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Old 03-02-2016, 12:50 PM   #1
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Originally Posted by jaykay View Post
Hmmm it is soon long ago and all I recall putting holes in the windage tray to let the swirl pots through...but little else
I hadn't understood this post until I had to go in and face the same problem!!
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Old 03-06-2016, 07:37 PM   #2
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Originally Posted by Dlirium View Post
I hadn't understood this post until I had to go in and face the same problem!!
Well there seems to be another camp that has updated oil return tubes discharging above the windage tray. From what I can see there is no choice if you are working with the updated 987 type....they look to sit high in the sump and don't look like they can extend down below the plane of the tray. In my mind this seems like what you don't want when you have a windage tray in place.

The older type reach down below the tray and dump oil in a restricted volume beside the oil pick up....filling from that point upwards. This is what you want when oil wants to climb the walls of the sump due to windage, Gs, slosh etc. You want a restricted segmented volume around the pickup staving off oil starvation....by trapping returned oil there

This is just my opinion looking at the arrangement visually. When I looked into this mod I was sure to stay with old swirls deaerating and putting oil directly under the tray right next to the pickup.
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