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Project BMW E36 M3 Cooling System - Cool Running

Stewart Components Water Pump
Stewart Components water pump,... 
   
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Stewart Components Water Pump
Stewart Components water pump, silicone houses and 80C thermostat from Bimmerworld. If your E36 came with a plastic thermostat housing, it's also recommended you replace it with an aluminum one (far right)
Stock And Stewart Water Pumps Comparison
The Stewart water pump (bottom)... 
   
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Stock And Stewart Water Pumps Comparison
The Stewart water pump (bottom) is beefier than stock parts (top) that use aluminum or plastic impeller, rather than a stainless steel one. The Stewart part is more durable and increases flow 15%
Radiator Cover Screws Removal
We went to MKC Performance... 
   
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Radiator Cover Screws Removal
We went to MKC Performance for our install and testing. To remove the water pump, first take out the four radiator cover screws then remove it
BMW E36 M3 Clutch Fan
Remove the clutch fan with... 
   
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BMW E36 M3 Clutch Fan
Remove the clutch fan with a 32mm wrench. We did it the old fashion way and gave it a good whack to the right (it's reverse-threaded)
Upper Radiator Pipe Removal
Spin the fan to the right... 
   
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Upper Radiator Pipe Removal
Spin the fan to the right (yes, righty) until it comes loose. Carefully pull it out. Removing the upper radiator pipe prior to this will make things easier, but it's optional
Tensioner Pulley Cover Pryed Off
Pry off the tensioner pulley... 
   
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Tensioner Pulley Cover Pryed Off
Pry off the tensioner pulley cover (next to the alternator) with a screwdriver
BMW E36 M3 Accessory Belt
Take a 4mm allen head and... 
   
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BMW E36 M3 Accessory Belt
Take a 4mm allen head and crank it about a quarter-turn to the right. This will loosen the accessory belt, allowing you to remove the water pump pulley. Notice how the serpentine belt goes back on before loosening it
Water Pump Pulley Removal
The water pump pulley is the... 
   
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Water Pump Pulley Removal
The water pump pulley is the large pulley. It sits just underneath the thermostat housing. Undo the four 10mm bolts that secure it, and remove the pulley - a few light taps may be necessary
Water Pump Secured Behind Pulley
Behind the pulley, the factory... 
   
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Water Pump Secured Behind Pulley
Behind the pulley, the factory water pump is secured with four more 10mm bolts. Remove them and pull out the pump. Simply replace it with the new Stewart unit and refit the parts in reverse order

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Mercedes Benz CL Research
Mercedes Benz CL Get updated on all your car buying needs from safety features, to specs, to crash test ratings and options. Get all the information you need if you are interested in buying a new car like the Mercedes Benz CL. Compare the CL with other submodels and find all you need for your car buying needs. It has a 8 star frontal impact rating for the driver and a 8 star frontal impact rating for the passenger. Other similar vehicles are the Porsche Boxster and the Audi TT.

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