Subject	Re: Compression Pressure Questions
Posted by	SactoTodd on November 04, 2006 at 8:58 AM
	This message has been viewed 41 times.
In Reply To	Compression Pressure Questions posted by canyoncarver on November 03, 2006 at 10:01 PM
Message	"I wasn't concerned with the vtc. They kick in ~3000 rpm to retard the valve timing and increase the c/r. I'm pretty sure the advanced valve timing, under 3k rpm, is utilized to lower the c/r to prevent detonation under low speed / high load operating conditions." I'm pretty sure Compression Ratio doesn't change ethier. ummmmm..can we just post about cars? (n/m) - College Boy 08:55:03 04/28/05
Follow Ups	Compression Pressure Questions - canyoncarver 22:01:17 11/03/06 I know..... replying to my own post. - canyoncarver 22:27:15 11/03/06 I don't think volume changes. (n/m) - SactoTodd 22:37:34 11/03/06 2nd (n/m) - mousersix 22:47:38 11/03/06 correct, displacement remains the same. (n/m) - Zluster(Abudan) 00:02:11 11/04/06 Re: I don't think volume changes. - canyoncarver 08:30:25 11/04/06 You're an engineer? - PennStateZ 09:56:06 11/04/06 O.k. ..... no dispute - canyoncarver 10:26:42 11/04/06 The intent of my statement was that a larger.... - canyoncarver 10:37:26 11/04/06 You're referencing pressures INSIDE the cylinder... - PennStateZ 10:55:41 11/04/06 And you can't match the pressure either. - PennStateZ 10:24:37 11/04/06 What is an insane compression ratio..... - canyoncarver 10:30:48 11/04/06 Calculate it. - PennStateZ 10:53:46 11/04/06 I will..... - canyoncarver 11:10:35 11/04/06 How are you going to tune it? - PennStateZ 11:45:32 11/04/06 24:1.... if I did that calculation correctly. (n/m) - WAGGZ 12:25:51 11/04/06 But a car without "boost" still has some sort of "PSI" - 300ZMang 00:59:39 11/04/06 Re: But a car without "boost" still has some sort of "PSI" - canyoncarver 08:51:50 11/04/06 Re: Compression Pressure Questions - SactoTodd 08:58:35 11/04/06 It is a fact.... - canyoncarver 09:21:14 11/04/06 You're changing the volumetric efficiency. (n/m) - PennStateZ 10:28:45 11/04/06 What changes the v/e given that everything else is the same? (n/m) - canyoncarver 10:32:45 11/04/06 Looking at the definition... - PennStateZ 10:47:57 11/04/06 On any i/c engine..... you improve the v/e mainly - canyoncarver 10:59:28 11/04/06 I think your whole theory is pretty far off. - Brad(RI) 13:20:07 11/04/06
Post a Followup	You cannot reply to this message because you are not logged in.