Cannot set Base Timing to 10* - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-03-2015, 06:34 PM   #41
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I've never seen that
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Old 10-03-2015, 06:44 PM   #42
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Old 10-03-2015, 08:39 PM   #43
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So. After installing the new cam, the front two lobes seem to be in the correct position on both cams and the indicator pins on both seem to hold the gears in place nicely with no play.

However, when I set my timing according to the marks on the cam and crank gears my timing on the crank pulley/timing cover looks like this:



Its about 8* advanced according to the external markings while the internal marks are dead on (I locked it all in place while installing the timing cover.)

This is a different issue than I had before but I just don't feel like I can trust the marks as a true reference. I certainly don't want to call into question the accuracy of the marks on the SuperMiata pulley but its one of the only things I can think of. I'll be able to put it back together tomorrow and try to get it to fire again.
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Cannot set Base Timing to 10*-80-img_20151003_171039709_4d611dac2dac144c7c4beee6cea189c82829eaeb.jpg  
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Old 10-04-2015, 02:16 AM   #44
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Did you put something down in the #1 spark plug hole while aligning the cams to ensure the crank was at TDC?

It's possible your cams are both a few teeth off in the same direction if you didn't check the crank when setting timing.
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Old 10-04-2015, 02:24 AM   #45
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When at top dead center, the mark on the left (which was once yellow) should line up with the T. From your picture, it looks like the crank is actually 2-3* BTDC (should be 0).

At 10* BTDC, the left mark will line up at 10, and the right mark (which was once white) will line up with the T.
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Old 10-04-2015, 11:49 AM   #46
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looks spot on to me...
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Old 10-04-2015, 01:04 PM   #47
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Quote:
Originally Posted by Braineack View Post
looks spot on to me...
I guess I've just had it in my head that those marks should allign at tdc. That being said, Im fairly sure I can make the left mark line up with tdc on the timing cover with the timing I have. I'm gonna carry on and try to start it again today.
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Old 10-04-2015, 04:53 PM   #48
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The left mark should, which it appear it does...
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Old 10-04-2015, 05:00 PM   #49
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I guess it's hard to tell from the picture. But yeah the left mark should be right under "T" when you're at TDC.
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Old 10-04-2015, 05:00 PM   #50
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ITS ALIVE! And the timing is right on! Just gave it a little auto tune love and its handling it perfectly. I'm gonna change the oil and straiten some stuff out then take it for a nice easy spin.

Thank you all very much for your input and help. In conclusion, for future noobs. Be sure of your plug order, make sure your CAS is in the right orientation (plug sticking up) and check those Cam gear locator pins.

Now if anyone has any advice on seating new piston rings...
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Old 10-05-2015, 09:04 AM   #51
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Quote:
Originally Posted by Elfering View Post
Now if anyone has any advice on seating new piston rings...
Here is proper procedure on breking in a new motor.
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