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Thread: Waterpump replacement.

  1. #11
    Join Date
    Dec 2006
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    Florida, Orlando
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    I finished up the truck today. I started to add coolant to the system. I checked under a truck and saw a trickle of coolant coming off the back of the motor were the tranny meets the engine and another leak at the front of engine from under the crank pulley. I checked the top of the motor and the crossover housing on the passenger side is cracked were it mates to the motor. SMH. I torqued the damn thing to tight. Now I have to find another crossover housing now. I torqued the bolts to the same foot pounds as the Intake manifold.
    1995 chevy c1500, 6.5LTD 2wd, PMD relocator, SS Diesel Supply 4 inch exhuast, FS2500 Oil Bypass, & S&B Air Intake.

  2. #12
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    I found a used Coolant crossover housing on Walts site. Whew. Now when I install the crossover what is the torque specs for the bolts. The one I broke was torqued to 31 foot pounds.
    1995 chevy c1500, 6.5LTD 2wd, PMD relocator, SS Diesel Supply 4 inch exhuast, FS2500 Oil Bypass, & S&B Air Intake.

  3. #13
    Join Date
    Feb 2007
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    Baja California Sur Mexico
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    Good to find a used one. Sounds like the crossover had a fault, or something under it. For 50 years I have hand tightened all bolts except head and bearings, without using a torque wrench, so have no torque spec. All done by feel, and better a bit loose than too tight.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  4. #14
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    Dec 2006
    Location
    Florida, Orlando
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    I received the coolant crossover yesterday. While taking of the old crossover noticed the coolant was not even coming from the crack in the crossover. It was just pouring past the gaskets and running down the engine valley. When I installed the old crossover I used Felpro gaskets. I did not add any gasket sealer to it. I will use some gasket sealer on the new crossover. When I took off the old gasket the first time there was barely any gasket material to remove so I figured I would just use the Felpro gaskets by itself. Also fitting on the bottom of my crossover is seized on tight so I just ordered the brass one off Walt's site. Save me the hassle of fighting that thing.
    1995 chevy c1500, 6.5LTD 2wd, PMD relocator, SS Diesel Supply 4 inch exhuast, FS2500 Oil Bypass, & S&B Air Intake.

  5. #15
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    Feb 2007
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    Good idea, new part. I use silicone on one side of the cross over gasket, the V is a strange set up to get a seal.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  6. #16
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    Dec 2006
    Location
    Florida, Orlando
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    Got everything on. filled it with more coolant. No leaks. Crank up truck. Fuel sprouts from t valve. Looks like hose right under t valve has a crack in it. SMH.
    1995 chevy c1500, 6.5LTD 2wd, PMD relocator, SS Diesel Supply 4 inch exhuast, FS2500 Oil Bypass, & S&B Air Intake.

  7. #17
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    Feb 2007
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    It may split again if you cut and reconnect.You may have to disconnect the filter unit and battle with putting a new hose on the bottom.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  8. #18
    Join Date
    Dec 2006
    Location
    Florida, Orlando
    Posts
    489

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    Replaced the whole hose. The T-Valve was a B!tch to put back in the new hose.
    1995 chevy c1500, 6.5LTD 2wd, PMD relocator, SS Diesel Supply 4 inch exhuast, FS2500 Oil Bypass, & S&B Air Intake.

  9. #19
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    Dec 2006
    Location
    Florida, Orlando
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    My temp gauge is still rising. When I filled the coolant up in my truck I opened the bleed screw and filled the recovery tank till coolant came out. Then I closed the bleed screw up. I filled the tank to the top( I think I should have filled it to the full line instead). Ran the truck and the coolant level dropped a little. As the truck ran(with the coolant recovery tank cap off) coolant started to raise up and come out of the vent hose(coolant tank also burped a few times releasing air). I let the truck run until it got warm. Temp gauge went up to 210 degrees. I shut the truck off and coolant still was at top of pressure tank. When I release bleed screw coolant dropped down some in pressure tank.
    1995 chevy c1500, 6.5LTD 2wd, PMD relocator, SS Diesel Supply 4 inch exhuast, FS2500 Oil Bypass, & S&B Air Intake.

  10. #20
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    Feb 2007
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    Doesn't sound good. Did air come out of the bleed? I squeeze the top radiator hose to get the air out. If the problem continues, pull the cross over off and start the engine. Look for air coming out of the heads. Air coming out is cracked head, blown head gasket, or in my case, cracked block.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

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