sea lion engine

The Sealion Ref: Sealion

The Sealion engine was released in 1959, coinciding with the launch of BMC's Mini and the opening of the UK's first motorway, the M1. The Sealion sports a gear driven overhead cam; an expensive performance feature for 1959; limited to manufacturers such as Jaguar, Aston Martin and Mercedes Benz. Whilst adding to the complexity of the valve train, the Sealion's SOHC arrangement offers more efficient breathing with higher compression ratios. This is a high performance engine and to many it is also Westbury's most refined and ambitious project.

The Sealion has a bore x stroke of Ø7/8" x ¾" providing a swept displacement of 29.6cc (1.8 cu.in.). The flat faced cylinder head seats 8 vertical valves, operated by short rockers from an offset, 8-lobe camshaft. The camshaft is supported by 3 bearings within a separately mounted housing, the base of which closes off the water jacket. Westbury calls for a rocker cover formed from 1/16" sheet but many constructors substitute a Perspex/Plexiglas cover. The mechanism is simply too attractive to be hidden away!
The Sealion's crankshaft runs in 3 main bearings; 2 outboard ball races and a central spilt-shell leaded bronze bush. Connecting rods are machined from solid Duralumin and it is suggested that the big end cap bolts are security-wired. The Sealion engine includes an oil and water pump; a total of 10 gears make up the drives to the camshaft and auxiliaries! A cast oil trough sits just out of reach of the crank, providing a pool for the big ends to dip into and a baffle to keep the sump level steady enough to prevent cavitation of the oil pump. The material kit includes a moulded cap for the distributor which is driven directly from the cam.

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Tags:

• lathe
• model
• engine
• petrol

[mangogrooveworkshop]

This is a kit you can buy but Im looking at the V8 model engine when I get my CNC mill and clean up some of the slop in my 45 year old myford.

It is truly amazing what you can achieve in this small scale.

[ldmasetto]

Amazing..Do you sell it? How much is? How did you do this project? Do you have it in the auto cad, solid works,

pro engineer or something? If yes, can you provide me? I'm wanting to

build a miniature car that is just like a real car, I hope you help me. Thank you.

[TheRebelman95]

whats it for?

[krazykayaker82]

how fast does this thing push?

and what about rpm's when idling?

[Bamchucknorris]

@Blazen8gsx 4 in line

[hanghoodiescum]

i have the same engine any idea what these sell for cheers

[Axbent]

how much will it rev, what the idle rpm? what fuel?

[randomguy9898]

woah! thats cool! i wish i had one :(

[superfunnyman123]

is the kit fully machined? what web site?

[thedomonator]

How much?!

[taint123456]

nice, check out roberts model v6, all his own design, built from scratch.