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Re: Can an AC Installed make the engine run hotter than before?
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Re: Can an AC Installed make the engine run hotter than before?
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I added an aux cooler to my truck like 8 years ago. I've put over 40K miles on my 700R so far. This was just a mock up pic, it's installed on the front cross member: http://67-72chevytrucks.com/vboard/a...1&d=1210897908 |
Re: Can an AC Installed make the engine run hotter than before?
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Re: Can an AC Installed make the engine run hotter than before?
What about those aluminum radiators. I have talked to a few suppliers of them, they all claim about a 15-20% decrease in temperature just by swapping to one. They are expensive and I really don't want to spend that kind of cash if the gains are really small. If it could get me back to 190 degrees, I might would take the plunge for one.
I always look at those claims this way,if they were telling me the truth,they would have no problem backing up their claim with a return policy.Obviously there are a lot of variables but I don't see that much gain from just a materials change. |
Re: Can an AC Installed make the engine run hotter than before?
Read this and it may help you. Some very good reading on cooling systems.:chevy:
http://www.pirate4x4.com/tech/billavista/Cooling/ |
Re: Can an AC Installed make the engine run hotter than before?
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I want to see you install a shroud and clutched fan on this motor! No Room. There is exactly 4.5 inches in front of that serpentine belt at the crank pulley and 3 of that is radiator. This truck has 15,000 miles on it since finished and all of those are in the middle of the Sonoran Desert where there are at least 30 days every year when the temps are over 105. This truck has never overheated. Twin Be Cool Electric fans and a Be Cool Rad rated for 800 horsepower. Does it "need" electric fans? Youbetcherass if you want to run that motor. Is there "something wrong" with this truck? Only if you're the local sheriff and you're trying to catch up to me on these back roads!. |
Re: Can an AC Installed make the engine run hotter than before?
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Other than that, nothing wrong. Well, maybe the gas bills, but some things are worth it. :D |
Re: Can an AC Installed make the engine run hotter than before?
Nice engine
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Re: Can an AC Installed make the engine run hotter than before?
Those air tranny coolers really help? Or should I consider one with a built in fan?
I agree on not seeing that much gain from material change only for the radiator. I already have twin electric fans pulling 4600 cfm. Many an external pusher fan on the condensor or would help? A buddy recommended adding that to see. Flex a lite also said the same thing and said to test it by placing a small house fan in front and see if it changes it. |
Re: Can an AC Installed make the engine run hotter than before?
Where do most people mount those air cooled tranny coolers at?
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Re: Can an AC Installed make the engine run hotter than before?
Mine has been mounted in front of the radiator and behind the condenser for years. I installed it as soon as I installed the 700-R4 and it had over 100,000 on it when pulled out. It's the same way now with the 4L80E installed.
You can't see it but if you look close you can see the hoses sticking up behind the condenser on the passenger side and the keepers that hold it in place.;) http://67-72chevytrucks.com/gallery/...4_cold_air.jpg |
Re: Can an AC Installed make the engine run hotter than before?
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I know lots of guys with LS swaps that use e fans, but most of them use a form of OEM fan, and not an aftermarket one. Again, I mentioned I was burned by aftermarket fans (and have read about many others that were as well) and will use an OEM Chrysler fan on my C10. I was also just burned by a pile of crap "aftermarket" flywheel. I installed a T5 in my 65 mustang and it's vibrating like crazy in N and all gears at the same RPM. Turns out quite a few people had the same problem with that brand. Expensive (and time consuming) lesson learned. Going with an expensive Ford Racing one now (didn't know they offered one for my set up at the time). Nice looking motor! |
Re: Can an AC Installed make the engine run hotter than before?
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Re: Can an AC Installed make the engine run hotter than before?
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That motor will take this truck through the traps at SIR in 11.3 sec. with the AC on! It's a bit faster with it off. |
Re: Can an AC Installed make the engine run hotter than before?
