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SAAC Forum => SAAC Forum Discussion Area => Topic started by: CharlesTurner on December 19, 2021, 05:18:59 PM

Title: 289 oil pickup screen with dimples?
Post by: CharlesTurner on December 19, 2021, 05:18:59 PM
I'm used to seeing at least 65-66 289 engines with a smooth top oil pickup screen.  Does anyone know what the dimpled one is from or if it is simply an aftermarket piece?  Any advantage/disadvantage to using one with the dimples?

Thanks
Title: Re: 289 oil pickup screen with dimples?
Post by: J_Speegle on December 19, 2021, 06:26:33 PM
Seem my share of this version. Since I don't believe there are any markings on them I don't know their source or if they were all original.

Dimples would likely reduce the flow very slightly as I think they were designed to keep the screen from flexing

Sorry no smoking gun from me on this one  ::)
Title: Re: 289 oil pickup screen with dimples?
Post by: TedS on December 20, 2021, 01:50:28 PM
Looks like the Melling and Mahle offerings have the dimples. My first thought was to prevent vortexing but I agree, probably to prevent a full collapse of the screen.
Title: Re: 289 oil pickup screen with dimples?
Post by: gt350hr on December 20, 2021, 01:54:35 PM
  IIRC they came along in '69 or 70.
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