Bolting engine to Tranny - Can't get em together

[911SC Do it yerselfer]

Help, Tips?
I put a new clutch assembly (disc, pressure plate, throwout bearing, pilot bearing) on my 83 911SC motor. Both the tranny and motor are out of the car. Now that I try to slide the tranny and engine together they get stuck on something about an inch shy of coming together. I greased the Throw-out bearing, centered the disk, made sure the clutch fork slid into the T-O bearing, removed the starter in case that had something to do with it... still I can't get them together. I suspect the main shaft of the tranny may be getting stuck on the clutch disk but I can't say for sure. Any tips/advice?

Steve 83 911SC Cabriolet

[GB83SC]

Did you use a clutch aligment tool when you put it in place?
I did my clutch a few months ago and it whent right back in. Try to move the drive shafts back and forth and make sure the angle is correct.
PS/ dont forget to replace the starter ring back onto your flywheel!!
GB83SC

[RoninLB]

There is a tecnique for alligning throw-out bearing. Read your book.

[Superman]

My suspicion is that the clutch alignment tool was not used or did not succeed in aligning the friction disk with the pilot bearing.

Also, I made the mistake of assembling my clutch with the forks against the BACK of the TOB. I think you are aware of this big mistake, but just in case, thos windows in your bell housing are there so you can make sure the forks are engaged into the wide groove at the OUTER EDGE of the TOB. You see, the forks pull on the TOB, they do not push on it like "normal" cars.

Thos crazy Germans. On my Rabbit, the PP was bolted to the crankshaft and the flywheel was bolted to the PP. Go figure.

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'83 SC

[911SC Do it yerselfer]

Thanks for the tips. I did use the clutch alignment tool and the clutch disk does look like it is correctly aligned. Still it could be off just enough to cause the problem. I am thinking out loud here but probably that is the problem. I can't think of anything else.

Fortunately I didn't forget the starter ring and I made sure the clutch fork slid into the big groove in the T-O bearing. I'll try loosening the pressure plate then recentering the disk to see if that does it.

Steve 83 911SC Cabriolet

[Roland Kunz]

Hello

Did you center the clutch ?

Sometimes they come very hard together as the starter gear ring is very close to the clutchhousing and any missangle will make it stick.

One trick is to engage a gear and turn the trany axle shaft while blocking the other.

An other helper must guide the trany and press a bit from the trany frontend,

If this aint work then remove it again and look close. Any thicker scrafing inside the bell housing ? Clutch aligned not to much grease in the needle bearing ? Staterring pointing inwards ? TOBearing fork ok ? Removed the big TOB lever on the underside ?

If everything is proper then it sometimes stick very close to the end. Then use two nuts the frist at the stud from the starter and bolt it carefully on.

To go sure you can remove it again and check again then return musst be easyier ( If you hit the right 0° angle )

Grüsse

[davis911s]

Recheck the clutch with the tool, I had the EXACT same problem ( I never had the Porsche allignment tool) But I did get it to fit, With mine that was the problem, let us know

Shawn

[JordonJames]

I had the same problem. Checked and rechecked everything and still didn't seem to want to mate up. It finally just took some "persuasion" to go the last inch. I know it's counterintuitive, but everything works great. My feeling is that these things just have close tolerances and that makes it tough.

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Jay
'68 912 V8

[911SC Do it yerselfer]

SUCCESS!!!
Thanks for the great tips! It was the disk alignment. I loosened the pressure plate and just realigned the clutch disk with that plastic alignment tool. Retorqued the pressure plate bolts. Then tried sliding the tranny and engine together. It slid together like butter. Absolutely no "persuasion" needed.

Steve 83 911SC Cabriolet