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I have been looking for a way to keep our prowlers cooler. First of all I noticed that the radiator had no fan shroud so i came across this and figured hay why not put a thermostat swich so that you could turn it on as desired. Not only that but summit sells 10" Fan kit with a shroud that pulls 2200+ CFM as apposed to the SPAL version that comes with our cats that only puts out half. This is the setup we have on our stock prowlers and I thin from what I see is it only puts out 800-1000 but please correct me if I'm wrong.
SPAL USA


and this is what I'm talking about.

eBay Motors: Summit 381010 Fan and Shroud Combo Dual 10 in. Diameter (item 330318454148 end time Apr-28-09 22:48:57 PDT)


Please tell me what you all think
 

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The Spal is a much higher quality fan. It also has the curved S type blades which are much more efficient. I posted some information about this on another forum. I will try to copy and paste that here when I find it.
 

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Ok here is what I have found...

I spoke to Spal today as well as Brian at Custom Aluminum Radiators in Kingman. Spal recommends them for radiators, fans, and shrouds. Spal does not sell shrouds because there are so many fans and size variations it wouldn't be cost effective so they give that to the radiator shops.

Brian from Custom Aluminum Radiators gave me an education on cooling systems and how it all works together in harmony. As far as the shroud goes he doesn't think we need one on this type of fan. I am just telling you what I have been told. I am not saying this is accurate info. Call and discuss this with these guys if you would like. The plastic case that surrounds the fan is sufficient. It has to do with the recycling of air off of the tips of the fan blade and the venturi affect to suck air through the radiator. In some cases the where the fan blades stick out past the plastic housing you would need a shroud. I don’t know if we have a cooling problem with the XTZ 1000 because mine has been good so far. I have not seen ambient temperatures above 90 degrees yet though so time will tell. I know there are a few guys having issues but it seems to be linked to improper head torque or air in the system. Once those two are fixed it has not been a problem as far as I can tell. If someone has the ability to check the return water temperature on their XTZ 1000 and post some numbers that would be a big help in determining if there is a potential overheat problem. Mine is in the shop for the axle issues so I can’t perform any checks. Also shoot the radiator core with a temp gun and make a note of that as well. The radiator seems to be very large compared the 650 and 700 so I have to think the overheat issue is limited. There is a larger fan from Spal that looks as though it would fit in place of the stock one. The stock one is listed on Spal’s site as VA11-AP7/C – 57 A it has a current input max of 9.5 amps and pulls a max 1350 cfm. The one I was looking at as a replacement is Spal VA10-AP50/C – 61 A which has a current input max of 13.6 amps and a max cfm of 2270. I think the XTZ is good for 25 amps max? With lights on and fan at full speed I don’t know if it can handle it. Someone chime in if they can run the numbers and figure this out.




Spal Fans

1-800-345-0327

Custom Aluminum Radiators - Brian

1-928-681-6716
 

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try using 1/2" thick corugated material that sprint cars use in front of their rads.When mud fills up the holes take it out wash it. Works for us,hard to find supply sometimes.
 
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