ENGINE OVERHEATING
#1
Junior Member
SHOW GUEST
Thread Starter
Join Date: Sep 2003
Posts: 3
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
#2
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.
#3
Senior Member
RACING JUNKIE
Join Date: Mar 2006
Location: EUGENE,OR.
Posts: 3,391
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!!
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!!