Subject	Totally agree...
Posted by	rcmadness on March 13, 2014 at 12:14 PM
	This message has been viewed 382 times.
In Reply To	In my opinion, camshaft duration plays a large roll in this. posted by LitlElvis on March 13, 2014 at 10:42 AM
Message	Raising compression is an accelerant to the combustion process. That adds heat and pressure. The time it takes to burn all the fuel/air mixture is shortened therefore it takes less crankshaft degrees to extrapolate the combustion forces. A low duration cam will hold that heat in due to the exhaust valve not opening soon enough to get rid of it. The exhaust event starts before BDC and if it doesn't start soon enough then heat in the chamber will increase making an engine detonate prematurely.
Follow Ups	Thoughts on high-compression TT's motors post MJ's monster? - ZXoltan 07:13:15 03/13/14 Ive been pondering the same thing.. - eriksu9 08:59:52 03/13/14 silly analogy. - Antihero 11:28:06 03/13/14 WTF was your dad Ron Burgundy? - LJZTT 11:41:53 03/13/14 I am simply responding to Brandons statement - eriksu9 08:51:11 03/14/14 poor analogy. fatigue vs catastrophic event - Antihero 10:16:26 03/14/14 I get what you are saying, most of us feel the same way and - LJZTT 11:39:27 03/14/14 I dont know if you know this or not, but the word - eriksu9 12:00:40 03/14/14 "When in Rome..." (n/m) - LJZTT 15:35:44 03/14/14 Remember the time I crawled out of my mom's vagina? - black300zx 07:42:15 03/15/14 I never got a reply from them on my post in the thread. - Woody75 (Denver) 09:13:51 03/13/14 big turbos let the engine make more power - Zvil (FL) 09:57:07 03/13/14 ^^^This, except for the not daily driven part. - rcmadness 11:04:04 03/13/14 Great work! What else can you tell us about the heads? - ConVerTT 11:34:57 03/13/14 tempted to leave the stock flat top pistons in my vh45dert - Zvil (FL) 11:51:14 03/13/14 I didn't see where they said they backed of the timing. - Woody75 (Denver) 12:54:16 03/13/14 Woody, the dyno isn't setup to record boost - rcmadness 13:03:18 03/13/14 The picture posted wasnt very clear. - Woody75 (Denver) 14:13:45 03/13/14 Re: Woody, the dyno isn't setup to record boost - 1blackz 15:38:08 03/13/14 Woody here are my thoughts - induetime 14:55:33 03/13/14 What are the chances that the dyno was not correct? - eriksu9 08:54:03 03/14/14 You can't really manipulate a Dynojet like that. - dogpile 09:02:05 03/14/14 smoothing was 5 (n/m) - rcmadness 11:43:31 03/14/14 If you see/listen to enough dyno's..... - The Hawk 19:15:28 03/14/14 You have to weight compression vs ignition timing vs octane - ztunerz 10:16:29 03/13/14 In my opinion, camshaft duration plays a large roll in this. - LitlElvis 10:42:20 03/13/14 this - JaffaUK 11:13:40 03/13/14 Totally agree... - rcmadness 12:14:47 03/13/14 I was thinking from an intake closing point of view - LitlElvis 15:23:08 03/13/14 I just spent a year driving a high compression TT - xpwarrior 11:01:23 03/13/14 He does have some ridiculous injectors on there. (n/m) - Nate (NoVA) 11:02:17 03/13/14 Well.... I have been playing around with the hi compression - ConVerTT 11:19:03 03/13/14 and E85 for higher boost (n/m) - JaffaUK 11:23:59 03/13/14 Unfortunately, E85 is not commonplace in Canada like it is - MixManMash 17:20:51 03/14/14 There's a difference between enthusiast and factory - BlackholeZ 16:20:23 03/13/14 Wasn't there a theory against high compression + boost - hunterg 21:23:18 03/13/14 Here's the post I was referring to actually - hunterg 21:32:12 03/13/14 Assuming cams are stock and cam timing unchanged. - bartz32tt 23:01:02 03/13/14 well... - Antihero 09:13:03 03/14/14 I know little about all this but I do know that you cant - LJZTT 15:37:58 03/14/14 A lot cooler. That's why you can't really even compare it to - dogpile 17:38:53 03/14/14 ^ This guys knows. - The Hawk 19:17:46 03/14/14 Me? Thanks I guess - dogpile 00:40:08 03/15/14 I found VERY interesting info - SEE LINK - BEASTT 02:05:30 03/14/14
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