WW2 interceptor with 4 engines ?

What all of these proposals miss is an actual driver to make it happen .

For example ;

Just as the Bristol Beaufighter reached squadron service the Factory making the Hercules engine was hit by a raid and all production drawings and much of the factory was destroyed .
In desperation the Bristol Engineers built a franken engine with 2 Bristol Pegasus radials in one cowling . Initially the single propeller was seen as the easiest option however reality was it developed vibration . In an effort to fix this problem a contra rotating propeller was fitted to each engine assembly . The new franken engine was 40% longer and resulted in a change in nacelle design to bring the CG back to an appropriate point . The new engine produced 1800 hp at sea level and 1600 hp on a continuous climb setting . The new contra rotating propeller also improved engine out performance . The extra 400 hp improved all aspects of flight performance .

Was that using standard Pegasus components or did it need modified components?

What was the weight of the engine?
 
I don't know if this is in the spirit of the OP, but how about a plane with four rocket engines?

For Japan, I'll suggest a four-engine plane with heavy guns, designed to engage B-29s from outside their effective gun range.
 
Ar234-24.jpg

There was plans for advance four engine combat aircraft Arado Ar 234 C-3
Planned with four Jet-engine Junkers Jumo 004B-1
Armed with two MG 151 and two MK 108 firing upward.
Arado Ar 234 P-5 Version would had additional Radar system FuG 240-4 Bremen install on top of aircraft.
arado-234p-5-modell.jpg


Oh my. With 4 of those shortlived engines?!? So, basically one engine dies on most sorties, eh?
 
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