nwc09121986
New Member
I was wondering if the change from a v6 to a v8 without changing the tach will affect its reading?
Tachometer Reading Off?
- Thread starter nwc09121986
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PMC
Well-Known Member
Sure will. A lot of tachs have a switch on the back to select the CI number of the engine.
nwc09121986
New Member
How much will this change the tach reading?
PMC
Well-Known Member
If I had to venture a guess - I'd say the tach would read 25% faster. Comparing the number of coils pulses between 8 and 6ci engines. The 8 will have more charge and discharge cycles per single revolution.
I'd be curious to hear from some on real numbers. Is this accurate, or am I spewing BS.:grin::smt043:grin:
I'd be curious to hear from some on real numbers. Is this accurate, or am I spewing BS.:grin::smt043:grin:
nwc09121986
New Member
You were correct! I changed the switch from V6 to V8 on the back of the tach and at 20 miles an hour where the tach previously read 4200 it now read 3000 so right around 25%
