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09-22-2013, 03:56 PM
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#571
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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IO is Intake Open and ICL is the Intake Center Line. The cam grinder sets the ICL for the cam and all the corresponding specs (IO, IC, EO, EC). If you advance or retard the cam then you also change all those values. So if the cam should have a -5* IO installed at 114 ICL by advancing it 2* to 112 the IO should occur at -7*.
That's why I don't see how it came in at -5 when installed at both 4 and 6 degrees advanced.
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09-22-2013, 04:15 PM
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#572
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by 94cobra69ss396
IO is Intake Open and ICL is the Intake Center Line. The cam grinder sets the ICL for the cam and all the corresponding specs (IO, IC, EO, EC). If you advance or retard the cam then you also change all those values. So if the cam should have a -5* IO installed at 114 ICL by advancing it 2* to 112 the IO should occur at -7*.
That's why I don't see how it came in at -5 when installed at both 4 and 6 degrees advanced.
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Just trying to visualize. If it's supposed to be -5* retarded andyou advance it +2*, should the result be -3*? I'm just thinking of a circle. 0* -5* +2* = -3* from 0*.
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09-22-2013, 04:55 PM
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#573
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Quote:
Originally Posted by 94cobra69ss396
That doesn't explain it. An asymmetrical lobe just has a different closing profile than opening profile. The IO would still occur at -3 if you retarded it 2 degrees and the duration at .050 would still be 215/220 no matter what the ICL is.
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Duration is open to close. So if its asymmetrical and closing sooner it would have effectively less duration. (Assuming it wasnt designed that way, and its just one or some lobes with that issue)
But I agree, changing the ICL wouldnt change duration.
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I <3 forced induction.
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09-22-2013, 06:41 PM
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#574
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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You are correct Ben.
Actually, the numbers we are talking about is at .050. So they are not from opening to closing.
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09-22-2013, 07:02 PM
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#575
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Quote:
Originally Posted by 94cobra69ss396
You are correct Ben.
Actually, the numbers we are talking about is at .050. So they are not from opening to closing.
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OIC
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I <3 forced induction.
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09-22-2013, 10:55 PM
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#576
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pain's fun, hit me again
Join Date: Sep 2009
Posts: 6,264
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I stopped trying to figure it out, it's a regrind so it's a bit different than a normal shelf cam. I do know that it came in exactly what was on the card at 4* and I checked multiple times,I even started over completely to finding TDC and it was still the same. Shawn told me why it needed to be installed at 4* and not 6* but I forgot. Other than that, I have no idea why it is the way it is. However I do owe you for the ccam.
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Quote:
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Originally Posted by Bruce Lee
Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash into his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life. Do not be concerned with escaping safely — lay your life before him
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09-24-2013, 07:53 PM
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#577
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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Any updates for us?
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09-24-2013, 11:34 PM
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#578
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pain's fun, hit me again
Join Date: Sep 2009
Posts: 6,264
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Yes, I don't have a lot of time to post though, just a couple posts from the shitter. Will update when i'm home.
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Quote:
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Originally Posted by Bruce Lee
Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash into his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life. Do not be concerned with escaping safely — lay your life before him
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09-25-2013, 11:27 AM
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#579
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pain's fun, hit me again
Join Date: Sep 2009
Posts: 6,264
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Well, I thought I had updates but Google wasn't working so I couldn't work on the car.
__________________
Quote:
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Originally Posted by Bruce Lee
Forget about winning and losing; forget about pride and pain. Let your opponent graze your skin and you smash into his flesh; let him smash into your flesh and you fracture his bones; let him fracture your bones and you take his life. Do not be concerned with escaping safely — lay your life before him
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09-25-2013, 11:29 AM
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#580
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Senior Member
Join Date: Nov 2011
Posts: 652
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Quote:
Originally Posted by Shaolin Crane
Well, I thought I had updates but Google wasn't working so I couldn't work on the car.
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Just because you google doesn't mean you know how to use the internets.
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1993 BMW 325is - DD
2006 YFZ 450 - Sand toy
2002 BMW X5 - wifes DD
Shaolin belief: Repay every wrong with forgiveness and kindness.
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