OK, lets look at an example. I am just calling this a 750, but in reality it is also a potential Panther, Waiex or Cleanex engine also. What I am getting at; this is a big bore engine (3,000 cc) with a Heavy Duty Group 2800 oil system. The Conversion parts going into the engine are highlighted in blue in the chart below.
Above, Greg Crouchley and I stand with his 3,000 cc engine in my hangar, after it’s break in run. Note the reverse oil filter housing. We do not install the HD oil system for the test run because we want to have the oil temp come up early. The engine is now in Greg’s Waiex.
Note that the Conversion parts set doesn’t change with either a GM or a Weseman Billet Crank, or even if the engine has a Gen 1 or a Gen 2 bearing. Listed below are the conversion parts that a common to all 3,000 cc engine with Heavy Duty oil cooling systems. Each engine still has some custom choices in the rebuild parts that each builder can make. Below the part number we have some discussion and a look at budget totals. In part #3 of this series we will look at a 2,700 engine with a standard oil system.
Part description Part Number Pricing Notes
Hybrid Studs 2502 $79
Safety Shaft 2503 $79
Short Gold Hub 2501(B) $579
Front Starter kit 2400 $566
Ft Alter. Brackets 2901 $99
Gold Oil Filter housing 2601(S) $239
Gold Sandwich 2802 $169
Hi-volume Oil case 2000HV $289
Billet Oil Pan 2201(B) $289
Deep oil pick up kit 2202(A) $59
E/P Distributor 3301E/P $349
Valve Covers 1900PC $149
Pushrod tubes 1602PC $60
Piston, Rod, Cyl. Kits
2,850 cc Kit 2850CC $1,800
3,000 cc kit 3000CC $2,200
In the front end category, I left out the 2901 front alternator brackets because many of these engines going in 750s and all of the ones going in Panthers use the Weseman’s rear alternator bracket, which is Group number 2950 in my numbering system ( but you get these direct from Dan and Rachel).
In the oil systems, The Heavy Duty system uses all the parts listed. Additionally many people use a block off plate part number 2805 it is $20. The Welded pans are slightly lighter and $40 less expensive, but on 3,000 cc Corvairs the Gold Billet Pans out sell them 5 to 1.
Every Flying 3,000 cc Corvair I can think of has an E/P style distributor. Only a few of them, like the Panther prototype are E/P-X models, a $40 upgrade. Almost all builders use our Valve Covers. They look good, but they have important mechanical features like being able to see TDC on the engine by removing the oil cap and looking at the #1 rocker arm instead of pulling a plug out. Zenith installations must also have the oil fill in the valve cover.( the stock filler neck hits the cowling.)
The price of the 3,000 cc Kit includes the machine work to the case and heads to fit the larger cylinders. The 3,000 cc pistons are specifically designed and made for Corvair flight engines. They work with both 100LL and auto fuel.
If you add up all the parts above, except for the 3,000 cc kit, you are looking at $2,906. If you add the 3,000 cc kit, you are up to $5,106. Make the distributor an X model, add the block off plate and the total is $5,166. Keep in mind that most builders buy the components slowly over time, but I have the total here because we have lately had a number of requests for a total price from people who wish to buy the parts at one time.
Obviously this isn’t the total price for a 120 HP /3,000 cc engine. This number does reflect the Conversion parts cost, and a big part of the internal engine parts. The list above is the part of the budget that builders spend with us on their project. As I have pointed out many times, we try not to resell anything we can simply direct builders to acquire for themselves, such as the Weseman parts and Falcon heads.
There are a lot of different options on building the rest of the engine, and if you would like to look at them, read this link,Getting Started Reference page. Specifically look at the links to parts #5 through #9 at the bottom, it gives every specific examples of the cost of different levels of bottom ends on the Corvair. -ww.