Crank Angle Sensor Count?

[campground man]

We're installing a Haltec stand alone on a ca18det (FWD), and the guy doing it is trying to figure out the Crank Angle Sensor Count.

I'm not doing the installation but I was wondering what this is, and what it is for a Ca18det. Maybe if Dee or one of you guys knew, it would save some time.

[Buddyworm]

EF & EC - 9 from the FSM might be what you're looking for.

[campground man]

EF & EC - 9 from the FSM might be what you're looking for.

I only have my cars FSM, (a 90 sentra 1.6), I don't have access to a FSM for a ca18det.

[Buddyworm]

They're pretty easy to find. Just use google.

[campground man]

The rotor plate has 360 slits for 1 degree signal and 4 slits for 180 degree signals.

So what does that translate to? What would the input be for someone to key in on the Haltec when it asks for the Crank sensor count?

[float_6969]

There is a link to a FSM in the FAQ. That will tell you which wires are which.

As for the output, there are 3 outputs; 360/rotation, 4/rotation, 1/rotation(this is a sync signal, as the wavelength of the output is much longer than that of the other 2 outputs).

The thing to keep in mind is that this is a CAMSHAFT angle sensor, NOT a Crank angle sensor. This is important because the cams spins at half the speed of the crank. I'm sure your guy knows this, just make sure he takes that into consideration.

[zmannz]

I have been working on megasquirt 2 with stock cas on my rb20 lately. I know that megasquirt software can't effectively get a read off the 1 degree signals, so I am converting to a wolf technologies cas wheel. I am sure something similar can be done for the ca18.

[float_6969]

I actually thought about that today and was going to recommend a replacement wheel for the CAS for the megasquirt user's, but you've beaten me to it.

I can't seem to find the company that made the one I was thinking of, but that one from wolf should work.

IF I had enough interest, I know a guy that has a laser cutting machine and could easily make wheels for our CAS's. We could easily make it emulate the output of the ford EDIS system w/o the need for the trigger wheel on the crank.

This would be hard to do though because I don't have mega squirt or a CAS to disassemble, but in principle it should be easy enough.

[the converted]

Autronic and AEM both make sensor wheels for the sr20. I don't know if these are engine specific, but I would guess that they can work in other engine.

[float_6969]

AUTOTRONIC! That's the one I was thinking of.

IIRC, the SR20 wheel (Same as KA) is too big for the RB/CA/VG CAS housing.

I thought they made one for the CA as well, I guess not.

[boost_boy]

The rotor plate has 360 slits for 1 degree signal and 4 slits for 180 degree signals.

So what does that translate to? What would the input be for someone to key in on the Haltec when it asks for the Crank sensor count?

Did you guys ask haltec techs? They would know best as to what to do with what application. Hope their tech advisers are helpful as they were years ago!

Dee

[zmannz]

I actually thought about that today and was going to recommend a replacement wheel for the CAS for the megasquirt user's, but you've beaten me to it.

I can't seem to find the company that made the one I was thinking of, but that one from wolf should work.

IF I had enough interest, I know a guy that has a laser cutting machine and could easily make wheels for our CAS's. We could easily make it emulate the output of the ford EDIS system w/o the need for the trigger wheel on the crank.

This would be hard to do though because I don't have mega squirt or a CAS to disassemble, but in principle it should be easy enough.

You just have to make sure you have a mitsubishi branded cas from what I have heard. I have mine nearly done in my rb20, and I was told that I had to use the mitsu not the hitachi to keep an accurate read on the wheel. I have broken 2 hitachi ones anyway just driving so maybe they aren't as good.

Also, I would have killed at one time for a edis like wheel, but the fact is that I have more timing resolution with mine because I make more signals per rpm than edis but less than the ecu's read limit which is something like 60 counts per crank rev, so that would be 30 per cam rev.

[dattodude]

I run an Autronic SMC on ca18det.

I also disassembled the CAS and installed the new trigger disc myself.

Autronic people don't predrill the lock pin hole, so you are left to do a hell of a lot of guessing where to put the disk once you've got the factory one out. My CAS came apart more than 10 times to get the position and orientation right.

The CA18 CAS disc is much harder to switch, when compared to the SR20 one.

EDIT:Appears you don't need a new trigger wheel.

http://www.hitman.hm/nissantrigger.htm

Ignition Setup Page 4-cylinder 6-cylinderTrigger Input Hall Effect Hall EffectTrigger Edge Rising RisingHome Input Hall Effect Hall EffectHome Edge Rising RisingTrigger Angle *45 *55Trigger Type Nissan NissanHome Window Teeth 16 24Nissan Tooth Offset *18 *5Spark Mode Direct Fire Direct FireCoils on 4-Cylinder 2 ---Engine Type Piston PistonOutput Type Constant Charge Constant ChargeCoil Charge Time (mS) 1.8 3.0Output Edge Falling Falling

Reference: RB engine forum:http://forums.trinituner.com/f...04245
Modified by dattodude at 3:40 AM 9/10/2009

[float_6969]

That's pretty nice info there!

I will give it to haltech, it will work with just about anything. I would say it's main drawback is that it's SO option rich, that it's easy to get lost in what does what. But most of that is in the setup. Once it's setup, the tuning isn't that much different than any other laptop type standalone.