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Subject Compression Results vs Horsepower Efficiency
     
Posted by Khronik on May 01, 2015 at 11:27 PM
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Message Ive tried searching this using multiple different keywords but the closest thing im finding is how changing compression via pistons/bore/etc affects power.

What im wanting to know is how much compression affects the power of the engine.

TT Compression:
121 minimum
174 perfect

Lets say compression is low in all cylinders by about 0.09% equalling an average around 158psi of 174.

Does this mean the horsepower, is reduced by the same 0.09%? And any power gains via mods are equally affected by the same percentage?

Example using stock 300hp x 0.09% reduction totalling 273hp.
Rough estimated gains of mods:
10hp mod loses close to 1hp?
20hp mod loses around 2hp?
50hp mod loses about 5hp?

Is it as simple as that or more complicated to a point it couldnt be rough-estimated using calculations?

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1991 NA 2+2 - Pearl White - Auto (RIP)
1996 NA - Arctic White - 5Speed (SOLD)
1990 TT - Aztec Red - 5Speed (DD)

     
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