Rookie 3.0 rebuild

[Amstaff]

Well, wasn't the key. I put the other side on and it is identical.

Can't go any further without some advice on this.

Someone please chime in!

[michael lang]

Originally Posted by Amstaff

I put this in a separate post but should the shaft protrude further than this?

Are you referring to the little pin not going in all the way? Or is there a problem with the cam not going all the way into the carrier?

[Amstaff]

Originally Posted by michael lang

Are you referring to the little pin not going in all the way? Or is there a problem with the cam not going all the way into the carrier?

Not the pin.

The fact that the cam shaft does not go all the way to the end of the sprocket.

Seems like it should

[Amstaff]

Found this picture that seems to show the same thing.

Maybe it is correct.

[Amstaff]

So checked chain alignment and this is what I got on the right side



This is the left side




Both are within specs

[Amstaff]

I put the cams in with the key way pointing up and the dot as close to straights as I could get it.

[Amstaff]

I took the tensioners and bled them. Simple yo do, break the bleeder nut loose, put it in a vise and SLOWLYcompress them. I did a little at a time backing them off every turn of the vise. When I could compress them with my fingers they were good to go. Tightened the bleeder and installed them. Large channel locks on the tensioner and a large screwdriver to pry the chain tensioner up and tapped them on with a soft dead low hammer.

Got both on and the chain is nice and tight. Once the cams are timed I will put oil in the top and pump them back up.

[Amstaff]

Put both necessary rockers on and torqued them to specs. A long extension with a 5mm Allen driver does the trick.

[Amstaff]

When you install the rockers make sure that the rocker shaft in even with the narrow side of the rocker shaft hole. That way the shaft will be centered in the rocker arm and it won't leak.

Now for the part that I am dreading...... TIMING THE CAMS!!

If you have a good link or suggestions on setting 964 cams in a 3.0 please post it for me.

[Amstaff]

Besides it taking several tries to get it right timing the cams are not as hard as I thought. I made a post looking to borrow the tool to hold the cam while it is tightened. As soon as I locate one I will post a how to.

If you have one that you wouldn't mind renting or loaning I would happily pay shipping.

[Amstaff]

Originally Posted by Amstaff

I took the tensioners and bled them. Simple yo do, break the bleeder nut loose, put it in a vise and SLOWLYcompress them. I did a little at a time backing them off every turn of the vise. When I could compress them with my fingers they were good to go. Tightened the bleeder and installed them. Large channel locks on the tensioner and a large screwdriver to pry the chain tensioner up and tapped them on with a soft dead low hammer.

Got both on and the chain is nice and tight. Once the cams are timed I will put oil in the top and pump them back up.

After reviewing my old pictures I realized that the left cam gear was on backwards. Pulled it and flipped it over. I think the chain alignment will be the same but I am going to check it again tomorrow evening.

[Amstaff]

Originally Posted by Amstaff

After reviewing my old pictures I realized that the left cam gear was on backwards. Pulled it and flipped it over. I think the chain alignment will be the same but I am going to check it again tomorrow evening.

Right gear goes on with the cupped end I and the left one with the cupped end out.

[Amstaff]

Checked my chain alignment and all is well.

Here is how you check it. First, with your straight edge measure the distance that the gear on the intermediate is from the face of the case. For my 3.0 you go through the hole at the bottom. Zero out the gauge when it touches the intermediate shaft gear. Check it a few times to make sure it is at zero



check the right hand gear holding the straight edge on at the same location that you checked the intermediate shaft gear. Check Wayne's book for what variance is allowed.

[Amstaff]

Then check the left gear. Again, check Wayne's book for allowable variance. I just hate to post specs when there are different specs for different engines.

[Amstaff]

Now on to cam timing!

No worries... I have this!

Look for updates Sunday

[Amstaff]

Start by installing the rocker arm for #1 and #4 making positive that they are both set properly with a feeler gauge.

Make sure the distributor is pointed at the mark that designates #1



Now back the engine up until the indicator quits moving which is just under 1/4 turn.

With the Z block in place and the indicator sitting on the top outer edge of the spring set the dial indicator to zero.

[Amstaff]

On my 3.0 with 964 cams I am going with 1.26 mm so rotate the engine until the indicator reaches 1.26 mm. If the Z mark isn't exactly lined up with the engine parting line pull the pin and rotate the engine followed by reinstalling the pin.

Oh, and stuff a rag in the bottom of the chain housing, I had a close call with the cam sprocket pin.

Once you have it set right torque the bolt down using the correct tool.

Then do the other side.

[Amstaff]

[Amstaff]

Then set the distributor to #4 and repeat

[Amstaff]

Once torqued down check the setting one more time to make sure that it didn't move.

Then.... Cam shaft timing is done!