block filling
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Joined: Dec 2003
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From: iowa
Cooling becomes more of an issue, my block is half filled and thats been a problem with mine. It does strengthen the block and make it more rigid. One thing I suggest is filling it before finish honing if not before boring.
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Senior User
Joined: Dec 2005
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that might be a proublem mine is done and running i was gonna pull it down and check the bearings and put a set of gapless rings in it so maybe it wont be a good idea to fill it or would it be ok?
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Joined: Dec 2003
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From: iowa
I suppose it would depend on what type you use, I run hardblok and I don't think it make a lot of difference with that stuff but some of the epoxy based ones do matter. I would rehone it after pouring it though but if your going to use new rings probably should anyway.
I am thinking about using my A460 block for next year and just putting this motor into it until I get the parts for the 572 as I am not sure that it's going to stay cool with the hardblok in it.
I am thinking about using my A460 block for next year and just putting this motor into it until I get the parts for the 572 as I am not sure that it's going to stay cool with the hardblok in it.
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Joined: Nov 2001
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From: Escondido, CA
There was a tech discussion on half filling the block in the summit catalog this month. Hardblok and summit both say it wont hurt cooling any with it half filled. Personally I disagree with that thought process. How can reducing half the volume of liquid in the passages not affect it? Unless your taking into concideration that the top of the cylinder is where the flame is. Can you explain this a little more?
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it kinda sounds like it might not be worht it i know in my truck it depends on the skid i am pulling but most of the time the motor rev's 7000+ rpms for up 20 seconds so maybe just leaving it along and keeping it cool will be a better idea but on the other hand i want the motor to last and not wobble apart
Hotshot
Joined: Dec 2003
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From: iowa
airharley, remember that cooling is not totally water related, they are depending on oil to help keep it cool.
backwoods, if you want to strengthen it a little without having as much cooling issues you could do a short fill to about halfway up the block to the water pump holes. That will give you some rigidity without affecting the cooling nearly as much, also make sure you run a good oil cooler.
backwoods, if you want to strengthen it a little without having as much cooling issues you could do a short fill to about halfway up the block to the water pump holes. That will give you some rigidity without affecting the cooling nearly as much, also make sure you run a good oil cooler.
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Senior User
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i think i will short fill it i can always pull the truck to the weight scale and to the line just to keep it cool so i wount have to run any more than needed
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Joined: Nov 2001
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From: Escondido, CA
You would think working on turbine engines that don't have radiators to keep them cool that point would dawn on me. They use a oil/fuel heat exchanger to cool the oil and preheat the fuel, duh. LOL After reading your post monster, I remember reading an article on oil jets that spray the bottom of the pistons to reduce detonation. That article also mentioned a huge oil cooler being used too.