Stuart_Snow Posted April 19, 2018 Share Posted April 19, 2018 Here are some photos of the Corvair aircraft engine conversion for my Pietenpol Air Camper project. The Air Camper was designed by Bernard Pietenpol in 1929 and used a model A ford engine originally. Later Pietenpol was the first to use a Corvair engine in his design. My engine is based on the conversion design and parts developed by William Wynne at flycorvair.com and Sport Performance Aviation flywithspa.com. It is a bored out .030 2.7 Liter (164 C.I. originally) 100 HP engine. 3.0 liter versions are also popular using other piston/cylinder combinations and a 3.3 stoker option is available using SPA's billet crankshaft. My engine uses original cylinders with forged pistons. A 5th bearing and crankshaft for prop loads designed by SPA. A modified oil assembly with high volume oil pump and oil filter adapter. Reworked and modified heads by SPA include welded on intake tubes, deep hardened seats and stainless steel valves. All the original corvair fan and blower equipment goes away and traditional aircraft cooling ducts get used. The ignition is a modified distributor which has points and a crane electronic unit and two coils. The advance curve is modified to come in early and total advance is 32 degrees. These modifications have been tested and proven by Mr Wynne over the past 30 years. The corvair has proven to be a very robust and reliable flight engine and has a reputation for smooth running. I call it my Tonawonda Tornado. Quote Link to comment Share on other sites More sharing options...
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