bendavis2

I got all of the parts for my front seal replacements, except for this little black o-ring, which is broken. I'm stuck mid-assembly, and want to order the replacement, but a part this small (and insignificant?) is hard to find.

Does anyone have the part number, or name of this part? It's the small black o-ring in the picture.



(**photo courtesy of Bruce Arnn at www.arnnworx.com. Used without permission, but it's the only place I've found that has a picture of this, and it doesn't hurt to give Bruce a free plug for his wonderfully documented reseal procedures and tools: http://www.arnnworx.com/front_seals.htm)

75ohm

Call Ian or Jamie at 944online.com

This may be it: 999 707 283 40

Lemming

Not 100% sure, but I think it might be 900 174 049 40 (seal 28x2.58).

bendavis2

It looks like you are both right:

Pelican shows that 900-174-049-40 is superceded to 999-707-283-40.

It didn't seem right at first, since my o-ring was so compressed that it felt like formed plastic, and had a non-circular cross-section from being jammed against the sleeve. But that must be it! (It didn't help either that the replacement o-ring is green, and the OEM was black.)

Thanks for the insight guys!

Off I go to order an 81 cent o-ring that will cost $5 to ship. If only I could find a generic o-ring that was the right size locally. :-(

Ben
1983 Porsche 944 n/a
Portland, OR

75ohm

Good luck!

bendavis2

Of all the places... my local Porsche Dealership had one that just arrived in stock today, 100% coincidence. Not bad! Plus I got to drool on a few of their cars.

The o-ring they sold me was pink, which is a little disturbing, seeing as how it's a manly-man's car, but they assured me it was the right part.

Hooray, and thanks again for all the help.

500

I have a new OEM one, also from the dealer, and it is pink too!

cruise98

It is also the same o-ring that fits on the water pump at the turbo supply fitting. Dealers usually have the pink ones. Why this does not come with the front engine reseal kit is beyond me. If you leave it out, it will make a huge mess and ruin your belts.

Mamooguy

Nice girly-gasket!

bendavis2

I just want to add, for reference sake, that this O-ring was not originally an o-ring on (to the best of my knowledge) early 83 944's. I'm not sure about later models, but upon detailed inspection, this seal on my early 83 was molded plastic. I thought at first, that it was just compressed rubber, brittle from heat and pressure, but it was plastic. Hence the above-mentioned part supercedence.

So far, the girly pink o-ring seems to be doing its job.

KuHL 951

Does anyone know if the balance shaft mylar seals come with the standard 944 front seal kit? I don't want to open the sealed package until I'm completely ready for reassembly. I bought everything I thought I would need for my rebuild at one time only to find out the o-ring for the oil pump isn't included. Makes me wonder what else I might be missing like front cam seal components.

AKCJ

Steve,
I recently got the front seal kit (from Paragon) and it did have the mylar seals. They were crumpled and broken but yes, they were in the bag with the other seals. If you're short on time I would recommend ordering extras. . . .
Jerry

KuHL 951

Thanks Jerry. I ordered them and the oil pump o-ring today from Sunset Porsche since I was snapping up that great special on the Factory Service Manuals. I'm sure some other roadblock will be thrown in my way for want of a $2 gasket or part.

FRporscheman

My seals kits have also always come with the mylar washers.

That pink looks like the pink they use in ******.

cruise98

Arash - I did not want to know that!

Here is the somewhat complete and posted to death parts list for an '86 that I have created and added to over the years.

944 8 VALVE FRONT ENGINE SEALS, BELTS & WATER PUMP PARTS LIST
From engine # 43F 06995 (1985) thru 1986 8 valve engines

Camshaft

1 each O-ring 999.701.602.40
1 each Woodruff key (optional) 900.117.045.00
1 each O-ring (onion skin) 944.105.321.00
1 each Spacer 928.105.139.04
1 each Seal 999.113.349.40
1 each Bolt (optional) 999.510.022.08
1 each Toothed roller 944.105.027.04
1 each Stud 944.102.216.01
1 each Flanged Nut 944.102.243.00
1 each Locknut N .022.149.0
1 each Washer N .011.527.12
1 each 7 mm Spacer (you can shim with washers) 944.107.911.01
1 each Smooth roller (for updated pump) 944.105.241.03
1 each Rubber seal 928.105.184.00
1 each Belt 944.105.157.04

Crankshaft

1 each Seal 999.113.331.50
1 each Sleeve (oil pump drive) 944.107.161.02
1 each O-ring 999.707.283.40
1 each Woodruff key (optional) 900.117.036.00

Balance shafts

1 each Seal (upper, cw rotation) 999.113.282.40
1 each Seal (lower, ccw rotation) 999.113.281.40
2 each Spacer 928.105.139.02
2 each O-ring (same as cam) 944.105.321.00
2 each O-ring 999.701.652.40
2 each Woodruff keys (optional) N 012.708.2
1 each Toothed roller 944.102.025.07
1 each Smooth roller 944.102.277.06
2 each Locknuts N .022.149.0
2 each Washers N .011.527.12
1 each Belt 944.102.219.02

Water pump

1 each Water Pump 951.106.021.10
1 each Water Pump Gasket 944.106.132.04
1 each Block off plate (NA only) 944.106.313.00
1 each O-ring 999.707.283.40
2 each Bolt 6 x 20mm (optional) N .014.704.1
2 each Washer (optional) N .011.524.7
1 each Thermostat 944.106.019.00
1 each Support Washer 900.234.160.00
1 each T-stat O-ring 944.106.929.08 or
944.106.929.05
1 each T-stat snap ring (can be reused) 900.042.025.01

The two items below are only required if the car has never been updated or the parts are damaged or missing
1 each Guard rail (for updated pump) 944.105.210.01
2 each Lock nuts (for guard rail) 999.084.092.02

Notes:
1. Spacers and oil pump sleeve should be replaced if they have wear grooves, or burrs which could damage a new seal. Use some fine
grade scotch brite to clean up the old ones, but replace them if in doubt.
2. The front crank seal is prone to leaking if not installed perfectly. I use an old crank gear and oil pump sleeve that I honed the center
bore of to make it easy to slide on and off the crank, and use these two as pressing tools along with the crank bolt to press the seal
in squarely until flush with the oil pump face.
3. The balance shaft front housings must be removed to properly reseal them.
4. Oil seals and o–rings must be thoroughly lubricated before installation. I use silicone o-ring lube on o-rings and multi-purpose grease on seals.
5. For coolant, use a phosphate and silicate free coolant mixed with distilled water. Zerex Extreme Extended Life is one example.