Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

MS3 = what compression ratio?

Thread Tools
 
Search this Thread
 
Old Mar 26, 2010 | 08:51 PM
  #1  
MetallicaMatt's Avatar
Thread Starter
TECH Junkie
iTrader: (19)
 
Joined: Feb 2005
Posts: 3,155
Likes: 0
From: Sandusky, Ohio
Default MS3 = what compression ratio?

I'm running the MS3 cam in my 02 WS6...any idea where my compression ratio is?
Reply
Old Mar 26, 2010 | 10:12 PM
  #2  
Paint_It_Black's Avatar
Banned
iTrader: (1)
 
Joined: Aug 2007
Posts: 1,044
Likes: 1
From: Chi-town West Burbs
Default

Originally Posted by MetallicaMatt
I'm running the MS3 cam in my 02 WS6...any idea where my compression ratio is?
Same as it is stock.
Reply
Old Mar 26, 2010 | 10:31 PM
  #3  
Damian's Avatar
LSX Mechanic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (89)
 
Joined: Nov 2001
Posts: 10,396
Likes: 13
From: Atlanta
Default

Cams don't change static compression.
Reply
Old Mar 26, 2010 | 10:39 PM
  #4  
00fastta's Avatar
On The Tree
 
Joined: Jul 2009
Posts: 113
Likes: 0
From: DFW
Default

compression ratio has absolutely nothing to do with the valvetrain. A compression ratio is when BDC is compared to TDC. BDC in this case is a value of TDC i.e. x1:1 where 1 is the size of the space at TDC compared to the space at BDC which is denoted by x1 where 1 is the space at TDC and x is the coefficient of how many times bigger the space is at BDC. Valves do not change that. combustion chambers sizes, and stroke control that.

damn college is turning me into a nutcase.
Reply
Old Mar 27, 2010 | 01:12 AM
  #5  
MetallicaMatt's Avatar
Thread Starter
TECH Junkie
iTrader: (19)
 
Joined: Feb 2005
Posts: 3,155
Likes: 0
From: Sandusky, Ohio
Default

what are they stock? I never bothered to look it up.
Reply
Old Mar 27, 2010 | 02:17 AM
  #6  
Paint_It_Black's Avatar
Banned
iTrader: (1)
 
Joined: Aug 2007
Posts: 1,044
Likes: 1
From: Chi-town West Burbs
Default

Originally Posted by MetallicaMatt
what are they stock? I never bothered to look it up.
http://www.smokemup.com/tech/ls1.php
Reply
Old Mar 27, 2010 | 03:15 AM
  #7  
brian_rs/ss's Avatar
TECH Addict
 
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
Default

Originally Posted by MetallicaMatt
I'm running the MS3 cam in my 02 WS6...any idea where my compression ratio is?
whoa hold up...you have 2,000 something posts, a ws6 and a 730hp vette...but u didn't know that a cam has no effect on static compression?
Reply
Old Mar 27, 2010 | 09:15 AM
  #8  
butler's Avatar
9 Second Club
 
Joined: Aug 2008
Posts: 463
Likes: 0
Default

longer duration cams lower the cold cranking compression but not compression ratio.
Reply
Old Mar 27, 2010 | 09:32 AM
  #9  
MetallicaMatt's Avatar
Thread Starter
TECH Junkie
iTrader: (19)
 
Joined: Feb 2005
Posts: 3,155
Likes: 0
From: Sandusky, Ohio
Default

Originally Posted by brian_rs/ss
whoa hold up...you have 2,000 something posts, a ws6 and a 730hp vette...but u didn't know that a cam has no effect on static compression?
brain fart (plus I was looking at cranks)...posted it, left the house, then realized I was about to come home to a flame LOL
Reply
Old Mar 27, 2010 | 11:29 AM
  #10  
Damian's Avatar
LSX Mechanic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (89)
 
Joined: Nov 2001
Posts: 10,396
Likes: 13
From: Atlanta
Default

You can change cranking compression/cylinder pressure with camshafts FWIW.
Reply




All times are GMT -5. The time now is 03:30 AM.