Larry Elrod’s 2,700cc Test Run


KR-2 Builder Larry Elrod and his lovely wife scheduled a visit to my hangar for a full day test session and a bit of one on one training this past Friday. They dropped the engine off at dinner time Thursday, and rested up at our local Holiday Inn.


We started at 9 am on Friday, and had a smooth, productive day were I answered every question Larry had. His engine arrived fully assembled, I just checked a number of adjustments, and for the most part found them spot on.We cover these same things at Corvair Colleges, but some builders prefer a more relaxed and personal day. We took a short break for lunch in my dinning room, and went back to prime the oil system for 30 minutes. At 4 pm rolled the engine out to my ramp for a break in run.


The engine cranked for 1 or maybe 1.5 seconds, about 2 revolutions, and it lit right off and ran smooth. It was a great moment of personal achievement to Larry. Although he spent 20 years in the USAF, he worked on missiles, not internal combustion engines. At age 66, he now joined the ranks of real ‘motor heads’ by fully rebuilding an engine with his own hands, and having it run perfectly.


Over the last 29 years, and 42 Corvair Colleges I have been present for this same moment, in the lives of more than 400 builders. I can assure you, it has never become commonplace. Playing a positive role in another person’s personal achievement, one which will be a foundation of their ultimate goal of being master of the complete aircraft they build themselves has a satisfaction which does not fade. It is the root of what is rewarding about my work.



Above, the moment of achievement: Larry strikes the obligatory “Captain Morgan pose.”  To read more about this integral part of Corvair building read: “Captain Morgan” Contest at #39



Above, a short video of the engine running. In the film you can see than my front yard is literally adjacent to our 2,600′ grass runway. Over the years we have had perhaps 30 guests to our home and hangar for an engine run. These have to be scheduled in advance, and a friendly reminder new people: I wouldn’t stop by their residence uninvited, so they should not invite themselves to mine.  



Above, Larry has a very important asset for his project, which not all builders enjoy: A highly supportive spouse. They have been married a long time, and are mutually supportive. After we spoke in the phone, they drove down from Michigan in a small pick up. The trip made sense to them because it allowed Larrys engine to be inspected an run here. The trip and the run seemed like a good personal risk management decision to them.



Above, a justifiably proud man.  Larry’s 2,700cc 100HP Corvair is straight from my Conversion manual, and it is built exclusively from my conversion parts and those from SPA/ Panther.  Although this engine is going on a KR-2, it follows the logic of this approach: Why Not the Panther engine?.  Its also worth reviewing this story: Understanding Flying Corvairs Pt. #2, Hardest working engine.


As you look at Larry’s engine above, notice that it is built around all of our standard systems. It has an ultra-light front starter, E/P-X ignition, welded on intakes, a Weseman 5th bearing, short gold hub and a Gold oil system. For these reasons, it will have the same successful track record of the Corvairs we build, and it will be able to use our proven, off the shelf items like baffle kits, Oil Coolers, and cowls, intakes etc.


 Over the years, there was a general trend among KR builders influenced by the internet, to build ‘unique’ and one of a kind engine installations. While everyone has a right to build what they want, none of these installations had a track record of reliability that could match one of our standard installations. This should come as little surprise, I have been doing this a long time, and have always ‘reserved the right to get smarter’, and our installations have evolved. No builder on his first look at one engine could seriously match what I have learned with an outstanding education, a quarter century of specific experience, a number of smart professional friends, and the benefit of studying several hundred installations. This is why builders who understand the phrase ‘the second mouse gets the cheese’  choose to benefit from my work and research instead of being offended by it. For a look at some one of a kind KR installations and the results, look at this: Built by William Wynne? Built according to The Manual?.


Installation Components:

We have a full range of bolt on Installation Components to mount a Corvair in a KR. Check out some of these linked stories:

MountS: A 2016 story about our mounts: Zero back ordered Motor Mounts.


Exhausts:  Stainless Steel Exhaust Systems

Intakes:  Intakes and Internet myths


Contemplating a individual test run? Call me, 904-806-8143.

Thanks, William


The Next Event on the Schedule:

FlyCorvair/SPA – Joint Workshop/Open house, May 18,19,20

Also get a look at:

Build a 3.3L Corvair at the May 18-20 Workshop/Open house.

Read the links now and make a plan today.

About William Wynne
I have been continuously building, testing and flying Corvair engines since 1989. Information, parts and components that we developed and tested are now flying on several hundred Corvair powered aircraft. I earned a Bachelor of Science in Professional Aeronautics and an A&P license from Embry-Riddle Aeronautical University, and have a proven 20 year track record of effectively teaching homebuilders how to create and fly their own Corvair powered planes. Much of this is chronicled at and in more than 50 magazine articles.

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