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Wet Spreaders
Super Anarchist
No clue. Dad has Alzheimer’s and I never knew. 2500cc maybe?
oldsurfer
Member
Advanced design for it's time. Never knew of a OHV 2547cc hemi!
V 8 iron block, water cooled, OHV, bore 76 mm x stroke 70 mm, capacity 2547 cc. Single central camshaft operated valves through short pushrods with double heavy-duty valve springs. Aluminium alloy hemispherical cylinder heads. Stiff 5 main bearing crankshaft, dynamically balanced. Compression ratio 8.2:1. Twin SU carburettors. bhp 140 @ 5800 rpm. Max Torque 155 lb⋅ft (210 N⋅m) at 3600 rpm. SU electric fuel pump.
V 8 iron block, water cooled, OHV, bore 76 mm x stroke 70 mm, capacity 2547 cc. Single central camshaft operated valves through short pushrods with double heavy-duty valve springs. Aluminium alloy hemispherical cylinder heads. Stiff 5 main bearing crankshaft, dynamically balanced. Compression ratio 8.2:1. Twin SU carburettors. bhp 140 @ 5800 rpm. Max Torque 155 lb⋅ft (210 N⋅m) at 3600 rpm. SU electric fuel pump.
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SloopJonB
Super Anarchist
That baby hemi was so cool. Would make a great hot rod engine, especially with a better looking induction setup.
I never understood why they had such a low C/R - the whole point of the original hemi's was that they were insensitive to octane.
I never understood why they had such a low C/R - the whole point of the original hemi's was that they were insensitive to octane.
bmiller
Super Anarchist
The good old corollary:
All fires go out, all bleeding stops, eventually.
warbird
Super Anarchist
The point of the hemi was to get bigger valves to feed a fixed bore. Canting the valves allowed larger valves (more area, more flow) for a given bore. A low C/R (flat top piston) in a Hemi mean a large volume with minimized surface area to lose enrgy to heat. That is reasonable and probably is tolerant of lower octane rated fuels. . However, to up torque you need to up C/R. That means a domed piston which makes the combustion chamber resemble a soup bowl, lots of surface area and little volume. At ignition the flame front need to travel a long relative distance and detonation at the leading edge of the flame front was a very real problem without high octane fuel.
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Point Break
Super Anarchist
No…..just no…….
ShortForBob
Super Anarchist
Lake Erie. Christmas 2023
