Specifications of 50 famous racing engines up to 1994

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
hollus
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Re: Specifications of 50 famous racing engines up to 1994

Post by hollus » Sun Feb 10, 2019 5:29 pm

1957 Vanwall V254 2.5-litre four

In 1956 the four was installed in a new Vanwall with chassis by Colin Chapman and aerodynamics by Frank Costin, by 1957 it was a winning combination. Vanwall built 7 in all 2.5-litre engines designated V254.
Composed of high-topped, deep-walled crankcase in RR53 aluminum alloy into which individual cast-iron cylinders were deeply spigoted, a water jacket and a shallow cylinder head in RR50 alloy with separate camboxes and exposed valve springs, the whole held together by 10 long high-tensile-steel tie bolts from the head to the main bearing caps.
Nestling inside the tie-bolts and topped and bottomed by rubber sealing rings, the cast RR50 aluminum water jacket steadied and sealed the whole assembly. A structural role was played by the cylinders, which fitted into a radiused countersink in the head. Skirts of the crankcase extended bellow the crankshaft center line. A deep finned sump capped the bottom.
BP oil was used. An EN19 forged 5 main bearing crankshaft was used. EN24 nickel-steel forged con-rods had I-section shanks, were machined all-over and polished. RR59 aluminum alloy piston with full skirt were forged by Hepworth and Grandage, had 2 Dykes compression rings and 1 oil control ring. Cooling oil jets were used to cool the underside of the piston crown.
A compact cylinder head with hot water extracted from it by a manifold between the cams. A water pump mounted low at front of crankcase driven by an extension of the oil pressure pump input shaft. Symmetrically inclined valves at an included angle of 60 degrees and seating on bronze-alloy inserts. Exhaust valve guides were finned and in direct contact with water.
All gears drive to cams were housed in a magnesium casting bolted to block and head. All spur gears ran with ball bearing with 1 idler rotating a single BTH magneto. 2 KLG plugs per cylinder were used. A 3 pinion scavenge pump was used. Each cam rotated in its own case.
Cylindrical hollow tappets sliding in bronze guides. 2 hairpin springs per valve placed out in open air. Bosch fuel injection pump with injector in inlet port just upstream of valve seat injecting at 650psi. Amal carburetor bodies and their control system served as slide throttles.

Specifications:

Cylinders l4.
Bore 96mm.
Stroke 86mm.
Stroke/bore ratio 0.90:1.
Capacity 2490cc.
Compression ratio 12.5:1.
Con-rod length 163.5mm.
Rod/crank radius ratio 3.8:1.
Main bearing journal 70mm.
Rod journal 51mm.
Inlet valve 53mm.
Exhaust valve 45mm.
Inlet opens 70 degrees BTDC.
Inlet closes 90 degrees ABDC.
Exhaust opens 75 degrees BBDC.
Exhaust closes 49 degrees ATDC.
Valves overlap 119 degrees.
Inlet pressure 1Atm.
Engine weight 163kg.
Peak power 285BHP@7200RPM.
Piston speed corrected 21.5m/s.
114.5BHP per litre.
0.57kg per BHP.
...not because they are easy, but because they are hard!

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Re: Specifications of 50 famous racing engines up to 1994

Post by hollus » Sun Feb 10, 2019 5:41 pm

...not because they are easy, but because they are hard!

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Re: Specifications of 50 famous racing engines up to 1994

Post by hollus » Tue Feb 12, 2019 10:10 pm

1958 Borgward RS 1.5-litre four

1958 Borgward RS 1.5-litre four: This was the fuel-injected 16-valve four engine that seriously started troubling Porsche 1-1/2 litre sports car racing and hill-climbs categories; in 1959 it was used in F2 in a Cooper chassis. Stirling Moss won the British F2 championship in a Cooper-Borgward. The RS four was the work of designer Karl Ludwig Brandt, a pre-war veteran of BMW’s experimental department.
A forged 5 main bearing crankshaft running in trimetal Glyco bearing shells. Forged I-section shanks con-rods that were polished to a chrome-like finish. A Silumin block/crankcase casting with extended skirts well below crankshaft center line. The main bearing caps were located laterally by pins to crankcase walls. Cylinder head studs penetrated the block to do double duty as the main bearings cap studs.
Except for connection to injection pump, every oil line was drilled in place. A 10-litre dry-sump system with shallow cast oil pan slopping to a central pick-up connected by a cast-in piping to scavenge pump housed in lowest part of cam-drive cover. Scavenge and pressure pumps were placed at right and left of cam-drive. Both pumps rotated at 0.6 engine speed by spur gears at crank nose.
Centrifugally cast iron cylinder liners were sunk wet into the block, very tightly at the bottom and sealed by 2 O-rings seals at the top of liner. 8 ‘feet’ radiated out to rest on a ledge within the block, like JANO’s Lancia D50 and Dino Ferrari construction.
Camshaft drive was by a 2-stage double roller drive at front of block, with adjustable idler sprockets. Camshafts and sprockets were joined by a coupling of 2 conicaly tapered rings which when pressed together by a central bolt expanded to lock the end of the cam to the sprocket. Infinite variation of valve timing was therefore possible.
Exhaust valve closing and inlet valve opening points were equally disposed at 42 degrees from TDC, giving 84 degrees of overlap.
Steel camshafts ran directly in bores through the removable cam cases. A Bosch racing distributor was driven from rear of inlet cam. Cam lobes contacted cast-iron cup-type tappets. Symmetrically inclined at 32 degrees from center line were the 4 valves per cylinder. 2 spark plugs per cylinder were used. Injector nozzle sprayed through a 10mm hole.
Mahle forged aluminum alloy pistons with the crown specially anodized to a deep graphite grey, had 2 Dykes compression rings above a single oil ring. Fuel injection by Bosch 4 plunger pump was at a pressure of 1000-1100psi.

