ENGINE OVERHEATING

Old 07-31-2008, 07:36 PM
  #1  
6970nova
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Sep 2003
Posts: 3
Default ENGINE OVERHEATING

I HAVE A327 30 OVER WITH ALUMINUM HEADS RUNS FOR 10 MIN. AND SHOOTS UP TO 210 DEG BEFORE I SHUT IT DOWN IT HAS A HIGH FLOW W/PUMP A 3 ROW RADIATOR A FLEX FAN AND A FULL SHROUD WITH OR W/OUT A 160 DEG STAT TIMING IS 40 DEG IM LEANING TWARDS A HEAD GASKET LET ME KNOW WHAT YOU THINK THANKS BOB
6970nova is offline  
Old 08-01-2008, 04:11 PM
  #2  
fla1976
Senior Member
RACING JUNKIE
 
fla1976's Avatar
 
Join Date: Aug 2007
Posts: 1,534
Default Overheating

A leak test will tell you if it is a head gasket. Pull the plugs and read them as this will also tell. Could be as simple as a bad thermostat or lack of one. Without a thermostat the water could be flowing too quickly and does not dissipate enough heat through the radiator.
fla1976 is offline  
Old 08-01-2008, 04:28 PM
  #3  
Scooterz
Senior Member
RACING JUNKIE
 
Join Date: Mar 2006
Location: EUGENE,OR.
Posts: 3,408
Default

Had that issue myself... all in all, a process of elimination has to be done.
A few questions to narrow it down more... we can help better to know a few things first.

1. Anything new or changed in coooling system lately/reciently?
2.Any sign of coolant in oil or VS?
3. It does this 10 minute heat up with or without 160 thermostat? is that right? Has there been a leakdown or cyclinder pressure test?

4. Water pump: is it new? pushing coolant to fast? Electric or man? If electric, does it have a sender/relay/fuse failure?
5. What kind of fan... distance between it & rad?
6. Motor- is it newer/fresh install... hows the oil pressure? How about smoke/color? any white smoke?

7. Radiator... I think a 3 core is ok, 4 is better, but if one core has been comprimised, it can seriously cause blockage issues. Should do a bench flow test on the radiator alone... it could simply be blocked from coolant breakdown, long term corrosion etc... Do you have any external coolers (oil,etc..) mounted to the Radiator?

Sorry for the 20 questions, but 10 minutes or less means something is seriously comprimised & it is hard to say w/o knowing a few more things. Good luck!!
Scooterz is offline  
Old 09-19-2008, 04:24 PM
  #4  
alexu
Junior Member
APPRENTICE
 
Join Date: Jun 2008
Location: rock hill sc, 29730
Posts: 15
Default overheating 327

I'd back the timing back to around 32-36, see if that helps

alexu
alexu is offline  
Old 09-19-2008, 11:28 PM
  #5  
gimmemud
Senior Member
MASTER BUILDER
 
Join Date: Apr 2006
Location: Ms.
Posts: 191
Default

I agree, back the timing down some and also take a look at the plugs, a lean condition will make one get hot quick.
gimmemud is offline  
Old 09-20-2008, 04:08 PM
  #6  
dparker
Senior Member
RACING JUNKIE
 
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
Default

Check your gauge just incase. If its a electritric gauge some gauges aren't compatable with different sensers.
An intake leak will also cause it to heat up to fast.
dparker is offline  
Old 10-03-2008, 02:15 AM
  #7  
ashbros
Senior Member
RACING JUNKIE
 
Join Date: Nov 2004
Location: St. Louis, Missouri
Posts: 664
Default

I agree guys back down the timing, check plugs, perform pressure test and check radiator to see if it may be vapor locking.
ashbros is offline  
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service