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camshaft degreeing question (results show retarded 1 degree?)

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Old 01-30-2013, 10:07 AM
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turbotuner20v
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Default camshaft degreeing question (results show retarded 1 degree?)

I got the following results when degreeing my cam last night. I'm just curious if people would run it as is dot to dot, or if it's worth advancing it a tooth. Or if there's a margin of error that I'm close enough not to mess with it.

Comp Cams 4796 degree kit:


gauge zeroed off the lobe:


indicator at max lift:


indicator zeroed at max lift:


.050" on the opening side:


degree wheel reading .050" on the opening side:


.050" on the closing side:


degree wheel reading .050" on the closing side:


my measurements indicate the cam is retarded 1*
Old 01-30-2013, 11:02 AM
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HOXXOH
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It's been a while, but IIRC one tooth is 7 1/2 degrees.
Old 01-30-2013, 11:17 AM
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Originally Posted by HOXXOH
It's been a while, but IIRC one tooth is 7 1/2 degrees.
ah, ok. The Car Craft article I was looking at showed the crank teeth off by 2 and they measured this as 2* advance.
Old 01-30-2013, 12:16 PM
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After looking around more, it seems that even an adjustable cam gear only has 2* increments, so I'm probably good to go. If anything, it seems that retarding 1* would help top end horsepower at the expense of low end torque, which would be fine with me.
Old 01-30-2013, 12:30 PM
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Don 79 TA
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did you only do one cyl or have you done all 8?

1 degree off isn't that bad, but you may want to check the others as well
be surprised how many cam companies pay attention to the #1 and leave the others... ummm outta spec (good reason to have the cams blueprinted, but the wait time does suck)

does Cloyes make the HEX adjust setup? perhaps that would work
or different crank/cam keys
Old 01-30-2013, 01:01 PM
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pit-man
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Originally Posted by Don 79 TA
did you only do one cyl or have you done all 8?

1 degree off isn't that bad, but you may want to check the others as well
be surprised how many cam companies pay attention to the #1 and leave the others... ummm outta spec (good reason to have the cams blueprinted, but the wait time does suck)

does Cloyes make the HEX adjust setup? perhaps that would work
or different crank/cam keys
Yeah there is all kinds of adjustable timing sets out there.
Old 01-30-2013, 01:44 PM
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SG4206
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For what's worth -
With the past dyno work I've been exposed too over the years ; we had to make + or -4 deg. changes to make a noticable change in the power band, or gain or loss in HP.
Old 01-30-2013, 01:54 PM
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Originally Posted by Don 79 TA
did you only do one cyl or have you done all 8?

1 degree off isn't that bad, but you may want to check the others as well
be surprised how many cam companies pay attention to the #1 and leave the others... ummm outta spec (good reason to have the cams blueprinted, but the wait time does suck)

does Cloyes make the HEX adjust setup? perhaps that would work
or different crank/cam keys
I just did the first one... is it worth the time to go do the other 7?
Old 01-30-2013, 01:55 PM
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Originally Posted by SG4206
For what's worth -
With the past dyno work I've been exposed too over the years ; we had to make + or -4 deg. changes to make a noticable change in the power band, or gain or loss in HP.
awesome, good to know

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