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Why is my b16 Timing so far off?

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Old May 6, 2003 | 06:29 AM
  #1  
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Xsi
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Default Why is my b16 Timing so far off?

I have adjusted my cam gears to +1 intake -1 exhaust, so I went and bought a timing light to set it properly.
I warmed the car up and jumped the connector in the passengers kick panel then I loosened the distributer bolts.
I connected the light to cylinder 1 closest to the crank pulley end then pointed the light along the plastic pointer on the block and moved the distributer until it lined up with the middle of the three marks on the crank pulley.
(I also rolled up my sleeves so I didn't catch them in a cam gear )

The trouble is, where it lines up, the distributer is almost completely retarded which seems odd since I have only advanced the intake cam 1 degree. Also, the car runs like crap with a fluctuating idle I didn't have before, it was still running badly after I reset the ECU.
Can someone tell me what I did wrong or what I should be doing?
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Old May 6, 2003 | 07:09 AM
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Default Re: Why is my b16 Timing so far off? (Xsi)

When you advance the intake cam, you also advance the ignition timing. For every 1 degree of cam timing advance, you get 2 degrees of ignition timing advance.

Is +1 and -1 the number of cam gear marks you moved? Usually every mark is 2 degrees of cam timing.

Put every back to the way it was and see if it goes back to the way it was before.
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Old May 6, 2003 | 07:56 AM
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Default Re: Why is my b16 Timing so far off? (IN VTEC)

Nice sig
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Old May 6, 2003 | 04:31 PM
  #4  
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Xsi
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Default

OK, thanks for that. Do you know if thats the way it is for Skunk2 cam gears?
So it's possible thats just where my timing will be set?
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Old May 6, 2003 | 04:46 PM
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Default Re: (Xsi)

i think one degree is one degree. 1 degree on the cam is 1/2 degree on the crank, though
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Old May 6, 2003 | 05:35 PM
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Default Re: (1_bad_EF)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1_bad_EF &raquo;</TD></TR><TR><TD CLASS="quote">i think one degree is one degree. 1 degree on the cam is 1/2 degree on the crank, though</TD></TR></TABLE>
Why don't you go back and check.
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Old May 6, 2003 | 05:37 PM
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Default Re: (Xsi)

Yes it is that way with the Skunk2 gears.

I checked the degrees per mark for the Skunk2's using a a couple of pointers and a degree wheel.

Every 4 degrees of crank rotation moves the cam gear one mark.
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Old May 7, 2003 | 05:32 AM
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Default Re: (1_bad_EF)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1_bad_EF &raquo;</TD></TR><TR><TD CLASS="quote">... 1 degree on the cam is 1/2 degree on the crank, though</TD></TR></TABLE>
No, the crank moves twice as fast as the cam. So 1 degree on the cam is 2 degrees on the crank.
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