How to attach a timing wheel to a crank?

[R.J.]

How to attach a degree wheel to a crank?

Comp sells a $30 tool for this that holds the wheel and allows you to spin the crank independently. But I don't know if its worth the money. Other wheels come with aluminum bushings that center the wheel and use the damper bolt to install. Do the bushings work? Is the tool worth it? What are you guys using? Thanks

 

[GTA_V6_Mustang]

Are you converting over to COP? Because on the regular 5.0 the timing marks are on the HB and they dont mean anything but when you are trying to set ignition timing because its otherwise controlled by the dizzy and PCM.

 

[R.J.]

I meant degree wheel.

 

[R.J.]

Anybody?

 

[Chythar]

After a bit of research, I think I now know what you are talking about. You left out a lot of detail on this post; next time, some links would come in handy. For anyone else reading this post, here's a link tithe Comp Cams web site:

COMP Cams Catalog - Sportsman Professional Degree Wheels Crankshaft Sockets

RJ is talking about the Crankshaft socket at the bottom. This locates the degree wheel on the crankshaft rather than the cam, and provides a way of turning the crank without removing the wheel.

I've never rebuilt an engine nor timed it that way, so I couldn't tell you the benefits. At a guess, I would say the crank degree wheel might offer a bit more precision due to its size, but that's all I can see.

 

[R.J.]

If you look at Summit Racing's degree wheel it comes with centering washers. It looks like they fit in the center of the wheel and then the damper bolt holds the washer and the wheel to the crank? Summit Racing SUM-G1057 - Summit Racing® Cam Degree Wheels - Overview - SummitRacing.com

 

[Chythar]

Well, the Summit one attaches to the cam, not the crank.

 

[R.J.]

No, there are directions on the link that I posted for installing the wheel. Step three says "Install wheel on the front of the crank shaft using balancer bolt and aluminum bushings"

 

[Adam95GT]

Overview Degreeing a cam


some info.

 

[revhead347]

I've never checked the centerline of a cam in my life. To be honest, modern cams are so accurate it's just not necessary. That's like taking apart a new oil pump to check the tollerances. It's just not necessary.

Kurt

 

[Adam95GT]

I've never checked the centerline of a cam in my life. To be honest, modern cams are so accurate it's just not necessary. That's like taking apart a new oil pump to check the tollerances. It's just not necessary.

Kurt

There is some gains to be had epically for the 4v mod guys... if you think about it though thats 4x the cams we have and if they are all just a little off it makes a big difference vs our single cam...

 

[revhead347]

Honestly, I never understood it. How can a cam company get the duration, lift, and lobe seperation almost perfect along the whole cam, and then mess up the centerline. I always figured the centerline would be as accurate as the rest of the camshaft.

Kurt