Oil cooler hoses on Turbos
#16
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I was changing the oil today, and had all the oil out when I decided to try to get my leaky hose off. I had heard that you can remove the hoses without removing other parts, ie the oil filter housing. However, this is not possible with normal tools as you need to counter a 27mm nut against a 32mm nut in too small an area.
I had to continue with the oil service and leave the old hose on.
I had to continue with the oil service and leave the old hose on.
#17
Three Wheelin'
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Put the counter holding wrenches on from above. Then you can do it without removing the housing. If you have any trouble getting the wrench over the top, then first break the adapter loose using the big flare nut on it's own... then you'll be able to rotate the whole thing a little. That's how I did it. I definitely didn't remove the oil filter housing.
I had the adapter loose and rotating by hand, but could not counter the nut in that space.
If you could do it from above I wonder how.
#18
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That would have worked except the exhaust heat shield left absolutely no options from above, in attempting to get to my leaky hose. The nut was behind the heat shield, although you could see the nut through a space - but a wrench or other tool would not go through this space.
I had the adapter loose and rotating by hand, but could not counter the nut in that space.
If you could do it from above I wonder how.
I had the adapter loose and rotating by hand, but could not counter the nut in that space.
If you could do it from above I wonder how.
For the ones near the oil cooler itself, there was nothing solid to brace against, and not enough room to use a pipe over each wrench. So I put the 2 wrenches on at a small angle to each other, then squeezed them together with the biggest channel lock pliers I could find. That took a few tries too because it kept slipping and everything would fall apart, but it eventually worked. The 5th fitting, which joins one of the rubber lines to the metal line I think - I never got that off. The guy in the hydraulics shop I brought them to did it, and he said it a tough one.
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s85b50 (08-06-2022)
#19
Three Wheelin'
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I think I reached up from below and carefully got the wrench in place by feel. Then IIRC I put the main one in place and carefully loaded it up until there was enough pressure on the counter wrench that it wouldn't go anywhere. It probably took me a few tries. IIRC the 2 lines enter the housing at right angles to each other - for one of them, the wrench braced against the body at the side of the engine bay, and the other one it was against the edge of the header shield (where the 2 halves are pinched together). I used the small "service wrenches" from Harbor Freight. They're very thin and have very short handles. I used a pipe over the handle of the main one (I think I had to flatten the pipe a little to get it to fit). Even then they were among the toughest nuts to break loose I've ever seen. Definitely took both hands, lying on my back.
For the ones near the oil cooler itself, there was nothing solid to brace against, and not enough room to use a pipe over each wrench. So I put the 2 wrenches on at a small angle to each other, then squeezed them together with the biggest channel lock pliers I could find. That took a few tries too because it kept slipping and everything would fall apart, but it eventually worked. The 5th fitting, which joins one of the rubber lines to the metal line I think - I never got that off. The guy in the hydraulics shop I brought them to did it, and he said it a tough one.
For the ones near the oil cooler itself, there was nothing solid to brace against, and not enough room to use a pipe over each wrench. So I put the 2 wrenches on at a small angle to each other, then squeezed them together with the biggest channel lock pliers I could find. That took a few tries too because it kept slipping and everything would fall apart, but it eventually worked. The 5th fitting, which joins one of the rubber lines to the metal line I think - I never got that off. The guy in the hydraulics shop I brought them to did it, and he said it a tough one.
I'll have to do the 5th fitting as you call it too. Hope mine is a little easier!
#20
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I think that last one will be easy once you have the line off *if* you have a vice. I don't, but I think that's how the guy at the shop was able to do it. Once you have it held solidly in place, if the worst comes to the worst, you can just hammer on the wrench with a big old lump of wood. That will do it. For the others, there just isn't room under the car for that.
#21
Three Wheelin'
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Oh and I should add...you might be better off with these:
http://www.ebay.com/itm/Oil-Line-Wre...533888&vxp=mtr
They have way longer handles than the HF ones I used. That might have made it a lot easier.
http://www.ebay.com/itm/Oil-Line-Wre...533888&vxp=mtr
They have way longer handles than the HF ones I used. That might have made it a lot easier.
#22
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Much respect to you divil.
In thinking back, I had poor tools and limited time -- a bad combination. I'd like to look into your suggestion of tools.
In thinking back, I had poor tools and limited time -- a bad combination. I'd like to look into your suggestion of tools.
#24
Instructor
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Whatever you choose to use please don't use the push fit hose fittings as shown in Post #11 - https://rennlist.com/forums/924-931-...l#post12686346
I did the exact same and they lasted two miles before the combination of the oil pressure and heat blew them off of the fitting, I managed to replace one of the hoses with a genuine one from Porsche and new connector pieces.
I did the exact same and they lasted two miles before the combination of the oil pressure and heat blew them off of the fitting, I managed to replace one of the hoses with a genuine one from Porsche and new connector pieces.
#25
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Whatever you choose to use please don't use the push fit hose fittings as shown in Post #11 - https://rennlist.com/forums/924-931-...l#post12686346
I did the exact same and they lasted two miles before the combination of the oil pressure and heat blew them off of the fitting, I managed to replace one of the hoses with a genuine one from Porsche and new connector pieces.
I did the exact same and they lasted two miles before the combination of the oil pressure and heat blew them off of the fitting, I managed to replace one of the hoses with a genuine one from Porsche and new connector pieces.
#26
Instructor
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Anyway people are able to make their own choice but a failure of this hose could be catastrophic and ending with a very expensive engine rebuild.
Attachment 1337089
Attachment 1337090
Last edited by dlknight; 07-04-2022 at 01:13 PM.
#27
Rennlist Member
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I have a 951 oil cooler and hose setup, pressure tested, and available if anyone needs it.
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dlknight (07-06-2022)