EvolutionM - Mitsubishi Lancer and Lancer Evolution Community

Notices
Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.

Cam Specs - Hard numbers, really!

Thread Tools
 
Search this Thread
 
Old May 23, 2006, 07:55 AM
  #61  
EvoM Guru
iTrader: (6)
 
Ted B's Avatar
 
Join Date: Aug 2004
Location: Birmingham, AL
Posts: 6,334
Received 59 Likes on 45 Posts
A quick analysis of Comp Cams using the info in the above link:

They've attempted to model their nomenclature after the very well known HKS cam grinds so one would be able to form rough expectations.

The overall lift is higher than the HKS equivalents, but the effective duration is slightly shorter. The Comp Cams' lifts are as follows:

264+ and 272+ - 11.0mm Int / 10.4mm Exh

280+ - 11.0mm Int & Exh


The Comp Cams' grinds use 104/112 lobe centerlines for the Int and Exh respectively. That means that when the cams are installed straight up, it's more or less like installing the respective HKS cams at +3/-1. My estimation is the Comp Cams will give a bumpier idle and bigger midrange torque than their HKS counterparts.
Last edited by Ted B; May 23, 2006 at 08:22 AM.
Ted B is offline  
Reply Like
Old May 26, 2006, 07:27 PM
  #62  
Evolved Member
iTrader: (2)
 
EVOONYOASS's Avatar
 
Join Date: Oct 2004
Location: char, NC
Posts: 1,387
Likes: 0
Received 0 Likes on 0 Posts
What about Revolver cams? Doesn't Revolver have 2 different cams or aren't they in the process of coming out with another?
EVOONYOASS is offline  
Reply Like
Old May 26, 2006, 09:07 PM
  #63  
EvoM Staff Alumni
iTrader: (66)
 
Zeus's Avatar
 
Join Date: Aug 2002
Location: Austin, TX
Posts: 5,454
Likes: 0
Received 1 Like on 1 Post
Actually there may be a few in the works from them... Buschur may know a little about that
Zeus is offline  
Reply Like
Old May 27, 2006, 07:59 AM
  #64  
EvoM Guru
iTrader: (6)
 
Ted B's Avatar
 
Join Date: Aug 2004
Location: Birmingham, AL
Posts: 6,334
Received 59 Likes on 45 Posts
Here is the updated list. Perhaps a moderator would be kind enough to update the sticky with it.



Factory EVO
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 109 deg Int /111 deg Exh
LSA - 110 deg

JDM EVO MR
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 113 deg Int /112 deg Exh
LSA - 112.5 deg


Comp Cams 264+
Advertised Duration - 248 deg Int / 248 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.8mm Int / 10.2mm Exh
Lobe Centerlines - 104 deg Int / 112 deg Exh
LSA - 108 deg
Upgraded valve springs recommended

Comp Cams 272+
Advertised Duration - 256 deg Int / 257 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.8mm Int / 10.2mm Exh
Lobe Centerlines - 104 deg Int / 112 deg Exh
LSA - 108 deg
Upgraded valve springs recommended

Comp Cams 280+
Advertised Duration - 264 deg Int / 265 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 11.0mm Int / 10.4mm Exh
Lobe Centerlines - 104 deg Int / 112 deg Exh
LSA - 108 deg
Upgraded valve springs recommended


GSC 264
Advertised Duration - 268 deg
Effective Duration - 194 deg @ 1mm
Lift - 10.6mm Int / 10.0mm Exh
Lobe Centerlines - ___ deg Int / ___ deg Exh
LSA - ___ deg
Stock valve springs OK

GSC 272
Advertised Duration - 281 deg
Effective Duration - 203 deg @ 1mm
Lift - 10.6mm Int / 10.0mm Exh
Lobe Centerlines - ___ deg Int / ___ deg Exh
LSA - ___ deg
Stock valve springs OK


HKS 264
Advertised Duration - 264 deg
Effective Duration - 206 deg @ 1mm
Lift - 10.8mm Int / 10.2mm Exh
Lobe Centerlines - 110 deg Int / 110 deg Exh
LSA - 110 deg
Stock valve springs OK

