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911nut 911nut is offline
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Join Date: May 2001
Location: Michigan
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Originally Posted by Cobalt View Post
I did some research the 20 S2's did receive a turbo change. They were fitted with part number 930.123.099.00 along with camshafts 964.105.246.09 and 964.105.247.P3 along with camshaft drive adapter 930.105.171.P3 and large IC part number 930.110.330.P3 Estimated HP was rated at 371 BHP vs the 94 turbo S which is rated at 385 BHP 4 more HP than the ROW 1992 Turbo S which weighed considerably less.
SAE hp of the Turbo S was 375hp (381 PS is the metric hp), very close to the Andial car. Maybe the Turbo S was almost identical to the Andial in the mods it received. It's a mystery as almost everything I've read about the Turbo S engine says something a little different. Here's a compilation of features but I don't know which are true (except for the first one):

*has an RS flywheel (actually has a lightweight pressure plate and dual mass flywheel)
* Revised engine management (a different EZ69 unit?)
* Polished intake ports and manifold (a clean-up or really bigger ports?)
* Bigger turbo (which one?)
* 964 profile cams
* .9 bar boost
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 12-18-2009, 08:07 AM
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