S4->S5 water pump housing.
#1
S4->S5 water pump housing.
I wanted to know if anyone has changed their S5 housing to an S4 housing on their TII's or N/a's for that matter. Will they bolt up? I really don't like the look of my S5's plastic filler neck and don't want to buy a new plastic because it will get like that eventually. i wanted to use the S4's aluminum housing/neck to eliminate that weak spot. Also a secondary question. Will the S4 N/a water pump housing work with my S5 TII? Since my aftermarket turbo is likely not going to have water cooling I can get around having to cap the fitting on the S5's housing for the stock turbo.
Santiago
Santiago
#2
You are talking about the “Thermostat housing” right?
They are not interchangeable. The S5 housing is 3 bolts and the S4 is 2 bolt.
However, I took a die grinder to my S4 Thermostat housing and was able to make it fit on the S5 water pump. I just moved the mounting holes in a cm or so and only used two of the holes from the S5 pump for mounting. It is slightly off center, but I don’t think that will be a problem because there appears to be sufficient gasket surface area. I have not had the car up to operating temperature for any longer than a few minuets, but I don’t foresee any problems.
The only reason I did it, was because I am using an S4 radiator and needed a filler neck.
It is sort of a ghetto rig, but it works. I can get you pics if you want.
Or do you want to swap the pumps themselves? I believe you have to change the entire front cover for that. In which case you would run into problems with the OMP.
They are not interchangeable. The S5 housing is 3 bolts and the S4 is 2 bolt.
However, I took a die grinder to my S4 Thermostat housing and was able to make it fit on the S5 water pump. I just moved the mounting holes in a cm or so and only used two of the holes from the S5 pump for mounting. It is slightly off center, but I don’t think that will be a problem because there appears to be sufficient gasket surface area. I have not had the car up to operating temperature for any longer than a few minuets, but I don’t foresee any problems.
The only reason I did it, was because I am using an S4 radiator and needed a filler neck.
It is sort of a ghetto rig, but it works. I can get you pics if you want.
Or do you want to swap the pumps themselves? I believe you have to change the entire front cover for that. In which case you would run into problems with the OMP.
Last edited by eyeoutthere; 02-24-04 at 12:56 PM.
#3
There are three parts. The pump which has the impeller on it, the pump housing which the pump bolts to, and the filler/neck which is plastic ont he S5's and on the S4 is aluminum. I want to swap all three parts. I already know that the "neck parts" are not interchangable but I want to know if the whole setup can be swapped.
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