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Re: REBUILT 440 ENGINE overheats - HELP. [Re: SomeCarGuy] #1513421
10/08/13 07:22 AM
10/08/13 07:22 AM
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Massachusetts, USA
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Quote:

Since it runs at 170, why not let the next guy deal with it? It is a flip afterall.






70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8
Re: REBUILT 440 ENGINE overheats - HELP. [Re: RapidRobert] #1513422
10/08/13 07:27 AM
10/08/13 07:27 AM
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Massachusetts, USA
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Quote:

If no stat SOLVES the overheating then k.i.s.s. you had the misfortune of having 2 bad stats in a row (the one that was in there went bad & the new one you bought). As said you might test a new one suspended in a pot of water & bring it to a boil (candy thermometers are cheap) & dont forget the temp gun . I push the stat open several times by hand to make sure it is free/not stuck before I check it on the stove. Holler how it turns out




The water is boiling now !


70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8
Re: REBUILT 440 ENGINE overheats - HELP. [Re: RapidRobert] #1513423
10/08/13 07:56 AM
10/08/13 07:56 AM
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Quote:

If no stat SOLVES the overheating then k.i.s.s. you had the misfortune of having 2 bad stats in a row (the one that was in there went bad & the new one you bought). As said you might test a new one suspended in a pot of water & bring it to a boil (candy thermometers are cheap) & dont forget the temp gun . I push the stat open several times by hand to make sure it is free/not stuck before I check it on the stove. Holler how it turns out




Stuck the old t-stat in boiling water - opens wide. I think that
rules out bad stat.


70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8
Re: REBUILT 440 ENGINE overheats - HELP. [Re: v8punch] #1513424
10/08/13 08:47 AM
10/08/13 08:47 AM
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Quote:

Are you sure if engine was machined and assembled with correct clearance?
If it's tight, temperature goes up.

Carburetor is no lean? If it's lean, temperature goes up.




Engine runs at 170 degrees without any thermostat - oil pressure is 60.

It is an after market water PUMP housing? Not sure why or if that would matter?

7880098-DSC_0515.JPG (41 downloads)

70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8
Re: REBUILT 440 ENGINE overheats - HELP. [Re: MASSMOPAR] #1513425
10/08/13 09:42 AM
10/08/13 09:42 AM
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Irving, TX
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Quote:

It is an after market water PUMP housing? Not sure why or if that would matter?





Some of the aftermarket pump housings had a lower passage that was nearly blocked off.
That was several years ago and I believe the problem has been corrected.

HOWEVER, since your car cools fine without a stat you can rule out the pump housing. You are moving water.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
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Re: REBUILT 440 ENGINE overheats - HELP. [Re: SomeCarGuy] #1513426
10/08/13 09:47 AM
10/08/13 09:47 AM
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U.S.S.A.
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Quote:

Since it runs at 170, why not let the next guy deal with it? It is a flip afterall.






Re: REBUILT 440 ENGINE overheats - HELP. [Re: JohnRR] #1513427
10/08/13 09:55 AM
10/08/13 09:55 AM
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Delray beach, Florida
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Does the lower hose have a spring in it to keep it from collapsing? It might not collapse without a stat in it but it will when the coolant gets pressurized against the stat.
By the way, just in case, the spring on the thermostat gets installed down. Make sure it's not backwards.


machine shop owner and engine builder
Re: REBUILT 440 ENGINE overheats - HELP. [Re: JohnRR] #1513428
10/08/13 10:00 AM
10/08/13 10:00 AM
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Blair County,PA
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Quote:

Quote:

Since it runs at 170, why not let the next guy deal with it? It is a flip afterall.










But,the next guy will post the same thing and we'll have to start all over again !!

Re: REBUILT 440 ENGINE overheats - HELP. [Re: Performance Only] #1513429
10/08/13 10:03 AM
10/08/13 10:03 AM
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Massachusetts, USA
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Quote:

Does the lower hose have a spring in it to keep it from collapsing? It might not collapse without a stat in it but it will when the coolant gets pressurized against the stat.
By the way, just in case, the spring on the thermostat gets installed down. Make sure it's not backwards.




No Collapsing - no spring - no backwards

Thanks


70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8
Re: REBUILT 440 ENGINE overheats - HELP. [Re: Performance Only] #1513430
10/08/13 10:05 AM
10/08/13 10:05 AM
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Lincoln Nebraska
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OK, (1) the stat is good (opens at or near the correct rating I'm assuming). (2) The overheating vanishes when the stat is taken out. (3) it's installed correctly (spring down). It ain't making no sense. We gotta be missing something simple. I would get that temp gun


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Re: REBUILT 440 ENGINE overheats - HELP. [Re: RapidRobert] #1513431
10/08/13 10:36 AM
10/08/13 10:36 AM
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Massachusetts, USA
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Quote:

OK, (1) the stat is good (opens at or near the correct rating I'm assuming). (2) The overheating vanishes when the stat is taken out. (3) it's installed correctly (spring down). It ain't making no sense. We gotta be missing something simple. I would get that temp gun



The temperature is very cool on top of rad and very hot low on rad and very hot at pump housing. I'll get numbers with the gun later.


