22 votes
For using an electric water pump: (Granted this thread isn't just for 1.8ts) if using the A) 058 1.8t, uses an external v-belt/serp belt waterpump, for ~$60 you could get this 12v pump and be golden
I've been tracking my E36 for many years with the more affordable Bosch pump and the only problem I had was the main o-ring seal flattening and seeping. They're so cheap that you could buy multiple of them and still spend less than the Stewart pump. Never had an issue with coolant temps, even when doing 20-30 minute sessions on the track all day at WOT.
New thermostat, 80°C so the water will circulate throw the radiator well before its over 92°C, that made the coolant temp much smoother, never goes over 92 now, and never lower than 87°C. Adding a new water pump also helped, just to be safe.
replaced it with a Bosch water pump and that thing is still going strong. Great warranty, too
Use the bosch cobra pump, the crap that comes with those \"kits\" is junk. Those are a boat bilge pump. The cobra pump is $80 on Summit. I used a Mezzier pump that cost $200, it didn't flow much more than the cobra pump and failed just as quickly. The kit's pump only lasted me maybe 3 months.
I ran one on my 1.8t 3076R befor it got broken into and stolen last week. System went. Ice box, above IC core height wise, bottom port on box went to the bosh pump, into intercooler, out of intercooler into heat exchanger in the front, out of exchanger then back to the tank. Logged IC temps and they were rock steady. no problems at all with it.
I just bought a Bosch waterpump, and a crappy Autozone alternator, BUT it has a lifetime warranty, so I'm not too worried.
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The brand is registered in Germany.
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