early heads on 8BA block??
- Thread starter hotrodcbx
- Start date
Why do you need to de-carbon? Is your engine a smokey oil burner? If the rings are good, you shouldn't have a carbon problem. Since gas is now unleaded, a major source of carbon has been eliminated.
frnkeore
Well-known member
You an de-carbonize the combustion chamber, by running water threw the carb, while the engine runs.
Use a small coke bottle and hold your thumb over the end. Rev the engine to about 1500, start the water and open the throttle more, when the rpm drops. You can let it rev to ~2500. Regulate the water and throttle to do that. After the water goes threw, let it clear itself and return to 1500, for a few seconds and your done.
It will not hurt the engine. I learned this from my mechanic, dad when I was 12 (1957).
Th super heated steam, does all the work.
Use a small coke bottle and hold your thumb over the end. Rev the engine to about 1500, start the water and open the throttle more, when the rpm drops. You can let it rev to ~2500. Regulate the water and throttle to do that. After the water goes threw, let it clear itself and return to 1500, for a few seconds and your done.
It will not hurt the engine. I learned this from my mechanic, dad when I was 12 (1957).
Th super heated steam, does all the work.
Thanks for the tips on carbon removal guys. Actually I have about 75,000 miles on this engine and after a compression check all cylinders were 140 except for cylinders 1 & 2 which were 115. I'm thinking there could be a gasket leak between the cylinders. I also notice more white vapor coming out the right exhaust, possibly coolant as I have had to add a little from time to time. I will be doing a leakdown test to see if I hear any valve or cylinder leakage. I will be replacing gaskets with Best Graphtite. I was going to use Cometic but they are quite expensive. When I last talked to Mark Kirby before his unfortunate passing Cometic were his choice.