Does anybody know what the part numbers for the the 928 rod bearings are from other companies?

I have the part number from Porsche, but I am sure that Porsche buys them from someone else.

Like Clevite, or somebody else
?

Thanks,

 

Just wondering, why are you changing them? I just changed mine thinking that they had to be loose after 130+k miles and was astounded to see that they were in great shape. I changed them anyway, since I had already bought them and was in there. They had a 11-85 date code on them so I'd bet they were original. (they are still on my bench to show my gearhead friends their condition!)

They go for less than $100 a set at the big three. Not a place to be budget minded in my book.

Dave

 

I had a very similar situation. My 83 S had about 120,000 miles on it at the time I was replacing my oil pan gasket. And I too thought ‘well since I was in there I may as well replace the rod bearings’. I had also heard all the stories about rod bearing failures (mostly during track use). I too was amazed at the condition of the old bearings, both visually and measuring them. But…..it was cheap insurance, and worth it for those (like me) that worry about these things.

Randall Welch
Mission Viejo, CA
BITCN 83

 

Sign me up.

I have a slight bearing noise especially at start-up.

"that ain't opportunity knocking"

Seems like the perfect holiday gift to my engine while replacing engine mounts and pan gasket.
Any BTDT things to watch out for on the subject?

Greg

 

Hey Greg!

I thought that my noise at startup was the rod bearings but it turned out to be the oil check valves in the heads. It sure sounded like rod bearings to me and only did it on a cold startup and went away as soon as it started to warm up.

I thought it was better to be mis-guided on the safe side and changed them anyway. Didn't help the noise at all.

BTW, purchase one of the rubber/cork composite pan gaskets off e-bay ($15), they are supposed to be much better than the factory piece. I found this out after I was done but no leaks as of yet.

Are you using the Ford mounts? I did and am quite happy with them so far. On good pavement at 80/90mph it seems to glide, smooth as silk.

If you don't have an engine hoist available, you can cut two 2x4's to length and use them to hold up the engine after you remove the motor mounts. It's easy to do the rod bearings around them.

Any other questions, feel free to ask. I'll be glad to help.

Dave

 

Hi Dave,

I'm still deciding about which mounts to use. I'm leaning towards the ford mounts. Can you tell me what size spacers you used?

As far as the bearing noise, if you stand near the driver's door, the sound is there most all the time, but louder when the car is cold. It's pretty quiet when the car is warm. DR listened to it at Frenzy. At first it was barely noticable, then he heard it and agreed that it was probably the bearings. Since the mounts are shot, I have to be there anyway.

I'm timing the engine work to the delivery of a transmission valve body which S. C. (no, not Santa Claus, well, kinda!) should be sending to me hopefully soon. I want to do it all at the same time. I have a laundry list of things to do to the car this winter, if I get most of it done, it may see new paint by spring.


Greg

 

Well, the engine could have over 200k on it. I will have the pan off for a gasket change, and I will also be under there for a oil pressure sender change. I actually found a very good price at:

<a href="http://www.paragon-products.com" target="_blank">www.paragon-products.com</a>

They have a set for 38.50, and you buy two sets of four. These bearings are the SAME as te 944 requires, so there are alot more 944 guys out there doing this and looking for good prices on GOOD materials. The problem is that you have to buy 16 new nuts, and those for some reason are 2 bucks each. Devek has them for 1.50 though.

 

The spacers I used on the Anchor #2698 motor mounts are some I sourced from the local nut and bolt supply store. They are 2" across with a 13/16 hole and about 1/8th" thick, 2 per side. That brought the oil pan up level with the crossmember. If you use the Ford mounts, you will need to get nuts for them also. I got some good Nylock ones from the same source as the washers.

I bought the bearings and nuts from GPR (German Parts & Restoration 1-800-321-5432). The bearings were $90 for a full set and the nuts were $1.35 each. (ALWAYS use new nuts!) An oil pan gasket from them was only $11.28, but I would use the one on e-bay instead.

I do have a bit better piece of mind when at redline knowing that the rod bearings are in good shape. (Now for the rest of the engine!)

Enjoy the ride!

Dave