ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum
ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: Mikerpm4x4 on July 06, 2005, 01:23:44 PM
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I have an 8 valve trackick that overheats after hammering on it for over 15 min or so. If it idles for a while it will cool down after a while. I can drive it at 55 all day without overheating. It just seems to happen at redline rpm for prolong periods. Ive done this in every kick ive owned and never had a problem. I have the heater bypassed on this one so the hose comes off the waterpump jacket and goes directly to the intake. The hose is aproximatly 5/8 and now has a slight kink in it because of its new direction. Is it important that that hose have good flow? Im wondering if it has a blown headgasket or just careless hose routing. Im leaving for Indiana tomorrow and Im debating on if I should haul this one or not.
Mike
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Cant help much besides to let you know that my 8V always runs cool even with 1/2 a rad full of antifreeze. I have damn near drained it dry and kept it cooled down with the heater running. Even my new 8V motor acts the same way.
Any water n the oil or leaks around the pump?
Zig
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is the stock clutch fan worn out? i'm on my second one this year already :-/
stu
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Check your oil pressure partial clogs in cooling system?
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Cant help much besides to let you know that my 8V always runs cool even with 1/2 a rad full of antifreeze. I have damn near drained it dry and kept it cooled down with the heater running. Even my new 8V motor acts the same way.
Any water n the oil or leaks around the pump?
Zig
No water in the oil yet. ::) No leaks in the pump either. Ive never had a kick overheat.
Mike
Mike
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is the stock clutch fan worn out? i'm on my second one this year already :-/
stu
Im pretty sure its good
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If you had a blown headgasket it would probably be apparent, my bet is on that kink. I'm sure it would be ok to leave it, just let up a but lol!
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Check your oil pressure partial clogs in cooling system?
They only clog I can think of is that hose being slightly kinked. Is it important that that hose have high flow?
Mike
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They only clog I can think of is that hose being slightly kinked. Is it important that that hose have high flow?
Mike
You could find out for about 5 bucks, go to your local home depot or whatever and buy some clear hose. rig it up longer so there's no kinks. I've seen that stuff used on rice rockets, although I wouldn't trust it for too long, anti freeze can get pretty caustic.
Adam
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Yes, that hose needs to flow,
the coolant flows thru the head
and out to the heater, then back
to the engine, if the coolant doesn't
flow the thermostat won't get hot
at the same time as the coolant and
head does, so it won't open soon
enough.
Coolant is always circulating around
the head and water jackets... well in
your motor it's not
;)
Wild
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Yes, that hose needs to flow,
the coolant flows thru the head
and out to the heater, then back
to the engine, if the coolant doesn't
flow the thermostat won't get hot
at the same time as the coolant and
head does, so it won't open soon
enough.
Coolant is always circulating around
the head and water jackets... well in
your motor it's not
;)
Wild
So if a heater core was plugged up it could cause an overheat?
mike
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You could find out for about 5 bucks, go to your local home depot or whatever and buy some clear hose. rig it up longer so there's no kinks. I've seen that stuff used on rice rockets, although I wouldn't trust it for too long, anti freeze can get pretty caustic.
Adam
I will buy real heater hose. ;D I just wont have time to test it thats why Im asking all the questions.
Mike
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So if a heater core was plugged up it could cause an overheat?
mike
yea, mine did. I just pulled the 2 heater cores lines from the engine bay, and stuck a hoseon the inlet, and let the water fly! Cleaned that sucker out GOOOOOOOOOOOOOD. The temp fluctuates from 1/4 way up the gauge to half, then back down consistenetly now. It's the aftermarket POS thermostat I installed.
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Yes, the plugged heater hose will make it
get hot, eventually the heat makes the
thermostat open, then it will cool off.
You might also test the flow of the water pump
by removing the thermostat, and seeing if it will
over heat, should be OK and not overheat, even
with the heater hose plugged off
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clogged rad with mud?
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clogged rad with mud?
Definatly not that. Clean as a whisle. ;)
mike
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Well I hope its just that hose, Im going to take that rig this weekend. I just cant belive that little restriction would do all that.
Mike
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Don't know if anyone mentioned it but,
If you don't have a thermostat put one in, I've found with out a restriction of some kind the coolant moves to fast and can't absorb the heat! Eventually makes the engine overheat...when you drop to a lower rpm the coolant slows, has time to absorb the heat and the engine temp drops.......
hope it helps
Zag
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I didnt remove it but mabey it was removed before I bought it... I will just put one of those in too.
Mike
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Thank you all for the quick responses. ;) I really apreciate it.
Mike
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I had lots of problems with mine that were due to an airlock. I have found that if you run it with the radiator cap off till the thermostat opens then it usually clears. You will see the water level drop sudddenly, just top it up and you're sorted (also works on a Honda VFR750).
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Don't know if anyone mentioned it but,
  If you don't have a thermostat put one in, I've found with out a restriction of some kind the coolant moves to fast and can't absorb the heat! Eventually makes the engine overheat...when you drop to a lower rpm the coolant slows, has time to absorb the heat and the engine temp drops.......
hope it helps
Zag
Yeah he's right. Actually plain water has better heat dissapation that coolant, except that plain water's boiling point is much lower. One thing that we would put in race bikes is water and a product called water wetter.
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is the stock clutch fan worn out? i'm on my second one this year already :-/
stu
WE HAVE A WINNER! Thanks for the help, I never would have tried this if you had not mentioned it. It worked great.
Mike