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Grunterhunter
Re: compression ratio calculations- does anybody know how to do it
#1
Home away from home
Joined:
2005/3/28 7:37
From Stray-ya
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Posts: 528
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Arrg?

Quote:
When you get a new cam with more overlap, they'll usually tell you to raise the CR, because your big cam is actually lowering your dynamic compression.


Obviously I need an education here. What your saying makes sense cos that's what people tend to do- big overlap cam shaved & polished head.

But......

My understanding was that the big cam, extractors and tuned inlet were designed for good scavenging to allow 110-120% of the swept volume into the cylinder, giving you more power when you get enough revs up for it all to start working. So you're only lowering your dynamic compression at low revs, surley its significantly raised when you are "on the cam"?

Got a good website or something that explains all this?

thanks.

Posted on: 2005/9/9 3:52
Transfer the post to other applications Transfer

Subject Poster Date
     compression ratio calculations- does anybody know how to do it datsunb120 2005/9/5 12:46
       Re: compression ratio calculations- does anybody know how to do it Psych 2005/9/5 12:51
         Re: compression ratio calculations- does anybody know how to do it dattodevil 2005/9/5 12:58
           Re: compression ratio calculations- does anybody know how to do it dattodevil 2005/9/5 13:00
             Re: compression ratio calculations- does anybody know how to do it Psych 2005/9/5 13:13
               Re: compression ratio calculations- does anybody know how to do it selaga 2005/9/6 6:04
       Re: compression ratio calculations- does anybody know how to do it pro240c 2005/9/6 7:02
         Re: compression ratio calculations- does anybody know how to do it Grunterhunter 2005/9/6 13:09
           Re: compression ratio calculations- does anybody know how to do it Grunterhunter 2005/9/6 15:11
             Re: compression ratio calculations- does anybody know how to do it mperdue 2005/9/6 23:40
               Re: compression ratio calculations- does anybody know how to do it Grunterhunter 2005/9/7 2:25
                 Re: compression ratio calculations- does anybody know how to do it mperdue 2005/9/7 5:20
                   Re: compression ratio calculations- does anybody know how to do it Grunterhunter 2005/9/7 5:43
                     Re: compression ratio calculations- does anybody know how to do it mperdue 2005/9/7 5:50
                       Re: compression ratio calculations- does anybody know how to do it 1200coupe 2005/9/7 6:14
                         Re: compression ratio calculations- does anybody know how to do it nzdatman 2005/9/7 12:05
                           Re: compression ratio calculations- does anybody know how to do it nzdatman 2005/9/7 12:27
                             Re: compression ratio calculations- does anybody know how to do it Grunterhunter 2005/9/8 8:54
                               Re: compression ratio calculations- does anybody know how to do it nzdatman 2005/9/8 12:38
                                 Re: compression ratio calculations- does anybody know how to do it Grunterhunter 2005/9/9 3:52




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