Sources Reference Page


This is the ‘Sources Reference page’, the single location for builders to understand where particular engine parts come from. The numerical listing below is directly from my 2014 conversion manual. It has been abbreviated to distill it down to the parts it takes to complete and run an engine at A Corvair College.


The new development this year (2015) is Dan Weseman of SPA/Panther and myself now cover the full list of parts. In years past, we have had others provide some of the parts or an optional 5th bearing. But today, for the sake of builder progress, getting this done faster, and simplifying the process. Some of the old sources still make a trickle of parts, but Dan and I have committed to making the investment of great amounts of time and money to mass produce the parts and stock them. In years past, having an item like heads made by a guy who treated the task as a part time hobby lead to the number of successful builders being limited by one suppliers unwillingness to address the demand. From here forward, the number of successful builders will be determined only by the number of builders motivated to learn build and fly.


Since 2011 we have held four Corvair Colleges per year, and in 2016, we are looking at raising the pace to five or even six Colleges. In years past I was always more than fair about bringing in smaller suppliers and encouraging builders to consider their work, but I have moved away from this because the smaller suppliers never took meeting the actual needs of builders seriously. Today I have no problem if a builder brings a set of Falcon heads or a Roy bearing to a college to finish his engine, but any builder getting started now, should just follow the sources below, because it is the proven way to make progress now. It is much easier for Dan and I to coordinate to make sure every builder get all the parts he needs, and they are fully compatible. Dan works most of the Corvair Colleges with me to demonstrate and supervise the installation and assembly of his products. If you are planning on assembling your engine at a College, utilizing a Crank, 5th bearing and heads from Dan makes sense.


Notes on this reference page: Groups marked with a WW are from us, Our products page is here: .  Groups marked with SPA, are from Dan and Rachel Weseman, their site is here: .  Below many of the group listings are links to go to stories about that specific group. At the bottom of the page are a set of links to stories about up to date sources and specific engines. This page will be continuously updated.




Above, Dan Weseman and I stand in my front yard; This was the first run of the Panther’s engine. Although we have fully independent businesses, our products, teaching and philosophy mesh, and this directly works for both builder progress and learning. I have known Dan for almost 15 years, and for the past 10 we have lived at the same small grass airport. For each of us, homebuilding isn’t a hobby nor even a job, it is a calling. Over 25 years of work with homebuilders it has long been obvious to me that every new homebuilder needs trusted and experienced mentors, who painstakingly acquired the knowledge and experience the new builders are working to master.  A successful plane is built from a comprehensive plan, guided by mentors who know the skills from making the first part to flying it.  Dan and I have both have a very long track record of being this kind of guide to countless homebuilders.


Corvair Flight Engine Conversion Groups And Parts Numbering System:


1000- Crankshaft group – SPA

Sources: Group 1000, Crankshaft

1100- Camshaft group –  WW

Sources: Group 1100, Camshaft.

1200- Crankcase group – SPA (If building a 3,000 cc engine)

Sources: Closing a case

1300- Piston and rod group – WW 2,775 cc  SPA 3,000 cc and 3.3L

Sources: Choosing a displacement.

1400- Cylinder group – WW 2,775 cc  SPA 3,000 cc and 3.3L

2,775 cc Pistons are here.

3,000 cc Corvair Engine Details

1500- Head group – SPA

Sources: Group 1500 – New cylinder head source

1600- Valve train group – WW

1700- Head clamping hardware group – WW

1800- Steel engine cooling baffles group – WW

1900- Valve cover group – WW

E-mail Now: Custom Valve Covers Available Through Monday

2000- Rear oil case group – WW

High Volume Oil Pump

2100- Harmonic balancer group – Clarks Corvairs

2200- Oil pan group – WW

2400- Starter group – WW

2400-L Starter

2500- Hub group – WW

2600- Top oil group – WW

2650- Oil filter group – WW

2700- Stock oil cooler group – From your core engine

2800- Heavy duty oil cooler group – WW

2900- Standard charging system group – WW

Front and Rear alternators, their part in numbering system

2950- Rear charging system group – SPA

2970- Alternator group – SPA

3000- Weseman 5th bearing group – SPA

Sources: Choosing a 5th Bearing

3050- 5th bearing oil line group – WW

3300- Ignition group – WW

E/P and E/P-X Ignition systems, (3301E/P and E/P-X)

Ignition system, experimental “E/E-T”

One Reply to “Sources Reference Page”

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: