Hello everyone.
Here is the skinny. I'm getting some type of load noise out of the right side of the engine. It only comes up anything above 2500 to 3000 rpms under load only. The carbs are dead even no chain slap at idle. It reminds me of a gas engine that would be driving a water pressure pump or something sounds like that. ((Bdddtt)) if you can say this word (real fast) it sounds like that. But a continues sound under load above 25 to 3 k. Things I've done 1, I removed the carburetors and checked cleaned the CV slides. 2, I backed the timing back close to stock and this seams to quiet it some right away. 3, I balanced the rack no real change. 4, When the engine levels out (power curve load) it's there but fairly quiet. I can hear it across the engine but more so on the right. 5, When the engines hot (fan cycling) I hear it only under load. Mind you this is not a rod knocking. I'm thinking more of valve noise valve slapping or something. Now when I got this engine the back side of the valves were rusted and it did smoke aA LOT. Idid the poor boy cleaning. and it stopped smoking. I was told to do a mix of things or just run 100 LL fuel 2 tanks any help on this cause it's driving me nutz..! I am, going to pull the heads or rebuild a set I have off now.. Thanks in advance.. The only upgrade I've done is the coils
Here is the skinny. I'm getting some type of load noise out of the right side of the engine. It only comes up anything above 2500 to 3000 rpms under load only. The carbs are dead even no chain slap at idle. It reminds me of a gas engine that would be driving a water pressure pump or something sounds like that. ((Bdddtt)) if you can say this word (real fast) it sounds like that. But a continues sound under load above 25 to 3 k. Things I've done 1, I removed the carburetors and checked cleaned the CV slides. 2, I backed the timing back close to stock and this seams to quiet it some right away. 3, I balanced the rack no real change. 4, When the engine levels out (power curve load) it's there but fairly quiet. I can hear it across the engine but more so on the right. 5, When the engines hot (fan cycling) I hear it only under load. Mind you this is not a rod knocking. I'm thinking more of valve noise valve slapping or something. Now when I got this engine the back side of the valves were rusted and it did smoke aA LOT. Idid the poor boy cleaning. and it stopped smoking. I was told to do a mix of things or just run 100 LL fuel 2 tanks any help on this cause it's driving me nutz..! I am, going to pull the heads or rebuild a set I have off now.. Thanks in advance.. The only upgrade I've done is the coils