HKS 272
Advertised Duration - 272 deg
Effective Duration - 214 deg @ 1mm
Lift - 10.8mm Int / 10.2mm Exh
Lobe Centerlines - 110 deg Int / 110 deg Exh
LSA - 110 deg
Stock valve springs OK

HKS 280
Advertised Duration - 280 deg
Effective Duration - 222 deg @ 1mm
Lift - 10.8mm Int / 10.2mm Exh
Lobe Centerlines - 110 deg Int / 110 deg Exh
LSA - 110 deg
Stock valve springs OK


JUN 264
Advertised Duration - 264 deg
Effective Duration - ___ deg @ 1mm
Lift - 10.5mm
Lobe Centerlines - ___ deg Int / ___ deg Exh
LSA - ___ deg
Upgraded valve springs required

JUN 272
Advertised Duration - 272 deg
Effective Duration - 235 deg @ 1mm
Lift - 10.8mm
Lobe Centerlines - 110 deg Int / 115 deg Exh
LSA - 112.5 deg
Upgraded valve springs required


Piper Ultimate Road
Advertised Duration - 265 deg
Effective Duration - 217 deg @1mm Int / 211 deg @1mm Exh
Lift - 11.5mm Int / 10.8mm Exh
Lobe Centerlines - 108 deg Int / 107 deg Exh
LSA - 107.5
Upgraded valve springs required

Piper Rally
Advertised Duration - 265 deg
Effective Duration - 217 deg @ 1mm
Lift - 11.5mm
Lobe Centerlines - 108 deg Int / 107 deg Exh
LSA - 107.5
Upgraded valve springs required

Piper Race
Advertised Duration - 272 deg
Effective Duration - 224 deg @ 1mm
Lift - 12.0mm
Lobe Centerlines - 106 deg
LSA - 106 deg
Upgraded valve springs required


Revolver 262/264
Advertised Duration - 262 deg Int / 264 deg Exh
Effective Duration - 222 deg @ 1mm Int / 223 deg @ 1mm Exh
Lift - 11.4mm Int / 11.5mm Exh
Lobe Centerlines - 109 deg Int / 111 deg Exh
LSA - 110 deg
Upgraded valve springs required


Tomei Poncam
Advertised Duration - 260 deg
Effective Duration - ___ deg @ 1mm
Lift - 10.7mm Int / 10.2mm Int
Lobe Centerlines - 110 deg Int / 115 deg Exh
LSA - 112.5 deg
Stock valve springs OK

Tomei Procam
Advertised Duration - 280 deg
Effective Duration - ___ deg @ 1mm
Lift - 11.5mm Int / 11.5mm Exh
Lobe Centerlines - 110 deg Int / 115 deg Exh
LSA - 112.5 deg
Upgraded valve springs required
Ted B is offline  
Reply Like
Old May 30, 2006, 05:55 PM
  #65  
EvoM Guru
iTrader: (6)
 
Ted B's Avatar
 
Join Date: Aug 2004
Location: Birmingham, AL
Posts: 6,334
Received 59 Likes on 45 Posts
And here are the two Cosworth cam profiles:

Cosworth M1
Advertised Duration - 240 deg Int / 240 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.2mm Int / 10.2mm Exh
Lobe Centerlines - 107 deg Int / 113 deg Exh
LSA - 110 deg
Upgraded valve springs recommended

Cosworth M2
Advertised Duration- 252 deg Int / 246 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift- 11.0mm Int / 11.0mm Exh
Lobe Centerlines - 107 deg Int / 113 deg Exh
LSA - 110 deg
Upgraded valve springs recommended
Ted B is offline  
Reply Like
Old Jun 1, 2006, 10:09 PM
  #66  
Evolved Member
iTrader: (16)
 
Spec'd's Avatar
 
Join Date: May 2005
Location: Southern California
Posts: 1,580
Likes: 0
Received 0 Likes on 0 Posts
CROWER CAMS SPEC SHEET ...







.














.
Last edited by Spec'd; Jun 1, 2006 at 10:13 PM.
Spec'd is offline  
Reply Like
Old Jun 1, 2006, 10:25 PM
  #67  
Evolved Member
iTrader: (16)
 
Spec'd's Avatar
 
Join Date: May 2005
Location: Southern California
Posts: 1,580
Likes: 0
Received 0 Likes on 0 Posts
.


