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Oil cooler

texpis

texpis

New member
Hi All did a search but couldn't find the answer (Does the search function work?) I have emptied the radiator and removed the pipes and ther is oil in the water and I can feel it in the thermostat housing. There is not any oil on the dipstick. I am guessing the oil cooler? Can they be overhualed? The water radiator does not leak but the copper between the cores is rotten can these radiators be recored?

Mick
 
First off what model is your car.?

If its a S2/turbo. Then my guess is the oil gaskets that are between the oil pump/filter housing + block area, as they are prone to failing. As water passes through that area aswell.
 
Please could you give a little more information? Which model is your car? The water and the oil don't run together in the radiator. The only place they can get mixed other than a leaking head gasket is by the oil filter housing where it connects to the block. On the S2 and possibly other cars like the 2.7? Not sure on that. It uses the water to help cool the oil inside the housing but I think most 944's have a seperate oil cooler near the radiator instead which is a much better design. On those cars the waterway is blocked up on housing.

You say no oil on the dipstick?!? That sounds worrying? Is the car in regular use? Does it smoke at all.. I would think it would be fairly noticable to have lost that much oil unless it hasn't been checked for a long time.
 
Ha yes sorry about that. its a 1990 S2. The story so far I have just bought the car and I am renewing the belts and tensioners I found there was some oil in belt housing looking like its the crank oilseal, so I removed the radiator to facilatate access to the crank pully bolt. When I emptied the radiator there is some oil in the water, where the pipe came off the thermostate housing I can feel the housing has a coating of oil. I cannot see any oil in the expansion tank or on the oil dip stick.

Mick

by the way meant no water on the dipstick not oil [:D]
 
If I need to take the head off now is the time to do it any comments Guys? Spanners are heated up and raring to go [;)]

Mick
 
ohh I couldn't be sure enough without asking someone who does this more often whether a car with an external oil cooler 'always' has the better housing that blocks up that weak spot but honestly I can't see why you'd have both.

If it was me and I was able. At this stage with the engine quite heavily apart anyway I would take the head off and change the head gasket for comfort. Once its done its done and you know you can relax and enjoy the car properly. Plus while your there you can check the condition of the bores and if good keep a pic to show when your selling the car on:) Always gives a nice peace of mind.. although what is the mileage because I don't think many people have had to change the head gasket on an S2 under the 100,000 mile mark.
 
My bet is its the oil filter housing gasket...
Its usually that that fails.
Yes your S2 will have a oil cooler fitted , itl be at the front of the drivers side wing.
 
I would listen to Dave I'm becoming less sure of myself by the minute and don't want to be misguiding. Alothugh I am now curious to learn which cars are affected. I know my turbo didn't have the water cooled housing.
 
Thanks for the replies guys. Dave there is defintly a oil cooler in the wing the question is can the oil and water mix in this cooler, or can it still mix in the oil pump housing? milage is well over 100k .

Mick
 
The cooler in the front wing/valance area is just oil filled . Its a oil - air cooler. The water channels / mixing problems are in the filter housing.
The pipes leading from the filter housing are oil only pipes. Flow + return.
I had a problem with my old S2 + it was this gasket that had failed..
PS if/when you do the job, make sure its REALY clean around the seal, as even the slightest bit of contamination can cause problem.
And its not the easiest thing to get at, as there is a lot of stuff in the way, that has to come off.....
Sorry....[:-][:-][:-]
Hope you manage to fix it.
 
Hi All
managed to get the housing off (It was a pig to remove) there was water come out of the housing so there is a path for contamination. The instructions mention the need for a tool Alignment Tool 9215 can I do without this tool somehow or has anyone got one I could borrow.

The water pump looks like the origional but it seems perfect the bearings are smooth there is no play I am loathed to replace a pefectly good pump. What do you think?

Mick
 
Mick, Sorry i cant help with the "tool" as my mechanic did the job + he has the correct bit of kit.
Water pump, depends how many miles it has done .? But as youve got all the other bits off, its not a bad idea to replace it now.
Sometimes old ones have been known to fail after a belt change. Must be something to do with retentioning etc...
 
Struggling to buy this special tool, looks like I might have to wing it unless someone knows where I can buy/borrow one, tried porsche shop and Newcastle porsch centre with no luck.


Mick
 
Might be worth trying Tom Ferguson in Newcastle - he might have one - although you might not get the friendliest of welcome. There's also redline racing who are much closer to you.
 
Interesting you mention that, I popped in there recently and they weren't exactly helpful, thought it was just me! Is there something I don't know? PM if more appropriate than discussing it here.

Thanks
 
Nothing particularly - I went there a couple of times with a mate who had a 964 - seems to me he's just a bit of a grumpy old bloke... [:D]
 
Tried Tom Ferguson he said he didnt have one and Redline racing said they were a showroom only! It makes me think that they don't bother with it.

Mick
 
Hi All
So coolant gasket changed new belts new water pump I now need to flush the coolant system to remove any oil has anyone got any sugestions of a flush to use? The ones I have seen at motor factors does not specificaly say to remove oil.

Mick
 
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