Engine built on a factory 547 parts room case, so no serial number.  It could be described as a 547 engine, unofficial designation "547/0"  All this really means is that it is a 550 engine.  A 547/1 engine would be for a 356 Carrera, and could be either GS or GT.  547/2 would be a 550A engine.  All three of these engine types were built with an 80mm Hirth roller bearing crankshaft.  This engine has a crank we rebuilt in house, as we have been doing all our own roller crank work for several years now.  The crank in this engine was a really nice piece, no previous over revs or damaged journals of any kind requiring sleeving or special journal repairs.  Original factory Hirth connecting rods, new rollers, new aluminum roller cages on mains and rods.  Other features:


- Original first generation 85mm factory cylinders, stripped and relined with Nikasil.  Standard 1500CC displacement.

-  New Mahle Motorsports 85mm pistons, made to our specifications.  The dome shape, height, valve relief flats made to same dimensions as originals.  Lightweight with improved ring design, anti friction material on piston skirts.

-  10:1 compression ratio, can be safely run with street super unleaded pump gas.

-  Original factory valves intake and exhaust.

-  New valve springs.

-  Rebuilt oil pump.

-  Die cast Solex 40PII4 carburetors rebuilt by 356 Carb Rescue, with correct 4 cam throttle linkage arms to connect with 550 style horizontal throttle linkage and center pivot piece.

-  New reproduction ignition distributors made by Speedco in Holland.  Electronic trigger device instead of points.  Separate control unit which controls the ignition timing curve.  In one of the videos I will be sending, you can see Matt's cel phone setup with the app to program the ignition curve.  The curve can be custom programmed however you like, we set the curve to duplicate the original factory curve from a graph we have.  The outside casting of the distributor bodies look very much original, as do the distributor caps.

-  High energy ignition coils included with engine, as seen in the video bolted to the side of the running stand.  These particular coils came with the parts package that had the distributors, rotors, caps, and control unit.

-  7mm black shielded ignition wires, an improvement over the original solid core wires which helps prevent cross firing between wires.  Outside appearance same as original.  

-  200mm clutch and pressure plate.  Plate is a standard C/SC Sachs unit, special road / race hybrid disc.  Very friendly for street driving, no weird race clutch feel or engagement.  Pressure plate and flywheel balanced together.

-  12 volt Bosch generator from a 1965-67 912, rebuilt in house on our custom test stand.  Comes with a "black box" regulator which has been tested and adjusted to make sure it works properly with the installed generator.  Charging system functions checked during run in on stand.

-  All hardware, intake manifolds, throttle linkage, etc stripped and cadmium plated.

-  Cooling system sheet metal powder coated in semi gloss black.

-  Run on our test stand several times, approximately one and a half hours of no load run time on Joe Gibbs break in oil.  Ignition timing adjusted, idle mixture and speed set.  Valves adjusted after initial run in, valve covers sealed, cylinder heads re torqued.  

-  Compression and leak down tests performed.  I have the compression test results at the shop, could email you tomorrow of Wednesday.  Leakdown 2 to 3 percent.

-  Does not include lower air shrouds, air cleaners or exhaust system.  The really loud home made exhaust in the video is our shop test mule, used when engines don't have a system to go with it.  Not included.

Engine is located in the Northeast and could be inspected by appointment.  

Scroll to see more of this engine. Click the images to enlarge.

Type 547/1 Engine

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