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B20Vtec, Blox B, and intake valve closing ABDC questions...

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Old Nov 26, 2006 | 11:10 AM
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Default B20Vtec, Blox B, and intake valve closing ABDC questions...

I'm trying to calculate my dynamic c/r and have questions.

1. Is there a formula to find intake valve closing ABDC, in degrees, using my camshaft specs?

2. Does anyone know, more or less, at what c/r the Blox B's like to shine?
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Old Nov 26, 2006 | 02:57 PM
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Default Re: B20Vtec, Blox B, and intake valve closing ABDC questions... (MARVNVRAM)

Call blox, they will help you out.
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Old Dec 2, 2006 | 03:31 PM
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Default Re: B20Vtec, Blox B, and intake valve closing ABDC questions... (Natural Aspirations)

Ok, but what about generally speaking....regardless of the manufacturer, as long as I have the specs there's no way to calculate this? Or would I need something like a degree wheel and go from there to find this out?

Ninja Edit: here's the calculator I'm using if it helps: http://www.wallaceracing.com/dynamic-cr.php
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Old Dec 6, 2006 | 02:19 PM
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Default Re: B20Vtec, Blox B, and intake valve closing ABDC questions... (MARVNVRAM)

anyone?
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Old Dec 6, 2006 | 02:45 PM
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Default Re: B20Vtec, Blox B, and intake valve closing ABDC questions... (MARVNVRAM)

Call BLOX, they should be able to give you the numbers. You need primary and secondary closing events as you do have more than one cam profile in a VTEC.
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Old Dec 6, 2006 | 02:55 PM
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Default Re: B20Vtec, Blox B, and intake valve closing ABDC questions... (DonF)

52 ABDC at 0.050" lift would be a number that would work provided you can do all of the following:

Properly set up a degree wheel accurately dialed to read zero TDC when your #1 cyl. piston is at TD, axially align your indicator to your valve, locked VTEC, Zero Lash, timing belt installed as it would be when the engine is running, check and correct for acceptable v-v and p-v clearances.
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Old Dec 6, 2006 | 04:11 PM
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thanks for the help
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