on the 9B towards the outside seems to make getting the screws started easier. All my motors have the cast front case so maybe the billet ones you don't have to do all this stuff.
Dave, it was .010 per side. With O-ring seals well, I hate using silicone on anything. Thanks for needle settings.Ray,
To answer your original question... the masses will tell you it fits... use a caliper, and you will see, it needs some minor 'fit' adjustments to fit/seal correctly.... ie. Minor slotting (from memory about .015" per side), and/or you can use silicone as other have suggested to 'compensate for that minor miss-fit, depending on your finesse, and torqueing ability... The proper way is to use a caliper to verify bolt spacing on the CMB housing and compare that to the C/L bolt spacing on the OS 9B. The 'inset' bore (Boss on the 9B) is a close fit, and aligns well.
As far as the fuel needles are concerned, I think the 'text book # for the .67 GH are about 2 1/2 turns out on the low-speed when the barrel is completely closed, and about 1 5/8 turn on the high-speed if memory serves me correct, to run like a rocket with a short pipe.. Some may run leaner on the H/S.
Bottom line, make sure the carb mates up properly (eliminate the potential leaks) and the carb will work well.
DJ
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