70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8
Re: REBUILT 440 ENGINE overheats - HELP. [Re: 540challenger] #1513432
10/08/13 10:49 AM
10/08/13 10:49 AM
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Quote:

Question on a big block can you reverse the intake gasket and block off the coolant passage i have seen that happen on other makes??




No, BB Mopars have no water in the intake. You can block the heat riser, but that has nothing to do with water.


I want my fair share
Re: REBUILT 440 ENGINE overheats - HELP. [Re: MASSMOPAR] #1513433
10/08/13 12:29 PM
10/08/13 12:29 PM
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Irving, TX
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Quote:

It is an after market water PUMP housing? Not sure why or if that would matter?







That's why the upper hose is cool. It's on the floor.



We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
Re: REBUILT 440 ENGINE overheats - HELP. [Re: 540challenger] #1513434
10/08/13 12:34 PM
10/08/13 12:34 PM
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st.cloud fl
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No coolant through. Intake

Re: REBUILT 440 ENGINE overheats - HELP. [Re: MASSMOPAR] #1513435
10/09/13 04:57 PM
10/09/13 04:57 PM
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Minnesota, USA
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Thermostat first. Check for cracked block issues...Do you know history on the block? How long run it w/o thermostat? If it doesnt go pst 170 degrees after 1/2 hour driving it, it is just a thermostat. in upside down.

Re: REBUILT 440 ENGINE overheats - HELP. [Re: minnesota guy] #1513436
10/09/13 05:50 PM
10/09/13 05:50 PM
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Northern NJ
68 Sat Offline
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I had the exact same problem and spent a small fortune trying to fix it. At the end of the day it was the MP non adjustable advance in the distributor (sp?) that was causing my issue. I changed to a Mallory unit and solved my overheating problem instantly. The way it was explained to me was if the advance is not adjusted properly it will cause the engine to run hot. My explanantion is elementary but I hope you get the jist...good luck.

7881701-engine.jpg (41 downloads)

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Re: REBUILT 440 ENGINE overheats - HELP. [Re: feets] #1513437
10/09/13 06:09 PM
10/09/13 06:09 PM
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Posts: 28,312
Cincinnati, Ohio
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Quote:

Quote:

Facts: Both pumps/impellers turn clockwise -




Both impellers are faced the same. Neither is backwards. The blades themselves are curved the same way.

Quote:

Do ya think installing the left pump non ac will make any difference?





No. You are moving water.

I'd stick the first pump back on and follow the advice I posted on the other thread. You could have saved the time and trouble of pulling the pump.

Get an IR temp gun. Start looking for odd heat patterns.

Read that post I linked earlier.
There are no secrets in overheating issues.You can probably diagnose that thing in less than 10 minutes with a temp gun.




Not if it's a tuning problem which I'm betting it is just as long as he has a spring in the lower hose.

Another thing I would ask the OP is,
did you purge the system of air?

Did you drive the car or it just idling in the driveway when it overheated?

Re: REBUILT 440 ENGINE overheats - HELP. [Re: 68 Sat] #1513438
10/09/13 06:11 PM
10/09/13 06:11 PM
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Posts: 28,312
Cincinnati, Ohio
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Quote:

I had the exact same problem and spent a small fortune trying to fix it. At the end of the day it was the MP non adjustable advance in the distributor (sp?) that was causing my issue. I changed to a Mallory unit and solved my overheating problem instantly. The way it was explained to me was if the advance is not adjusted properly it will cause the engine to run hot. My explanantion is elementary but I hope you get the jist...good luck.




Yup...

Re: REBUILT 440 ENGINE overheats - HELP. [Re: MASSMOPAR] #1513439
10/09/13 06:18 PM
10/09/13 06:18 PM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
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Quote:

Quote:

Does the lower hose have a spring in it to keep it from collapsing? It might not collapse without a stat in it but it will when the coolant gets pressurized against the stat.
By the way, just in case, the spring on the thermostat gets installed down. Make sure it's not backwards.




No Collapsing - no spring - no backwards

Thanks




How in the hell do you know when your driving down the road that the lower hose is not collapsing? if it don't have a spring inside the lower hose?. If it doesn't have a spring than that's the part of the problem!!!

Re: REBUILT 440 ENGINE overheats - HELP. [Re: Challenger 1] #1513440
10/09/13 06:24 PM
10/09/13 06:24 PM
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Irving, TX
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Quote:

Quote:

There are no secrets in overheating issues.You can probably diagnose that thing in less than 10 minutes with a temp gun.




Not if it's a tuning problem




You can diagnose that with a temp gun too. The entire cooling system will heat up properly but won't level out. Temp will drop across the radiator and there will be no crazy hot spots on the cooling system but the exhaust manifolds (and heat crossover if used) will be scorching hot.

That's when you start looking at the tune.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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