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Author Topic: limited with a fever  (Read 1740 times)
nobodyjm
Newbie
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Posts: 16


« on: August 17, 2010, 06:23:41 pm »

    i run a limited with an overheating problem (about 260 in the feature last week),350 (.060 over) ,1:1 belt drive, 5/8 restrictor, triple past radiator, timing is a fixed 35 degrees, 4 bbl. carb.( the sp. plugs read to have a good burn pattern). i am new to dirt track, is this normal or not, i could use any help.

           
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haulsas
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Posts: 494


« Reply #1 on: August 17, 2010, 06:26:23 pm »

The 0.60 could be part of it. Are you running straight water or do you have some additive in it. How old is your radiator?
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nobodyjm
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Posts: 16


« Reply #2 on: August 17, 2010, 06:29:59 pm »

i washed the fins and cored it out right before last race
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Jwyble18
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Posts: 65



« Reply #3 on: August 17, 2010, 06:33:04 pm »

A big part of your problem could be that you have a triple pass radiator and a stock water pump...do you have a good pump on it? Also are you running a thermostat or a washer?
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nobodyjm
Newbie
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Posts: 16


« Reply #4 on: August 17, 2010, 06:37:14 pm »

oh, i have tryed addetives and they don't help any, right now i have pure water, i checked after the race and the rad. is spotless on the inside and out. the water pump is long stock pump with a 5/8 washer.
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Jwyble18
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Posts: 65



« Reply #5 on: August 17, 2010, 06:40:12 pm »

Try a bottle of water wetter and you may have to change to a larger washer, also get a higher performance water pump and it should help...do you have a fan shroud?
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nobodyjm
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Posts: 16


« Reply #6 on: August 17, 2010, 06:48:33 pm »

      i have a fan shroud but on an electric fan. i tried the water wetter and the ppl. ice neither one helped. how do i know if my rad. is circulating to fast or to slow.
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Jwyble18
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Posts: 65



« Reply #7 on: August 17, 2010, 07:28:27 pm »

You have an electric fan on it now?
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nobodyjm
Newbie
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Posts: 16


« Reply #8 on: August 17, 2010, 07:32:33 pm »

yes, in front of the rad. with a shroud. all sealed up. i thought about adding a mechanical fan also, but the rad. has alot of air moving throw it already.
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olddyno
Newbie
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Posts: 14


« Reply #9 on: August 17, 2010, 07:38:35 pm »

I would get rid of the electric fan and get a good 4 or 5 blade fan, try that, if no luck you might have to go to a better water pump, I really dont see the water pump being a problem due to the fact I run a stock one on my car with only a double pass radiator with no problem.
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TurboTyler
Guest
« Reply #10 on: August 17, 2010, 07:41:35 pm »

hang on a sec is it 260 when your pulling into the pits like caution comes out and ur rolling off the track to the pits or is it 260 when ur on the mat going down the straight away at the end of the race? and like john said stock pump doesnt help. no fan shroud could be one. fan placement in the shroud could be a big deal. the blades haft to be half way in and half way out of the shroud for maximum flow.
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DRTRK23
Newbie
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Posts: 98


« Reply #11 on: August 17, 2010, 07:54:16 pm »

triple pass isn't helping either .... the design puts the tubes behind each other causing the fronts to shroud the rears. ... this isn't Nascar, we dont go fast enough to circulate that kinda air flow ... get the fan out from in front of the radiator (its blocking as much air as its pushing through) ... take out the restrictor (its been proven by slowing the water down your not gaining anything cause even though the water is cooling in the radiator the water in the block is getting hotter, you have already controlled the flow by going one to one) and definately get the GOOD 4 blade fan from GM off the diesel motor ...
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nobodyjm
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Posts: 16


« Reply #12 on: August 17, 2010, 08:26:55 pm »

it starts off at 140 before the race, and climbs during the race,under cation about 3000 rpm's it fall slowly, but i am lucky to finish the feature. it don't matter how i run the car easy or just wide open it heats up about the same. i have a single pass rad. (on the shelf)but the cores are build the same (one behind the other).
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triplerracing98
Newbie
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Posts: 30


« Reply #13 on: August 17, 2010, 08:45:59 pm »

I would pull the heads & have them checked, are you running a 4 bladed fan? Are you spinning the rear tires, might need more forward bite.
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haulsas
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Posts: 494


« Reply #14 on: August 17, 2010, 10:29:59 pm »

I hope this doesnt come across wrong, I am only trying to help,,,,do you have the fan on backwards, or does an electric allow you to change the blades out?
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