Two turbo questions
- Thread starter tomo pauk
- Start date
Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules
GregP
Major
One of my best friends is Joe Yancey, who builds Allison V-1710's today. The -111 / -113 did, indeed, produce 1,725 HP and can produce more if boosted.
In fact, Joe can and HAS made Allison V-1710 engines that can produce more than 2,500 HP. But in the war, they were not over 1,850 HP in stock form until the G-seies engines that were real performers at 2,200+ HP, but lacked reliability due to teething problems. Today, you can build a reliable Allison 1710 G-series engine but, alas, the market is low ... and nobody seems to want to race one. Joe has a Reno engine configuration that can produce 2,900+ HP to the prop, but no takers.
Too bad, his engines are built right and last a LONG time if run properly. He has several out there flying with over 1,100+ hours on them. Wartime overhaul was 250 - 350 hours, depending on condition.
In fact, Joe can and HAS made Allison V-1710 engines that can produce more than 2,500 HP. But in the war, they were not over 1,850 HP in stock form until the G-seies engines that were real performers at 2,200+ HP, but lacked reliability due to teething problems. Today, you can build a reliable Allison 1710 G-series engine but, alas, the market is low ... and nobody seems to want to race one. Joe has a Reno engine configuration that can produce 2,900+ HP to the prop, but no takers.
Too bad, his engines are built right and last a LONG time if run properly. He has several out there flying with over 1,100+ hours on them. Wartime overhaul was 250 - 350 hours, depending on condition.
Last edited:
wuzak
Captain
According to Whitney, Vees for Victory the P-38L ws rated to 1600hp WER on 100/130 fuel and 1725hp WER at 3200rpm using 150 grade fuel.
GregP
Major
Hi Wuzak,
You are correct and I should have specified WEP.
Most WWII V-2 engines that could produce 1,400+ HP were almost never un at that power unless in combat. They took off, cruised, and landed at greatly reduced pwoer. They typically went to WEP only in combat when really scared.
An Allison V-1710-111 was probably run at take off at 1,100 HP or so, cruised at 750 - 900 HP, and was used at 1,600 - 1,750 HP when scared or trying to pursue a potential victim that was trying desperately to get away. Landing, it was probably run at 450 HP in the pattern unless trying to climb.
In the war, Merlins were run the same ... at greatly reduced pwoer settings unless the power was needed RIGHT NOW. Ditto for raidals, but they were typically cruised at 45 - 55% power instead of 65 - 75%. A Bearcat was usually cruised at under 200 mph unless higher speed was required for the mission.
You are correct and I should have specified WEP.
Most WWII V-2 engines that could produce 1,400+ HP were almost never un at that power unless in combat. They took off, cruised, and landed at greatly reduced pwoer. They typically went to WEP only in combat when really scared.
An Allison V-1710-111 was probably run at take off at 1,100 HP or so, cruised at 750 - 900 HP, and was used at 1,600 - 1,750 HP when scared or trying to pursue a potential victim that was trying desperately to get away. Landing, it was probably run at 450 HP in the pattern unless trying to climb.
In the war, Merlins were run the same ... at greatly reduced pwoer settings unless the power was needed RIGHT NOW. Ditto for raidals, but they were typically cruised at 45 - 55% power instead of 65 - 75%. A Bearcat was usually cruised at under 200 mph unless higher speed was required for the mission.
- Thread starter
- #5
- Thread starter
- #6
GregP
Major
As to the P-38 having ADI, the answer is yes. The P-38K had water-alcohol ADI that took the F-series -75 engines from 1,425HP in miitary power to 1,600 HP at War Emergency Power (WEP).
Most of the G-series engines also had ADI. If you look up the Allison and see a power level as "wet," that means ADI injection. "Dry" means no ADI.
Most of the G-series engines also had ADI. If you look up the Allison and see a power level as "wet," that means ADI injection. "Dry" means no ADI.
