guages

[Kracker Jack]

Im not trying to hijack this thread im also looking for advice on gauges. Lets say i was looking for a tach for my 78 evinrude 135hp. what should I look for?

[Destroyer]

Originally Posted by Kracker Jack

Im not trying to hijack this thread im also looking for advice on gauges. Lets say i was looking for a tach for my 78 evinrude 135hp. what should I look for?

Generally speaking, the instructions that come with a new tach will tell you what engine you can use it with (number of cylinders) and on the back of the tach will be a small dial that you will use to set it to the number of poles on your engine. (What you are actually setting the tach to is the number of poles on your alternator) Normally they will function with either 4, 8, 12, 14 or 16 poles on your rotor, depending on what your engine has. (The pulses can also be obtained from the ring gear of your engine by means of an electromagnetic sensor). By setting the dial on the back of the tach what you are actually doing is telling the tach how many pulses to count for one complete revolution of the engine. So, to answer your question, what you need to look for is how many poles are on the alternator of your 135. You should be able to find out that information from Evinrude's website or pretty much from any site that sells replacement alternators for your engine. Hope this helps.

[bradford]

Originally Posted by Kracker Jack

Im not trying to hijack this thread im also looking for advice on gauges. Lets say i was looking for a tach for my 78 evinrude 135hp. what should I look for?

Ferm or Skools would probably know.