DansVette

So I'm in the middle of replacing my crank pulley (and by the way I sincerely regret ever starting this job, what a friggin nightmare !!!!!)
Anyway, I'm replacing it with an underdrive pulley which comes with a slot for a woodruff key that I was expecting to find after removing the old pulley.
Anyway, the stock pulley has nothing, the surface is smooth, what gives here, I've never ran across this on a crank before.
The new pulley has timing marks of course, so without the woodruff key how on earth are the marks lined up ?

clif

Thats correct. You will want to PIN your new balancer. The woddruff key is only good if you have an aftermarket crankshaft. Mine has TWO pins...



You will see one other place where it used to be pinned with on OEM balancer.

DansVette

WHAT ? Please tell me your kidding me ?!!!!!!!!!!!!

You mean instead of simply having a key, you have to pin it yourself ? !!!!!!!!!!!

clif

Yes, you MUST PIN it if you have a supercharger, turbo-charger, or NOS. Otherwise, the standard press fit will hold ok.

vettenuts

You don't "have" to pin it, but while its off it is a good idea. Since your new pulley has a keyway milled in it (Powerbond or ATI?), you can use the ATI kit to pin it and it will be much easier to remove/install later if you need to. The ATI kit installs the pin perpendicular to the crank snout. You can see where mine is drilled in the photo, a pin goes in the hole when installing the pulley.

DansVette

I am speechless right now, I am so mad I can barely think. I have never, NEVER seen anything like this. Why in God's name didn't they simply install a key like every other vehicle that has ever been created in the history of automobiles has ? They actually expect the person to drill some kind of holes at the end of the shaft in order to install this ? What about a new stock pulley, how on earth do the marks get properly lined up ?

dougbfresh

You GOT IT! Stupid design in my opinion.

DansVette

By the way, the pulley is an SLP.
http://www.lmperformance.com/6628/4.html

DansVette

The instructions by the way, just says to bolt the pulley on and torque, doesn't say anything about the key slot, or the fact that your car doesn't have the key to begin with.
Absolutely beyond belief.

LoneStarFRC

Marks? What marks? Don't need or use marks.

As said earlier, you don't "need" to drill anything to install your pulley or a stocker for that matter. If you hang a hair dryer or huffer on however, it is highly recommended to drill.

DansVette

There are timing marks on my new pulley, so I assumed the pulley needed to line up with something.
What am I missing ?

vettenuts

It just provides the option. My ATI has the timing marks, which I aligned as best I could by eye when I installed and pinned the crank. As for the stocker, no keyway in the hub. It is an interference fit. Also, don't use a bolt to pull it on, if you don't have the correct tool or a reasonable facsimile you will damage the threads. Here is the tool I made for installation. There are several steps involved as well if you are using a "new" stock bolt (old one shouldn't be used).

DansVette

So to get the timing marks lined up what would be the procedure ? Find TDC, then install it according to the correct timing, i.e. 5 degrees BTDC or whatever it should be at ?

dougbfresh

Why do you need the timing marks?

Y2Kvert4me

I dunno, but you can bet he's gonna be even more pissed to find out there is no distributor to turn.

LoneStarFRC

Again, the marks are not needed. Timing is not referenced there. The PCM determines engine timing.

sliderhd

What is the thread size for the installer thingy??

DansVette

Well before you guys make fun of me, I realize there is no distributor, but isn't there a some sort of crank angle sensor system that still requires timing markings ?

DansVette

In fact, isn't there a crank pulley installer that sometimes is recommended ?

Y2Kvert4me

No.

The PCM reads crank and cam position from sensors, yes.

There is zero need for any external pulley markings though, because there is not a thing you can do to adjust spark timing from within the engine bay.

If you have a laptop and some tuning software, you can adjust the values within the half-dozen or so timing tables within the PCM logic...but the PCM is always in direct control of firing the plugs.