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rufrob's Avatar
 
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Finally some love

After finishing a 928 restoration I finally got time to spend on my 86-951.
First sand of the cheap cracked rattle can hardware store paint and apply more expensive auto paint.
The clutch was smooth when I got the car, but after coolant leak at the heater valve hose it started the chatter in reverse. I pulled the clutch and i saw this some odd marks on the friction material. The disk looks almost new and the grease looks fresh.
Did I just waste an afternoon?
The torque tube bearing sounds quite.


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Old 04-07-2019, 02:50 AM
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Quote:
Did I just waste an afternoon?
you pulled the clutch in an afternoon? I just had to replace a broken clutch fork on my 86 951. probably 25 hrs for me.

been fighting a small coolant leak from the turbo WP fittings. going back in for the 3rd time today.

DE in three weeks so it HAS to be done soon. after that only thing left is alignment.

after that, back to the 928 brake issues, new MC sitting on the bench.

will I EVER get my 78 930 built?

good luck
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Old 04-07-2019, 06:26 AM
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This whole "coolant got on my clutch" thing is way overblown around here. The friction material is not going to fall apart if it gets a little water/coolant on it.

You have a brand new clutch disc there, as can be shown by the ink marking still on the friction surface.

What the PO didn't do is to have the flywheel machined and surfaced to help bed in the new clutch plate, which is why you are getting chattering. What I would do is to hit that flywheel ( and pressure plate if it isn't new) with a dual action sander to scuff it up. That will help to bed in the new clutch disc properly, but you will still likely get some chatter until the disc wears in enough to follow the non-flat shape of the flywheel/pressure plate.

The proper way would be to take the flywheel off and have it machined, and get a new PP. You can even get that assembly balanced by the machine shop, something I did when I did my clutch 10 years ago.

Agreed that you must have worked quickly to get that done in one day....
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Old 04-07-2019, 10:31 AM
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Thank for the info. I have done this type of job many times, on my back in the gravel. This is a step up on a concrete driveway. I once pulled a clutch on an 944S2 in 1 hour. This is my first time doing a turbo. It appears the PO didnít really torque things down so most of the bolts came off pretty easily.
Regarding the coolant leak it was quite a lot actually first I for got to torque the housing where the heater valve entered the block then the hose split causing a slow leak. Itís was right after that itís started to chatter/and shutter. Guess Iíll do the rear main seal sand the flywheel and pressure plate. I bought a new clutch disk a while ago so it will go in.
Re: torque tube its spins feely and quietly so Iíll leave it alone for now. I would love the remove the black paint the PO applied the the rear undercarriage, transmission and all.



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Old 04-07-2019, 03:25 PM
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I removed the flywheel cleaned and sanded it along with the pressure plate.
I cleaned the original clutch disk and distortion to the material is clear.



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Old 04-08-2019, 02:04 PM
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How to clean this?
Iíve power washed it and scrapped as much grease and dirt off as possible.
And remove the black paint

Otherwise itís not looking bad.


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Old 04-11-2019, 05:05 PM
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One of those steam wands has worked well for my friends.
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1987 944S - Restored salvage title, ready to live again
I can fix your late 944 Cruise Control module - PM for details
Old 04-11-2019, 07:45 PM
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if you're planning on bigger HP now is a good time to upgrade to the KEP aluminum pressure plate and 930 clutch:
https://www.kennedyeng.com/clutches?lightbox=dataItem-j62qgxs7

references in this thread:
Clutch R&R = Waterpumper porn
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Old 04-12-2019, 12:10 PM
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Progress


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Old 04-12-2019, 10:20 PM
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Got new Crank and Reference sensors and she started perfectly, clutch is smooth and tach works again. Yeah!!
The cycle valve nipple is broken so Iíll go for manual boost controller.
Next the persistent minor oil leak between the cam housing and front crank seal.


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Old 04-15-2019, 08:18 PM
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Wow, impressed on how you accomplished these tasks in such an expedient matter! I've been lacking in that department with the belt change on my '89 car. Only 4500 miles on belt, but it was last changed 11 years ago. Checked it last summer, looks new, but, still, time to get 'er done! Car is in Wisconsin now, the weather is finally cooperating.
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Old 04-16-2019, 04:14 AM
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If I could dedicate a full day to this car. Thatís why itís taken a month! Work gets in the way. Best get that tbelt done. ASAP. Luckily Porsche part quality is very high
So the risk is low of catastrophic damage. But still, a couple of tools and an afternoon and you are done.


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Old 04-16-2019, 04:38 AM
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After doing the front cam seal and new intake manifold gasket and new crank and reference sensor a horrible metallic grinding sound at crank and starting. I forgot which sensor took the shim so I ground up 1 new sensor. Duh!!



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Old 04-18-2019, 04:04 PM
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I made this mistake when replacing the clutch on my 951. new alum flywheel and had to set the reference pin height.

but before I buttoned it up realize that pin would contact the bell housing and reexamined my work and realized the mistake before there was damage.

good luck on getting it fixed.
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87 924S resurrect and gut and another track car...
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78 930 clone project car.
Old 04-19-2019, 06:25 AM
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Not bad for a rattle can paint job. Less than $200.
Now the clutch hose is leaking.


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Old 04-20-2019, 02:45 AM
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Luckily I still had the old ones with damaged connectors. Iíll order a new one.
Does anyone know how to repair the edge of the sunroof panel? A lot of mine cracked/broke?


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Old 04-20-2019, 03:48 AM
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Sunroof panel is fiberglass, so anyone with those skills should be able to fix it.

Is your oil pressure sender wiring backwards? I see that you have 5bar oil pressure while the engine is not started....
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NASA/PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
I can fix your late 944 Cruise Control module - PM for details
Old 04-20-2019, 09:34 AM
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Re the sunroof panel I asked a body shop which said no. Itís not really fiberglass but something akin to drywall. So for now I screwed in a metal lip in the damaged areas.
Re the oil pressure switch the car was running. The tachometer would often not work. That was the problem I was having why, I changed the crank and reference sensors. Before I screwed them down, thus damaging one, the tach worked.


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Old 04-20-2019, 03:30 PM
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Finally starred driving it. Amazing how 944 slowly wake up after long periods of inaction. Slow windows, tach intermittently works, headlights raise slowly. Suspension crashing about. The more I drive it the better it feels.
It was only boosting 1.2. Installed a MBC locked it and I get full boost.


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Old 03-09-2020, 04:19 AM
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Installed the sway bar from an 89- auto. Didnít know the 89 was so much thicker than the 86 turbo.


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Old 03-21-2020, 04:20 AM
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