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680OST Regular Registered: August 2004	Re: thoughts on barrel coolers??? Thu, 03 February 2005 22:34 Ok, I get what you are all saying, but thats not the problem, we are not talking about the water temperature rising slowly over time, as would be the case if it did't have enough time to cool in the radiator, or if it was relatively hot in the cooler itself. But, to put it in perspective so you understand its not pump speed, at least that its definately not going to FAST, is that the water temperature surrounding the cooler on one dyno pull, started out at -2 degrees C, and after the pull had only risen to about 10DegC, so no matter how fast the water is moving, it is being replaced by more water that is still BELOW ambient, and inlet temps still rise massively, 40 degrees!! just as fast as when the water temp in the system is 30-40 degrees C, 10degC above ambient. The pump speed could be too slow, I've spoken to Richard from ARE cooling, who I usually buy all my coolers from, he's possibly the most knowledgable person in the industry, and he has tested many differnt facets of W/A coolers. He dropped 7 degrees of inlet temps when he went from 1 davies craig booster pump to 2 on his surf, and he now uses a Davies Craig electric water pump, as used for engine cooling!!!! as the pump, it flows 75 Litres and hour instead of the 22 for the booster pump, and 35 for the bosch pump I have. The area in which I think I may have a problem, is that I am using a mixture of 50% water, 50% ethanol, or methalated spirits. My reason for doing this, is during testing, the lowest temperature I could get water and glycol down to was negative 15DegC, and it took a bloody long time doing so. Ethanol, on the other hand, takes very little time, literally sucking the dry ice up very quickly and absorbing its very cool temperature, and got down to -73degC, which is as low as our equipment would go. I thought this would be a bonus, and in most cases it probably is, with the water temperature always staying very cool under normal driving becuase the ethanol is cooling very fast in the radiator as it passes through.................BUT, What may actually be happening, is that it also heats up very quickly, not the whole quantity in the system, but just the very small volume touching the tubes inside the cooler when a very big rush of boosted air goes through, inlet temps into the cooler are probably in the order of 150-175 degreesC, and the ethanol may be literally boiling, or at least getting too hot too quick that the cooler has no actual heatsink ability in its fin surface. I don't really fnow hey, I'm going to try more cooling mediums, such as plain water and water and glycol and see what results I get, another alternative if it is getting too hot with the ethanol is simply give t a bigger pump so it flushed really quickly of the ethanol that is really hot. I'll keep ya posted. [Updated on: Thu, 03 February 2005 22:36] [Report message to a moderator]

	Subject	Poster	Date
	thoughts on barrel coolers???	jcmunga	Wed, 02 February 2005 07:32
	Re: thoughts on barrel coolers???	YelloRolla	Wed, 02 February 2005 07:44
	Re: thoughts on barrel coolers???	jcmunga	Wed, 02 February 2005 07:55
	Re: thoughts on barrel coolers???	shinybluesteel	Wed, 02 February 2005 07:46
	Re: thoughts on barrel coolers???	680OST	Wed, 02 February 2005 11:29
	Re: thoughts on barrel coolers???	jcmunga	Wed, 02 February 2005 11:38
	Re: thoughts on barrel coolers???	680OST	Wed, 02 February 2005 11:35
	Re: thoughts on barrel coolers???	Allan	Wed, 02 February 2005 11:43
	Re: thoughts on barrel coolers???	jcmunga	Wed, 02 February 2005 11:46
	Re: thoughts on barrel coolers???	oldcorollas	Wed, 02 February 2005 11:55
	Re: thoughts on barrel coolers???	thechuckster	Wed, 02 February 2005 12:17
	Re: thoughts on barrel coolers???	shinybluesteel	Thu, 03 February 2005 04:07
	Re: thoughts on barrel coolers???	Allan	Wed, 02 February 2005 11:52
	Re: thoughts on barrel coolers???	YelloRolla	Thu, 03 February 2005 05:24
	Re: thoughts on barrel coolers???	680OST	Thu, 03 February 2005 22:34
	Re: thoughts on barrel coolers???	680OST	Thu, 03 February 2005 22:43
	Re: thoughts on barrel coolers???	shinybluesteel	Thu, 03 February 2005 23:45
	Re: thoughts on barrel coolers???	Joshstix	Thu, 03 February 2005 23:55
	Re: thoughts on barrel coolers???	680OST	Fri, 04 February 2005 02:14
	Re: thoughts on barrel coolers???	oldcorollas	Sun, 06 February 2005 11:40
	Re: thoughts on barrel coolers???	MS-75	Fri, 04 February 2005 20:38
	Re: thoughts on barrel coolers???	680OST	Sun, 06 February 2005 11:15
	Re: thoughts on barrel coolers???	shinybluesteel	Sun, 06 February 2005 11:42
	Re: thoughts on barrel coolers???	fatboy	Mon, 07 February 2005 06:42
	Re: thoughts on barrel coolers???	YelloRolla	Mon, 07 February 2005 06:56
	Re: thoughts on barrel coolers???	fatboy	Mon, 07 February 2005 08:00
	Re: thoughts on barrel coolers???	680OST	Wed, 09 February 2005 08:36
	Re: thoughts on barrel coolers???	jcmunga	Wed, 09 February 2005 08:57
	Re: thoughts on barrel coolers???	mrshin	Wed, 09 February 2005 12:14
	Re: thoughts on barrel coolers???	MS-75	Thu, 10 February 2005 07:59

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