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Author
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Topic: Temp problems maybe thermostat ??????
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Blue Oval
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Member # 2548
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its a new motor 347 stroker stock fully ported heads stock lower int and upper. 10.5 to 1 compresion bored .30 over, new radiator, water pump ,all the excessories everything is new. Driving down the freeway temp starts to climb really quick after its been a steady 160* for a good 5min or more. i have a 160* therme in it car also runs really rich. breather cap was steaming and for some reason all the water gets pushed into the overflow and drains radiator , im thinking the thereme is bad or is locking closed or open i think it has some thing to do with this. please help sick of the ![[BS flag]](graemlins/bs_flag.gif) with my car ive been through everything you can think of ![[Confused]](confused.gif)
[ August 12, 2003, 10:35 PM: Message edited by: Blue Oval ]
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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mike g
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Member # 2919
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i would take that 160 out and put a 180 in there. simply because with the 160 the fluid doesn't have enough time inside the radiator to actually cool it down since the thermostat is basically open all the time.
you said all the water gets pushed out? errrr should be a mixture of water and coolant. 50/50-70/30(water/coolant). maybe this is your problem.
How old is your radiator cap? maybe its gone bad and its not holding the pressure in.
mike
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FOUR EYED PRIDE!!!!!!
Posts: 289 | Registered: Jun 2003
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Blue Oval
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Member # 2548
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radiator cap is brand new and the head gasket was just replaced cause i had a little water in the oil before cause the lower intake didnt seal correctly. and also the water pump is brand new
[ August 13, 2003, 07:20 AM: Message edited by: Blue Oval ]
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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91 5.0
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Member # 1527
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How many miles do you have on the new set of headgaskets? Steam coming out of the breather is a pretty good sign that the HG's are gone.
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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Blue Oval
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Member # 2548
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less then 50 miles on the new HGs.
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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91 5.0
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Member # 1527
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posted
Its possible that the water you previously had is burning and thats what the steam is. Change the oil and if it doesnt stop within the next 20-30 miles, i'd say you have a blown HG.
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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Blue Oval
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Member # 2548
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posted
would u change the stat also and put a 50/50 mix in it?
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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91 5.0
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Member # 1527
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posted
Yes, i'd also look at the water pump. How old is it? Is it turning in the right direction? Just a couple things to look at, but it still sounds like a HG.
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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LAST302
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Member # 808
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quote:
Originally posted by mike g:
i would take that 160 out and put a 180 in there. simply because with the 160 the fluid doesn't have enough time inside the radiator to actually cool it down since the thermostat is basically open all the time.
you said all the water gets pushed out? errrr should be a mixture of water and coolant. 50/50-70/30(water/coolant). maybe this is your problem.
How old is your radiator cap? maybe its gone bad and its not holding the pressure in.
mike
Change the stat and then see first! Good call!!
Posts: 1147 | From: Disco Bay | Registered: Jan 2002
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Blue Oval
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Member # 2548
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brand new water pump.thanks the suggestions will change those items.
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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