Visit The Dirt Forum for More Information

Author Topic:   Getting Hot - Need Help
flanndad#17
Member
posted September 14, 2003 08:15 PM
My car runs 215 or more most ever race, as soon as I get off it for a caution or the end of the race it will climb to 230 range right away, I put it in first gear and try to keep up the RPM's but it doesn't help.
Here's what I have:
Howe racing radiator, tubes are not enlarged
A good shroud, sealed good
5 blade fan, 3/4 of it in shroud
Hoses are spring type
Running the red restrictor (5/8's Maybe)
Running antifreeze with water wetter
22lb radiator cap
Holley 750 72/80 jets w/power valve
timing set at 35* at 2,500 rpm.

plastic cutlas nose piece, with the bottom cut out and about 20 5/8" holes cut in the top.

The fan seem's to be pulling a lot of air through the radiator, you can really feel it with your hand.
I'm not sure if the water is going fast enough though the radiator , I know you want it to be slow enough that it cools off.

Just looking for some help.


Dirt-Tracker
Member
posted September 14, 2003 10:54 PM
We run a 28-32lb cap. Also we have taken a thermostat and cut the guts out of it then put it back in.

------------------
"Somedays your the dog, and somedays your the fire hydrant!!!"

www.geocities.com/albertson28racing

FastEddy
Member
posted September 14, 2003 11:29 PM
Use distilled water. It will lower about 10-15 degrees. Is your water pump a stock one?Is your water pump old? If so, get a better pump. Note on the cap: The higher the pressure the higher the boiling point of your water/antifeese mix.


Flanndad
Member
posted September 15, 2003 06:29 AM
The water pump was only ran about half a year and it is stock, I needed the power steering mount location.

I'm also running stock pulley's what size do you need to drive it 1:1, is there a chance i'm underdriving my pump.
I'll have to measure them tonight to see what size I have.


racer2
Member
posted September 15, 2003 07:58 AM
id get a better pump and try it
worked for me


dirtracer7
Member
posted September 15, 2003 08:13 AM
Hey Flanndad when you put the nose on is it open from the nose to the radiator on the botom.When I put the plastic nose on mine I found out if its open there the air that goes through the grill will go under the car instead of going to the radiator.You can box it in or put an air dam below the radiator. I fianally tore the car up this year.Was oming out of 4 on a restart and went to pass the car in front of me almost had him cleared when he hit me in the right rear ,started heading to the wall and brought it back ,got hit again and brought it back but the 3rd time I got pyle drove by another car and hit the inside rail ended up with a bent frame on the left front but its fixable and I have about 6 months to fix it all we had left was the cheaters night .I guess I won't be trying I-96 in October.


Flanndad
Member
posted September 15, 2003 09:36 AM
I do have a small Air dam, i'm kind of wondering if it is enough.
Maybe I'll try and box that up somemore also.

Hey dirtracer, I finally tried Crystal Raceway this weekend.
Did Ok but didn't make the A-main, I figured it out just a few laps to late.
Take 5 from heat finish 6, take 4 from B-main finished 5th.
Sorry to hear about the car, but it's still about 3 weeks to Ionia, there's still time.
Paying $100 to start.


dirtbuster
Member
posted September 15, 2003 10:15 AM
If its a stock pump you may need to slow it down. As stock pump does not pump well at high rpms. water will cavitate in the pump and not go anywhere. Id take the restrictor out, space the fan so only the front half of it is in the shroud, and double check jetting to make sure you are not a little on the lean side. Oh and also try a 4 blade steel fan.

[This message has been edited by dirtbuster (edited September 15, 2003).]

GO 24
Member
posted September 15, 2003 12:16 PM
For sure check into a better pump, go to distilled water, and a good tight air dam between the radiator and nose----use a plastic flap under the radiator to help catch the air going under the car.


flanndad#17
Member
posted September 15, 2003 10:23 PM
I checked the restrictor tonight it is the 1" restrictor.
The fan is a 15" 6 blade.
I'll try and find a 4 blade this week, it sounds like that is preferred.
I'm also going to refill with distilled water and antifreeze along with water wetter.

One more thing early this year I did blown a motor (dropped a valve) with this radiator. I flushed it and nothing really came out.
I'm starting to wonder if my radiator or water pump my be harmed from that.
Should you replace either of them after blowing a motor?
There were metal shaving every where in the top of the motor.

[This message has been edited by flanndad#17 (edited September 15, 2003).]

racer17j
Member
posted September 15, 2003 11:06 PM
distilled water and nothing else when you add stuff to distilled water it's no better then regular water and no antifreeze it holds heat in just run the straight distilled water and the blown motor it's very unlikley to have hurt the radiator unless you go into the water jacket


eighty
Member
posted September 15, 2003 11:23 PM
I must say the distilled water works !!
My car ran 220-230 last year and I changed to distilled water ONLY along with a good shroud my temp was only 200 max on a 85 degree nite!!!


waltonjr1
Member
posted September 16, 2003 12:23 AM
What do you use for lubrication,would it really hurt to add water wetter to distilled water?

