please help me with my temp problem

Posted By: president61

please help me with my temp problem - 06/30/12 06:10 AM

67 coronet 440 .060 over, 509 cam, stock 26" rad with shroud and stock 7 blade clutch fan, 10 to 1 compression, 180 degree stat. i drove it today to town and it was about 83 degress outside. the temp guage(mechanical) just keeps climbing very slowly. by the time I got to town 200 degrees. drove home a few hours later, 210 degrees when i got home (15 miles) it hasn't boiled over yet. i have a 6 pac scoop that I thought would help with cooling but it doesn't. the carb isn't sealed to the scoop if that matters. i know the stat isn't sticking. any thoughts??

Posted By: calrobb2000

Re: please help me with my temp problem - 06/30/12 09:36 AM

hi
may be your distributor / timing rate .

what is your inital timing and what intake carb an do you have headers ??

Posted By: president61

Re: please help me with my temp problem - 06/30/12 09:50 AM

Quote:

hi
may be your distributor / timing rate .

what is your inital timing and what intake carb an do you have headers ??

12 degrees mopar performance M-1 Single plane, 750 holley dbl pumper headers are coated hooker comp

Posted By: 340SHORTY

Re: please help me with my temp problem - 06/30/12 12:03 PM

Id be looking at the fan clutch. When you shut the engine off, how long does the fan spin? How easy does it turn when hot? Do you have a spring in the lower hose? Is the rad clean?

Posted By: 79powerwagon

Re: please help me with my temp problem - 06/30/12 12:06 PM

How is 210� too hot?

Posted By: zrxkawboy

Re: please help me with my temp problem - 06/30/12 03:29 PM

Radiator known to be clean?
Fan shroud?

Posted By: 318 Stroker

Re: please help me with my temp problem - 06/30/12 03:41 PM

I had a problem with mine running hot on the highway. I put a spring in the lower rad hose to keep it from collapsing, and that solved the problem.

Posted By: RapidRobert

Re: please help me with my temp problem - 06/30/12 05:11 PM

Quote:

by the time I got to town 200 degrees. drove home a few hours later, 210 degrees when i got home (15 miles). any thoughts??

Is that stop & go/slower speeds or highway? 210 ain't terrible but it's getting there. If highway I would suspect a partly plugged rad.

Posted By: StealthWedge67

Re: please help me with my temp problem - 06/30/12 05:26 PM

Quote:

Quote:

hi
may be your distributor / timing rate .

what is your inital timing and what intake carb an do you have headers ??

12 degrees mopar performance M-1 Single plane, 750 holley dbl pumper headers are coated hooker comp

TOTAL timing is what you're looking for. 12* would be the initial, but if your using a stock distributor, and pushing the initial to 12*, you could be up over 40* total, which could cause it to run hot. Find out what your total is, or just back the initial down to about 6 or 8 and see if it affects the heat issue. If not, then you have eliminated timing.

Posted By: cdstl

Re: please help me with my temp problem - 06/30/12 06:48 PM

Quote:

I had a problem with mine running hot on the highway. I put a spring in the lower rad hose to keep it from collapsing, and that solved the problem.

This is the one that I used.

http://www.mustangsunlimited.com/itemdy00.asp?T1=RH52+01

Posted By: president61

Re: please help me with my temp problem - 07/01/12 04:50 AM

thanks everyone. i'm going to check timing and probably pull my rad and give it a thorough cleaning. i need to put that bottom air dam on too. i just have to make a seal since nobody repos them

Posted By: RapidRobert

Re: please help me with my temp problem - 07/01/12 04:53 AM

post what solves it

Posted By: SomeCarGuy

Re: please help me with my temp problem - 07/01/12 05:54 AM

That sounds like a flow issue to me.

210 is OK, but it's a problem warning. Shouldn't be that hot if things are up to snuff.

Posted By: calrobb2000

Re: please help me with my temp problem - 07/02/12 04:28 AM

hi
yes by all means you should have a spring in the lower one and a knowen good fan clutch .

your timing curve may need recalabrated .

move your timing up to 16 inital and make dist top out at about 34-36 max .

what is your app cranking comp psi ?

hi stall convertor can also add heat , use a big trany cooler in the air streem !

Posted By: twinscrew698

Re: please help me with my temp problem - 07/04/12 11:16 AM

Quote:

thanks everyone. i'm going to check timing and probably pull my rad and give it a thorough cleaning. i need to put that bottom air dam on too. i just have to make a seal since nobody repos them

That will really improve to lower your temp!
Some people have thrown these away in the past and now looking for em!

Posted By: furyous3

Re: please help me with my temp problem - 07/06/12 06:39 AM

If all the good suggestions given have been tried and you are still running hot, pull the thermostat out and drive it. If it runs colder then you have a bad thermostat. I found this out after several thermostats, all bad. Be sure to order a Mr. Gasket hi-flow, about 180* from O'Reilley's. That should help the flow problem.

Posted By: Mike P

Re: please help me with my temp problem - 07/06/12 12:38 PM

All of the thermostatically controlled fan clutches (the ones with the spring on the front side) I have gotten in the last several years have been factory set to lock up at 210 degrees. So basically on hot days out here that�s where my cars run (but I�ve never had one go over that as long as the clutch was good).

On a side note, if the spring on the front of the clutch is tightened (usually � a turn at a time), it will lower the temperature the clutch locks up).