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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: cross express on September 06, 2014, 03:41:24 PM

Title: RPM Gauge MCI 8
Post by: cross express on September 06, 2014, 03:41:24 PM
      Looking to get a rpm gauge for a 78 mc 8 4 manual. Tried Luke at US Coach no luck, what, where are my options.
Title: Re: RPM Gauge MCI 8
Post by: luvrbus on September 06, 2014, 04:49:48 PM
After market from www.precisionspeed.com (http://www.precisionspeed.com) in Phoenix does it have a tach now ?
Title: Re: RPM Gauge MCI 8
Post by: cross express on September 07, 2014, 06:02:24 AM
  No tach now.  Thanks, I will check this site out.
Title: Re: RPM Gauge MCI 8
Post by: Bill Gerrie on September 07, 2014, 09:38:16 AM
Summit Racing has a programmable 3000 rpm tach for $78 that reads from the "R" terminal on the alternator. If you have a DDEC engine it reads from the 505 wire as well. It is VDO #333199
Title: Re: RPM Gauge MCI 8
Post by: luvrbus on September 07, 2014, 09:45:39 AM
He probably has a belt driven alternator the tachs seem kinda of worthless driven from the R terminal on those for some reason
Title: Re: RPM Gauge MCI 8
Post by: chessie4905 on September 07, 2014, 01:43:32 PM
   On our 4104, we used a sender that looked at the flywheel teeth. Other than a loose wiring connection, never had any problems with it.

http://www.speedhut.com/gauge/GR4-TACH-06-HTZ/1/Diesel-Tachometer-Gauge-4K-RPM-Shift-light (http://www.speedhut.com/gauge/GR4-TACH-06-HTZ/1/Diesel-Tachometer-Gauge-4K-RPM-Shift-light)


The tach can work with various senders and the progressive shift light option looks interesting.....
Title: Re: RPM Gauge MCI 8
Post by: TomC on September 07, 2014, 07:58:36 PM
I use an Isspro 3,000rpm with hour meter. I have a synchronous generator off the back of the blower drive (same drive that can drive a mechanical tachometer). It's been the best gauge yet. Good Luck, TomC
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