LT1/LT4 Tech 1993-1997

Overheating got my stumped

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  #11  
Old 01-13-2011, 05:19 PM
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timing chain is most likely fine. lt1 has a good stock chain. never heard of one jumping a tooth. water pumps are good to, the only thing they do when they go bad is leak a bit off coolant. still pump. never heard of a lt1 water pump not pumping. how does everything look? any crudd in there? did you clean and dry the opti right away? i would certainly change the opti if i had a new water pump and had it apart, thats of coarse if the opti is old. new plug wires would be easier to install now as well.
 
  #12  
Old 01-13-2011, 05:19 PM
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Also I was under the impression their would be two o-rings...one on the pump shaft and on on the shaft coming from the block. When I took the coupling off I only had the o-ring on the pump. Problem?
 
  #13  
Old 01-13-2011, 05:21 PM
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check inside the coupler.
 
  #14  
Old 01-13-2011, 05:39 PM
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Not sure how old the opti is. I just bought the car last week with 70k miles. I think I will go ahead and change it...even though that's more money.
Yeah well I was WOT when I heard a screeching from the engine...after that I couldn't get any coolant to flow through the system. All signs point to a messed up water pump. Unless there's somthing else?!
 
  #15  
Old 01-13-2011, 05:55 PM
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It wasn't too bad but there was some oil built up on the top of the water pump and even some signs of it on the drive shaft
 
  #16  
Old 01-13-2011, 08:30 PM
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screeching at wot is usually a belt or belt tensioner. your using a new thermostat right?
 
  #17  
Old 01-14-2011, 08:35 AM
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Yeah. I kinda decided while its apart to just change everything I'm uncertain about.
Got a new timing chain, waterpump, thermostat, radiator, radiator cap, MSD Opti spark, spark plugs and spark plug wires, drive belt, an belt tensioner.

Well....I hope that fixes the problem. Lol
 
  #18  
Old 01-14-2011, 09:23 AM
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Did you light some 20's on fire for fun as well...lol...sounds like she is already eating holes in your pockets.
 
  #19  
Old 01-14-2011, 10:05 AM
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well good news is that msd optispark is great and the entire side of our motor is gunna be like brand new so you wont have to worry too much i would say its easier just to replace when buying used just to put mind at easy then to just hope everything is ok
 
  #20  
Old 01-14-2011, 10:40 AM
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you realize that you will have to drop the front of the oil pan to get the front cover off. been there done that.
 


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