------------------
DEANJR#22


Flanndad
Member
posted September 16, 2003 06:19 AM
When I dropped the valve it did puncture a hole through the water jacket in the head.

I'm not sure if this points to any problem, but when I come in and it's hot I spray it down with water in a 2 gallon sprayer, it seems to cool down fairly fast.


istock59
Member
posted September 16, 2003 10:56 AM
It's possible that when you dropped the valve that combustion pressure got into the radiator and swelled the tubes. I'd take a real good look at the rad and consider replacing....

How often do you wash the dirt out of the rad? I have to do mine nearly every week or the temps start creeping up.




Flanndad
Member
posted September 16, 2003 11:45 AM
I do flush out the fins from the back side every week.
Maybe i'll run it by the radiator shop and see what they think.


dirtbuster
Member
posted September 16, 2003 01:03 PM
Are the fins in good shape.. i mean they arent bent over or anything blocking airflow?


racer17j
Member
posted September 16, 2003 05:16 PM
walton if you add anything it defeats the purpose of the distilling process basicly distilled water is 100% pure it's the impurities that hold heat in it's kinda like in high school science class the teach showed us how the impuritis in water is what makes it conduct electricity so well he took a battery and hooked it up to a light balb cut the pos wire and stuck bolth ends in distilled water and no light but then when he poured in some salt the light instanly came on same concept basily. thats why you need to flush the system real good before you add the distilled water to get rid of as much crap as you can get out of it


Flanndad
Member
posted September 17, 2003 06:20 AM
The fins are in good shape, I took a real good look at the radiator last night.
It looks good, in three or four spaces less than the size of a dime the fins are bent some. No big deal..

The radiator shop said to pull the intake and make sure the gasket's are not backwards, he said the bolt holes would still line up but the water passage's may not.
Is this true?

This is a dumb question, but a SBC standing from the front, the fan does run clockwise correct?

dirtracer7
Member
posted September 17, 2003 07:16 AM
Flanndad the gasket can be put on backwards but it depends on what brand of gaskets you use.stock replacement gaskets might have a plate covering the end water passage if you put them to the front it blocks the water off on the front end of the heads.Have seen alot of people do this on their everyday drivers and cause them to run hot.I think felpro gaskets are open on both ends.You can pull your t-stat housing and stick a long screwdriver in ther to check that.


Flanndad
Member
posted September 17, 2003 10:24 AM
I'll need to check the receipt's but I'm pretty sure they were Felpro.


racer17j
Member
posted September 17, 2003 04:49 PM
ifmthey are fel pro just look at the motor you should be able to see part of the gasket the light blue with navy stripe is a felpro


prostock15
Member
posted September 17, 2003 06:55 PM
you know that 215 is not to hot he!! thats not even boiling chevy engiones dont make good horsepower till 210 to 225 plus depends on what kind of oil you run but look at nascar motor they runn 230 ALL the time and thats for hours they dont worry till 250 or so 215 is fine to run plus they are going to climp a little when you slow down before you shut it off make sure that you cool it down to 200 or so before you load it or shut it off


dirtbuster
Member
posted September 18, 2003 07:48 AM
The nascar teams running 230 are also running oil coolers to keep their oil temps down.. Unless you are running an oil cooler as well i wouldnt want to run that warm. Your oil will easily be 40-50 degrees hotter than your water temp. Any higher than that and the oil cant support the loads you are you need it to. I wouldnt say 215 is too hot but much hotter and the oil starts to let you down not the water.


sbateman
Member
posted September 18, 2003 04:43 PM
what pullys are u running /and u may wanna check ur jets semms a little low for me


sbateman
Member
posted September 18, 2003 04:46 PM
oh by the way what is your temp at idle before u go out to run ,this important to know if its a coolong problem or a fuel problem


flanndad#17
Member
posted September 20, 2003 07:50 AM
Ok guys, yesterday I ran a bottle of ceramic block sealing thru, then drained system real good.
Refilled with 2 gallons distilled water, and two bottle's of water wetter.
Then changed fan from a 15" 6 blade (bought from the racing store) to a 17" 4 blade off of a 67 surburban.
It idled in the pits at about 165* ran a hard 12 lap heat, and came off the track at 160*. It was about 20 degree's cooler track temperature last night also.

Not sure which inprovement fixed it or a combo of all.


Flanndad
Member
posted September 22, 2003 03:08 PM
Ran Saturday night also, Idled 165*, Ran 22 laps in the feature and pulled off at 155*.

Is this running to cool, or is this ok?



Back to the Archives