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Youtube video of record 924 Bonneville run
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gegge  



Joined: 27 Jul 2007
Posts: 1003
Location: Sweden

PostPosted: Tue Oct 10, 2017 7:03 am    Post subject: Reply with quote

The lifters I asked Sten Parner to make

The Porsche SAE papers from Motorbooks International 1979, "The Porsche 924 Body - Main Development Objectives" by Hermann E. Burst and Rainer Srock. Fig 2. Lift forces acting upon the Porsche 924. Lift is measured in daN and at 210kmh the chart is showing 80 daN at rear axle.

My bad since 1 daN is equal to 10 N (deka), hence 800N = 176 lbs
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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT clone LSD Coilovers
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black with low ET "Phonies"
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Qik Nip  



Joined: 16 Jan 2015
Posts: 114
Location: Kentucky

PostPosted: Tue Oct 10, 2017 7:20 am    Post subject: Reply with quote

gegge wrote:
The lifters I asked Sten Parner to make

The Porsche SAE papers from Motorbooks International 1979, "The Porsche 924 Body - Main Development Objectives" by Hermann E. Burst and Rainer Srock. Fig 2. Lift forces acting upon the Porsche 924. Lift is measured in daN and at 210kmh the chart is showing 80 daN at rear axle.

My bad since 1 daN is equal to 10 N (deka), hence 800N = 176 lbs


Thanks Carl. That makes me feel better about the hoped for effect of the spoiler!
Rick
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'79 NA 924 Land Speed Car
Bonneville G/CPRO record holder @ 145.632 MPH
'96 LT4 C4 daily driver
Great Lakes SCCA SM points champion '09,'10,'11
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ideola  



Joined: 01 Oct 2004
Posts: 15462
Location: Woodstock IL

PostPosted: Tue Oct 10, 2017 7:37 am    Post subject: Re: Engine answers Reply with quote

Qik Nip wrote:
ideola wrote:
Qik Nip wrote:
When dynoed it peaked at 8,300 RPM's - although it will pretty safely spin at 8,500.

You didn't mention lifters...I presume you are not using the OEM lifters? They are known to crack at about 7500 RPM.


Good catch...No they're 38.5 mm lifters from a European maker (Ventiltryckare?). Got them from a Swedish outfit named ACM.SE. So far no failures.
Rick


Rick
Those are the Sten Parner lifters that I resell on my site. Good shit.

Thanks for the details on your build. I posted your YouTube link over on my FB page, hope you don't mind. Very keen to follow your next attempt. Let me know if there's anything I can do to sponsor and promote.
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15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
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Qik Nip  



Joined: 16 Jan 2015
Posts: 114
Location: Kentucky

PostPosted: Wed Oct 11, 2017 5:29 am    Post subject: Lifters Reply with quote

Dan:
Looking back I sure wish I'd known that you had them. It was something of a challenge buying those lifters in a language I don't speak (or read) and in a currency that had me having absolutely no idea what I'd paid until I found a currency calculation on Google!
As for sponsorship support, I'd welcome any you might have in mind and would happily plant a nice big Ideola Logo on the car. In case you'd like to discuss, I'll PM you my contact info shortly.
Rick
_________________
'79 NA 924 Land Speed Car
Bonneville G/CPRO record holder @ 145.632 MPH
'96 LT4 C4 daily driver
Great Lakes SCCA SM points champion '09,'10,'11
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