Engine Blowing up from no apparent reason

[303_Kermit]

So... After 6 moths of enjoying P-47
-One can steep dive, but manual prop pitch control is needed. You may cath FW-190D9 long after dive  
Warning: Manifold raises with the speed during dive, you may destroy your engine. So always manifold down to 42lb. before prolonged dive

-I bought 747 throttle quadrant. To use full potential of P-47 one has to move every lever individually

-A proper sequence is needed to move levers.
1. From 2550 / 42 -> 2700 / 55 : First add RPM -> add Manifold -> check carb.air temp.
2. From 2700 / 55 -> 2700 / 64: Press in water -> check Manifold -> add Manifold -> check Carb.Air.temp 

-Throttling back always in reverted order -> Manifold down -> rpm down

-One can fly above 2700 / 75 on low altitude. In low air temp (below 16°C) i was able to fly 10 minutes like so. After landing you need to repair or change aircraft.

-The higher you fly the bigger ther risk that you exceed carb air temp. It raises with the altitude - so if you checked and set 2700 / 64 at 25.000ft and you see that carb.air.temp. "is barely in its limits" you will surely destroy your engine while further climb to 30.000ft.

I wish you fun and success in P-47. It's great plane

Edited May 28, 2023 by 303_Kermit

[Nealius]

1 hour ago, grafspee said:

If you check temps do you also check carb air temp this one is important as oil temp in P-47 when flying at high power settings.

Carb air was blue. So was oil temp. The only iffy one was cylinder heads pegged at 200. They wouldn't cool off no matter how fast I went or how open the cowl flaps were. I'm guessing I just overstressed the engine from the boost.

[grafspee]

11 hours ago, Nealius said:

Carb air was blue. So was oil temp. The only iffy one was cylinder heads pegged at 200. They wouldn't cool off no matter how fast I went or how open the cowl flaps were. I'm guessing I just overstressed the engine from the boost.

260C is limit for head temp so 200C isn't dangerous, but knock can demolish engine w/o any indication. 

This one is page from P-47 manual, punishment for detonation.