lobe centers explained

I was reading a tutorial on cam degreeing.

It states that spreading the centers ( higher numbers), increases low speed power at the expense of some top end.

Tighening them up (low numbers) moves the power band higher in the range.

Dave you need to sraighten this out

You wrote the artical :ohmy:

It's the opposite of that more than it's just that.

Don't call your buddies on this one

I think you've been had. :woohoo:

merry Christmas Dave :laugh:

A local performance store in Fargo has a guy working for them and he's got the same mix up.

I'm not cutting you down at all

Just setting record straight for everone else that reads
your tute, and also the one on Muzzy's performance.

More porting today, every time I look at the far away photos of ported heads I get alittle more bold and a lot less intimidated.

FLOW BABY FLOW!

Racing me would be comparable to a thouroughbread racing a mule.

Just give me a little time to gather all my parts into my arms and start running down the strip. :woohoo:

Can't wait to get done monkeying around and ride the bike again.

Stage 14 porting is top secret nasa info.

If you blow up port pics to see the work, you get an image of a middle finger from inside the port.

Combinations make the motor everyone says

Well people will say anything

I'm leaning over the handle bars watching you from the moon, you'll get there one day all, I'm fabbing some tow hooks for twine so you can ride along,

MOOOO!

READ:
VARYING LOBE SEPARATION ANGLE
Tighten -/- Widen
Moves Torque to Lower RPM -/- Raise Torque to Higher RPM
Increases Maximum Torque -/- Reduces Maximum Torque
Narrow Powerband -/- Broadens Power Band
Builds Higher Cylinder Pressure -/- Reduce Maximum Cylinder Pressure
Increase Chance of Engine Knock -/- Decrease Chance of Engine Knock
Increase Cranking Compression -/- Decrease Cranking Compression
Increase Effective Compression -/- Decrease Effective Compression
Idle Vacuum is Reduced -/- Idle Vacuum is Increased
Idle Quality Suffers -/- Idle Quality Improves
Open Valve-Overlap Increases -/- Open Valve-Overlap Decreases
Closed Valve-Overlap Increases -/- Closed Valve-Overlap Decreases
Natural EGR Effect Increases -/- Natural EGR Effect is Reduced
Decreases Piston-to-Valve Clearance -/- Increases Piston-to-Valve Clearance

LOBE SEPARATION ANGLE
Above 114 Deg. = Extremely Wide
114-112 Deg. = Wide
112-110 Deg. = Moderately Wide
110-108 Deg. = Moderate
108-106 Deg. = Moderately Tight
106-104 Deg. = Tight
Below 104 Deg. = Extremely Tight

ADVANCING / RETARDING CAM TIMING
ADVANCING -/- RETARDING
Begins Intake Event Sooner -/- Delays Intake Event Closes Intake
Open Intake Valve Sooner -/- Keeps Intake Valve Open Later
Builds More Low-End Torque -/- Builds More High-End Power
Decrease Piston-Intake Valve Clearance -/- Increase Piston-Intake Valve Clearance
Increase Piston-Exhaust Valve Clearance -/- Decrease Piston-Exhaust Valve Clearance

If you think otherwise... you're wrong! :laugh: :laugh: :laugh:

Peace!

Web Cam has degreeing information on their website.

www.webcamshafts.com/

Well nads, not sure which tutorial on CAM degreeing you're referring to but as provided in my write up, all information directly from various sources such as WebCam and the complete article by Doug Meyers states as your saying mine doesn't (opposite)?

Ok, you have me lost.... see page 22...

Are you referring to power band rpm, torque, HP or something else entirely?

As for my "friends" you're referring to, the information came from other sources as mentioned inmy research trying to learn and understand CAM Degreeing for as mentioned, I was a virgin it this as well....

My friends helped me try to understand it clearer so as to possibly put in writing to help others... Nothing more then that for step by step instructions were nowhere to be found that I could find anyways.

You have a link for this other write up?

Old Man Rock wrote:

Well nads, not sure which tutorial on CAM degreeing you're referring to but as provided in my write up, all information directly from various sources such as WebCam and the complete article by Doug Meyers states as your saying mine doesn't (opposite)?

Ok, you have me lost.... see page 22...

Are you referring to power band rpm, torque, HP or something else entirely?

As for my "friends" you're referring to, the information came from other sources as mentioned inmy research trying to learn and understand CAM Degreeing for as mentioned, I was a virgin it this as well....

My friends helped me try to understand it clearer so as to possibly put in writing to help others... Nothing more then that for step by step instructions were nowhere to be found that I could find anyways.

You have a link for this other write up?[/quote

When the info stated tightening centers moves power band up in the range or similar to that.

No sweat Dave.
It was Muzzy's I think, and I don't have a link to it. I don't know how to post a link, I'm not supposed to be able to type even.

No prob amigo...

Just wanted to make sure what your write up had listed was indeed different so I could research it further in detail with Web-Cam if if required....

I just want to know this. If keep retarding the intake cam, since it would actually move in a circular direction, wouldn't it eventually end up being advanced?

How does that work? Isn't that like traveling east and eventually you end up in the west?

Or does the piston stop it from moving somehow?

Dam it NADS.. just when I thought I understood cams, you had to go and start this thread