Kyrie Posted August 16, 2021 Report Share Posted August 16, 2021 This is what my water pump looks like when removed And this is what my block looks like..... There is an indentation that resembles the shape but from my manual it looks like the water pump is supposed to have two holes. I did find this after I removed radiator to find this I'd love to hear all the bad news! Quote Link to comment Share on other sites More sharing options...
wagoneer Posted August 16, 2021 Report Share Posted August 16, 2021 Looks like your cooling system hasn’t been flushed in a loooong time, and possibly was exposed to elements because that loooks like leaves and other junk. You are probably having overheating issues? All your fluid is coming back through that little internal thermostat bypass hole instead of through the thermostat. Take off that top thermostat housing (don’t dig it out just yet). You’ll find underneath the remnants of your thermostat . Clean it up carefully, and see if you clean up any junk you can . same with your radiator - flush water through it until it comes clear . There is also a petcock drain you should open and clear. take like a long metal coat hanger and stick it in the water distribution tube (round D hole) and dig around to loosen up any compacted sediment. now would be a good time to flush your block with low pressure and then increasing pressure to start getting crud out (high pressure may just compact things more). Flush with a hose by putting it in top of head and junk comes out from that WDT. when you are feeling a bit more in depth amd have time, you should probably plan on opening up the bottom two Welch plugs to clear out sediment from your block built up over time, as well as replace your water distribution tube . Doing so will essentially deep clean your block to ensure good water circulation and cooling. see WDT rip and replace see this good video on Welch plug clean out from our fellow forum member @keithb7 1 Quote Link to comment Share on other sites More sharing options...
kencombs Posted August 16, 2021 Report Share Posted August 16, 2021 A little history of the engine would help my assessment. When was it last run? Did it have coolant in it when you started working on it? What Kind? Is this after long storage or??? I don't think the pump has two holes on the block side, just input from the lower hose and out to the distribution tube. What does the inside of the radiator at the top look like? I ask because the stuff in the t-stat housing doesn't look like 'normal' corrosion, chunks are too big for that. BTW, the end of you tube looks much better than expected after seeing that t-stat housing! 1 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted August 16, 2021 Report Share Posted August 16, 2021 That complete cooling system needs very thorough cleaning of corrosion and sediment. The radiator should be checked out for leakage and proper flow. The block needs the lower core plugs removed for complete sediment removal too. The WD tube needs to be pulled out to help flush the block also. Do it all now so no chasing over heating issues later.? 3 Quote Link to comment Share on other sites More sharing options...
Kyrie Posted August 19, 2021 Author Report Share Posted August 19, 2021 Just purchased the truck and was told that it.was "running like a sewing machine" when started and driven 6 years ago. When I removed the radiator, tons of water poured out and when I removed the tubes....whammo rust flakes the size of corn flakes! I vacuumed as much as I could, flushed, soaked vinegar overnight x 2 and flushed again. I haven't even touched the radiator. My engine is a straight 6 251 cu.in. 25" (which means everything is more expensive) and 2 ton (which means can't get parts). I am wondering if anyone can get their hands on the specs for the heads of this motor as I have access to a aluminum CNC mill. Thank you all so much for the replies and videos!!! I had no idea about a welch plug and there was no bad news! Thank you again !!! 1 Quote Link to comment Share on other sites More sharing options...
kencombs Posted August 19, 2021 Report Share Posted August 19, 2021 (edited) It's good that it hasn't been run since parked years ago. Maybe the rust is mostly from the long storage and hasn't yet been circulated into the radiator. First thing I would do is get the radiator out and reverse flush with a garden hose, upside down and hose in the outlet the the pump draws from. You stated water poured out, if it was stored with water only for 6 years I hope you don't have freeze temps in the winter or there may be other issues. The vinegar soak is a good move. I'd keep doing that for longer periods. Removing the core plugs from the block at the lowest points, to flush is a good practice. Once you get it running, repeat the the treatment, the acid will work better when warm. What specs are you looking for on the head? If it is thickness to determine milling amount? If so, it has been my experience that that number is not available as there seems to be a lot of variance and AFAIK, the new spec hasn't been published. Edited August 19, 2021 by kencombs Quote Link to comment Share on other sites More sharing options...
Brent B3B Posted August 19, 2021 Report Share Posted August 19, 2021 Welcome Kyrie, sounds like a cool project. 251 in a two ton COE! Color me a little jealous ? would like to see a photo of the truck. if you decide to have the water pump rebuilt before it goes back in, I’ve had good luck with http://www.autofriction.com up here in my neck of the woods. Brent Quote Link to comment Share on other sites More sharing options...
47 dodge 1.5 ton Posted August 19, 2021 Report Share Posted August 19, 2021 10 hours ago, Kyrie said: Just purchased the truck and was told that it.was "running like a sewing machine" when started and driven 6 years ago. When I removed the radiator, tons of water poured out and when I removed the tubes....whammo rust flakes the size of corn flakes! I vacuumed as much as I could, flushed, soaked vinegar overnight x 2 and flushed again. I haven't even touched the radiator. My engine is a straight 6 251 cu.in. 25" (which means everything is more expensive) and 2 ton (which means can't get parts). I am wondering if anyone can get their hands on the specs for the heads of this motor as I have access to a aluminum CNC mill. Thank you all so much for the replies and videos!!! I had no idea about a welch plug and there was no bad news! Thank you again !!! You noted about possibly milling the head and the milling machine is designed for aluminum. Please be cautious as it may not be be rigid enough to cut cast iron and ruin your head. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted August 19, 2021 Report Share Posted August 19, 2021 (edited) I hope down in the basement it doesn't look like this pic..... This looks same as your thermostat housing.!? Edited August 20, 2021 by Dodgeb4ya 2 1 Quote Link to comment Share on other sites More sharing options...
Brent B3B Posted August 19, 2021 Report Share Posted August 19, 2021 Dang Rob, so glad that is not your basement! I’d go back upstairs, shut off the light and screw the door shut ? 1 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted August 20, 2021 Report Share Posted August 20, 2021 Brent...That is one ugly bottom end. The thermostat pic shown above looks the same as my pic. Glad I've never run into anything as bad as the above two pictures. Both are a real challenge for sure. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.