General Discussion Off-Topic Discussion and Enlightenment

CAM Spec help?

Thread Tools
 
Search this Thread
 
Old 09-25-2007, 06:51 PM
  #1  
3.0 BAR
Thread Starter
 
SDRAWKCAB's Avatar
 
Join Date: Jul 2006
Posts: 2,349
Default CAM Spec help?

can anyone tell me what some of this ---- means all i under stand is the valve lash and lift.

SDRAWKCAB is offline  
Old 09-25-2007, 07:07 PM
  #2  
3.0 BAR
 
RotaryGeek's Avatar
 
Join Date: Jun 2005
Posts: 2,753
Default Re: CAM Spec help?

duration is how long the valve stays open. overlap is when the intake and exhaust valves are just barely open at the same time. doesnt happen on single cams but can be benificial on dohc's.
RotaryGeek is offline  
Old 09-25-2007, 07:11 PM
  #3  
3.0 BAR
Thread Starter
 
SDRAWKCAB's Avatar
 
Join Date: Jul 2006
Posts: 2,349
Default Re: CAM Spec help?

Originally Posted by RotaryGeek
duration is how long the valve stays open. overlap is when the intake and exhaust valves are just barely open at the same time. doesnt happen on single cams but can be benificial on dohc's.
Ok then is 26.4 over lap good/

Iv been reading up and all i can find on honda cams is which ones to buy and not specs.
Im a noob at this kind of ----

ANYONE KNOW WHERE I CAN GET SOME A6 SPRINGS FOR CHEAP?
SDRAWKCAB is offline  
Old 09-25-2007, 09:07 PM
  #4  
3.0 BAR
Thread Starter
 
SDRAWKCAB's Avatar
 
Join Date: Jul 2006
Posts: 2,349
Default Re: CAM Spec help?

I guess im not alone with this kind of ----.
SDRAWKCAB is offline  
Old 09-25-2007, 09:35 PM
  #5  
3.0 BAR
 
QikEnuF's Avatar
 
Join Date: Feb 2006
Posts: 2,808
Default Re: CAM Spec help?

Dunno if it is somehow different on Honda's, but I'm pretty sure overlap happens on all motors...
I assume it's a regrind since it is from Delta, but for a turbo camshaft, might want a bit more reverse split on the duration. Reverse split means more exhaust duration than intake duration. Haven't found anything concrete on what a good turbo camshaft is (tons of opinions from different manufacturers and engine builders), but that seems to be the general consensus. Hope that helps a bit. HMT could do with a good write up on valve events and camshaft specs.
QikEnuF is offline  
Old 09-26-2007, 12:08 AM
  #6  
3.0 BAR
Thread Starter
 
SDRAWKCAB's Avatar
 
Join Date: Jul 2006
Posts: 2,349
Default Re: CAM Spec help?

Yea its a regrind from delta
i got my cam in the mail today and the duration and lift seemed a little low to me but im used to v8 cams.
Plus i wanted to know what all the other ---- meant.
OOO and its the 292 regrind which is there most rowdy cam for the a6
looking at the dam thing you can just tell the difference.
SDRAWKCAB is offline  
Old 09-26-2007, 12:12 AM
  #7  
3.0 BAR
 
QikEnuF's Avatar
 
Join Date: Feb 2006
Posts: 2,808
Default Re: CAM Spec help?

Haha yeah, big difference between the camshafts for performance V8s and I4s. Probably more used to seeing something along the lines of 232/238 .588/.611" on a V8. A lot of those extra numbers on the cam card are just valve event stuff, lots of detailed info about the cam.
QikEnuF is offline  
Old 09-26-2007, 03:16 AM
  #8  
0.0 BAR
 
45psi's Avatar
 
Join Date: Feb 2003
Posts: 0
Default Re: CAM Spec help?

i've been to delta and gotten their regrind. its a kick in the *** if you got the "best grind for a turbo" cam and have a turbo on your car.
45psi is offline  
Old 09-26-2007, 05:24 AM
  #9  
0.0 BAR
 
Bone1's Avatar
 
Join Date: Jan 2005
Posts: 0
Default Re: CAM Spec help?

A) Delta doesn't do Honda regrinds
B) that spec sheet is NOT for a SOHC motor.

The RAR numbers are a dead giveaway.

The column of numbers I fully understand........

Name:  TDC.jpg
Views: 10
Size:  68.9 KB

Name:  Wideopen.jpg
Views: 10
Size:  68.8 KB

Name:  camchecker1.jpg
Views: 10
Size:  59.6 KB

Name:  camchecker2.jpg
Views: 8
Size:  58.8 KB
Bone1 is offline  
Old 09-26-2007, 09:51 AM
  #10  
3.0 BAR
 
Jorsher's Avatar
 
Join Date: May 2006
Posts: 5,322
Default Re: CAM Spec help?

Originally Posted by Mista Bone
A) Delta doesn't do Honda regrinds
uhhhh...sorry to burst your bubble, but yes they do.

i just got a quite on a y8 cam regrind last week. Why do you think that they dont do Honda regrinds??
Jorsher is offline  


Quick Reply: CAM Spec help?



All times are GMT -5. The time now is 04:54 AM.