Thread: AOS delete?
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Old 04-10-2021, 09:41 AM   #2
ike84
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Join Date: Oct 2020
Location: KY
Posts: 1,214
Quote:
Originally Posted by JFP in PA View Post
Extremely bad idea. Without the sump vacuum supplied by the AOS, you will suffer ring seal issues as the rings are low tension designs, the system will not flash off water and fuel that collects in the oil, and you run the risk of blowing out the cranks shaft end seals due to pressure build up (both seals are just pressed in and have no other retention devices, so very low pressure is enough to push them out).
No, that's my point - delete the aos but keep an oil catch can it is place, thereby transmitting the entirety of the intake vacuum to the crankcase. No more obnoxious AOS to deal with, plus maybe a bit of extra power by increasing the vacuum and clearing crank case windage.

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