rufrob

Hello fellow Rennlisters,
I took a look at an 86-951, which has coolant in the oil and intercooler piping.
I have never seen that before. I assumed it needed the oil cooler seals but the housing appears different from what I see I most pictures and in the parts catalog.
Are there different housings?

Voith

3 types. 944 with internal cooler, 951 (on your pic) and 968.

Taymar

On the 951, there is still coolant and oil inside the housing (separated, obviously).

I hadn't quite grasped that before I took mine off and was surprised to see coolant.

Borrowed this picture from a fellow rennlister and shaded it in roughly - I believe the green area is where the coolant enters the housing from the block. It seems like there is no outlet for the coolant on the housing cover, so I assume coolant just flows over this area as it's passing through the block.

The red areas I believe are where the oil passes through from the block to the housing, I'm not quite sure what goes to what though so don't want to spread misinformation.



Before I started this job, I knew about the turbo vs. NA housing differences, but I did not know that the turbo housing still had coolant in it. Made for a surprise bath when I took it off the car.

rufrob

thanks for the quick reply. i hope the seals i got from the seal kit i bought will work. And I pray that fixes it and its not the head gasket. This car is a real basket case. List of problems: coolant in oil, engine mounts, no power to heater control unit, weak shock absorber, clutch grabbing near the floor, incorrectly installed timingbelt that cut into the rear cover, filthy engine room, ball joints bad, not original paint, hideous new seat trim. The owner wants $3500. Body is straight, engine starts readily.

william_b_noble

well, if you were in the USA rather than Tokyo, I'd sell you a car in better condition than that for $3200 with nice fuches wheels and it's 100% original with all receipts, but shipping would not be cheap.

The seals in that oil cooler fail if the car has been overheated, they are easy to change and it is probably what is causing the problem.

rufrob

since its a US spec I may try to sell it in the US. I had an 88-951 years ago, it was great car. The car collection is getting out of control now. 4 is more than enough.

mhr

the seals and gasket are the same you just don't need them all. You will have one or 2 of the O rings left over if you have a kit made for a car without the external oil cooler.

rufrob

thanks.
now the moral dilemna. Do I tell the owner and fix it or do I buy for about the price of an iMac?

rufrob

Thank you all very much. I took it apart on the weekend to discover someone else resealed it with sealant. The O ring was hard and completely flush with the oil pipe. I could only see to replace 1 O ring and the housing seal after cleaning everything. Took me forever to take it off only to discover I didn`t need to touch the exhaust manifold, nor fuel lines. So far the coolant level hasn`t changed and after 2 oil changes the engine is sounding a lot better and oil is getting cleaner.
How can I tell if it needs crank bearings?
I adjusted the clutch pedal so it feels much better.
Next the blower motor fuse #15 keeps blowing. I guess the motor is seized. But does that explain why there is no power to the heater control unit?
Next mechanical issues are the lower control arm ball joints and shock absorbers.
Then to tackle the interior. Has anyone tried the dash recovering technique on Youtube?
Also the front bumper valance is missing. I did some searches to no avail. I wonder if anyone has made that valance? I bought a sheet of aluminum/plastic/aluminum board and made a splitter/chin guard for my 930. It has been very effective.

william_b_noble

order ball joint kits from Rennbay

rufrob

Why Rennbay? It looks to be the same part available at Pelican which I use in order to save money on combining shipment.

rufrob

I checked the heater control unit more carefully. Turns out it wasn`t plugged in properly. So yeah that works. Getting ready to bring it home. Pretty excited. I took a closer look over the whole car. It has quite a bit of transmission oil cooler lines, so I guess that means it has LCD. The muffler sounds very throaty and looks modified. Dont know why anyone would paint the entire under carriage black.
I will order all the parts once I check the brakes.

Grandpa#3

A big "IF" there is/was water in the engine oil it will have a milk shake color. If water is in the oil, Porsche recommends to change the Connecting Rod Bearings as #2 Rod Bearing is prone to seize up. The 951 turbo has a cooling ring attached to the transaxle. It could or could not be a LSD trans. The 951 lower valance used here cost run around $250 - $300 plus shipping. As for the dash cover the only one I've seen is the one on you tube. There is a company that sells a leather cover you can install yourself.

http://www.classic9leathershop.com/

Cheers,
Larry

rufrob

the dealer want to dump it so he is delivering it to me tonight. Tokyo is really special in that parking spots are tough to get. I would think that the bearing would have seized by now. I have no idea how long it has been in that condition, but I am guessing its been a long time judging from the condition of the seal.
Ill flush the oil again asap and refill it with proper 20/50 Valvoline.