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post #1 of (permalink) Old 06-20-2002, 08:14 AM Thread Starter
 
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degree my cam in?

what exactly does this mean?
how do I do It?
I bought a cam sproket and I was told to do this.

Johnny C
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post #2 of (permalink) Old 06-20-2002, 02:51 PM
 
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Re: degree my cam in?

I bought a degree wheel so I could "properly" set up my cam. I ended up setting it to 0 Deg. to start and advancing or retarding to best suit my rpm needs. This took a few hours, but it is well worth it!
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post #3 of (permalink) Old 06-20-2002, 03:16 PM
 
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Re: degree my cam in?

You need a tool called a degree wheel and the specifcations to the cam. The degree wheel will/should have instructions on how to use it. Basicaly your trying to get the cam and crank rotating exactly where the specs say they should, in relationship to each other. With at least 4 tolerances to be factored in, its a rare engine the hits the mark exactly. Most are a degree or so off and could be as much as 3 or more off pretty easy. This mod, plus getting the dist gear shimed properly, can make more HP that you would belive possible, all things considered. Without it the bolt on stuff is pretty iffy as to results.

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post #4 of (permalink) Old 06-20-2002, 04:37 PM Thread Starter
 
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Re: degree my cam in?

Hmmmm.
Ok
so where do I get the specs on a stock 88.5 1300 cam?
Johnny C
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post #5 of (permalink) Old 06-20-2002, 04:41 PM
 
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Re: degree my cam in?

Do you have the FSM? I can look at mine tonight, but I think the latest I have is the 88.

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post #6 of (permalink) Old 06-21-2002, 11:11 AM Thread Starter
 
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Re: degree my cam in?

I dont have any manuals.

Johnny C
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post #7 of (permalink) Old 06-21-2002, 08:31 PM
 
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Re: degree my cam in?

Sorry johnny, The FSM didn't have the timing for the cam. Look on isky web site and see if he publishes the timing spec.

-Outlaw, Why? Because it can!
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post #8 of (permalink) Old 06-22-2002, 04:52 AM
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Re: degree my cam in?

As I'm sure you know the "curves" for an engine's torque and HP have peaks at certain RPM's. Some of that "curve" is determined by the cam.

Degreeing is just the act of getting the cam dead on the original specs the cam grinder wanted.

Thing's never are perfect, the cam ends up slightly ahead or behind due to tolerances of manufacture.
When all the tolerances end up in the same direction, like all plus in +/-, then the "peaks" curves get changed slightly. The cam lobes can be off slightly, the cam index - slot/peg etc, timing gears and indexes all can be off just a tad.

Generally speaking a 2 degree advance in cam timing will move the peaks down, not less power, but the peaks will occur about 200 RPM lower than specs. A 2 degree retarded cam move them up about 200 RPM.

If you use quality parts, you should be very close, so degreeing really isn't all that necessary for practical purposes.

If in doubt, call any cam manufacturor's hotline.


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post #9 of (permalink) Old 06-22-2002, 08:01 AM
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Re: degree my cam in?

Everything you want to know about dialing in your camshaft.

<a target="_blank" href=http://www.cranecams.com/master/degree.htm>http://www.cranecams.com/master/degree.htm</a>
post #10 of (permalink) Old 06-22-2002, 09:57 AM
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Re: degree my cam in?

Good article.

Another one by Sig Erson Cams, now owned by Mr Gasket -- even more detail.

http://www.mrgasket.com/pdf/CamSense.pdf
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