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08-29-2022
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#1 |
 
Join Date: Sep 2016
Location: Ocala, FL
Posts: 900
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Prototype Piston Award Signatures?
64ADF629-482A-455C-8E79-3276DD1F4714.jpg
I purchased this at the Carlisle auction. 0B3DC6BE-A0C5-4C72-A324-B12D247CDBA0.jpg What is the significance of the the steel band molded into the skirt? B7C0F33B-93DC-439A-9D94-088AEB297903.jpg Ray Cline? Chris Allen? What were these mens tasks in development? F7032E4A-D51F-4C2C-B807-B9CE51A3F8D1.jpg Rick Kuli? 64FB57EB-2828-4A41-A53B-15EA68C098CE.jpg Gary Van Duster?
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Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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08-29-2022
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#2 |
 Join Date: Feb 2013
Location: New Concord Kentucky
Posts: 181
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Re: Prototype Piston Award Signatures?
Steel inserts to help control thermal expansion.
Gary Cline, Chris Allen, Greg Vandeventer and Rick Kirk Graham |
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08-30-2022
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#3 |
Join Date: Jan 2021
Location: Beautiful Bavaria
Posts: 523
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Re: Prototype Piston Award Signatures?
Steve, I can't contribute to your questions but let me say that this is DAMN cool piece!
Congratulations!
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ZR-1 #638/1991 |
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08-30-2022
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#4 |
Join Date: Dec 2020
Location: Pittsburgh
Posts: 145
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Re: Prototype Piston Award Signatures?
Steve a cool piece!
I see you made it back to Florida! great to meet you in person. Anthony |
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08-30-2022
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#5 |
 
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,096
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Re: Prototype Piston Award Signatures?
A great find Steve! And thank you Graham, for your explanation. I have a piston from a '93 engine and I had honestly never noticed the little steel inserts until today after Steve mentioned it and I noticed just a bit of rust that has formed on the steel (after sitting on my deck for probably 20 years). A great bit of ZR-1 trivia. But I am curious: do other aluminum pistons commonly have such steel strips to adress thermal expansion or is it just the LT5s? --Bob
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" |
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08-30-2022
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#6 |
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Join Date: Feb 2013
Location: New Concord Kentucky
Posts: 181
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Re: Prototype Piston Award Signatures?
Thanks for showing pictures of the later piston Bob.
If you compare the earlier piston pics, you will see the subtle change in the piston casting to better support the expansion insert towards the pin boss, since the early ones used to break off at that point. Also the piston change to add an accumulator groove. Cool stuff. Graham |
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08-30-2022
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#7 |
 
Join Date: Aug 2005
Location: Northridge, CA
Posts: 1,461
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Re: Prototype Piston Award Signatures?
I never knew or noticed before either.
Image1661904375.345390.jpg My simple mind is trying to figure out how they'd help with thermal expansion. Improved heat dissipation? Sent from my iPhone using ZR-1 Net Registry
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1995 ZR-1 #106 Blk/ Blk Owned by me since 2000. 93K miles, but not on motor :-) Mods the way I want it, Not afraid to drive it! Last edited by tf95ZR1; 09-21-2022 at 01:46 AM. Reason: Wanted 2 |
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08-30-2022
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#8 |
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Join Date: Sep 2016
Location: Ocala, FL
Posts: 900
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Re: Prototype Piston Award Signatures?
Per Grahm, steel inserts to control thermal expansion. This means they could have a tighter tolerance of piston skirt to cylinder wall to control slap and wear?
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Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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08-31-2022
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#9 | |
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Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,096
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Re: Prototype Piston Award Signatures?
Quote:
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 08-31-2022 at 11:24 AM. |
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08-31-2022
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#10 |
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Join Date: Feb 2013
Location: New Concord Kentucky
Posts: 181
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Re: Prototype Piston Award Signatures?
Bob, Yes on cast pistons.
Graham |
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