Degreeing cams

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phalcrow

New Member

Oct 24, 2006

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Ventura, CA

Oct 24, 2006

#1

• Oct 24, 2006

• #1

Does anyone have any good information or links on how to degree cams so I don't ruin a perfectly good set of vales..... again.

 

XtorT'r

New Member

Jun 11, 2003

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Minnesota, YAAA

Oct 24, 2006

#2

• Oct 24, 2006

• #2

I think there was some info on that in my MM&FF mag that came yesterday.

 

'01 Steed

Founding Member

Aug 2, 2002

482

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Michigan

Oct 24, 2006

#3

• Oct 24, 2006

• #3

go over to MD. go into the "general tech and frequently asked questions" forum in the tech section. There's a sticky you should read.

BTW, it is absolutely RIDICULOUS that you can't even post the name of another site on this board!! That is Bull!! What is Stangnet afraid of????

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

10,633

7

89

the people's republic of massachusetts

Oct 24, 2006

#4

• Oct 24, 2006

• #4

Did you take the heads off yet and figure out what happend?

 

fastangboi

My first set of nuts vibrated themselves off.

Jul 26, 2006

274

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0

Slowville

Oct 24, 2006

#5

• Oct 24, 2006

• #5

is this just me. i get half way thorugh the directions to degree a cam and i get a headache.

 

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SilverBullet00

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Jul 5, 2004

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Wichita, KS

Oct 24, 2006

#6

• Oct 24, 2006

• #6

I might have to pick up a copy of MM & FF, I need a better idea of how to do it....

 

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phalcrow

New Member

Oct 24, 2006

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Ventura, CA

Oct 24, 2006

#7

• Oct 24, 2006

• #7

Ok, cool. Thanks for the advice. I'm picking up a new copy of MM&FF tonight. I'm taking the heads off this week to inspect the damage. I may be looking for new heads and pistons soon At least this will give me an excuse to go ported heads and forged parts.

 

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Saleen4971

New Member

Mar 26, 2003

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Setauket, LI

Oct 24, 2006

#8

• Oct 24, 2006

• #8

fastangboi said:

is this just me. i get half way thorugh the directions to degree a cam and i get a headache.

Click to expand...

yeah, i had a friend of mine walk me through it the first time, its not too bad once you get the hang of it

 

DTMach1

New Member

Jun 14, 2004

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Virginia Beach, VA

Oct 26, 2006

#9

• Oct 26, 2006

• #9

I think fidanza sells adjustable cam gears...might make degreeing them a little easier!

 

fastangboi

My first set of nuts vibrated themselves off.

Jul 26, 2006

274

0

0

Slowville

Oct 27, 2006

#10

• Oct 27, 2006

• #10

is there any advantage to degreeing? y cant you just drop the cams in and make sure the chain and notches match up?

 

'01 Steed

Founding Member

Aug 2, 2002

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Michigan

Oct 27, 2006

#11

• Oct 27, 2006

• #11

The advantage is that you'll know whether or not your valves are going to smack your pistons. Very cheap insurance.
These engines are pretty tight, tolerance wise. There is little room for error. When you add lift and duration, the tolerance envelope gets even tighter.

BTW, STAY AWAY FROM FIDANZA GEARS!! They are known to slip due to poor/lack of engineering.
As I've said before, the key on the gear is only there to facilitate quick assembly in the plant. It does NOT bear any load. The massive washer on the bolt head bears all of the load via clamp force on the gear. You can file the key down or even off to get the correct timing.

 

fastangboi

My first set of nuts vibrated themselves off.

Jul 26, 2006

274

0

0

Slowville

Oct 27, 2006

#12

• Oct 27, 2006

• #12

well do i need to degree stock cams wiht 17cc dish pistons?

 

'01 Steed

Founding Member

Aug 2, 2002

482

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Michigan

Oct 27, 2006

#13

• Oct 27, 2006

• #13

Stock cams....no. Also, the piston dish volume has nothing to do with whether or not to degree the cams. All pistons have that flat area around the outer perimeter of the deck which measures roughly 10mm wide (9-12 mm depending on dish volume). This is where the valves will contact the piston, not in the center portion.

 

P

phalcrow

New Member

Oct 24, 2006

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Ventura, CA

Oct 28, 2006

#14

• Oct 28, 2006

• #14

This is why you need to degree the 270 cams. I had some PTV contact and maybe screwed up my valves? I'm not sure. They look fine but can you tell just by a visual? What do you guys think I should be concerned with?

 

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tliracing

New Member

Oct 24, 2006

2

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0

Medina Texas

Oct 28, 2006

#15

• Oct 28, 2006

• #15

Degreeing advantages

fastangboi said:

is there any advantage to degreeing? y cant you just drop the cams in and make sure the chain and notches match up?

Click to expand...

It's more of necessary step than an advantageous one. If you've ever assembled a modular you'll often find a difference of 6-8 degrees during assembly which is why you need to degree these motors. Alot of the pushrod motor guys can get away with murder by not degreeing their cams, but the modular folks aren't so blessed with this.

We're going to be placing a step by step walk through on this very procedure in a language hopefully most can understand. There is more than one way to skin a cat here.

~Ty

 

DTMach1

New Member

Jun 14, 2004

240

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Virginia Beach, VA

Oct 28, 2006

#16

• Oct 28, 2006

• #16

[QUOTE='01 Steed]The advantage is that you'll know whether or not your valves are going to smack your pistons. Very cheap insurance.
These engines are pretty tight, tolerance wise. There is little room for error. When you add lift and duration, the tolerance envelope gets even tighter.

BTW, STAY AWAY FROM FIDANZA GEARS!! They are known to slip due to poor/lack of engineering.
As I've said before, the key on the gear is only there to facilitate quick assembly in the plant. It does NOT bear any load. The massive washer on the bolt head bears all of the load via clamp force on the gear. You can file the key down or even off to get the correct timing.[/QUOTE]

I knew about grinding the tooth off the stock cam gear...thanks for the tip on the fidanza junk, I'll stay away from 'um!