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ContinuousWave: Whaler Performance
Getting '94 Yamaha c85 for Montauk, ? re: tach, bracket, prop
|Author||Topic: Getting '94 Yamaha c85 for Montauk, ? re: tach, bracket, prop|
posted 06-06-2002 11:08 PM ET (US)
Found a used '94 Yamaha c85 and an am going to put it on my Montauk. First, I was wondering, do I need to get a tach? I know it is nice, but does it really make that much difference for an older basic motor like this. Is there an inexpensive alternative to a Yamaha tach that could be used mainly just to check rpms at wot?
Second, I was thinking about a bracket, not really to improve performance that much, but more to be able to raise the motor for shallow slow running and to avoid adding holes in the transom now and if I got another motor in the future. I was thinking about a CMC model.
Third, my current motor is an '87 70 hp Johnson with a stainless steel prop. The new motor has a stainless steel prop also. Would the Johnson prop fit the Yamaha? Could it be made to fit reasonably and be used as a spare?
These where the questions that came to mind, if you have other comments let me know.
posted 06-07-2002 12:47 AM ET (US)
You can use an aftermarket, generic Tachometer with the Yamaha engine. I would recommend you have a tach so you can judge the engine speed at wide-open. Over-revving the engine could be dangerous.
|John from Madison CT||
posted 06-07-2002 06:45 AM ET (US)
Those really neat Yamaha digital tachs can be found on Ebay for less than half of new dealer prices. Not only do they show RPM's but also, Overheat and Oil reservoir levels. (if applicable).
Keep an eye out on ebay.
posted 06-07-2002 07:50 AM ET (US)
I have a tach from my old 90 - 90hp Yamaha. If this would work, it should ? - I can send it to you. Let me know if you want it.
posted 06-07-2002 11:26 AM ET (US)
The older tach will work on that 85. A 13x17 SS prop will be perfect as well. You can have the OMC prop rehubbed($50) to fit a Yamaha.
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