wreckit87
Feature Winner
I'm here to get smashed and bang in public
Posts: 1,023
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Post by wreckit87 on May 13, 2014 21:52:21 GMT -5
Ok, I know this has been discussed before but I was unable to find a direct answer... Last weekend after a pile of beers, a couple buddies and I got arguing over how much heat an engine can take, blah blah blah.. I've never really found a great way to keep cool, but I've never had a SBF get super hot on me either. One of the buddies and myself have identical 302's, both built at the same time to the same specs. We've got a derby on Saturday and bet each other's entry fees on who gets furthest. I'm gonna dry block, and other dude is gonna loop his hoses. My question is: in your guys' experience, is looping better than dry blocking? After sobriety happened, I'm starting to second guess my decision.. Hot water seems better than no water, but then again 50 degree air seems better than 250* water.. (it's still cold in MN). What do you think?
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imnumber19
Feature Winner
ALL TIME DERBY KING!!!!
Posts: 4,304
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Post by imnumber19 on May 13, 2014 21:56:45 GMT -5
Too bad you can't tag someone in a post... I'll say his name and I bet he'll respond soon or as I'm typing.. Lenny! Aka Jugulator!!
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n8
Feature Winner
Posts: 1,147
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Post by n8 on May 13, 2014 22:06:58 GMT -5
I ran my 302 both ways. I ran for much longer with looped hoses than I ran dry blocked. Probably 3-4 minutes more.
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Post by jackedup on May 13, 2014 22:20:16 GMT -5
I'd say the looped hose will go longer but there is a way you could easily win this. Oil Cooler in an ice box. You hardly need coolant if your running ice cold oil over your motor. Just a thought.
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Post by setenney on May 13, 2014 23:12:12 GMT -5
Ive tried the looped hoses with no rad entering into a feature and it erupted like a damn geyser not even 5 mins into the feature. Not sure if it was to much water or wth happened. Lol
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Post by aoldfart on May 14, 2014 2:59:52 GMT -5
For the looped hoses, you need a pressure outlet. I believe Moroso makes one that lets you connect the hoses, with a radaitor cap on/in it. Or, if you can find one, try using a hypodermic needle stuck into a hose, and taped/wire tied down. I tried that once, with one of my Wife's diabetic ones. But try and find a bigger size if you can. Maybe someting for animals?
Steve
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Post by derbynews583 on May 14, 2014 6:56:12 GMT -5
Better question is why do you want to run without a radiator?
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Post by STROMI 121 on May 14, 2014 7:47:33 GMT -5
I have never dryblocked but from what I understand you will need to remove all the freeze plugs and pump air through the engine instead of water for it to work properly. IDK?
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tk3
Future Icon
Posts: 37
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Post by tk3 on May 14, 2014 7:48:22 GMT -5
If ya are gonna dry block it, I would take the water pump off and knock all of the freeze out plugs out of it to let it breath.
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Post by Adelman88 on May 14, 2014 8:17:56 GMT -5
Definitely take freeze plugs out if your gonna try the dry block idea
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Post by STROMI 121 on May 14, 2014 8:18:21 GMT -5
Someone on here a while back was talking about using a modified smog pump or something to pump air. IDK?
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wreckit87
Feature Winner
I'm here to get smashed and bang in public
Posts: 1,023
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Post by wreckit87 on May 14, 2014 9:20:47 GMT -5
Hmmmmm.... looks like I'm paying for 2 entry fees lol. It's more or less a test to see what kind of abuse they'll take. Thanks for all the responses guys
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Post by Killerclown123 on May 14, 2014 9:38:54 GMT -5
I believe you'll be paying too. Water is excellent to transfer heat so u want it as long as possible. Then when all your water is gone then you have to dry block. Lol. There are tons if ways to keep these cool. But what's really needed. I run a fair show. Do I really need a $150 alum rad? That'll get ruined in one shot. The heats last 10 mins looped works very well but had to engineer to last. With either way, looped being the best IMO, don't have to worry about rad getting busted.
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Post by gmwagon on May 14, 2014 10:14:48 GMT -5
Small fair Derby I wouldn't be worried lots of other things can take you or him out
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Post by pasterofmuppets on May 14, 2014 16:53:04 GMT -5
Someone on here a while back was talking about using a modified smog pump or something to pump air. IDK? It was a modified weed eater motor. Lol In all seriousness, dry blocking is a science (I do it quite a bit on trashed cars I cant fit a radiator into to get one last show out of like a benefit show for a church or some kid with cancer or whatever). I have a 73 olds 350 set up just for dry blocking. No freeze plugs, no water pump, ice box style oil cooler, twin electric fans where the radradiator would be with flow reversed to blow air out of the engine compartment, and ceramic coated heads to dissipate heat (that was an experiment and it actually worked). We also ice bath the engine after the heat. Some places will let the loader push you on the track before you ever start her up, adds run time and saves on heat. Most consistentlyI get around 18-21 minutes out of the engine before initial vapor lock. With a minimum of 16 and a maximum best of 28 minutes. Just lay the wood and time won't be an issue.
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