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Ed, great to see other guys doing their own work!!! That return line is the numero uno for coolant leaks! It usually begins as a small leak via the plastic elbow. I believe some movement occurs at that rubber part, it will rupture! The drivers side return line is secured and rarely fails. Replace both of them. Hopefully you purchased the sharkwerks elbows. You are going to need a special glue sealer for the mating of that housing assembly to engine block. If you do not use this glue as outlined in the WM, YOU WILL HAVE VACUUM codes etc.
The coolant leaks coming from the turbos. There are rubber hoses on the ends would suggest replacing those lines as well. They are not cheap but I have seen those thing ends fail and you can not get to them with the engine in
The coolant leaks coming from the turbos. There are rubber hoses on the ends would suggest replacing those lines as well. They are not cheap but I have seen those thing ends fail and you can not get to them with the engine in
Whew... well having the engine sitting in front of me helped. I "think" I have everything correct. I was wondering about the metal/rubber combo pipes (as well as some of the pipes designated as breather or suction). I did add 997 106 076 74 and 997 106 075 74 to the list (showed about $60 for each). Hopefully they are the correct part. I need to go back over the WM to see what says (replace) when I reinstall. There are also those large hoses that connect the metal pipes with spring clamps and a couple of other easily accessible hoses that I may wait on, but unless I hear someone say, "that will never fail" I am going to order everything. There are a couple of breather hoses I may not deal with and I still have to go over the vac system to see what might be suspect there or worth replacing while the engine is out. Overall everything looked pretty good for an 11 year old.
Here is the list in a spreadsheet. I am sure I will have additions (the total already gave me some sticker shock) and I still need to call my Porsche buddies tomorrow to get the rest of it in. I will be travelling before they all get here so I will start doing some of the work last week of June. I apologize for the delay, but once it all gets here I will be moving through the repairs as quickly as I can.
I was taken aback by all the little bits and pieces, but I have to trust my German engineering friends!
Whew... well having the engine sitting in front of me helped. I "think" I have everything correct. I was wondering about the metal/rubber combo pipes (as well as some of the pipes designated as breather or suction). I did add 997 106 076 74 and 997 106 075 74 to the list (showed about $60 for each). Hopefully they are the correct part. I need to go back over the WM to see what says (replace) when I reinstall. There are also those large hoses that connect the metal pipes with spring clamps and a couple of other easily accessible hoses that I may wait on, but unless I hear someone say, "that will never fail" I am going to order everything. There are a couple of breather hoses I may not deal with and I still have to go over the vac system to see what might be suspect there or worth replacing while the engine is out. Overall everything looked pretty good for an 11 year old.
Here is the list in a spreadsheet. I am sure I will have additions (the total already gave me some sticker shock) and I still need to call my Porsche buddies tomorrow to get the rest of it in. I will be travelling before they all get here so I will start doing some of the work last week of June. I apologize for the delay, but once it all gets here I will be moving through the repairs as quickly as I can.
I was taken aback by all the little bits and pieces, but I have to trust my German engineering friends!
Whew... well having the engine sitting in front of me helped. I "think" I have everything correct. I was wondering about the metal/rubber combo pipes (as well as some of the pipes designated as breather or suction). I did add 997 106 076 74 and 997 106 075 74 to the list (showed about $60 for each). Hopefully they are the correct part. I need to go back over the WM to see what says (replace) when I reinstall. There are also those large hoses that connect the metal pipes with spring clamps and a couple of other easily accessible hoses that I may wait on, but unless I hear someone say, "that will never fail" I am going to order everything. There are a couple of breather hoses I may not deal with and I still have to go over the vac system to see what might be suspect there or worth replacing while the engine is out. Overall everything looked pretty good for an 11 year old.
Here is the list in a spreadsheet. I am sure I will have additions (the total already gave me some sticker shock) and I still need to call my Porsche buddies tomorrow to get the rest of it in. I will be travelling before they all get here so I will start doing some of the work last week of June. I apologize for the delay, but once it all gets here I will be moving through the repairs as quickly as I can.
I was taken aback by all the little bits and pieces, but I have to trust my German engineering friends!
OK, all parts are ordered. There may be one hose I missed (a return line on the back of the oil coolers base plate) but I am sure there will be others I run into. I wanted to update this now so the older version gets tossed by you guys.I renamed it just in case.
I probably won't have any updates until around the 26th, so talk to you then (I need a break anyway after that frikkin' research assault - why are there a few versions of the KAT out there? I really need to look closely at the various PDF's I have and find out why)
These are the lines and other hard to reach with the engine in parts I replaced:
99610721771 Oil Filter Base Gasket
99970740941 O-RING x8
99311325851 Air Injection Shut Off Valve Gasket
99710637473 WATER HOSE
99970178940 Rubber O-Ring
99710632872 COOLANT HOSE
99970744640 Rubber O-Ring x2
99710664974 T-FITTING. SUPPLY.T
99762025101 WATER PUMP
99710607673 COOLANT LINE RET
99710607574 COOLANT LINE RET
99610651274 WATER HOSE
99610652973 Coolant Hose
99710647772 Coolant Supply Hose
99710625072 HOSE. WATER PUMP
99710643200 HEATER HOSE. SUPPLY.
99710623372 WATER HOSE
99610642279 RETURN HOSE
99710632972 MOLDED HOSE
99610680103 O-RING x2
99711074770 Intake distributor gasket x6
99970736441 Sealing Ring
99970741040 O-Ring x2
99970741140 O-Ring x4
99610621470 Protective Ring x2
99951255400 HOSE SCREW CLAMP
99710604972 AS VENT LINE
99951265109 HOSE CLAMP x2
99970742241 O-Ring
99970742641 O-RING
99970711341 O-RING x2
99710603972 AS WATER NECK
I spent over $4.5k in parts in 2016. Once you fix the rear, the coolant begins to leak( mist ) from the front of the car. Don’t believe me? Next time you drive, take a sniff of the front wheels area. Hated that so bad it’s an unforgettable smell. Most call it the front radiator syndrome. It’s not the radiators. It’s all the “O” rings used throughout the front end. They don’t sell them separately. You will end up buying the hoses. Front bumper removal will be required. Replace them all! All day job but fun.
Knock on wood no coolant smell from rear! Front, yes and the O ring fix did it!! We got under and squeezed the lower hose drivers side and coolant gushed out. New O ring on end of hose fixed the problem. atcb5’s theory is they flatten with age. I agree and it’ll happen on the Passenger side too!
I did find some from WD Express, but they were $16 so I might as well buy the hoses themselves. This is the list I have. If anyone has anything to add let me know. Once I get the order in (and wait a couple of days for more comments) I will update the spreadsheet.
99710663502 Water Return Line (Front Radiator)
99710663201 Water Supply Hose (Front Radiator)
99710663502 Water Return Line (Passenger Radiator)
99710663101 Water Supply Hose (Passenger Radiator)
99710672803 Water Return Line (Driver Side)
99710662403 Water Return Line (Passenger Side)
99610680102 O Ring
Radiator breathers! The “O” rings get flat and it will mist not leak. You get that wonderful 997.1 Turbo TTB coolant smell.
Mine coolant smell free since a while. All quiet at the western front. You will need two per side plus the little breather that sits atop of the radiator. That pesky one is a serous culprit and needs to be replaced. Here are the numbers:
Get them quick! ECS is the only place!
Just saved you tons of cash up at that front line!
06-13-2019, 01:14 PM
