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Author Topic: Relief Piston W/Notch  (Read 2603 times)
DKK Ted
DKK
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Posts: 1879
« 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??
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VW Classic 2012
johnl
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Posts: 1533
« Reply #1 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.
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Volkswagens Limited, Der Kleiner Panzers Founder Member
Celebrating 60 years of Volkswagens in my life 1963-2023

Life is a learning experience and then you die but when you do you've lived a good life if you contributed to your fellow man.
bugnut68
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Posts: 1751
« Reply #2 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.
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kingsburgphil
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Posts: 876
« Reply #3 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
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neil68
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Posts: 538
« Reply #4 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...
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Neil
Der Kleiner Rennwagens
'68 Beetle, 2332 cc, 204 WHP
12.5 seconds @ 172 KM/H (107.5 MPH)
Dynojet Test:  https://www.youtube.com/watch?v=M9B_H3eklAo
andy198712
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Posts: 1063
« Reply #5 on: July 28, 2012, 12:26:21 pm »
Comes from the 1500S
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DKK Ted
DKK
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Posts: 1879
« Reply #6 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
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VW Classic 2012
andy198712
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Posts: 1063
« Reply #7 on: July 29, 2012, 10:57:08 am »
That's what I thought too
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