I'm running a 6.0 LS in the 71 now with 2 electric fans with no shroud. The fans themselves have a small flange with them but I want to make a shroud for them to pull more air through the whole radiator. I'm also looking at the new LS radiator by Griffin.;)
http://67-72chevytrucks.com/gallery/.../DSCF04302.JPG http://static.summitracing.com/globa...0013-ls_xl.jpg |
Re: Can an AC Installed make the engine run hotter than before?
That 572 is awesome looking. AWESOME!
At the risk of side tracking my own thread, how much HP you putting out with that beast? |
Re: Can an AC Installed make the engine run hotter than before?
Does anyone know how much temperature drop those air cooled tranny coolers lower it? Some one mentioned installing on the return line from the radiator. Any body recommend a location and provide some additional photos.
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Re: Can an AC Installed make the engine run hotter than before?
Never broke 210 while under load and not moving for an hour?
You're splitting hairs. I wouldnt give it a second thought. |
Re: Can an AC Installed make the engine run hotter than before?
It actually hovered between 210/218 degrees during the torture test. I guess that is still ok? Just not use to seeing that high of a temp on it. I guess that condensor is adding the heat. I put a temp gun on it and it was running 150 degrees on the ac condenser which would increase the incoming air temp by 55-60 degrees vs the ambient outside temp.
I am going to torture test it again soon when I get time, but will add a house box fan to blow into the grill and see if that changes anything. I just hate to spend $500-$600 on a new aluminum radiator for minor improvements........but if it would truly drop the temp 15-20 degrees I would buy one. Does anyone have real world experience with just adding the radiator to the system and seeing that kind of improvement? |
Re: Can an AC Installed make the engine run hotter than before?
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A condenser adds heat a couple ways. 1. It's physically blocking the radiator. Air still pulls through it, but not as easily as it did before the condenser was there. 2. Condensers can get pretty damn hot with the A/C cranked on high. So now, your fan is trying to cool your radiator and it's pulling the hot air through the condenser into the radiator as well, so the system has to work much harder. That is why on any factory set up where A/C is involved, there is almost always a much larger radiator and a larger fan that pulls more air. That's probably not 100% true on modern cars anymore (can you even buy one without A/C?) only because it's cheaper to just put the "max cooling" stuff on everything, rather than have multiple parts for the same car (another reason why crank windows aren't offered anymore, it's actually cheaper to just have ALL cars have power.) Post some pics of your current set up. Did you put the thermostat back in? That should be done before anything else. |
Re: Can an AC Installed make the engine run hotter than before?
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Re: Can an AC Installed make the engine run hotter than before?
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Re: Can an AC Installed make the engine run hotter than before?
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The radiator cooler will not hold it at temp unless it is a very,very cool day. It will cool it off per the differences in each side of the cooler. It will not hold it at coolant temp. Turbo Hydra-Matic 350 Handbook (HP Books), the ideal operating temperature for transmission fluid is between 175 and 225 degrees Fahrenheit. The air cooler will drop his over all temps, by how much not sure. I have never seen a heavy duty truck not have one installed. They will make a radiator run cooler over all. Is it the answer to his problem, I don't know but it want hurt to install one.My 700 r4 had over 100,000 miles on it when I pulled it out for the 6.0 4l80e swap.:chevy: |
Re: Can an AC Installed make the engine run hotter than before?
I have a 165 degree thermostat already installed. Bleed the system of all air long ago. Have a fluid recovery bottle that the level will rise some and drop and equal amount once cooled back down.
Dam fitz, 575 RWHP. That's bad in a good way. Having a vapor lock issue with the fuel system too. Just ordered a holley red electrical pump. Pusher fans on the condenser? What's y'all thoughts on them. Would they help? |
Re: Can an AC Installed make the engine run hotter than before?
Think I'm add a plate type external cooler in addition to the radiator coil for the tranny. The cooler a tranny runs the better., at least that's what I am by the local racers.
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