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 Post subject: Nitrous cam selection
PostPosted: Thu Feb 10, 2011 8:33 am 
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Turbo EFI
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Joined: Mon Aug 02, 2010 7:36 am
Posts: 1200
Location: Rome, GA
Car Model: 1963 Dart 270, 1980 D150
While it has been recommended that for the S/S that a narrower LSA and more intake duration than exhaust, wouldn't a nitrous motor benefit from a longer exhaust duration and maybe a bump in LSA?
Expiring minds want to know.


Last edited by drgonzo on Wed Feb 16, 2011 6:01 am, edited 1 time in total.

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 Post subject:
PostPosted: Thu Feb 10, 2011 11:15 am 
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Supercharged
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Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
That's exactly right. An earlier blow-down with the same exhaust closing and overlap means more exhaust duration and a wider lobe centerline. My street/strip nitrous engine (still not complete) has a single pattern cam on 108° lobe centers and is installed at 102° intake centerline.

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Joshua


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 Post subject:
PostPosted: Fri Feb 11, 2011 5:40 am 
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Turbo EFI
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Joined: Mon Aug 02, 2010 7:36 am
Posts: 1200
Location: Rome, GA
Car Model: 1963 Dart 270, 1980 D150
I was waiting on you to see this Josh. Thanks. Times being what they are and business slow, I have had plenty of time to THINK about my build and may take a different route than I originally planned.
What pistons are you using in your street N2O build?


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