Quote:
Originally posted by Dougster
Yes, I thought it was also 88 that had a bump in HP before the larger 2.7 came out in 89.
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I have always heard that there were two power bumps for the 2.5 litre. One in '88 and one sometime before. The '87 924S has the first 944 engine, which was not as powerful as the engine in the '87 944. In '88 the 944 engine power was bumped and the 924S got that engine as well (presumably to get rid of the extra cost from producing two nearly-but-not-quite-identical engines).
That's why the '87 924S is often said to have a "de-tuned" 944 engine. It's not really "de-tuned", just an older spec.
However, checking the comparison done in the October 1987 Road and Track, both the 924S and the 944 are listed as having the same engine.
Add another chapter in the wonderfully confusing book of "Which spec numbers are real for this Porsche".