Subject	Detonation is NOT pre-ignition
Posted by	safZ on January 31, 2004 at 2:18 PM
	This message has been viewed 60 times.
In Reply To	I'm not expert, but >> posted by Greg (Dallas) on January 31, 2004 at 01:04 PM
Message	You are correct on what pre-ignition is, but detonation is a synonym for knock (in most cases). Knock/detonation is combustion of the end gasses after/while normal combustion has occured. This is usually due to heat and pressure and is abnormal combustion. Pre-ignition is, as you said, ignition before the spark. Pre-ignition is extremely destructive and happens well before spark (say 180 degrees even). Signs of detonation are broken ring lands, scuffed piston, etc. Pre-ignition is instantaneous and usually just melts a hole in the piston and the engine stops running. Engines can last some time w/ moderate to higher levels of detonation, but engines do not last under pre-ignition. Soren Faaborg Phuong on the Amish < GotRice_ > they get all horny when I show them electronic stuff
Follow Ups	With all the talk of Water Injection these days; - ni[X]it 11:27:37 01/31/04 So what are you doing for a pump now? - RegalZ 11:37:01 01/31/04 Re: So what are you doing for a pump now? - nixit 11:46:11 01/31/04 My mistake on the "upgraded" driver, I think its the same - RegalZ 11:52:52 01/31/04 did you ever get yours installed? - genic 11:57:14 01/31/04 I just got my Z back ... - RegalZ 12:10:06 01/31/04 I've only done it once, ever. - nixit 11:57:28 01/31/04 Hi nixit, did you ever see this graph? - northZ 11:56:01 01/31/04 I got a video of my car accelerating with water inj. - HakenTT 11:39:54 01/31/04 Re: I got a video of my car accelerating with water inj. - nixit 11:47:08 01/31/04 lol (n/m) - northZ 11:50:59 01/31/04 You 2nd a Haken post. Where is Ripley? (n/m) - MikeH(Twin GT35BB Incon Z) 12:56:49 01/31/04 ha (n/m) - cant_z_me(back in business) 14:09:23 01/31/04 lol...he's been pretty helpful today actually (n/m) - RobWR14 15:19:05 01/31/04 He 2nds all of Haken's accurate posts. (n/m) - Kenny 15:37:44 01/31/04 all 2 of them (n/m) - YugoBernie (NoVA) 20:43:47 01/31/04 Yes, I did note a change in the sound of the exhaust, - AshsZ 13:41:23 01/31/04 What if any disadvantages is there to running this? - larryb 11:56:47 01/31/04 1 long term disadvantage;l - nixit 11:58:48 01/31/04 Understood but> - larryb 12:08:17 01/31/04 I think it basically acts as an octane booster - RegalZ 12:13:59 01/31/04 It smoothes the combustion process. The effect is similar - AshsZ 12:45:54 01/31/04 What kind of dyno #s you think is possible on a stage 3 - IBPimpn(Ca) 13:16:53 01/31/04 400+rwhp. (n/m) - AshsZ 13:48:37 01/31/04 Wow, that's some big gains and saving considering no - IBPimpn(Ca) 14:09:32 01/31/04 Several people have made 400+RWHP on stock turbos and ICs. - AshsZ 15:46:56 01/31/04 I doubt that personally... - nixit 15:37:30 01/31/04 I'm not expert, but >> - Greg (Dallas) 13:04:05 01/31/04 That is what I was looking for, thanks. (n/m) - larryb 13:07:34 01/31/04 Detonation is NOT pre-ignition - safZ 14:18:53 01/31/04 Never heard of this combustion after normal cumbustion - northZ 15:46:34 01/31/04 When the initial combustion process is begun by the spark - AshsZ 15:54:44 01/31/04 now i`m following - northZ 16:16:12 01/31/04 One thing I found out is that you need to re do PCV - HakenTT 12:11:44 01/31/04 Another disadvantage is it is not maintenance free. - MikeH(Twin GT35BB Incon Z) 12:13:33 01/31/04 From our research, clogged nossels are rarer then Elvis. - nixit 15:20:15 01/31/04 If you run clean distilled water and you get - MikeH(Twin GT35BB Incon Z) 16:44:39 01/31/04 Are you putting another group buy or is Ash from - MikeH(Twin GT35BB Incon Z) 12:10:08 01/31/04 I was planning one last spring. I decided, - nixit 15:21:52 01/31/04 A long read for those in the know. H2O Inj Q's and comments> - whitepearlz 13:17:32 01/31/04 Well, the idea here is to put together a kit for Z's. - AshsZ 13:45:51 01/31/04 Very cool, I appreciate the response. Keep us all posted =) (n/m) - whitepearlz 14:17:47 01/31/04 Also what type of "water"-retrieval system is this based - whitepearlz 14:35:47 01/31/04 That depends on the price of the nissan resovoir. - AshsZ 15:48:37 01/31/04 wow, great stuff! (n/m) - hoss 15:04:11 01/31/04 Here's an ULTRA ghetto system we did for $100.oo TOTAL. - nixit 15:34:41 01/31/04
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