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From what I understand, the T is part of a hose assembly. The techs usually build a T from brass or some other durable material. My info is a few years old so things may have changed, but you can see the T from under the truck.
Steve, the thin pipe marked '21' can also fail, especially if it wasn't replaced with the coolant tubes. This pipe will empty all of your coolant too. The coolant will ultimately leak from the hole at the base of the bell housing. I recently had this pipe fail.
I was asking about this at my local Porsche Dealer the other week. I live in not too large city in Europe (less than 500k population). I asked the service manager how many times he had seen this happen, and he said that only twice. Once on a 250k kilometres (~160k miles) 957 CS, and once on an 958 CTT (did not recall mileage).
I pulled my '08 Turbo apart to replace the starter. Since I was in there I decided to have a look at the glued-in coolant distributor fitting. It looked good, no leaks. I tugged on the hose and the aluminum fitting came right out of the distributor.
I'm not a fan of gluing these bits (my '05 GT3 has welded fittings) and I don't have a TIG welder so I just ordered the replacement coolant distributor from Sunset Porsche in Oregon. It's not an easy replacement if you have large hands like I do but worth it - the new part has a threaded hose fitting. While in there I replaced all the usual plastic and rubber bits I touched and the thermostat and water pump. Also did the belt and updated tensioner.
I pulled my '08 Turbo apart to replace the starter. Since I was in there I decided to have a look at the glued-in coolant distributor fitting. It looked good, no leaks. I tugged on the hose and the aluminum fitting came right out of the distributor.
I'm not a fan of gluing these bits (my '05 GT3 has welded fittings) and I don't have a TIG welder so I just ordered the replacement coolant distributor from Sunset Porsche in Oregon. It's not an easy replacement if you have large hands like I do but worth it - the new part has a threaded hose fitting. While in there I replaced all the usual plastic and rubber bits I touched and the thermostat and water pump. Also did the belt and updated tensioner.
Thanks Bob
Posting the pn would help everyone on the forum. Any additional parts required...gaskets, fittings etc.?
An earlier post in this thread mentioned the engine was dropped to change out the distributor.
How difficult was this with the intake removed?
I pulled my '08 Turbo apart to replace the starter. Since I was in there I decided to have a look at the glued-in coolant distributor fitting. It looked good, no leaks. I tugged on the hose and the aluminum fitting came right out of the distributor.
I'm not a fan of gluing these bits (my '05 GT3 has welded fittings) and I don't have a TIG welder so I just ordered the replacement coolant distributor from Sunset Porsche in Oregon. It's not an easy replacement if you have large hands like I do but worth it - the new part has a threaded hose fitting. While in there I replaced all the usual plastic and rubber bits I touched and the thermostat and water pump. Also did the belt and updated tensioner.
The new part is 948.106.061.07. You just need the same two gaskets as for the old part: 948.106.154.01. You'll want to replace the o-ring for the hard line that goes to the passenger side of the manifold: 999.701.825.40. I had about 100k on it when the starter started to go weak.
All told I think i spent about $1800 on parts. No sense not replacing something plastic or rubber that is a 3 hour job just to access.
It was a bitch to do without dropping the engine. The high pressure fuel pump had to come off and everything in the valley came out for the starter. Getting to hose clamps took hours of stuffing large hands into small places.
There were some tools that were helpful. Snap-on Torx drivers, regular and stubby, female Torx sockets and wrenches (see pic). A short set of those wrenches would be nice, too.
The new part is 948.106.061.07. You just need the same two gaskets as for the old part: 948.106.154.01. You'll want to replace the o-ring for the hard line that goes to the passenger side of the manifold: 999.701.825.40. I had about 100k on it when the starter started to go weak.
All told I think i spent about $1800 on parts. No sense not replacing something plastic or rubber that is a 3 hour job just to access.
It was a bitch to do without dropping the engine. The high pressure fuel pump had to come off and everything in the valley came out for the starter. Getting to hose clamps took hours of stuffing large hands into small places.
There were some tools that were helpful. Snap-on Torx drivers, regular and stubby, female Torx sockets and wrenches (see pic). A short set of those wrenches would be nice, too.
Thanks for this!
The details are very helpful for the DIY mechanics on this forum.
On and off since summer, I get a whiff of coolant once in a while, and I have in the back of my mind that I may have the water distributor problem, I have 55k on the clock.
I just started getting a check engine light every few days for the coolant temp sensor, implausible signal.
11-08-2015, 11:14 PM
