Notices
Engine Swaps, Tech & Tuning Swaps, N/A Performance, Forced Induction, Engine Management, & Troubleshooting

loss in compression = loss in how much hp?

Thread Tools
 
Old 01-27-2003, 08:05 PM
  #1  
Sportmode
Senior Member
Thread Starter
 
Sportmode's Avatar
 
Join Date: May 2002
Location: bay area, cali
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Default loss in compression = loss in how much hp?

i was wondering with say a stock 170hp usdm b18c1, how much horsepower would you lose by putting in lower compression pistons (for turbo). Say bumping the compression down to 9.0 or 8.5. Any feedback would be appreciated.
Old 01-28-2003, 03:47 AM
  #2  
TeHJuSTiN
NAM #0001
 
TeHJuSTiN's Avatar
 
Join Date: Jun 2002
Location: Cornelius, NC
Posts: 4,050
Likes: 0
Received 0 Likes on 0 Posts
Default

You usually lose 10-12hp per .5 compression lowered.
Old 01-28-2003, 04:42 AM
  #3  
Slow-N-Low
What's that smell?
 
Slow-N-Low's Avatar
 
Join Date: Jan 2003
Posts: 520
Likes: 0
Received 0 Likes on 0 Posts
Default

You put in lower-compression pistons so you can turn up the boost and make more power sooner, right?
Old 01-28-2003, 07:08 AM
  #4  
1stGenCRXer
GWAKS- Tech Geekifier
 
1stGenCRXer's Avatar
 
Join Date: Oct 2000
Location: Hampton, VA
Posts: 2,109
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally posted by Slow-N-Low
You put in lower-compression pistons so you can turn up the boost and make more power sooner, right?
Depending on the turbo you wouldn't make power sooner, but you would make more overall from higher boost, sacrificing low RPM power.
__________________
-Harry
AIM: NDcissive
CRX and Pre '92 Civic, Engine Tech and Tuning, & Track and Autocross Forum Mod




All times are GMT -8. The time now is 04:29 AM.