Subject	Definitely agree! More compression is usually better..
Posted by	flashstar on February 12, 2013 at 2:06 PM
	This message has been viewed 172 times.
In Reply To	I went 9.2:1 compression. posted by Woody75 (Denver) on February 12, 2013 at 10:16 AM
Message	You will burn gas more efficiently at the expense of more friction and heat. I'd just get rid of the flashing in your coolant passages, then change your oil pump out for a new one. Make sure that your tune is spot on and don't recklessly increase boost on the fly. My 2-stroke bike runs well with a 11.5:1 compression ratio, however I make sure to keep the AFR rich. I don't know about 4 stroke engines but a study I read argues that anything up to 12.5:1 compression ratios improves performance in gasoline 2 stroke engines. The question is: are you capable of tuning and dealing with a high compression engine?
Follow Ups	8.1 compression - Properstyle 06:50:01 02/10/13 What kind of feedback are you looking for? - white22sky 09:43:22 02/10/13 Re: What kind of feedback are you looking for? - Properstyle 11:10:19 02/10/13 the lower your compression ratio is the more space there - Zvil (FL) 12:19:30 02/10/13 I think you'll find most have stuck with stock - white22sky 12:27:38 02/10/13 Re: I think you'll find most have stuck with stock - Properstyle 12:46:33 02/10/13 disagree. Most people with aftermarket pistons are ~9:1 - Antihero 16:48:54 02/11/13 I was actually just looking into this. - AHos(Chicago) 15:29:14 02/11/13 I can see where the confusion is - Zvil (FL) 09:47:10 02/12/13 I went 9.2:1 compression. - Woody75 (Denver) 10:16:55 02/12/13 Definitely agree! More compression is usually better.. - flashstar 14:06:32 02/12/13 yep - aliaZ 21:29:51 02/12/13 I actually just sent you an email about this. - AHos(Chicago) 23:13:13 02/12/13 yep. I'll respond later... (n/m) - aliaZ 06:48:50 02/13/13 No rush. Just checking. Thanks! (n/m) - AHos(Chicago) 09:35:35 02/13/13 Ok no one argues that. - white22sky 09:39:55 02/13/13 I maxed my turbos out (28psi) and I was still fine. - Woody75 (Denver) 09:54:39 02/13/13 28psi? was that on pump gas? (n/m) - Zvil (FL) 10:16:01 02/13/13 No (n/m) - Woody75 (Denver) 10:21:58 02/13/13 28PSI is in the area I was thinking. - white22sky 11:02:44 02/13/13 My reasoning would lead me to believe - Zvil (FL) 12:12:54 02/13/13 ALSO - Zvil (FL) 12:23:48 02/13/13 Yes. - white22sky 13:09:44 02/13/13 yep, and it's also the same reason in a roundabout way - Zvil (FL) 20:01:02 02/13/13 So lower compression makes a more efficient turbo, generally - white22sky 10:22:26 02/14/13 Re: Ok no one argues that. - Properstyle 06:40:39 02/18/13 With today's turbos and breather mods, these cars make boost - zellamay 10:41:13 02/12/13
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