Works 269:
Duration of 269 deg ???
Duration of ___ deg @ 1mm
Lift of 10.8mm intake / 10.1mm exhaust
Stock valve springs OK ???


Where's Buddy Club Cams ?


.
Last edited by Spec'd; Jun 1, 2006 at 11:08 PM.
Spec'd is offline  
Reply Like
Old Jun 8, 2006, 12:21 PM
  #68  
Newbie
 
1_900hustler's Avatar
 
Join Date: Dec 2005
Location: alamogordo,NM
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
i bought a used evo...........how should i go about finding out if i have upgraded cams err no.... the same for my clutch..... cuz its a lil heavy ... just a lil thanx
1_900hustler is offline  
Reply Like
Old Jun 13, 2006, 05:15 PM
  #69  
Evolving Member
iTrader: (22)
 
Evo Ate's Avatar
 
Join Date: Aug 2003
Location: Apex, NC
Posts: 187
Likes: 0
Received 0 Likes on 0 Posts
Moderator: for the love of all that is good and wholesome....Make this a Sticky

Chris
Evo Ate is offline  
Reply Like
Old Jun 13, 2006, 05:29 PM
  #70  
Evolved Member
 
Evo9"Miss Rose"'s Avatar
 
Join Date: Feb 2006
Location: Oxnard Ca.
Posts: 1,137
Likes: 0
Received 2 Likes on 2 Posts
Great Info.!!! Now which too pick from??
Evo9"Miss Rose" is offline  
Reply Like
Old Jun 13, 2006, 05:33 PM
  #71  
Evolved Member
iTrader: (1)
 
SKILMATIC's Avatar
 
Join Date: Dec 2005
Location: in a jet
Posts: 1,671
Likes: 0
Received 1 Like on 1 Post
Originally Posted by Evo9"Miss Rose"
Great Info.!!! Now which too pick from??
Thats gonna be dependant on what the car is going to be used for and driving style.
SKILMATIC is offline  
Reply Like
Old Feb 21, 2007, 03:36 AM
  #72  
Evolving Member
iTrader: (26)
 
arpad's Avatar
 
Join Date: Jan 2003
Location: Pittsburgh
Posts: 261
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by SKILMATIC
Thats gonna be dependant on what the car is going to be used for and driving style.
Sorry to resurrect this thread, but I'm trying to learn as much as I can about how cam specs affect everything. Can you please provide more in-depth info or point me in the right direction?

I ran across an old thread that I can't find for the life of me now, where somebody prominent in the DSM community (possibly David Buschur?) refers to a detailed article published in a performance magazine that he wrote on this exact subject matter but he also said that he couldn't find the links to the scanned article either.
Does anybody know of that article and if it's still available somewhere online?
arpad is offline  
Reply Like
Old Feb 21, 2007, 05:30 AM
  #73  
EvoM Guru
iTrader: (6)
 
Ted B's Avatar
 
Join Date: Aug 2004
Location: Birmingham, AL
Posts: 6,334
Received 59 Likes on 45 Posts
Here is a decent one:

http://www.popularhotrodding.com/eng...ecs/index.html


And more . . .

http://www.google.com/search?q=cam+l...S&start=0&sa=N
Ted B is offline  
Reply Like
Old Feb 21, 2007, 05:55 AM
  #74  
Evolving Member
iTrader: (1)
 
tuning g's Avatar
 
Join Date: Nov 2005
Location: Florida
Posts: 312
Likes: 0
Received 0 Likes on 0 Posts
thats some great info
tuning g is offline  
Reply Like
Old Feb 28, 2007, 11:43 AM
  #75  
Evolving Member
iTrader: (8)
 
evoone's Avatar
 
Join Date: Aug 2004
Posts: 182
Likes: 0
Received 0 Likes on 0 Posts
yep.. great info
evoone is offline  
Reply Like



Advanced Search
Quick Reply: Cam Specs - Hard numbers, really!


Reply Closed Thread Share

All times are GMT -7. The time now is 03:30 AM.