Author Topic: S&S 600 cam?  (Read 1746 times)

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Offline Reddog74usa

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S&S 600 cam?
« on: Tuesday, July 14, 2009. 01:12:34 PM. »
What CR does this cam run best at? Noisy, quiet? TQ or HP?
« Last Edit: Tuesday, July 14, 2009. 05:42:35 PM. by Reddog74usa »
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Offline wfolarry

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Re: S&S 600 cam?
« Reply #1 on: Tuesday, July 14, 2009. 07:18:36 PM. »
That cam is standard in a 113. Likes compression & will run out good. What size motor?

Offline Reddog74usa

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Re: S&S 600 cam?
« Reply #2 on: Wednesday, July 15, 2009. 02:06:08 AM. »
113 at 11.2 CR
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Offline wfolarry

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Re: S&S 600 cam?
« Reply #3 on: Wednesday, July 15, 2009. 04:30:21 AM. »
It will hit hard. Ran one like that at the track & it was a wheelie bike. Finally got it to hook & ran 11.27. Changed some things around & got a best of 10.96 before we swapped it out. Hang on tight.

Offline Scott P

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Re: S&S 600 cam?
« Reply #4 on: Wednesday, July 15, 2009. 01:37:46 PM. »
Sold Ultra Cycles here at one time, and installed a bunch of those.
At that time the 113" had a .520" cam in them, perhaps due to C.A.R.B. requirements.
That cam does work well. 11.2 might be a tad high for that.
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Offline deathwish

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Re: S&S 600 cam?
« Reply #5 on: Wednesday, July 15, 2009. 07:47:21 PM. »
520 is an EPA compliant cam. The 600 in a 113, (standard in a normal build at about 10.2/1) if much more than 10.5/1 will give cranking issues unless you have compression releases. It will also be detonation prone when you get near 11/1. If you want to run a lot of compression try the 640 in the 11's and a 631 if you want more compression than that.

Offline Scott P

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Re: S&S 600 cam?
« Reply #6 on: Thursday, July 16, 2009. 03:39:45 PM. »
.640" at 11.7-8 from what we see. :teeth:
Scott
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Offline Reddog74usa

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Re: S&S 600 cam?
« Reply #7 on: Thursday, July 16, 2009. 04:46:19 PM. »
Was just entertainin the thought. It has a .640 in it now and does pretty good. Thanks for the replies.  :up:
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Offline 113evo1

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Re: S&S 600 cam?
« Reply #8 on: Sunday, July 19, 2009. 07:18:26 PM. »

I have a question.
I’m assuming you are running the Ultima roller rocker arm’s with 1.675.1 ratio that come with the Ultima 113 motor.
When changing to a cam such as the S&S 600 cam that has a advertised lift of .600” using the 1.625.1 S&S roller rockers, wouldn’t you add 0.050” to the lift… there by changing the lift to .650” with the duration remaining the same?

The Evo rocker arm ratio is 1.625.1
The Ultima roller rocker arm ratio is 1.675.1
The Crane roller rocker ratio is 1.750.1

Offline Reddog74usa

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Re: S&S 600 cam?
« Reply #9 on: Monday, July 20, 2009. 01:49:53 AM. »
That may be so but I'm not changing the cam as it runs great the way it is. I was just checking out the 600 and got some very good info as usuall :up:
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