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Title: Relief Piston W/Notch Post by: DKK Ted on July 27, 2012, 06:10:25 am What is the story on these, thought these were after market to boost oil pressure, now I hear VW put them in on Type III? Can somebody shine some light on these??
Title: Re: Relief Piston W/Notch Post by: johnl on July 27, 2012, 15:38:28 pm The only time I ever saw these was when Rapid Cool offered them with their external coolers and they also sold them separately. As I recall they came in a (2) pack for dual relief cases.
Title: Re: Relief Piston W/Notch Post by: bugnut68 on July 27, 2012, 16:46:39 pm Don't know the full story behind them (though I'm sure someone does), but the Bentley manual shows a notched piston I believe in the '70-79 (orange) book.
Title: Re: Relief Piston W/Notch Post by: kingsburgphil on July 28, 2012, 01:30:00 am For what it's worth, CB perf sells them.
http://www.cbperformance.com/catalog.asp?ProductID=217 Title: Re: Relief Piston W/Notch Post by: neil68 on July 28, 2012, 03:36:02 am I have never seen these in any VW factory original Beetle engine that I've disassembled. I believe they were installed in the Type 3 engines...
Title: Re: Relief Piston W/Notch Post by: andy198712 on July 28, 2012, 12:26:21 pm Comes from the 1500S
Title: Re: Relief Piston W/Notch Post by: DKK Ted on July 29, 2012, 06:11:49 am Thanks guy's, so why did they only used them on the 1500s and not the other?
Ted Title: Re: Relief Piston W/Notch Post by: andy198712 on July 29, 2012, 10:57:08 am That's what I thought too
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