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Old 04-24-2010, 12:40 AM   #1
1996 328ti
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Default Blew my water pump today

I turn the corner and I hear rattling.
I look to the left and right to see what car is making all that noise.
No car to the left or right to me.
I pull over in a left turn lane, turn off the car.
Walk to the back to see if my muffler was dragging, or worse.
Nope, antifreeze.
I doubt I drove more than 20 feet when I turned off the motor.

I actually look at this as being good.
The pump had +240000 miles on it.
It blew when the car was relatively cold.
Decided to let loose when I was driving less than 20 mph.
Broke down in a good location.
The weather was nice and I wasn't going anywhere important.
And the best thing, it didn't happen at the track.

Now it's time for a Stewart water pump.
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Old 04-24-2010, 12:42 AM   #2
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well at least the pump was considerate about it's breaking
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Old 04-24-2010, 12:47 AM   #3
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well at least the pump was considerate about it's breaking
+1
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Old 04-24-2010, 12:51 AM   #4
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well at least the pump was considerate about it's breaking
Good timing.
Need to call Bimmerworld on Monday.
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Old 04-24-2010, 01:06 AM   #5
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Lol Steven. Water pump failure = good news Talk about seeing the glass half full. I'm the same way though. There's a bunch of stuff that I'd like to upgrade/replace, but can't justify it until the old one breaks. Glad the circumstances were in your favor and it didn't leave you stranded or ruin a track day. These water pumps can be a real PITA to remove, they often break when using the extraction bolt holes. Your best bet is to use a big pair of channel lock pliers gripping and twisting right to left while slowly working it out. Watch out for the radiator when it finally does decide to pop out and try to avoid hammering or prying against the timing cover/aluminum head.
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Old 04-24-2010, 01:29 AM   #6
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Lol Steven. Water pump failure = good news
If it was an M44, I'd probably tackle it since there is more room under the hood. I'm giving this one to my local shop.
Funny though, I was on my way to a local muffler shop to see if they will install a new exhaust on the ti.

I just got a set of Bilsteins and H&R Sport springs for my E30 which are scheduled to be installed on Wed at the same shop my ti was towed to.

If I plan this right, I'll be able to drop off the E30 and pick up the ti at the same time.

It really is good news because I fear every time at the track, is this the weekend for the pump to fail? I already have an aluminum radiator.
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Old 04-24-2010, 01:50 AM   #7
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Steve, do you have a spall fan aswell?
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Old 04-24-2010, 02:31 AM   #8
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Steve, do you have a spall fan aswell?
No. Just the stock fans.
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Old 04-24-2010, 08:06 AM   #9
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Nice timing! Reminds me of when the cam shaft broke on my Honda. I was on the interstate and when it broke. However as I coasted over to the side of the road, I looked in the rear view mirror and noticed an emergency service truck right behind me. He quickly diagnosed it as something he couldn't do anything about and called a tow truck.

Coincidentally, I was also on the way to have something else done to the car. LOL
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Old 04-24-2010, 10:39 AM   #10
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You waited 240K to change your water pump? ON a BMW? That's just crazy talk! I try to do that stuff BEFORE it fails. Because if it was me, it would be at the worst possible time, in the worst possible place. You do have some mad luck with you to have it all work out!
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Old 04-24-2010, 11:38 AM   #11
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Glad everything's working out, BUT ... you may not want to go around telling people "I blew my water pump". I couldn't help but think "That's a good way to burn your lips". And if any of you DO decide to blow your water pump, remember that many coolants are toxic.
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Old 04-25-2010, 07:06 PM   #12
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lol ^^^

So while attempting to replace a number of parts (thermostat, water pump, plastic coolant lines that broke) my water pump is giving me a lot of trouble.

Bentley says to thread two 6mm bolts into the threaded holes and the bolts will push the pump out evenly. Sadly enough, the flange of the water pump with the threaded holes was so brittle it snapped off on each side....under very little torque. not to mention a bolt head sheared off and now I have half a bolt stuck in my engine block.

So...does anyone have any clue how to remove a water pump without using the threaded hole method? If i can get the water pump out, there will be enough of the bolt sticking out that I should be able to get vice grips to get the broken bolt out...
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Old 04-25-2010, 08:56 PM   #13
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Quote:
Originally Posted by robcarync View Post
lol ^^^

So while attempting to replace a number of parts (thermostat, water pump, plastic coolant lines that broke) my water pump is giving me a lot of trouble.

Bentley says to thread two 6mm bolts into the threaded holes and the bolts will push the pump out evenly. Sadly enough, the flange of the water pump with the threaded holes was so brittle it snapped off on each side....under very little torque. not to mention a bolt head sheared off and now I have half a bolt stuck in my engine block.

So...does anyone have any clue how to remove a water pump without using the threaded hole method? If i can get the water pump out, there will be enough of the bolt sticking out that I should be able to get vice grips to get the broken bolt out...
What I did was used a huge pair of channel locks to move it around and then I put a claw hammer on a board and pried, it took a while, but, it eventually came out.
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Old 04-25-2010, 10:30 PM   #14
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I would strongly recommend against using a hammer or any method that involves prying or striking the water pump and or timing cover. The extraction holes almost never work and usually result in breaking the water pump housing. It's old fatigued aluminum, same stuff the timing cover and head is made of. I always recommend the channel lock method. Just grip the water pump firmly with the channel lock pliers, then gently rotate it side to side while slowly working it out of the engine. Be careful not to slam it into the radiator when it finally frees itself and remember to properly bleed the cooling sytem once the new one is installed.
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Old 04-25-2010, 10:43 PM   #15
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It really is good news because I fear every time at the track, is this the weekend for the pump to fail? I already have an aluminum radiator.
What type of aluminum radiator do you have?
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