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Old 05-01-2021, 05:43 PM
Jetmart's Avatar
Jetmart Jetmart is offline
Join Date: Sep 2019
Location: Windsor, Ontario
Posts: 393
Default Where on sump to Mount Pre heat Pad on IO-390A?

Most of the bottom flat surface area on a IO-390A sump appears to be the intake plenum. Where are people attaching their pad heaters to maximize contact with the oil sump?
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Glenn Martin
Windsor, Ontario
1942 Tiger Moth
2017 Waco YMF-5
RV-14 Kit # 140694
First Flight - June 22, 2021
2021 Dues Paid
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Old 05-02-2021, 07:21 AM
Brian Perry Brian Perry is offline
Join Date: Sep 2018
Location: Saginaw, Michigan
Posts: 40

I used the Reiff turbo system and put the two sump heating pads on the sump protrusions on each side. The left one was on the lateral surface as seen in the photo under the "red cube". The right one was placed on the rear surface of the protrusion because the data plate for the engine was on the lateral surface. Hope this helps.
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Brian Perry
RV 14A Kit #140588
Airworthiness Certificate Issued 1/9/2021
First Flight 1/23/2021
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Old 08-17-2021, 11:44 PM
Swiss14A Swiss14A is offline
Join Date: Feb 2018
Location: Switzerland
Posts: 33
Default EXP239

Hi guys

We have the new YIO390-EXP239 (EXP119 as called by Van’s) installed and have no straight surface on the oil pan.
The only possibility I see is below the oil pan. But even here we have an imprint on the right hand side, so we don‘t have a flat surface…

Any experience with the EXP239?

00E0CDE9-8033-4ABD-8E7E-857580C29BE9 by Fabian Hummel, on Flickr

Alexandra & Fabian
RV14 HB-YAF, in progress
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