 Wizard
					
					
						Wizard
					
					
                                        
					
					
						JayTee
Nullus Anxietus
Cancer is gender blind.
2000 D2 TD5 Auto: Tins
1994 D1 300TDi Manual: Dave
1980 SIII Petrol Tray: Doris
OKApotamus #74
Nanocom, D2 TD5 only.
He certainly did.
55-Chevy-v12.jpg d1e2c917-f34b-4d83-8c16-5310f3d9321f-xlg.jpg
Sorry to be a spoilsport, but I don't think that Rolls Royce made Allison engines!
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
 ForumSage
					
					
						ForumSage
					
					
                                        
					
					
						Correct me if RRong, but the Allison v12 was essentially a Merlin built by Allison, using 'Merican Mass-production methods, not Pommy-Precision.... eg, any piston would fit any bore of any engine.... nor did we need to worry about keeping said pistons out of *sunlight - on the workbench - during assembley...
But RR didn't tell the Yanks 'Everything'.... Heard about a shaft that Allison kept snapping.... think it was a supercharger drive but don't quote me on that.... Merlins used a cheap softer steel which tolerated the unusual forces..... Allison engineers specified a more modern, better alloy...Think it took them a long while to figure that one out....
* Myth or Fact, ? story is, a piston left on the bench in sunlight for minutes,,, would distort enough to make it impossible to fit... - such was the exactitude of the piston/bore matching. And again, only in its's 'home' bore.
Other interesting Merlin stuff can be had in this book by Len Deighton
Fighter By Len Deighton | Used | 9780586046111 | World of Books
Where he also debunks - with figures - the belief that a Spitfire could out-turn a Me 109. Nope, it 'would' turn tighter... because the German would not violate specifications... the usually more mature Englander regarded them as rules to be modified, like his machine's dihedral. ....
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