Engine overheating - 05/18/17 02:49 PM
I have a 1930 Chevrolet wich has had its original engine swaped for a 1929 block. I believe the head is from a 1930. I drove the car last summer for quite some time and it always showed a tendency to run a bit hot. The waterpump was leaking so this spring I changed it for new one from fillingstation (the modern type with bearings). I also changed the baffle plate taking good care to have an tight fit between the pump wheel and the plate.
After this it still runs hot. Infact I get the feeling it runs even hotter than before. Ive checked the timing, the radiator shows good flow - so Im suspecting rust buildup in the block or a clogged water jacket. Right now Im giving it the citric acid treatment. Having flushed it out a few times during the week It doesnt indicate massive amounts of rust in the water though.
So my main question is. Are there any differences in the placement of waterjackets in the heads/blocks 1929-31? When I look down through the theromstat housing I see two corroded spots in the block matching open jackets in the head and gasket. One on the right side and one on the left. Just like there two undrilled jackets in the block.
After this it still runs hot. Infact I get the feeling it runs even hotter than before. Ive checked the timing, the radiator shows good flow - so Im suspecting rust buildup in the block or a clogged water jacket. Right now Im giving it the citric acid treatment. Having flushed it out a few times during the week It doesnt indicate massive amounts of rust in the water though.
So my main question is. Are there any differences in the placement of waterjackets in the heads/blocks 1929-31? When I look down through the theromstat housing I see two corroded spots in the block matching open jackets in the head and gasket. One on the right side and one on the left. Just like there two undrilled jackets in the block.