TE20 Overheating

• Byerley Park Stables

Rainer, Has this overheating occurred since 1995 when overhauled, or is it recent? If it is as you stated, completely in time and have checked as other posts, then the head gasket could be leaking or the head is cracked, especially if the overheating has occurred for sometime. Is there any "crud" in the radiator? How about the waterpump and was it renewed at OH time? You stated a new block was used, but what about the head? If you used the old head did it get Magna-fluxed for cracks? Just some more questions for troubleshooting. (You have a good looking web site, and how is the weather in So Africa?) Good luck on your overheating problem.

Timing or mixture. Likely ignition timing excessively retarted. Is the centrifugal advance working or stuck? Lean mixture will also cause it to run very hot. Run it richer by opening up the main and idle screws on the carburetor. I cracked the manifold on my MF-135 when the capacitor in the distributor went bad. That upset running too. There's an off chance the valves are timed wrong because the cam shaft gear wasn't perfectly timed to the crankshaft gear.

By the way, you say you're not running on kerosene, does this mean it is an petrol/kerosene engine?, if so it is a TED 20

Bill

: : Help!! I have a 1951 TE20, engine was completely rebuilt in 1995 with a new block. Problem is it overheats so badly I cooked the head gasket 2 weeks ago!! Radiator is new, water pump also new, thermostat is out - seems to have relieved some of the problem as it now takes 15 minutes before it cooks, whereas before it would cook within approx 7 minutes. Timing, valve clearances etc. are all spot on as per the manual. It is running on gasoline only, not kerosene. The engine runs so ot that the exhaust manifold and first 3 inches of the downpipe run red hot!!! It is used on a daily basis at a horse riding school, so really causes a problem when "downtime" is necessary. I have also installed an electric blower fan over and above the standard driven fan, all to no avail!! Any info or assistance would be greatly appreciated!

: Timing or mixture. Likely ignition timing excessively retarted. Is the centrifugal advance working or stuck? Lean mixture will also cause it to run very hot. Run it richer by opening up the main and idle screws on the carburetor. I cracked the manifold on my MF-135 when the capacitor in the distributor went bad. That upset running too. There's an off chance the valves are timed wrong because the cam shaft gear wasn't perfectly timed to the crankshaft gear.

: By the way, you say you're not running on kerosene, does this mean it is an petrol/kerosene engine?, if so it is a TED 20

: : Bill

: : : : Help!! I have a 1951 TE20, engine was completely rebuilt in 1995 with a new block. Problem is it overheats so badly I cooked the head gasket 2 weeks ago!! Radiator is new, water pump also new, thermostat is out - seems to have relieved some of the problem as it now takes 15 minutes before it cooks, whereas before it would cook within approx 7 minutes. Timing, valve clearances etc. are all spot on as per the manual. It is running on gasoline only, not kerosene. The engine runs so ot that the exhaust manifold and first 3 inches of the downpipe run red hot!!! It is used on a daily basis at a horse riding school, so really causes a problem when "downtime" is necessary. I have also installed an electric blower fan over and above the standard driven fan, all to no avail!! Any info or assistance would be greatly appreciated!

: : Timing or mixture. Likely ignition timing excessively retarted. Is the centrifugal advance working or stuck? Lean mixture will also cause it to run very hot. Run it richer by opening up the main and idle screws on the carburetor. I cracked the manifold on my MF-135 when the capacitor in the distributor went bad. That upset running too. There's an off chance the valves are timed wrong because the cam shaft gear wasn't perfectly timed to the crankshaft gear.

• Byerley Park Stables

: : By the way, you say you're not running on kerosene, does this mean it is an petrol/kerosene engine?, if so it is a TED 20

: : : : Bill

An engine with retarded ignition timing runs very smoothly. Starts superbly, because there's no combustion while on the compression stroke, but that engine runs ineffeciently and the fire is still burning when the charge is transfered to the exhaust manifold to make it glow and its very hard on exhaust valves too. They don't last long glowing brightly.
: : : : : : : Help!! I have a 1951 TE20, engine was completely rebuilt in 1995 with a new block. Problem is it overheats so badly I cooked the head gasket 2 weeks ago!! Radiator is new, water pump also new, thermostat is out - seems to have relieved some of the problem as it now takes 15 minutes before it cooks, whereas before it would cook within approx 7 minutes. Timing, valve clearances etc. are all spot on as per the manual. It is running on gasoline only, not kerosene. The engine runs so ot that the exhaust manifold and first 3 inches of the downpipe run red hot!!! It is used on a daily basis at a horse riding school, so really causes a problem when "downtime" is necessary. I have also installed an electric blower fan over and above the standard driven fan, all to no avail!! Any info or assistance would be greatly appreciated!

: : : Timing or mixture. Likely ignition timing excessively retarted. Is the centrifugal advance working or stuck? Lean mixture will also cause it to run very hot. Run it richer by opening up the main and idle screws on the carburetor. I cracked the manifold on my MF-135 when the capacitor in the distributor went bad. That upset running too. There's an off chance the valves are timed wrong because the cam shaft gear wasn't perfectly timed to the crankshaft gear.