I would like to get a better idea of what is happening under the hood. Do any of you out there know of a good tach for my 10? I need it to also look good as the ball&chain can be picky. 4,6,8 cly. tachs are everywhere but for V-10s they are hard to find. Are we not special or what? As it is going into an E-350 the dash is different from the F series with more limits on mounting points.

 

So they didn't offer a factory Tach in the E-Series?

Matt

 

Have you tried a search? I seem to remember a few posts on someone putting in an aftermarket tach on an E series, they had the same problem, no specific 10 cylinder tach on the market.

If it is like the tachs of old you can use the same one for different combos of cylinders, just have to change a resistor or something to get it to read the proper rpms for the number of cylinders.

Not sure if that makes sense, as an example you can swap a 22r four banger from a Toy for a 4.3 V6, and retain the factory tach by plugging in "something" in line of the factory tach wire. I have the detailed info on the process in my Toyota swap guide at home somewhere. It isn't Toyota specific so it should apply to other tachs. I can dig it out if no one has any ideas for you.

 

Ok, I'm bored at work today. Here is part of the article on the tach. Not sure if it works for the 10 since it is a coil on plug ignition, but might if the signal is analog at the tach. Good luck!

"The Toyota tachometer accepts a pulsed ignition signal from the coil. This signal is converted into a proportional DC signal that drives an analog current meter in the dash to display engine rpm. Its reading can be scaled to correctly display the correct engine rpm by adding a calibrated resistive shunt to the meter input.
A 5k ohm trim potentiometer is placed across the input contacts to the tachometer meter. This is done directly at the meter posts inside the instrument cluster. For this purpose, it is best to use a small 10 turn potentiometer to provide easier calibration of the tachometer. This potentiometer can be purchased at almost any electronics store. Solder wires to the potentiometer and find a way to add it to the wiring at the back of the meter.

The figure here shows schematically how this is done. Once installed you will be able to recalibrate, or scale, the tachometer reading by adjusting the potentiometer. By running the engine and using another accurate tachometer as a reference, adjust the potentiometer until the engine rpm readings are both the same. Once done, you will have a factory tachometer that reads accurately for your V6 or V8 engine."

 

Ford motorsport or SVT offers a tach adapter for 4.6 and 5.4's dont know if it will work on the V10, but would be worth checking on.

 

Check out some places that sell Dodge Viper parts. I'm sure someone makes an aftermarket tach for one of them, and I can't see why it wouldn't work for a Ford V10.

 

nafzimo,
They may have offered one. However I bought used. The savings is wonderful. Let someone else eat the depreciation. Now with the money I saved I can tinker with my toy.
Bryan.

 

Is there anyplace w/the V10 that you can pick up a full "tach" signal? Meaning, all 10 cylinder pulses on one wire?

The V10 is coil-on-plug. Each coil is fired by the computer. There would not seem to be any place to pick up all 10 cylinders at once.

I think you need a tach for a one-cylinder and wire it in parallel with one coil.

Is there a tach that can read the crank sensor instead?

art k.

 

I agree with you! My thought was, if they offered one from the factory, you may be able to get what you need at the salvage yards.

Matt

 

Ford Racing tach adapter will work with Ford Racing tach or any other aftermarket tach 10 cyl included. just read it in Ford Racing site.Click on performance parts and is the first thing listed.