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milk shake- oil cooler seals- rod bearings - (Read 2108 times)
IAN - 944ONLINE
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milk shake- oil cooler seals- rod bearings -
Mar 20th, 2009 at 2:45pm
 
I know you guys get sick and tired of me constantly
going on and on , that if and when , your oil cooler seals fail you should replace your rod bearings -
the failure of the # 2 connecting rod bearing is one of the most common major failures on all the 944 models -
when the oil cooler seals fail , and you have the  " milk shake " in the expansion tank Porsche recommend that the rod bearings be changed -
I don't know why its allways the # 2 rod brearing -
I don't know the path of the oil through the system - but I think its the last one to get fed oil -that why customers cross drill cranks on race engines -
anyway
I hope this helps -
and as I tell you guys all the time
its in my best interest to keep your cars running

ok
here's the link to the oil cooler seal gasket set

http://944online.com/index.php/oil-cooler-housing-gasket-set.html

and the rod bearing kit

http://944online.com/index.php/rod-bearing-kit.html

and without you I'd be working for someone else !!

here is the cooler housing


and the cylinder walls of # 2 �cylinder



and the remains of the rod bearing


And here is the link to the parts side showing the items -
oil cooler gasket set �- with instructions
and the rod bearings kit

http://www.944online.com/cgi-bin/ASI_Store.cgi?Product+skukey_1000922+9441+Engin...

and I have this too

and thanks to member pcar
for this write up on oil pan removal

Had my pan off a couple times recently.
Not so bad a job.
Hold up engine from above.
I used a steel bar from strut top to strut top that had it's ends wraped with lots of rags.
Tied the ends of the bar so it wouldn't move.
Used 2 ratching tie down straps,each attached to the engine mount arms,to hold the engine from being able to move downward at all.
Took off the non-power steering rack and sway bar assembly.
Dropped the ball joint end of the swing arms down off the spindles.
Took the 2 bolts for the swing arms out of the cross member.
Left the rear swing arm attachments untouched.
Used mechanic's wire to keep swing arms out of the way as best possable.
Removed the 2 lower engine mount stud nuts and washers.
Loosened well but not removed the 4 engine mount attachment upper bolts.
Removed the right engine mount small heat shield.
Removed 4 large crossmember attachment bolts.
Removed the AC/Alt. belt tension rod and belt.
Loosened the AC compressor attachment bolts and wired the compressor out of the way best possable.
Then it's remove the oil pan.
Rather simple compaired to many autos of today.



good morning and welcome to the forum -
its an easy thing to do - a little time and effort - and lots of shop rags as its a dirty job -
unhook the battery cables -
take out the spark plugs -
to drop the oil pan put the car in the air on jack stands-
and support the engine - easiest way to do this is by a chain - or a strong rope - attached to the pick up points on the engine and looped around a bar - or 2 x 4 - resting on top of the strut mounts -
loosen the bolts holding the engine mounts -
also this is a good time to check the condition of the mounts as its a common failure part as well -
drop the cross member as much as you can -
and undo the oil pan bolts
now you can get to the rod nuts - undo them and relace the bearings -
clean up the oil pan -
and do all of the above in reverse -
I know it sounds like a lot - but its really easy -
its such a common thing that we have customers do this between races at the track -
THE most common failure we see on 944's as they get older is the failure of # 2 rod bearing -
and when it goes it will score # 2 cylinder wall -
its easy to do -
its cheap insurance -
I can not stress how important it is to do this on any 944 - 924s of any type if you have 100 + k miles on the engine-
now - another thing -
IF and I say IF - at some time in the past the oil cooler seals have failed this is also cause for the rod bearings to fail -
PORSCHE actually recomend that if the oil cooler seals fail then the rod brerings MUST be replaced --
the oil cooler is located in the little blister housing on the right side of the engine where the oil filter mounts - the oil cooler is cooled by water - the housing is seals to the block by a large o ring type seals -0 and the cooler itself by o rings and one particular o ring -kinda like a donut - that turns to mush after a few years - the result is that oil get in the water and you have a " milk shake " in the expansion tank -
so at the same time as you do the rod bearing why not do the oil cooler seals at the same time - your in there - your dirty and its cheap insurance -

also Texas Blake did a fine job in the " how to " sh
« Last Edit: Oct 14th, 2016 at 5:40pm by XxSteve944onlinexX »  

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IAN - 944ONLINE
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Re: milk shake- oil cooler seals- rod bearings -
Reply #1 - Sep 10th, 2010 at 1:15pm
 
ok
I have more info on oil coolers and comments !!

here are a few pictures of oil coolers we took out

before




and after we had sandblasted them  -THROUGHLY cleaned them AND pressure checked them




and here's one that failed the pressure test




same thing on the oil cooler housings

before



and after



ok - see all the crap thats clogging the oil cooler ?
where do you think that all came from ?

yes your correct  - the radiator

and how well do you think the oil cooler is working ?

yes your correct -  not worth a d**n

as we all know we have problems with these cars running hot
this is just one more area / problem that we must check

and as I like to say  - its cheap insurance

I will have later next week and inexpensive oil cooler tool to check them for pressure

thanks for reading this
  

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IAN - 944ONLINE
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Re: milk shake- oil cooler seals- rod bearings -
Reply #2 - Sep 16th, 2010 at 4:37pm
 
new oil cooler testing tool -
works very well -

$19.95



  

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IAN - 944ONLINE
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Re: milk shake- oil cooler seals- rod bearings -
Reply #3 - Jan 16th, 2013 at 7:12pm
 
PLEASE
GUYS
REPLACE YOUR ROD BEARINGS !!!!!!

Hello Ian,

I am new to 944 Online.  I am located in east tennessee. I have an 86 944 Turbo with a scored number two cylinder, not sure if I should put it back together an run it or look for a replacement engine? 

I have been looking for a replacement engine, any suggestions or leads on where I may be able to come across one or two? That is if you believe that would be the correct route?
  

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