Re: 9.9 Johnson Carb Question

[PugetSoundBoater]

quote rudderless:

My 76 head has the number 15 stamped on the top coil mount. If one cc’s the 2 different heads the older one will have less volume.

I just got my 89 head in the mail. It looks as though the thermostat pops off at high speed or lifts off the seat. I will be installing the head as soon as the new thermo arrives.

I might putty the head to check for clearance but I probably will not increase compression.

I will report on how the 89 head works..

That "15" means it is off a 15 hp. My 9.9 has a "10" . My friends 1976 15 hp also has a "15" on the top coil mount.so i surmise that the number signifies the Hp ,if the powerhead gets separated from the rest of the motor?
I have a ’89 9.9 and the t stat is sure different than the early ones.

"Some people want to know how a watch works, others just want to know what time it is"
Robbie Robertson