Specifications:

Cylinders l4.
Bore 80mm.
Stroke 74mm.
Stroke/bore ratio 0.93:1.
Capacity 1488cc.
Compression ratio 10.2:1.
Con-rod length 140mm.
Rod/crank radius ratio 3.8:1.
Main bearing journal 60mm.
Rod journal 50mm.
Inlet valve 33mm.
Exhaust valve 30mm.
Valve overlap at TDC 84 degrees.
Inlet valves gas-velocity at 7500RPM 208 feet per second.
Inlet pressure 1Atm.
Engine weight 128kg.
Peak power 165BHP@7500RPM.
Piston speed corrected 18.9m/s.
110BHP per litre.
0.78kg per BHP.
...not because they are easy, but because they are hard!

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Re: Specifications of 50 famous racing engines up to 1994

Post by hollus » Tue Feb 12, 2019 10:25 pm

Some links about the 1958 Borgward RS 1.5-litre four:

Image

Image

Image

Image
...not because they are easy, but because they are hard!

Tommy Cookers
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Re: Specifications of 50 famous racing engines up to 1994

Post by Tommy Cookers » Wed Feb 13, 2019 3:12 pm

the sources linked above are riddled with mistakes

the Borgward engine didn't contribute to any awards in F1 as F1 was 2.5 litre until 1961
it (Borgward-engined Cooper) was quite competitive in F2 against eg Cooper-Climax cars but not in mixed F1/F2 races
in 1959 a C-B finished 10th (zero points) in the British GP - its only F1 championship race
Moss finished 2nd in the F2 C-B at the 1960 S.Africa GP (a non-championship F.libre race)
in the 1961 etc 1.5 litre F1 only the Lotus 18-Borgward of Kurt Kuhnke entered 3 1963 non-championship races without result

Borgward was bullied into liquidation by another car maker (it paid its creditors in full)
Borgward touring cars were quite successful in racing eg 'Bill' Blydenstein

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Re: Specifications of 50 famous racing engines up to 1994

Post by hollus » Wed Feb 13, 2019 5:03 pm

Tommy Cookers wrote:
Wed Feb 13, 2019 3:12 pm
the sources linked above are riddled with mistakes
Well, thanks for setting the record straight.
Stivala: Your call, we could remove the links and leave the pictures only. Do you have a better link, Tommy Cookers?

Edit: The offending link eventually got removed. But if anyone is interested, it is the same page where the third picture came from.
...not because they are easy, but because they are hard!

Tommy Cookers
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Re: Specifications of 50 famous racing engines up to 1994

Post by Tommy Cookers » Wed Feb 13, 2019 9:53 pm

sorry, with the weird way I set up of this old computer I can't post links

this book will help
1 1/2 litre Grand Prix racing 'Low power High Tech' by Mark Whitelock
and maybe
'Tony Robinson - the biography of a racing mechanic' by Ian Wagstaff
T.R. was in the BRP team that were briefly the users of the Borgward engine in F2 Coopers
(I haven't checked Borgward's sportscar use - only the false claim that Borgward contributed to Cooper's 1959 F1 makers title)

and the usual results archive sources
(eg I thought Paul Frere won the 1960 S Africa GP in a C-B but archives say he used a Climax engine)

saviour stivala
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Re: Specifications of 50 famous racing engines up to 1994

Post by saviour stivala » Wed Feb 13, 2019 10:41 pm

hollus wrote:
Wed Feb 13, 2019 5:03 pm
Tommy Cookers wrote:
Wed Feb 13, 2019 3:12 pm
the sources linked above are riddled with mistakes
Well, thanks for setting the record straight.
Stivala: Your call, we could remove the links and leave the pictures only. Do you have a better link, Tommy Cookers?
Yes remove the links but leave the pictures, those Borgwad engine picture are authentic and Hard to find . Some of the 50 most famous engines were not famous for their success in F1, the Borgward was one of them.