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A class rule explanation

 
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twisted



Joined: 30 Mar 2014
Posts: 11
Location: whitecourt

PostPosted: Fri Sep 04, 2015 3:17 pm    Post subject: A class rule explanation Reply with quote

Hi all

I have been trying to figure out the 1.8 x cubic inch ratio for A class engines? Is there a formula to calculate these numbers?
For example if I had a 376cubic inch engine what size of supercharger would be the maximum size aloud.

Thanks for your time.[/code]
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Will R



Joined: 31 Jul 2005
Posts: 677
Location: NWT/Alberta

PostPosted: Fri Sep 04, 2015 5:12 pm    Post subject: Reply with quote

Doesn't matter the size of supercharger . If your engine is supercharged it would be 1.8 x 376ci which is 676.8 much higher than the 470ci max for A class you would have to run unlimited
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MISSBHAVEN



Joined: 20 Jun 2005
Posts: 317
Location: Grande Prairie, Alberta

PostPosted: Sat Sep 05, 2015 11:47 am    Post subject: Reply with quote

It means that if you want to run forced induction in "A" Class which is max 470 ci, either turbo or supercharged, the largest FI size engine you can run can't exceed 470 ci/1.8 = 261.1 cubic inch.
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twisted



Joined: 30 Mar 2014
Posts: 11
Location: whitecourt

PostPosted: Mon Sep 07, 2015 3:12 pm    Post subject: Reply with quote

OK thank you for explaining this much appreciated
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