So, we start the assembly with the water pump.
Cooling system water pump


My E30 had the entire cooling system installed from the E34. In my opinion, a radiator with a built-in expansion tank looks more aesthetically pleasing under the hood than a separate remote tank with its additional hoses. The early E30 tank, in general, looks somewhat archaic, and I have nowhere to install the late tank, because there is no bracket for its attachment on the body. Yes, there will be another tank there, but I will write about it in turn. So, I leave everything as it was. But there is one caveat - the pump was installed from before the restyling E30 (11 51 9 071 561), so there was no attachment for the metal tube of the cooling system. Therefore, I bought a new pump - already for the E30 restyling (11 51 9 070 758), so that everything was as it should be.
Part #1 - water pump (11 51 9 070 758). I bought an analogue from the manufacturer INA 538016310. The kit included a paper gasket.

Part No. 6 - sealing gasket (11 51 1 722 677). For some reason, I did not like the paper gasket, so I bought a higher quality gasket ELRING 774634
Part No. 10 - bolt M8X20 (07 11 9 903 039) - 3 pcs.
Part No. 11 - elastic washer B8 (07 11 9 932 095) - 3 pcs.
All other individual parts of the pump are no longer available.
For comparison: on the left - the pump before restyling, on the right - after restyling.


The only difference is the presence of a branch for the expansion tank, which I had previously blocked. Now, instead of it, there will be an "ear" for attaching the metal tube of the cooling system.
We wipe the surface of the block, and screw the pump through the gasket with three bolts.

The pump is installed.

Next, we install the thermostat housing with temperature sensors.
Cooling system thermostat housing


Part #1 - thermostat housing (11 53 1 730 470). I once wrote that there are several types of thermostat housings that differ in the number of holes for sensors, but according to ETK they all have the same number. Amazingly. I replaced the housing, it has two additional holes that are closed with threaded plugs.
Part #2 - M8 nut (11 61 1 713 432) - 2 pcs.
Part No. 3 - elastic washer B8 (07 11 9 932 095) - 2 pcs.
Part No. 4 - sealing gasket (11 53 1 722 692) - 1 pc. The price of the original gasket, in my opinion, is too high, and I did not find any analogues, so I cut it myself.

Part No. 5 - thermostat 80CEL (11 53 1 710 953)
Part No. 6 - ring of round section 60X3.5 (11 53 1 265 084) - 1 pc.
Part No. 7 - cover (11 53 1 265 059)
Part No. 8 - screw for removing air (11 53 1 275 881) - 1 pc.
Part No. 9 - bolt M6X25 (07 11 9 913 589) - 3 pcs.
Part No. 10 - elastic washer B6 (07 11 9 932 099) - 3 pcs.

Part No. 11 - sealing ring A14X18-AL (07 11 9 963 200) - 3 pcs. Aluminum 14mm.
Part No. 12 - temperature sensor 1-POL (12 62 1 710 512) - 1 pc.
Part No. 13 - temperature sensor 2-POL M12X1.5 (13 62 1 709 966) - 1 pc.
Part No. 14 - sealing ring A12X15.5 AL (07 11 9 963 130) - 1 pc. Aluminum 12 mm.
Detail No. 15, No. 16 - not used. Instead of them, 14mm threaded plugs are installed.

We screw in the sensors and plugs, install the thermostat and rubber ring, and assemble the thermostat housing.


We install the thermostat housing on the engine through the gasket. Just in case, I lubricated the gasket with sealant. And here again because of the damned Muscovites, they turned off the light!... I was screwing in the dark.

The thermostat is installed.


Then the belt and tags.























































































































































































































































































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