clutch install ?

[71swing]

I believe I asked this questions before the install, but got no answer.

The car is a AOD car that I converted to 5-speed. I purchased everything new.

Tremec TKO 500, Ford King cobra clutch, Ford 50oz flywheel.

The question is when installing the the clutch to the flywheel, did I need to line up any reference marks to make shure everything is balanced.

Now when I installed I didn't not think this was needed but I have recently come across a few articles that mention line up some refernce mark up.

The reason for concern is I have a small vibration around 3,000 rpms but goes away around 4,000.

Could either be coming from the back of the crank case, or from the bellhousing.

Operation of the tranny itself is great. Shift smooth and the clutch works great too.

 

[71swing]

?

 

[5spd GT]

There is no need to make reference marks, the pressure plate and clutch should already be balanced, along with the flywheel. They have close enough tolerances where it should not be an issue.

Now your pressure plate is supposed to line up with 3 flywheel dowel pins that should be in your flywheel. Now, I don't know if this is your issue, but I doubt it...

Also, when you stick in your clutch disc, you are supposed to use a clutch alignment tool that goes thru your clutch disc teeth and rest in the pilot bearing.

But again that may not be the problem either, because it would be pretty difficult to install your transmission's input shaft without it being 'close enough'...

Just some ideas and a bump for ya...good luck!

 

[Lyonmt]

Like 5spd said, there are no reference marks, as long as you hit those dowels, you are good. You wouldn't have gotten it together if you didn't. The dowel just keeps things lined up so you can get the shaft in there, so that has nothing to do with your issue.

You really just need a reference mark for ease of lining up the driveshaft.

The vibration could be from any of the parts you installed being defective. Did you use the same driveshaft? If not, that would be the first place I checked.

 

[xc600]

Somewhat related

I'm in the middle of a clutch job on my 95 GT and was wondering if, considering the flywheel has an offset weight built into it does it get indexed a certain way when bolting it back up to the crankshaft??? I can't say I marked anything before pulling it apart, but then again I don't remember having to do it before either.
I don't mean to hijack the thread, but it is a similar question.

 

[bynummustang]

Clutch alignment tool. Just stick it in the clutch then mount it to the motor. You HAVE to hit those dowels.

 

[5spd GT]

I'm in the middle of a clutch job on my 95 GT and was wondering if, considering the flywheel has an offset weight built into it does it get indexed a certain way when bolting it back up to the crankshaft??? I can't say I marked anything before pulling it apart, but then again I don't remember having to do it before either.
I don't mean to hijack the thread, but it is a similar question.

The flywheel can only bolt up one way. The 6 holes only line up one way, you will have to turn the flywheel over the bolt holes until all is clear...

 

[bynummustang]

Did you ever have the little game as a kid where you put the Circle block in the Circle cut out piece? Square goes in square??

There really is only ONE WAY that the thing will line up and fit. The only thing you'll need is the clutch alignment tool. Mine was 3 bucks at Advanced Auto.

 

[Darkwriter77]

FWIW, the alignment tool comes with just about every clutch kit out there - if it's not included, maybe you got cheated...

The whole assembly pretty much won't bolt up completely unless you've got those splines all lined up. Someone else recently posted about a clutch install they did where the shaft went in just far enough that they THOUGHT that they had it bolted together, but the tranny absolutely refused to disengage the clutch outta gear completely - as I remember it, there was a gap between the tranny and the bellhousing because the input shaft wasn't completely seated in there. That's about the only case I've heard of someone actually getting the thing together without TOTALLY getting the splines lined up, but otherwise, it's pretty much a YES/NO deal - either the input shaft made it through there, or it didn't. If you're able to drive it around at all, I'd say it's a pretty safe bet you've got it good, as far as that goes.

Likewise, the clutch diaphragm isn't a terribly exact science in installing it - just hang it there on the dowel pins of the flywheel and start tightening it down in sequence to torque specs. If you didn't tighten it in a criss-cross manner (like you would on, say, the lugs of a 5-lug rim) and/or you didn't torque it down evenly to spec, there might be a possibility that it's warped.

As far as the vibration ... I kinda got the same thing going on my Notch after I swapped in my King Cobra, as well, and at about the same RPM. I also get it above 70 MPH. However, I swapped my stock steel driveshaft out for an aluminum FRPP unit, so I can't completely rule out that part as being imbalanced; likewise, I installed a new flywheel, so I'm kinda uncertain if it's possible for it to be improperly balanced from the factory.

Sorry if some of those suggestions are sort of non-answers, but they're just some possibilities I figured I'd throw out there to consider.

 

[BYRDPE]

Try rotating your driveshaft 180 degrees.