Closing a case at a College, Part #1

Builders,

Today we are 1 month away from Corvair College #33. A number of builders who have signed up are coming to close their case, and get ‘over the hump’ of getting the first third of their engine done. This series will highlight the steps in this process, and provide specific guidance. If you are planning on attending CC#33, keep in mind that we will close the sign up in just over 10 days, and the event is already 50% full. Read more on signing up here: Corvair College #33 sign up now open:

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18 months ago, I wrote a long series on options of getting started building your Corvair. The page containing the links to the 20 individual stories can be found here: Getting Started Reference page. The information is good, it needs only small revisions to bring it fully up to date, but it is well worth reading over an evening or two, so each builder can look at the options and map out his own plan.  In this series, I am going to look at only the two most popular options for closing a case, building a 3,000cc case set up for a Weseman Gen 2 bearing, and building a 2700cc case set up with a Weseman Gen 1 bearing.  The closest stories to these two options are Getting Started in 2013, Part #7, ‘Chas. Charlie’ Short Block and Getting Started in 2013, Part #5, ‘Allan Able’ short block. respectively. In the series we will update and detail each of these approaches.

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Fundamental to understanding our information here, is getting better acquainted with our numbering system. The new manual is based on it, as is our products page: ( http://www.flycorvair.com/products.html ) The Groups we will be working with are the following:

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1000  The Crankshaft Group

1100 The Camshaft Group

1200 The Case Group

2000 Rear oil Case Group

2100 Harmonic Balancer Group

2400 Starter Group

2500 Hub Group

3000 Weseman 5th bearing Group

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Over the next few nights, we will look at the elements of each of these that make up a first class closed Corvair Case. I invite builders to write in on the comments section and share any question or comment they have.

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Above, Blaine Schwartz and myself at CC#22. We are standing in front of his closed case. Note the smile, this is the look of a builder having a good time, making progress, learning with friends. Blaine is now flying this engine in his Zenith 750 : ( Flying Zenith 750, 2850 cc Corvair, Blaine Schwartz ) A college is an excellent setting to really get started on your engine in a knowledgeable, supportive setting. All you have to do is sign up, and do a little planning as detailed in this series. -ww.

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 www.FlyCorvair.com and in more than 50 magazine articles.

3 Responses to Closing a case at a College, Part #1

  1. Tom Hubbuch says:

    William, I am finally starting to build my engine, a 2700 w/ Weseman Gen 2 bearing/crank kit, with high volume oil pump. I am maintaining the stock oil flow, but will use a remote filter, and will use stock cooler mount and cooler. I have modified the stock cooler mount by tapping into the oil port being returned to the engine block from the cooler. I will run a line from that point to the front bearing. Two questions:
    Q1 – what size hose line is appropriate for the feed to the front bearing?
    Q2 – I plan to measure oil pressure at that tapped point. I plan to measure pressure at the top/center of the accessory case cap, schematically between the filter and cooler, as in the car. Is this OK?
    Thanks, Tom H

    • Tom Hubbuch says:

      Correction to Q2 above:
      I plan to measure oil pressure at that tapped point. I plan to measure TEMPERATURE at the top/center of the accessory case cap, schematically between the filter and cooler, as in the car. Is this OK?

      • Tom Hubbuch says:

        Let me summarize and add a 3rd question:
        Starting build – a 2700 w/ Weseman Gen 2 bearing/crank kit, with high volume oil pump. Stock oil flow, remote filter, stock cooler mount and cooler. Modified the stock cooler mount by tapping into the oil port being returned to the engine block from the cooler. I will run a line from that point to the front bearing, as well as measure the pressure at that point. Three questions:
        Q1 – what size hose line is appropriate for the feed to the front bearing?
        Q2 – I plan to measure oil pressure at that tapped point. I plan to measure Temperature at the top of the accessory case cap, which is at a point in the flow between the filter and cooler, as in the car. This should be the hottest oil temperature. Is this OK?
        Q3 – What size drill bit should be used to enlarge the oil pressure regulator bypass hole when using the high volume oil pump?

        Thanks,
        Tom H

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