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Old 04-15-2021, 08:10 PM
LR60 LR60 is offline
Join Date: Jan 2011
Location: Trinity,NC
Posts: 40
Default YIO-390-A3B6 vs YIO-390-EXP60

A YIO-390-A3B6 is what I purchased from Vans according to all their paperwork and invoices..

A YIO-390-EXP60 is what Lycoming sent me.

Is this just a case of Vans forms and invoicing not keeping up with Lycomings model number changes? Or is there other differences.

RV-8 Emp (built/sold)
RV-14 (in-work)
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Old 04-15-2021, 08:17 PM
erikpmort's Avatar
erikpmort erikpmort is offline
Join Date: Oct 2012
Location: logan, utah
Posts: 412

I had the same worry they had to change the numbers as an faa rule is what they told me
Erik Mortenson
Rans S-20 low and slow

14 build working on wings
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Old 04-16-2021, 06:36 AM
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jeffreyuh60 jeffreyuh60 is offline
Join Date: Sep 2018
Location: Saint Paul
Posts: 16
Default YIO-390-A3B6 vs YIO-390-EXP60

Interestingly enough, I ordered the YIO-390-EXP119 Thunderbolt engine and received a YIO-390-EXP241. I called Lycoming to inquire about the difference, and have yet to receive an explanation.

Jeffrey Turner
Engine mounted yesterday!
Jeffrey Turner
RV-14 N39JT reserved
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