Builders,
Last week our piston manufacturer in California, the same one we have used for years to make 2,850 and 3,000 cc pistons, called to say that my order of 2,775 cc pistons will be done by the third week of October. I placed a very large order with them a while back, and these will be delivered in time to make their public debut at Corvair College #35 at Barnwell.
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These pistons are a large overbore on a stock 1965 Corvair cylinder. They are aimed at being able to run 89 octane auto fuel with 95 heads or 92 octane with 110 heads. Because they are a bored, the cylinder set is several pounds lighter than a smaller engine, and lighter than a 2,850 with it’s thicker wall full-fin cylinders. I already have several hundred original cylinders at Clark’s Corvairs, ready to be bored to match these new piston sets.
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These pistons are made with spiral locks, so they can have floating wrist pins, and be easier to assemble than stock pistons which need to heat the rods to install the wrist pins. The ring sets are .060″ over Hastings Chrome rings, the same ones we have put into Corvairs for more than 20 years. Because these pistons have floating pins, they can also use the new billet rods available from the Weseman’s at SPA/Panther.
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These will not appear on our products page until they are here, we are not selling them yet, we don’t need deposits, etc., but if you are interested, you can always send us a note with “2,775” in the subject line. we will let you know more in a few weeks.
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-ww.
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Above, a 2,850 piston made in the USA, specifically designed for flight engines. The “2,775 cc” looks identical, but is .045″ less in diameter and has a different chamber volume. I wrote a story about having these on the back burner of development 24 months ago, but the project will be done shortly, and they will be an option for builders. read more: Getting Started in 2013, Part #15, 2,775cc.
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