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Author Topic:   OVERHEATING PROBLEMS
SIRANTHONY
Member
posted April 12, 2004 05:19 PM
lose the reduction pullies and go to a 1-1 setup also check your timing. read your plugs could be to lean last but not leatse check for vacume leaks. might want to try distilled water also and a gutted out thermostat as a restrictor. what ,kindfa fan are you running and how deep is it in the shroud

[This message has been edited by racer17j (edited April 12, 2004).]

SIRANTHONY
Member
posted April 13, 2004 02:54 AM
I second the motion on getting rid of the pulleys, run a 1:1 system.
I would also dump the fan, I was running a 6 blade also, but switched to a 4 blade, big difference on air flow.
Put a piece of paper in front of the radiator when it is idling, does the paper stick to the front of the radiator on it's own?
Make sure the fan is about 1/2 way in the shroud.
Do you have enough air holes in the grill also?
Do you have a air scoop under the car to direct air up into the radiator?
All this is assuming you have the right timing and jetting in the car.....Do You?


racer2
Member
posted April 13, 2004 07:09 AM
go back to one to one on pullies.run 5/8
or 3/4 restrictor.my car always ran hot with reduction pullies


dirtbuster
Member
posted April 13, 2004 08:09 AM
Id lose the restrictor go with a 1:1 setup and a 4 blade fan half in half out of the shroud. Then make sure you can get good airflow to the front of the radiator.


racerman707
Member
posted April 13, 2004 10:15 AM
Some 3 core stock radiators have 1/4 inch runs in them and some have 1/2 inch runs.Might check this too.The 1/4 inch runs will make you heat.


SIRANTHONY
Member
posted April 13, 2004 12:11 PM
I could be wrong, but from everything ive read on this, 1 to 1 pulleys on a stock pump is not a good idea b/c a stock pump will not keep up and will cavitate at high rpm's causing air pockets. Im fixing to switch to the 1 to 1 set up but im running a high flow aluminum water pump. Is this info correct or am i reading false info?



smallrock98
Member
posted April 13, 2004 01:48 PM
Overheating problems..............LOL yes, I've been there and I think we all have.

Now I cant get the darn thing hot enough......LOL

If it aint runnin too hot, it's running too cold. OHHHH, THE MADNESS!

robhbk24
Member
posted April 13, 2004 02:47 PM
What type of fan? Stock style can flatten at high rpm and so can the aluminum style. We run the plastic in Florida on 80+ degree nights and some 90+ degree days and don't have a problem.


Flanndad
Member
posted April 14, 2004 04:37 AM
One other thing, when you top off the system, jack the front of the car up.
Get the radiator alot higher than the engine, let it run for a while and burp itself.
Then top off put on cap and let engine down.

Like they said a stock will cavitate some under high rpm, the more air you can get out of the system the better.

I was having problems last year, took the advice from this forum, went out the last two races and never got over 160*. Now i have to work on getting mine hotter.

Good 4 blade, shroud, fan 1/2 in it, stock water pump, 1:1 stock pulleys, aluminum radiator, 28 lb cap, plenty of air flow, air dam, 5/8 washer, back flush fins always, straight distilled water, and burp the system ever time.

SIRANTHONY
Member
posted April 14, 2004 06:59 AM
also use a better than stock pump.
my stock pump never moved enough water
ristrictor or no ristrictor.stock pumps seem to work on some cars but didnt work on mine.

[This message has been edited by racer2 (edited April 14, 2004).]

racer17j
Member
posted April 14, 2004 06:27 PM
to fix the air pocket deal i use a dump valve on the top of my thermostat housing thats the highest point of my system i used a housing that had the sending units in it and rplaced them with a 3/4 in ball valve then when i fill the rad i fill it full then crack the valve till water runs out then close the valve and put the cap on her and no air pockets this also works good to cool the car after that race instead of having that hot water sitting in there you can release the pressure so you can open the cap and put cooler water in it will drop your temp 20-35 degrees in a matter of minutes. it's also a good way to flush the rad out just open the valve and put the hose in the radiator and let her run for a while sometimes we have to use river water if you use up all our fresh so i like to flush it every once and a while

[This message has been edited by racer17j (edited April 14, 2004).]

Flanndad
Member
posted April 15, 2004 05:29 AM
Hey Siranthony, it's really hard to say what probally helped the most. The cooling system is one big group effort on the car. If one thing is off it could effect the rest of the system.
One more thing I did, that if I had to guess, I would say help the most is:
Make sure the fan belt isn't slipping at all.
With the car not running grab the fan can you move it. I had a small power steering leak also, which was greasing up the belt some.
I cleaned the belt and pulley, also used my die grinder and put some small grooves in the crank pulley to help with belt slippage, tightened belt.
The fan take's almost all I can do to turn it by hand.
I think that was my biggest problem.


24s52
Member
posted April 21, 2004 08:09 AM
River water? You shouldn't let go of all your secrets like that. Next thing you know...lol


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