4AGE 16v N/A project

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4AGE 16v N/A project

01-08-2009, 12:31 AM

Post: #35

Project D Offline

Purist

Posts: 992
Joined: Dec 2006
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12.5bar -> something like 8.34:1 (dynamic compression)
but you can not from a pressure to get a compression ratio.
sorry I'm not good enough in English to explain why.

the only way to know your compression ratio is to measure the volume of your combustion chamber :wink:

The formula to know the compression ratio is:
(V+v)/v
V= volume at BDC. (396.78cc for a stock 4age with Ø81mm piston)
v= volume at TDC. Your combustion chamber in cc (47.24cc for a stock engine with original head gasket)

(396.78+47.24)/47.24 = 9.4 Hurray!

The formula for "static" compression ratio is realy easy, but the one for dynamic compression ratio is realy not simple Tongue

that why i make this for you:
Dynamic compression ratio calculator
Enjoy Thumbs up!

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Messages In This Thread

4AGE 16v N/A project - tolisspi - 11-16-2008, 10:40 AM

[] - apardal - 11-16-2008, 04:32 PM

[] - firehawk - 11-16-2008, 11:48 PM

[] - tolisspi - 11-17-2008, 08:15 AM

[] - corolla4agze - 11-17-2008, 08:28 AM

[] - tolisspi - 11-17-2008, 10:43 AM

[] - corolla4agze - 11-17-2008, 10:58 AM

[] - ZDoman - 11-18-2008, 10:42 AM

[] - corolla4agze - 11-18-2008, 10:52 AM

[] - tolisspi - 11-22-2008, 09:25 AM

[] - gon - 11-22-2008, 11:28 AM

[] - tolisspi - 11-22-2008, 06:18 PM

[] - tolisspi - 11-22-2008, 08:16 PM

[] - firehawk - 11-22-2008, 08:17 PM

[] - tolisspi - 11-22-2008, 08:50 PM

[] - corolla4agze - 11-22-2008, 09:13 PM

[] - tolisspi - 11-29-2008, 07:28 PM

[] - MartinS - 11-29-2008, 08:17 PM

[] - tolisspi - 11-30-2008, 12:44 AM

[] - tolisspi - 12-07-2008, 10:45 AM

[] - Allexz - 12-07-2008, 01:02 PM

[] - tolisspi - 12-27-2008, 12:45 PM

[] - tolisspi - 01-04-2009, 12:30 PM

[] - ZDoman - 01-04-2009, 01:27 PM

[] - ZDoman - 01-04-2009, 01:38 PM

[] - tolisspi - 01-04-2009, 01:43 PM

[] - ZDoman - 01-04-2009, 02:00 PM

[] - tolisspi - 01-05-2009, 08:25 PM

[] - [Walaki]D`Lair - 01-06-2009, 02:29 AM

[] - SekiguchiUeno - 01-06-2009, 02:55 AM

[] - Project D - 01-06-2009, 04:12 AM

[] - tolisspi - 01-06-2009, 11:26 AM

[] - Project D - 01-07-2009, 12:57 AM

[] - tolisspi - 01-07-2009, 10:09 PM

[] - Project D - 01-08-2009 12:31 AM

[] - tolisspi - 02-01-2009, 10:00 AM

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