Kleykamp
Jedi Trainee
Offline
History is that I discovered a cracked block on TR3 engine that was a fairly good running engine. I bought a used TR4 short block. I know it's fool hardy to buy a used engine and not rebuild it , but what can I say, I gambled on it,because it looked pretty good,i.e cylinder walls,timing chain/tensioner,etc. I transferred all ancillary parts and head to the TR 4 block and shoved it in the car. Started with the first push of the button in a cloud of blue smoke. I expected smoke from a engine that had been sitting for who knows how long. The heavy smoke cleared after a few starts over the next couple of days, each time with less smoking. Now the engine idles with no smoking. Although,When I rev the engine and hold it around 2000 or more rpms blue smoke shows up from the exhaust. Not a smoke screen but more than I have experienced in other 3's and 4's. I checked compression, engine warmed to running temp, thottle full open, 5 cranks each cylinder and got ( 1 = 150, 2 = 155, 3 = 155, 4 = 155 ) That seems pretty good to me, right? Now for the smoke. Carbs have had seals installed twice trying to stop leaking from the bottom. I discovered that the front carb piston does not hit bottom which would result in a very rich mixture. Could the rich fuel be floating enough oil off the cylinder walls to create oil burning in the chamber? I have a new set of the cork jet seals which I am going to put in and re-center the jets. Any thing else I should be looking at? I certainly don't see giving up on this engine. Once warmed up it is running very well except for the smoke. Appreciate the input. ( Pat, there are the compression numbers you were curious about. )