cyl.pressure/comp. ratio
Thread Starter
Burning Brakes
Joined: Jun 2011
Posts: 817
Likes: 11
From: lewisburg wv
cyl.pressure/comp. ratio
Anyone have any Ideas how cyl. pressure relates to C.R.? I know very little about my 350 other than it has been bored .040 and has a slightly lumpy cam. The pressure is 200 psi. I am trying to get a rough estimate what the c.r. is.
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
I did a Google search for: compression ratio cylinder pressure.
Here is a link to one of the articles I found.
http://www.pumaracing.co.uk/comp.htm
Go down the page to this paragragh:
So What Cranking Pressure Can We Expect To See Then?
That should tell you what you need to know. BTW, it only took me about 3 minutes to find this info using Google, you should give it a try.
Scott
Here is a link to one of the articles I found.
http://www.pumaracing.co.uk/comp.htm
Go down the page to this paragragh:
So What Cranking Pressure Can We Expect To See Then?
That should tell you what you need to know. BTW, it only took me about 3 minutes to find this info using Google, you should give it a try.
Scott
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Cold cranking pressure relates to the combo of CR & cam, and gives a rough indication of an engine's DCR (Dynamic CR). Typically, the more cam the lower cranking pressure with the same CR. Likewise, more CR with the same cam typically means more cranking pressure. Hard to wager a guess without knowing something of either the cam or CR, but anything over ~180 psi cranking pressure is starting to push it for most pump-gas builds. Hope that helps.
TSW
TSW
Instructor
Joined: Jun 2011
Posts: 183
Likes: 1
From: Litchfield CT
excellent article
I did a Google search for: compression ratio cylinder pressure.
Here is a link to one of the articles I found.
http://www.pumaracing.co.uk/comp.htm
Go down the page to this paragragh:
So What Cranking Pressure Can We Expect To See Then?
That should tell you what you need to know. BTW, it only took me about 3 minutes to find this info using Google, you should give it a try.
Scott
Here is a link to one of the articles I found.
http://www.pumaracing.co.uk/comp.htm
Go down the page to this paragragh:
So What Cranking Pressure Can We Expect To See Then?
That should tell you what you need to know. BTW, it only took me about 3 minutes to find this info using Google, you should give it a try.
Scott
That was an excellent article. I'm sure the OP appreciates the info and the link.
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
I did a Google search for: compression ratio cylinder pressure.
Here is a link to one of the articles I found.
http://www.pumaracing.co.uk/comp.htm
Go down the page to this paragragh:
So What Cranking Pressure Can We Expect To See Then?
That should tell you what you need to know. BTW, it only took me about 3 minutes to find this info using Google, you should give it a try.
Scott
Here is a link to one of the articles I found.
http://www.pumaracing.co.uk/comp.htm
Go down the page to this paragragh:
So What Cranking Pressure Can We Expect To See Then?
That should tell you what you need to know. BTW, it only took me about 3 minutes to find this info using Google, you should give it a try.
Scott
Scott
Thread Starter
Burning Brakes
Joined: Jun 2011
Posts: 817
Likes: 11
From: lewisburg wv
Well, it looks like I have something around 10/1. Thanks for doing my resherch for me. Leaves more time for tuning the new set-up and drinking beer. Don't worry about the sarcasm, it's one of my better traits.
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
