INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

degreeing cams

Thread Tools
 
Search this Thread
 
Old Jan 24, 2006 | 09:53 AM
  #1  
jus1975's Avatar
Thread Starter
Launching!
 
Joined: Feb 2005
Posts: 280
Likes: 0
Default degreeing cams

Do you guys degree your cams and how do you do it?
Reply
Old Jan 24, 2006 | 09:58 AM
  #2  
TurboGibbs's Avatar
TECH Senior Member
iTrader: (6)
 
Joined: Jul 2005
Posts: 5,257
Likes: 0
From: Decatur, AL
Default

I typically don't unless I feel that 1 degree will make a difference in the application. With most valvetrain products being produced today by CNC I am seeing less deviation with cam timing due to machining tolerances. You can go to any cam companie's web site and they almost all have instructions on how to do it. You will need a degree wheel and a mag base dial indicator.
Reply
Old Jan 24, 2006 | 11:34 AM
  #3  
vanillagorilla's Avatar
TECH Veteran
iTrader: (1)
 
Joined: Apr 2004
Posts: 4,038
Likes: 1
From: Arizona Bay
Default

On the cam companies websites: you can also download a degree wheel, print it and then glue it to some cardboard to make your own.

If you're using the stock timing gear, you'll need some offset bushings for the cam gear to change the degree'ing of the cam. Most after market timing sets can be had in adjustable form. The cam companies can custom grind the cam with whatever advance or retard you want too, so you can just install it straight up.
Reply
Old Jan 24, 2006 | 11:41 AM
  #4  
BBT's Avatar
BBT
Teching In
 
Joined: Dec 2005
Posts: 42
Likes: 0
From: Ridgecrest, CA
Default

Originally Posted by mjhoward
I typically don't unless I feel that 1 degree will make a difference in the application. With most valvetrain products being produced today by CNC I am seeing less deviation with cam timing due to machining tolerances. You can go to any cam companie's web site and they almost all have instructions on how to do it. You will need a degree wheel and a mag base dial indicator.
I degree'd my Vinci cam just to be sure, and it was only .5 degree's off (cam card said 114' ICL and mine was 114.5'). 1 degree advance/or retard will only affect the power band by ~50 rpm...so I agree with mjhoward
Reply
Old Jan 24, 2006 | 11:47 AM
  #5  
TurboGibbs's Avatar
TECH Senior Member
iTrader: (6)
 
Joined: Jul 2005
Posts: 5,257
Likes: 0
From: Decatur, AL
Default

Originally Posted by BBT
I degree'd my Vinci cam just to be sure, and it was only .5 degree's off (cam card said 114' ICL and mine was 114.5'). 1 degree advance/or retard will only affect the power band by ~50 rpm...so I agree with mjhoward
Yeah, the last few times I have done it I was discusted at my waste of time. I now just do it if I'm changing the timing for some reason or another.
Reply
Old Jan 24, 2006 | 11:51 AM
  #6  
TurboBerserker's Avatar
I AM A MOTHERF*CKER
iTrader: (1)
 
Joined: Aug 2004
Posts: 7,132
Likes: 1
Default

Agreed. The only time I would degree a cam these days is if I had a cam that wasn't specifically what I wanted. Then again, cams are cheap... Might as well get a custom grind with exactly what you want.
Reply
Old Jan 24, 2006 | 12:54 PM
  #7  
vanillagorilla's Avatar
TECH Veteran
iTrader: (1)
 
Joined: Apr 2004
Posts: 4,038
Likes: 1
From: Arizona Bay
Default

Its good to play around with if you have infinite track or dyno time and you're trying to obtain the best performance possible. A 2-piece timing cover is almost necessary at that point. It seems like you only see it played with on engine dyno's though. It would be a PITA in the vehicle.
Reply
Old Jan 24, 2006 | 06:43 PM
  #8  
bluecajun5.3's Avatar
11 Second Truck Club
20 Year Member
iTrader: (31)
 
Joined: Jan 2005
Posts: 5,861
Likes: 0
From: Breaux Bridge, LA
Default

i've never degreed a cam, old school small block or genIII
Reply
Old Jan 24, 2006 | 07:52 PM
  #9  
MrDestinE's Avatar
TECH Resident
 
Joined: May 2004
Posts: 782
Likes: 0
From: Baytown
Default

I have always degreed the cam... I agree that most of the time it is a waste of time, however I have found an occasional glitch were it was considerably off. I may have a higher incident rate since I do that for a living but the incident rate is probably less than .1 %

TJ
Reply
Old Jan 24, 2006 | 08:30 PM
  #10  
AintNoHo's Avatar
Launching!
 
Joined: Dec 2005
Posts: 230
Likes: 0
From: San Diego,CA
Default

I have never understood the need to degree a cam. Isn't that what you're paying the cam company to do? I don't recheck my crank balance, head deck flatness, or rocker ratio. Why should I have to recheck the cam? And if it was significantly off, would I want that company to make me another one? No, I don't degree, I install it straight-up the way I ordered it.
Reply



All times are GMT -5. The time now is 10:10 PM.