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The engine case is a new magnesium case made
in Brazil. It is an AS-41 casting. I purchased it stock and I am doing all the
modifications myself. You can follow along with the progress here.
Engine Case |
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This is my 78mm Scat crank after cutting in
half. You can also see the taper on the nose for the prop hub. Check out the
modifications here. Crankshaft |
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These are Scat cylinder heads I purchased on
a complete VW aircraft engine. They were already machined for 94mm cylinders
and for dual ignition. I probably won't have dual ignition and will plug the
extra holes. These heads have 40 mm intake valves and 35 mm exhaust valves
which should work good for this application. Cut heads probably work as good as
these but they don't look as cool. |
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I am using 94 mm cylinders because I was
told that 92 mm cylinders have thin walls and distort when they warm up. The
bores for the 94 mm cylinders get very close to the case savers and I'm told
the case might crack because the bores are so large. You makes your choices and
you takes your chances. Give me more power! The cylinders were made by Mahle
and the pistons are coated with graphite. |
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This is a Scat C20 camshaft with Mahle
lifters. I purchased them both directly from Scat so I guess they work together
all right. The Scat guy recommended this grind and I have heard it recommend by
some other aircraft engine guys so it should work pretty good. The guys at Scat
are very knowledgable and their parts are very high quality. |
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Scat I-beam connecting rods are pictured
here. They come from the factory clearanced for a stroker crank and are forged
4340 steel. Nice! |
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This is the prop hub I am using for this
engine. It is a Force One from Great Plains. I haven't seen any other half VW's
out there using this hub but it looks to me like the strongest thing out there
for a direct drive VW. This is probably overkill but it came with my crank so
I'm using it. My brother is also building an engine and he is using a hub from
Millholland. It is very high quality and I would recommend it also.
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This is the Slick mag I will be using. It is
a model 4316. I purchased it on ebay. It is not quite new, it has one hour on
it. |
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I want an oil filter so I purchased this oil
filter adapter and the oil pump on the left from CB Performance. The adapter
isn't quite aircraft quality so I will be trying something else. The oil pump
on the right is the one I will be using because it is stock and it takes more
power to drive a high volume pump. |
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These are the OEM bearings I purchased.
Everyone's plans differ on the location of the thrust bearing. Some recommend
installing two thrust bearings. The stock thrust bearing is too narrow to fit
the stock center main bearing bore so something will have to be done. It will
require some further study before I decide what to do. I'll update you
later. |
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The beauty of using a VW engine for power in
an airplane is that everything can be purchased new and you can get the parts
at just about any auto parts store. This is some of the hardware and misc.
parts and supplies needed to assemble an engine. |
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1/2 VW Engine
