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Aftermarket exhaust cam?

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Aftermarket exhaust cam? Aftermarket exhaust cam?
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Old 03-31-2011, 09:56 PM   #1 (permalink)
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Old 04-01-2011, 12:00 AM   #2 (permalink)
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Quote:
Originally Posted by Jordo! View Post
But... if you can adjust overlap and duration, why would we even need a different cam (well, whenever we can, that is)?

All that extra lift that's mechanically possible should mean some nice potential gains in top end power...

what he said
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Old 04-01-2011, 12:17 AM   #3 (permalink)
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Originally Posted by Nissanboy View Post
what he said
Because the exhaust cam is not variable as VVEL only controls the intake side of the engine. Also, the VVEL mechanism can provide very aggressive intake valve lift while the exhaust cam is mild in comparison.

What Phimosis proposed is to install a more aggressive exhaust cam to more closely match the already aggressive VVEL intake lift and duration.
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Old 04-01-2011, 12:34 AM   #4 (permalink)
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Yeah, but controlling overlap and duration from intake side will be more than half the battle without opening the head...
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Old 04-01-2011, 06:55 AM   #5 (permalink)
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soon enough i plan on opening the head anyways, just waiting for the aftermarker to keep up with my thoughts and ideas.
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Old 04-01-2011, 12:50 PM   #6 (permalink)
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I'm just saying, we have an adjustable set of parameters and a non adjustable one that requires fabrication... seems to the first goal should be dealing with the first one and then someone can worry about designing a new exhaust cam.
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Old 02-13-2012, 07:36 PM   #7 (permalink)
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So, mega bump from the dead.. Saw this on RHDJapan's FB today.

JUN AUTO - JUN AUTO JAPAN - HOT NEWS
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Old 02-15-2012, 10:15 AM   #8 (permalink)
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So, mega bump from the dead.. Saw this on RHDJapan's FB today.

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Def interesting, who's going to be the first to try
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Old 02-13-2012, 07:44 PM   #9 (permalink)
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Interesting.
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Old 02-13-2012, 07:51 PM   #10 (permalink)
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Would have been better if they compared stock vs cams only. Some of that power is coming from the higher compression 12.3:1 pistons... and bigger injectors.. and tune..
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Old 02-13-2012, 07:51 PM   #11 (permalink)
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Very interesting. Looks like a 30HP bump
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Old 02-13-2012, 07:56 PM   #12 (permalink)
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This could help! Can't wait for more info.
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Old 02-13-2012, 08:04 PM   #13 (permalink)
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Nice to know someone is on this project. Still I agree with the previous comments, hard to tell how much the cams add when you are running all the other major engine mods.
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Old 02-13-2012, 08:13 PM   #14 (permalink)
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Nice. Who's gonna be the first.
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Old 02-13-2012, 08:14 PM   #15 (permalink)
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Nice. Who's gonna be the first.
Well first we need a vendor to get them.
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