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Mod-O-Matic (beta!): Please vote with care. You must be logged in to use Mod-O-Matic Move post to: For Sale | Group Buy | Off Topic | NWS/Adult    Remove due to Spam/Troll | Prohibited       Highlight as: Informative | Success Story
 
Author:  
papajetta on 2005-04-19 at 20:25:38(posted from: Host: ool-44c7ccb6.dyn.optonline.net IP: 68.199.204.182) 
    
Subject:  
debate: higher compression ratio vs higher boost (1638 views) (4278 thread views) 
Message: i have an e34 and i have come to a cross road
should i lower my compression ratio ( to say 8:1 ) to run more boost
or
should i keep high compression ( 9:1 ), and run less boost

how would i be able to make the most power
my end goal is putting 350 - 400 rwhp.
but i dont want to go nuts on the engine changing pistons and rods,

just to put some comparative numbers up front : (dyno sheets ive seen )

89 535( 9:1 ) @10psi = 309rwhp intercooled
85 535( 8:1 ) @18psi = 318rwhp non

these are the closest figures ive seen producing similar power, similar motor, different CmpRtio.
 
 

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