It puked because you said you filled the radiator to the top. You need to leave about an inch inside the radiator for expansion
A 16 lb cap is what I would use, I also would install the thermostat and drill a small hole in the side for bettery flow or use a restrictor plate 1/2 in hole. Add water weter too.
Since I let it drop about an inch and put the puke can on it has not been spitting any more out than when I put the can on, I drove it for about a half hour last night in stop n go traffic and it never got over 180 and there was no more fluid in the puke tank after it cooled than when I left!
I guess GM went off on an old wifes tale when they changed to reversed flow water pumps. They need to know this.
Tell me your theory and I will sure try to understand your statement. I think you spelled completely wrong.
here's a great post , actually this is response to one of your posts in this thread. Yep, fat finger spelling. I'd also be interested in hearing the reasoning behind your theories. There are quite a few posts in this thread alone that have disagreed with reasoning already and I haven't seen any back up of your view.
I agree with you for a while but the cooler the coolant the more heat transfer.The coolant will not leave the radiator at the same temperature the coolant enters the radiator unless you have no air flow through the radiator.
There are reverse rotating water pumps because of the serpentine belts. There are some reverse flow systems but that does not mean the flow is slower. Some of gm cars now have the water pump gear driven. I am pretty sure GM has some reason for reverse coolant flow but that does not mean they slowed the flow. They probably had to please Al Gore or they needed to spend some bail out money (just Kidding). Let me know the reason behind reverse flow coolant. None of my gearhead friends know the reason. It is probably do to head design and emissions.
HAHAHA! Its amazing how every car rolling off an assembly line that has had MILLION$ put into R&D has had a thermostat, which according to Sturgis is only needed because of an "old wives tale".
Reverse flow cooling refers to the flow of coolant thru the block. Standard flow follow the natural convection principal of heat rises. The coolant fresh from the radiator into the lower block first, then rising up thru the heads. By the time the coolant reaches the heads its already pretty warm. In reverse flow, the fresh from the radiator coolant enters the heads first. Then down thru the block and out the bottom. This keeps the heads relatively cooler. Cooler heads keep detonation down. That allows higher compression, more power before detonation. Pontiac had a reverse flow in the early 60s. They had flood tubes to disperse coolant evenly instead of progression from front to back.
the tstat ,even when open is a small controlled orifice and will control forward flow aswell as reversion.The first engine i built in high school was run with out a tstat for a short time.never over heated, but would push water out of the cap when shut off.I have seen this other times aswell.
There is a reason we do not invite him to breakfast anymore. that and the time I was taking the touring in to do a burnout at Sturgis since the local streetrod guys were so lame......as I jumped in the T he asked "what are you doing!" I said " a burnout". He said "What if your break it!?" I said. "I built the fucking thing if I break it I will build it again!" I rest my case your Honor.
Oh, thanks for clearing that up. Now that the corporate conspiracy has been exposed, never again will I purchase a thermostat. Of course that was sarcasm and I was not expecting any reasonable explanation or answer to my previous question because there is none. However it would have been fun to see. Good day sir. On another note, is there an IGGY button feature here on the HAMB ?
Next time you shutdown a warm engine, sit in the car and check the water temperature for a while (maybe 30 minutes) and record the temperature. Plot the temperatures on the Y coordinate and the time on the X coordinate. The time interval for checking the temperature could be every three minutes. Water expands when the temperature increases. When the water does not circulate the temperature increases. Please take a picture of the graph and post it on this thread and I will try to explain what your high school shop teacher did not explain. Do not listen to T-man. I have not seen his car on the road since that day. I think he broke it that day and Gene got tired of always having to fix it for him. I am really hurt because they now have secrete breakfasts. I always bought everybody's breakfast too.
Take a 4 inch black pipe about ten feet long and hook a garden hose on one end and a 1/2 inch valve on the other end. Let the pipe set in the hot sun. Open the 1/2" inch valve a 1/8 to 1/4 turn. Turn on the garden hose and see how long the it takes the pipe to cool. Now let the pipe get hot again and open the discharge valve half open. Now measure the time for the pipe to cool. Now do the same thing again with the discharge valve fully open and measure the time for the pipe to cool. Be sure to let me know the results. The temperature could be measured with a surface thermometer. by feel or with one of the fancy infrared heat reading guns.
A thermo has nothing to do with running cool, warming up a engine or overheating a engine(unless it sticks closed).All it does is control the temperature at which the engine is running.!!In reality a car engine is cooled by air, the water is transfering the engine heat to the radiator which is cooling the water by the air flowing around the fins & then bringing the cooler water back to the engine. If the idea of water spending more time in the radiator to cool off also means it spending more time in the engine heating up!! So what i'm saying is all the water is doing is transferring the heat from the engine block.By running a thermo it doesn't let the engine get too hot in traffic or cool to low at 70mph! I was always told that the hotter that you can run your engine without over heating is were the engine will run the most effeicent! Ya have to remember that the engineers in "Detroit" know alot more about cars & engines then us brain dead hacks!!lol JimV
Wow...im still going to run the t-stat soon! I will report my findings! As far as these test I'm not big on home work!
This example isn't the same as any cooling system that I know of. Nor is it even remotely close to your statement of "the faster the water flows the more heat is removed" . Your example compares a fresh continuous supply to a closed loop. Heat transfer equations include a factor for time. As the time goes down the amour of heat transfer goes down proportionately, the inverse is true also. As time is increased the amount of heat transfer is increased proportionately. Want to use your pipe example ? Create a loop with a pump and add your valve & Find a heat source that can boil 2 gallons in 3 mins and runs around 500 degrees. Run your garden hose for cooling over 1/2 the pipe . Start it up and you let me know how long it takes to boil all of the water. Go as fast as you want. According to your theory it will never boil if you can run it fast enough.
Ok well finally got the thermostat, and didn't change anything after the catch can. It did finally stop puking, after it got to a water level in the radiator that it liked, about an inch and a half from absolutly full. After tweaking in the carb and timing, it was running good at around 180, but after about a 30-40 minute drive as I neared home in town it would start to creap back up over 200-210. So with out changing the fan (because the fan I bought would fit...too big) or adding extra coolant (because I wanted to drive today and NAPA was closed last night). I took it out and ran around town and to cruise in, then took the kids out for a nice long cruise and it never even thought about going over 180 till it was home in the drive way idling for about 10 min. and then it got to nearly 190, and stopped. So for those of you who argued for the thermostat so far it looks like you were correct! Thanks again to all who offered suggestions! I'll try to take it out and streatch her legs a little this weekend and see how it reacts when it 90 degrees outside!
the tstat will keep the water from pushing past the cap so much when turned off.run an over flow.200 ok.
Just my .02. Have you ever ran out of hot water when your daughter had a long shower? There is a point when the amount of heat that is absorbed is reduced by the amount of water flow. Too much water flow will decrease the amount of absorbtion. And vice-a-versa. NO?
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