Ly-Con Crankcase Seal Article & STC cost; Porting/Polishing results for Lycoming 0540(R/TR182) Engines

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scottrsellers
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Ly-Con Crankcase Seal Article & STC cost; Porting/Polishing results for Lycoming 0540(R/TR182) Engines

Post by scottrsellers »

From: scott@cessnar182.com <scott@cessnar182.com>
Sent: Thursday, January 8, 2026 12:29 PM
To: Chris <chris@lycon.com>
Subject: RE: Reminder - Tuesday 1/6/2026 7PM CST Zoom discussion with Cessna R/TR182 Type Club

Hi Chris,

More questions – 1) With Ly-Con porting & polishing of the factory installed Lycoming 0540-J3C5D(235hp) cylinders on the Cessna R182, how much HP increase can be expected? Note: cylinder PN 05K21231
2) Is the rubber crankcase seal available for use on certified airplanes like the Cessna R182?
If so what is the typical cost to cut & install the rubber seal?
Thanks
Scott Sellers
scott@cessnar182.com
www.cessnar182.com
From: Chris <chris@lycon.com>
Sent: Thursday, January 8, 2026 3:02 PM
To: scott@cessnar182.com
Subject: RE: Reminder - Tuesday 1/6/2026 7PM CST Zoom discussion with Cessna R/TR182 Type Club

Scott

We’d expect to see 25/30HP increase in the dyno with ported cylinders

And yes, there is an STC on our case o-ring mod…so okay for certified engines. We charge $1278.00 to modify the cases

Chris
CRANKCASE  SEAL Page 001.jpg
CRANKCASE SEAL Page 001.jpg (210.48 KiB) Viewed 10 times
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CRANKCASE SEAL Page 002.jpg (331.85 KiB) Viewed 10 times
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CRANKCASE SEAL Page 003.jpg (354.8 KiB) Viewed 10 times
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CRANKCASE SEAL Page 004.jpg (239.29 KiB) Viewed 10 times
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CRANKCASE SEAL Page 005.jpg (318.13 KiB) Viewed 10 times
Attachments
CRANKCASE SEAL.pdf
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Scott Sellers
1978 R182/300XP/RSTOL
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