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Author Topic:   Front Pulleys Am I ???
Wheels47
Member
posted March 06, 2002 10:23 PM
4 BLADE STEEL FAN, WILL COOL YOU A HOLE BUNCH BETTER.

AFTER TRYING SEVERAL DIFFERENT OPTIONS I FINALLY GAVE INTO WHAT EVERYBODY AT THE TRACK WAS TELLING ME. I CAHNGED MINE AND RAN 20 DEGREES COOLER (220 TO 200) SINCE THEN I HAVE MASSAGED MY COOLING SYSTEM AND I KNOW RUN 180 TO 200 DEGREES WITH A ALUM. 18 DEGREE ENGINE IN A LATEMODEL AND I DO NOT HAVE THE FRON OPENED UP.

P.S. I THREW THE 6 BLADE FAN AWAY SO I WOULDN'T SELL IT TO ANYONE AND THEY HAVE THIS PROBLEM.

KELLY HANVEY WWW.DIRT-RACERS.COM/HANVEY.HTM

Wheels47
Member
posted March 07, 2002 07:34 PM
The pulley sizes sound correct, putting a larger pulley on the water pump reduces the volume it pumps. But there are other variables to having a good cooling system. 1st do you have a good four core aluminum radiator, 2nd to have the proper size restricter or thermostat, 3rd to have a good fan and yes the 4 blade steel fan is a good one. 4th is to have a good shroud. 5th make sure you have a good radiator cap I run a 21-25 lb. cap. Last is to make sure all the air that is possible is flowing through the radiator and not around or over it. hope this helps.


Wheels47
Member
posted March 18, 2002 06:15 PM
Something else you may want to try is a cooler plug. I was running a constant 220 and a friend of mine told me to go to a cooler plug and I am down to 190...200 on a hot night. Just my two cents.


merlinmech
Member
posted March 19, 2002 12:27 PM
you said you installed a new radiator. was it coolong before that? you can get a bad radiator. might check that. also try larger jets in the carb. just remember to keep your hat on so you don't pull all your hair out. good luck.


Scoot
Member
posted March 19, 2002 07:19 PM
I don't use a restrictor, and I use an expansion tank(old antifreeze jug). I also have a griffin radiator using a 6 blade steel fan with the 30% reduction pulleys. I ran March 7-10 at Flippin and never got over 170 even in the 30 lap feature. Try it without the restrictor and with the fan about half inside the shroud. They say water is better by itself. Just my 2 cents hope it helps. Check out www.stewartcomponents.com they have some great tech articles.

------------------
Scoot
Smith Racing Team
870-365-5989


millerlt3
Member
posted March 19, 2002 08:07 PM
Hey Wheels47, 1 more thing you might want to check, and that is to verify that the gauge is good and reading the correct tempature, maybe just put a new one in just for piece of mind. And what Scoot says is also correct, that water is better because all that antifreeze does is of course not freeze but in our case all the antifreeze is good for is controling the boiling point. I run 1/3 of a gallon of antifreeze and the rest is water.


driver27
Member
posted March 20, 2002 09:22 AM
You mentioned that you think you may be suffering from a fuel shortage.. When you changed the jets, what did the plugs look like? If the plugs look really lean no matter which jets your using, and you think you may be getting because a lack of fuel, you might want to look for vacume leaks as well. Just a thought.


Wheels47
Member
posted March 23, 2002 09:16 AM
Hey Wheels47-
I think that the radiator is only a 2 core....I noticed someone above said to try a 4 core!! Hmmm


Robcat
Member
posted March 25, 2002 06:20 PM
Just a thought! Have you checked the timing? Have you checked the timing light & or marks on the dampner? If it gets hot fast we have found problems there. Just an idea.

Good Luck!

Wheels47
Member
posted March 28, 2002 10:27 PM
Robcat--- we will check these marks out--- if it's getting hot because of timing would you say we are advanced to much or not enough---which will run hotter higher or lower advance...

Dirt-tracker I think the belt loose maybe be another area-- If you remember we can turn the fan but I think the crank was turning with it also so we need to double check that .. just a thought..

Keep um coming guys we are making notes and gonna be checking ever one of these till we find out why it's getting so hot..

BTW--we were rained out sunday and didn't get to practice--

fast19
Member
posted April 04, 2002 02:02 PM
I run 430 inch SBC iron motor, iron heads. Ran hot until I changed to a Stewart water pump at crankshaft speed (1:1 pulleys stock size) This is per Stewart web site recomendations. If you run alky or aluminum motors you can get by with less. I almost went nuts before finding this easy combo.
SEE YA and good luck!


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