Interesting cam break-in

crushnut

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Aug 15, 2004

#1

• Aug 15, 2004

• #1

Has anyone ever heard of breaking a new cam in by operating it at 2000rpm for 10min, 1200rpm for 10min, and 1600rpm for another 10min? I was always told and read to do it a 2000rpm for 20min. Can anyone back this up or does it not matter.

Thanks

 

gingerbreadman

Only half-baked

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Jan 17, 2002

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Go ahead, call me cheaky

Aug 15, 2004

#2

• Aug 15, 2004

• #2

crushnut said:

Has anyone ever heard of breaking a new cam in by operating it at 2000rpm for 10min, 1200rpm for 10min, and 1600rpm for another 10min? I was always told and read to do it a 2000rpm for 20min. Can anyone back this up or does it not matter.

Thanks

Click to expand...

I remember finding so many different ways of doing it when i was researching after installing my cam...

personnaly i say go with what the cam manufacturer suggests after all they are warrentying and standing behind it right???




-gbm-

 

PoliceInterceptor

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Aug 15, 2004

#3

• Aug 15, 2004

• #3

Current thinking is to vary RPM, but never let it drop below a certain level. (1500-2000 depending on who or what company you are talking with.)

Also if your cam kit did not come with an oil additive (or the company doesn't sell one, Both Crane and Comp do) add a can of GM EOS (Engine Oil Supplement) to the oil before firing it off.

HTH

 

crushnut

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Aug 16, 2004

#4

• Aug 16, 2004

• #4

PoliceInterceptor said:

Also if your cam kit did not come with an oil additive (or the company doesn't sell one, Both Crane and Comp do) add a can of GM EOS (Engine Oil Supplement) to the oil before firing it off.

HTH

Click to expand...

If you dont mind me asking, what does that stuff do? And where can you get it.

Thanks

 

R

Ronstang

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Apr 4, 2004

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Aug 16, 2004

#5

• Aug 16, 2004

• #5

The best way to break in a camshaft is to follow the manufacturer's suggestion regardless of what anyone else tells you.

 

PoliceInterceptor

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Aug 16, 2004

#6

• Aug 16, 2004

• #6

crushnut said:

If you dont mind me asking, what does that stuff do? And where can you get it.

Thanks

Click to expand...

The story is that it contains zink which has been removed from most oil, and is said to be an EP lubricant.

Isky and Lunati specifically say use GM EOS, Crane and Comp have their own "Break In lube".

I agree to follow the cam manufacturers directions, most of them say not to let it drop below a specified RPM for 20-30 minutes. Varing the RPM above that RPM still follows the directions.

What kind of cam are you breaking in?

 

T

tjm73

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Aug 16, 2004

#7

• Aug 16, 2004

• #7

Or you can build (or retrofit) a roller cam. No cam break in required. And you get a little more power.

 

crushnut

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Aug 16, 2004

#8

• Aug 16, 2004

• #8

PoliceInterceptor said:

I agree to follow the cam manufacturers directions, most of them say not to let it drop below a specified RPM for 20-30 minutes. Varing the RPM above that RPM still follows the directions.

What kind of cam are you breaking in?

Click to expand...

Nothing yet, just researching

Thanks

 

ratio411

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Aug 16, 2004

#9

• Aug 16, 2004

• #9

I don't like the sound of that break-in...

The reason they tell you not to let it fall below 2000 rpm for 20+ minutes is because the cam is lubed by oil thrown from the rotating parts. If you are below that rpm, not much oil is thrown on the cam during this critical time.
Dave

 

crushnut

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Aug 23, 2004

#10

• Aug 23, 2004

• #10

PoliceInterceptor said:

The story is that it contains zink which has been removed from most oil, and is said to be an EP lubricant.

Isky and Lunati specifically say use GM EOS, Crane and Comp have their own "Break In lube".

Click to expand...

Does anyone know where you can buy this stuff ?

Thanks

 

PoliceInterceptor

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Aug 23, 2004

#11

• Aug 23, 2004

• #11

crushnut said:

Does anyone know where you can buy this stuff ?

Thanks

Click to expand...

EOS at any General Motors dealer.

Crane and comp any where you can get the cam.

 

351LX

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Aug 23, 2004

#12

• Aug 23, 2004

• #12

I just bought GM EOS a couple weeks ago from the parts counter at the local GM dealer.It cost about 6 or 7 dollars for a small can.The parts guys said a lot of people add it to their oil at every change so it it common.