New/ Used Tach In Fargo

[55 Fargo]

Hey, acquired a used Sunpro tach, for gratis, its a 10000 rpm, a little bigger than what I would pay for, but it was free.

Here it is, installed, still need to tidy up the wiring yet, I did put an inline fuse to it though.

Engine sounds busy after 2500 rpm, seems to sound best at 2200-2400 rm, nice cruisin RPMs for this old engine..

[JBNeal]

is that tach set to 8 cylinder or 6 cylinder?  I bought a tach for my '89 Dakota from JC Whitney years ago, and recall that the operating instructions listed the need to flip a switch for this by removing the shell.  But then again, 2500 rpm sounds about right, these flatheads turn like a diesel so rpms ought to keep their distance from 3000 or a poppin' noise will sound and the driver shall become pedestrian soon afterwards.

[55 Fargo]

is that tach set to 8 cylinder or 6 cylinder?  I bought a tach for my '89 Dakota from JC Whitney years ago, and recall that the operating instructions listed the need to flip a switch for this by removing the shell.  But then again, 2500 rpm sounds about right, these flatheads turn like a diesel so rpms ought to keep their distance from 3000 or a poppin' noise will sound and the driver shall become pedestrian soon afterwards.

Yup, did that 1st before install, tiny switched in back of tach, a sequence for 2-10cyl engines, but 12 volt neg grnd only, as my truck is.revved engine up over 3000 rpm a couple of times....

Edited March 28, 2013 by C38Spitfire6