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No more blown freeze plugs on water pump

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Old Nov 19, 2009 | 09:33 AM
  #16  
Gary@MellonRacing's Avatar
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damm i hope this never happens to me , i just insatlled a brand new pump on my car , and i had it in my hand and could of blocked it , and i didnt ...
Old Nov 19, 2009 | 09:46 AM
  #17  
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From: Coopersburg, PA
Originally Posted by Drifto
There is a TSB for this problem on the 05' so Mitsubishi had it happen enough that they thought is was worthy of a notice to their technicians. The cause of the occurance is purely speculation at this point. Some believe that cylinder pressure gets into the cooling system and others believe it is purely a function of the pump making enough presure to remove the plug. Their have been several here that had theirs pop out and installed a new one with red loctite or JBweld and never had the issue again. What ever the case may be I feel better with it locked in.
In regards to ice in the block, USE correct antifreeze ratio for your climate and this will never be a problem.
What was the fix for the TSB? I feel the same way. I think the pressure being produced by the pump is popping them out. I think that because they are right on the pump they are the weakest link. I haven't heard of anyone holding their freeze plug in ever having a problem ever again. I think it was a great idea.
Old Nov 19, 2009 | 10:50 AM
  #18  
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I freaking HATE that stupid plug, its caused me more problems! Last year it foking blew out on xmas day while giving some of my cousins a ride, blown out while going to a client for work, blah blah blah, old pump new pump I hate it! I would do three, to make sure it didn't get cockeye'd in there like my replacement plug is now (and covered in jbweld).
Old Nov 19, 2009 | 11:14 AM
  #19  
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my pump is installed and brand new , and i dont want to remove now to secure it ... is there a way i can put something on it so i dosent come off ?????
Old Nov 19, 2009 | 11:18 AM
  #20  
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I've had that same plug pop too. If it happens again I may actually do this, thx.
Had no idea there was a TSB for it.

Does anyone know what Mitsubishi did when you bought your car in for this?
Old Nov 19, 2009 | 01:29 PM
  #21  
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yes that was the car in the video. the car hit the wall all the way across the other lane because of it. not sue y it popped out yet but its not because of a headgasket issue....

thank god the driver is ok after the crash...
Old Nov 19, 2009 | 05:29 PM
  #22  
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From: Grand Island, NE
Originally Posted by heel2toe
I dont understand the point to this. Freeze plugs are there for a reason. Would you rather have that blow out or have your block crack? Just my .02
"Freeze plugs" are in the block to plug the holes left in the casting when the block was make so the maker could shake out the sand. Freeze plug is a misnomer.
Old Nov 19, 2009 | 05:40 PM
  #23  
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From: Joliet IL
Originally Posted by TTP Engineering
I don't commonly see that one pop out on the Evo. More commonly is the weep hole. The block also has seven additional freeze plugs so unless you do them all, you are wasting your time.
TTP can you explain more about the weep hole? I think my waterpump is toast, but I also heard about this "weep hole" thanks!
Old Nov 19, 2009 | 05:54 PM
  #24  
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It was my car in that video on you tube..... So after this happened, got the car back to my shop, did a leak down test, and a compression test, and the compression is 135 psi all across the board. I ordered a new OEM water pump a few days ago, just sucks that the damn plug came off at the track, and not earlier in the day while making 30+ pulls on the Dyno!!! Hope it Doesn't happen again!
Old Nov 19, 2009 | 06:04 PM
  #25  
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From: Coopersburg, PA
Originally Posted by AngryEvo8
TTP can you explain more about the weep hole? I think my waterpump is toast, but I also heard about this "weep hole" thanks!
http://www.google.com/imgres?imgurl=...ed=0CCUQ9QEwBg

A weep hole is just where the coolant that leaks out of the water pumps internal seal comes out. When it leaks it shows you that your seal is going bad on the inside of your waterpump and needs to be replaced.
Old Nov 19, 2009 | 06:10 PM
  #26  
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From: Grand Island, NE
Originally Posted by AngryEvo8
TTP can you explain more about the weep hole? I think my waterpump is toast, but I also heard about this "weep hole" thanks!
There's just a hole, actually two of them, one is toward the upper side of the pump which must mean the pump is mounted in another orientation on another engine. This hole allows any coolant that gets past the seal, to dribble out. You can't see the hole without pulling the water pump pulley so it isn't of much diagnostic use. On this pump the hole is half moon shaped.

One time, while doing a timing belt job, I had the pulley and timing cover off and the weep hole was in plain sight. I looked up and saw the antifreeze stains around the weep hole so I knew I needed a new pump.

BTW, the freeze plug in the water pump is probably so the pump can be used on other applications, applications that have a pipe that goes straight out from where the freeze plug is.
Old Nov 19, 2009 | 07:18 PM
  #27  
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wow this is pretty interesting i'll start doing it on all my builds.


Eddie
Old Nov 19, 2009 | 09:06 PM
  #28  
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any one know what glue can be used ?? brand etc...
Old Nov 19, 2009 | 10:05 PM
  #29  
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Originally Posted by gfng
any one know what glue can be used ?? brand etc...
Glue isn't going to do anything for you. You can use JBWeld but even that is very brittle. IMO, if you're blowing these our your car has another underlying issue such as a leaky head gasket pressurizing the cooling system under boost.
Old Nov 20, 2009 | 12:33 AM
  #30  
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^My thoughts exactly Thats why mine blew out atleast.


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