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1984CC 924 Engine Specs Please

 
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Super Vee  



Joined: 30 Jan 2019
Posts: 1
Location: Arkansas USA

PostPosted: Wed Jan 30, 2019 3:38 pm    Post subject: 1984CC 924 Engine Specs Please Reply with quote

Hello to the forum as this is my first post. Could anyone provide the standard specs listed below for the 1984CC 924 engine? The standard unmilled block/deck height, the maximum "SAFE" overbore for the 1984CC block, the bore spacing of the cylinders in the block Also need the diameter of the standard unturned crankshaft main journals and rod journals and the standard center to center length of the connecting rods. Appreciate any insight and information from the forum and THANKS!!!! Jerry Poole
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ideola  



Joined: 01 Oct 2004
Posts: 15501
Location: Woodstock IL

PostPosted: Thu Jan 31, 2019 4:38 am    Post subject: Reply with quote

http://garage.ideola.com/top-DL-CompressionRatioCalc.html
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88 924S SE | 82 931 Holbert | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition
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gegge  



Joined: 27 Jul 2007
Posts: 1075
Location: Sweden

PostPosted: Sat Feb 02, 2019 4:04 am    Post subject: Reply with quote

I did measure the cylinder wall thickness with ultrasound some five years ago. There is pleanty of meat. I did post the numbers on another forum, but itīs dead and I canīt get ahold of the data. IIRC, 90mm shouldnīt be a problem, even with boost. Still, the problem isnīt cubic inches. The problem is the head, or rather lack of. It doesnīt flow well. Depending on class regulation, there are solutions though. Some radical modifications can get you +200hp revving beyond redline.

Borespacing is 95mm and that is litterarly one of a kind. Rods are 144mm and lighter (still forged as OEM) can be bought on Aliexpress. BMW S14 and S36/38 are options easy to come by, more or less bolt-on. BMW crankbearings are narrower than stock, hence piston guidance by shims. Works like a charm: https://www.youtube.com/watch?v=ZEepQkhJKV4

If you got Super Vee experience, I belive you can teach us a trick or two.
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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs
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