This will be quick as it was simply a clean and assemble job. In my quest to convert the Mk1 motor to a Mk2 motor, the water pump body needed to be changed. With the Mk2, the intake manifold changed design and now incorporated a water pass-through into the cooling water circuit. The water pump body accomplished this by providing an outlet at the top, under the elbow. A new water pump body was easily obtained via my favorite forum's Buy/Sell/Trade section.
|As it arrived. Pretty good shape, actually.|
|Following some love and attention from a wire wheel.|
|The thermostat elbow prior to cleaning. I left it dull, but got the crud off.|
I got it all cleaned up and then applied my normal two coats of primer and two coats of low-gloss black.
I cleaned up and installed the outlet fitting for the manifold and the inlet fitting for the coolant return pipe. I also installed a new temperature sending unit.
|The coolant outlet fitting and sending unit.|
I cleaned up and reinstalled the water pump studs and used Permatex Thread Sealant with PTFE to prevent any leakage.
|Water pump studs and the thread sealant.|
Following that, a new gasket, sealed with the Gasgacinch gasket sealer.
|Gasket installed. I used Gasgacinch on both sides of the gasket and on the body and water pump itself.|
With the gasket in, the water pump was installed and bolted down. I couldn't find a torque spec so I used the spec from a similar size bolt and settled on about 15 ft-lbs. Of note, here, the water pump has a weep hole on the bottom so you can see if there is leakage around its seals. The weep hole needs to go on the bottom of the assembly.
|The weep hole. This is a new water pump, by the way.|
Next up was to install the thermostat. I bought a new one a while ago and needed to get it out of the old body. There was some mysterious growth there, but it cleaned up just fine!
|Organic, I suppose. Interesting all the same!|