alright so before I buy my laser tach i need to know two things


well okay I lied thats three things, trying to use this to adjust my pilot screws, anyone have experience in this arena?

 

Assuming this is some sort of aftermarket gauge cluster you're installing? doesn't the manufacturer's installation instructions define these for you, or at least offer some sort of support?

You'll probably be better off posting this in the Streetfighter forum or something, most of the F2 peeps are still using the stock gauges. Even at that most of the streetfighter gauge setups I've read about - like the TrailTech Vapor and what not, all use one of the coil wires for the tach reading. but I'm no expert on those types of setups.

 

My bad - I reread and realized you're trying to use a handheld laser tach for calibration purposes. You didn't mention a make or model, so I'm flying blind on being able to help you there.

Buuuuut, if there is something that you're trying to put on your crankshaft (flywheel or stator?) I can't figure out how you're going to be able to shoot a laser beam through your engine covers, which need to be installed to have the motor running, unless there is some sort of remote sensor or something? In that case wouldn't that have to be installed inside your engine covers as well?

Pretty sure that's not going to work very well. Laser is emitted light, it can't pass through a metal housing. (At least not at these power levels.)

 

Dude, just pick this up, it has a built in tach:


It measures the RPMs buy the current it sends to the coils.
Here's the schematic. As you can see, the tach lead is the Yellow wire with the green stripe leading out of the ICM (directly under the seat on the right side).


This is what it looks like in real life.

Click this for a super large version of the picture: http://farm4.static.flickr.com/3360/...08ec0e86_o.jpg
Use the included alligator clip to mount the black lead to the ICM's mounting plate and insert the red probe into the Yellow/green connector. This shouldn't require ANY force.

Plug the Black and Red leads to the 2 slots on the right bottom of multimeter and turn the dial straight up to the RPM 4 cyl. setting.


This way you end up with an excellent multimeter AND tach instead of single use item. That way you can test for voltage drops, coils, ignition wires, etc.
Here's the manual: http://www.actron.com/publish/2004/0...lish_16155.pdf

 

I can see your enthusiastic about this meter but I actually picked up the Innova 3340 Pro multimeter it was slightly more expensive but had a few more features plus an inductive clamp where you just stick it over the spark plug wire instead. Btw your not supposed to backprobe connectors use sewing t-pins. Got like 50 at hobby lobby for $3.

 

That works! I was only referencing this because it's the alternative to the laser tach.

You can also use the clips to hook to the coil.

 

yeah its pretty neat, looks better too. hook the coil?