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I bought a mothballed 10103 Giulietta Spider this weekend and included the purchase was a separate "racing" engine AR1315*31399 which the previous owner acquired with the car 31 years ago. History is unknown as the car I purchased never raced. It turns over but I don't know the actual internal condition. Any help in identifying what this is and suggestions as to what I should do with are welcome.
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Based on the header design & lightened flywheel, this looks like a fairly serious race engine. No generator/alternator means the ignition ran from a separate battery to eliminate any parasitic drag. Others will provide more information based on the serial number and estimate of value. Or, you could offer it at auction with a somewhat high reserve to see who bites, or disassemble to look at cams, pistons & bearings. Does the engine turn over freely?
 

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750 veloce block, carbs and sump with 105 head
Valve cover is younger than the head which are both 105. This engine was fitted to a non-Alfa transmission-see the flange.........Possibly fitted to a racing car or boat.
Those carbs sell for an arm and a leg. Good buy!!
 

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Thank you all for clearing up what appears to be conglomeration of Alfa engine parts! I was told that it turns over freely but will verify this week.
 

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Barn101; BaselJ & argtv6 are all correct, 1958 750 Series Veloce block with an early 105 head (no tabs) & later 105 cam cover - be interesting to know how they fitted the 105 head to the 750 block as 750 head studs are shorter because the heads are thinner - I suspect this one has had longer replacement studs fitted. Veloce oil pan has a large weld in the front. Agree it was fitted to a Non Alfa application. Fan blades have been machined off, must have been fun fitting the fan belt like that. Carbs have huge value in today's world.

Ciao
Greig
 

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Engine block looks like a replacement 105 block too me. The dip-stick has been glued in with some white gue.
 

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I Can't shed any light on this but can someone explain where the cooling system connect to. obviously the water pump but im used to seeing an inlet at the front of the manifold. any idea how it connects? also another detail is the cam vent pointing forward, for no real reason i think it might have been in a boat, would that exhaust fit in an Alfa engine bay,

cheers Ian
 

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Maybe the engine was setup for a single seater race car. Rear of block modified for a Hewland gearbox ... ?
Pete
 
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Definitely a 750 block - no fuel pump drive below the distributor & the number dates it as a '58 Series I Veloce block

The water rail above the carbs on the 750 Veloce was a loose fit tapered steel tube which used 3 rubber tubes to connect to the manifold - if anyone needs one, I have 2 left over from my run of stainless repro ones, powder coated black

Aye
Greig
 

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A close look at the front of the head might determine whether it is a late 101 1300, early 105 1300 or early 1600! If it a big bore 1300 all out racing motor, maybe a 1600 head would be used.
Just thinkin'.......
Jim
San Antonio, TX
 
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