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For me, it was an old funeral car, early 50s Cadillac Hearse. It ran fine during the procession out to the Burial Park,the other cars could return on the hiway, but this one overheated at speed. When brought to us, we rifled thru the glove box, found the newish looking rad was just a coupla...

Stainless welding rod, or heavy piano wire. (We had a music store down the block.)

The interesting thing about the lower hose sucking shut, - is that as soon as you let the rpms drops from the revs nec to suck it closed, it will immediately open , and stay open till next time revved, then shut. Cruise at 60 mph, it gets hot, pull over, idle, open hood, inspect for problem...

Yeah, I mentioned that in an earlier post, "vacuum" was part of the quote. Cheers

I tried to avoid the use of the word "vacuum", but I maintain low pressure area created by "centrifugal" force, and the terms "single suction, dual suction pumps" seems to support what I was taught, well before the interweb, lol

"Centrifugal pumps work on the simple principle of imparting kinetic energy to the liquid. The pump consists of an impeller that is generally situated on a rotating shaft and turns inside of the pump casing[^1^]. When the impeller rotates, it creates a vacuum, sucking the fluid into the pump...

There was an extreme sense of success and satisfaction I have seldom achieved anytime else, in smashing out the windows as the squatters could only watch, mouths hung open. It was worth every penny for new modern windows .

Water pump uses centrifugal force to create a low pressure area. This is not a positive displacement pump, vanes/flukes are not sealed to the case/housing. No "pressure" as such, is created, only circulation. The lower rad hose, the return heater-hose, and by- pass hose all channel coolant...

Castle Doctrine . Post it .

Power vs longevity. We used to valve grind @ 60 - 80k mi. Re-ring ~100 - 120k mi. Leaded gas, ~180* thermostat. Now we often get 200k with oil changes only. Unleaded fuel, ~ 200* thermostat. No question motor oil and metallurgy has come a long way .

I have had to send rads back, they do make mistakes, and also faulty parts. If you have access to an infra red camera, here some pix Dana shot, showing plugged tubes, and hot water by-passing past the sides of the plugged finned area. See if you can find a way to get a similar picture, You may...

Trust in karma, it'll come back if you gave . Good luck helps too .

Regarding your squatter. I was a landlord for a loooong time. Courts couldn't get em out. power, water had been off for months. Wife and I were watching TV one nite saw story of landlord taking baseball bat and busting out squatters (his) windows. My wife didn't scream long or loud enuff as I...

Some mechanical fans may be less efficient if turned around, but the direction of wind will be the same. Changing direction of rotation will reverse wind/flow.

The slipping impellor deal can be checked by pulling the by-pass hose off the timing cover and slide a tool with a bent end as in pic, you can hook, or jamb the impellor to check if it's secure to the shaft. As mentioned, the rad is shedding enuff, if it were mine, put the cap on, tape over the...

On one of those trips, if you shoot the rad imput/output temps when hot, and we know the new rad is doing its job of shedding 50*ish, then we can eliminate that and try other stuff. If the rad is 180* ish at the top, and 170+*ish out the bottom, that would be a problem. The blow back is kinda...

When hot. Would you pls supply the Temperature from top and bottom rad hose fittings, not the hoses . Where's timing set? - pls don't say "it's good". tia

And a reminder that a major percentage of engines out there, you can't mess with the pulley sizes, space and pulleys are very limited,even when turbos are optional, and heat is extreme. Pump ratios stay the same, other things change .

Who's on first, lol. Hilarious. Watch the vid I posted back at #33, particularly the actions of the thermostat. then read the sign.

My mentor was like that . . .

Some of the engines I work with, you can't change pulleys sizes. No alternate pulleys, no room . With or without the turbo .

If the cooling system has the capacity to shed enuff heat, the thermostat is introduced to slow flow to get the the temp up to the desired running/heater temp.

Folks often forget to flush the heater, or forget to open the "hot valve" while flushing, to blast the crap outta there too .

I forsee a frisbee across your backyard, as many, many have discovered . Good luck

My reference to "modulation/oscillation" is in the context of a gas pedal maintaining a constant speed by slightly adjusting the opening and closing of the throttle on a hilly road - not slamming totally open/close as a HVAC being turned on or off. Hence the vid. Thnx Bill

...as more heat is created in the coolant. Thermostats generally fully open once coolant temp exceeds a few degrees over stat rating. If you have a 180* stat, and engine runs 200, your system has no reserve to "work". Years ago I tried to get overheat issues diagnosed with a heat gun or...

I've often mused how raw water cooled boats (inboards and outboards too) running in various raw water temps from 32* melting glacial lakes, oceans, as some of my boats have been, how they maintain the 140* engine running temps that raw water thermostats run, (to avoid mineral (salt) crystalizing...

We generally upped the thermostat to a 195*, gave warmer air outta heater. Hence the " summer/winter" thermostats I remember as a kid. Cheers

There are misc on/off temps for fan switches. Use them on racecar. Selection here. I use one comes on 200, off 160 ish Good luck...

Check the heater hose clamps are tight, they can send a fine spray in the most unbelievable directions, and thru the firewall .