Re: Is it time to give up?
Posted: Mon Jul 02, 2012 5:00 pm
Eishhhh!
I understand your problem. Here is what I have managed to find out while I am battling some of the same problems. The forum is too limited to relate the entire saga of my experience with "mechanics" and "experts", so here is the short version.
After 4 thermostats we found one that worked (From the agents no less!)This did not solve the overheating problem, so the sleuthing commenced. The thermostat on a 2,8 has a valve cover attached, which, after opening of the thermostat, closes a by-pass valve from the head. If the by-pass doesn't close properly, the water doesn't flow through the radiator correctly and will continue to circulate around the head, causing eventual over-heating. The specs of your thermostat should be:
76.5 deg ±2 deg 90 deg full open 8.5mm travel
The agents actually supplied me with the 82 deg thermostat that I think is for the Colt engines. To check if the circulation is actually happening is painful. Feel the temperature of the swage nipple below the hose of the thermostat cover housing. If not as unbearably hot as the thermostat cover housing, circulation is impaired and full flow is not reaching the radiator. The rubber gasket around the rim of the thermostat is imperative and must not be removed, as some clever guys did with mine. It causes the thermostat to move and the by-pass valve will not close. Apply a little bit of Wynns Gasket sealer to the rubber on installation to "bed" the thermostat before closing up the cover, otherwise the thermostat may slip down and get pinched by the cover. I am now ready to start mine up after a new radiator, visco clutch,fan, thermostat and -cover. Also check your radiator cowling. There is a section that can be removed in order to take it out without removing the radiator. Some guys dont replace it and this may affect cooling. Although the causes in your instance may be different, this seems to be a major problem that directly affects the cylinder head, of which I have replaced at least three.
(Show me the problem and I'll show you the guy that worked on it last!!)
Our local agent is Union Motors, better known as Onion Motors because they make your eyes water everytime you deal with them and they seem to be 30% more expensive than other agents. Some contacts:
Mitsubishi Motors Brooklyn 012 424 7600 Mandla
Mitsubishi Midrand 011 554 2332 Hornest
These guys have helped a lot and the prices seem fair.
Cheers,
TOPROB
083 227 3337
I understand your problem. Here is what I have managed to find out while I am battling some of the same problems. The forum is too limited to relate the entire saga of my experience with "mechanics" and "experts", so here is the short version.
After 4 thermostats we found one that worked (From the agents no less!)This did not solve the overheating problem, so the sleuthing commenced. The thermostat on a 2,8 has a valve cover attached, which, after opening of the thermostat, closes a by-pass valve from the head. If the by-pass doesn't close properly, the water doesn't flow through the radiator correctly and will continue to circulate around the head, causing eventual over-heating. The specs of your thermostat should be:
76.5 deg ±2 deg 90 deg full open 8.5mm travel
The agents actually supplied me with the 82 deg thermostat that I think is for the Colt engines. To check if the circulation is actually happening is painful. Feel the temperature of the swage nipple below the hose of the thermostat cover housing. If not as unbearably hot as the thermostat cover housing, circulation is impaired and full flow is not reaching the radiator. The rubber gasket around the rim of the thermostat is imperative and must not be removed, as some clever guys did with mine. It causes the thermostat to move and the by-pass valve will not close. Apply a little bit of Wynns Gasket sealer to the rubber on installation to "bed" the thermostat before closing up the cover, otherwise the thermostat may slip down and get pinched by the cover. I am now ready to start mine up after a new radiator, visco clutch,fan, thermostat and -cover. Also check your radiator cowling. There is a section that can be removed in order to take it out without removing the radiator. Some guys dont replace it and this may affect cooling. Although the causes in your instance may be different, this seems to be a major problem that directly affects the cylinder head, of which I have replaced at least three.
(Show me the problem and I'll show you the guy that worked on it last!!)
Our local agent is Union Motors, better known as Onion Motors because they make your eyes water everytime you deal with them and they seem to be 30% more expensive than other agents. Some contacts:
Mitsubishi Motors Brooklyn 012 424 7600 Mandla
Mitsubishi Midrand 011 554 2332 Hornest
These guys have helped a lot and the prices seem fair.
Cheers,
TOPROB
083 227 3337