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Top 2GNT Technical Turbo/Nitrous Tech topic #90982
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Subject: "RE: All-Nitrous 2GNT" Previous topic | Next topic
cougar694uDec-20-04 04:19 AM
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#90988, "RE: All-Nitrous 2GNT"
In response to In response to 4
 Dec-20-04 04:25 AM by cougar694u



          

Originally posted by babybeclipse
explain to me WHY? It's all about cylinder pressure. There IS NO DIFFERENCE (except for off boost/nitrous power)


You must use lower compression for a forced induction because it's putting a larger amount of air into the cylinder. It's harder to compress a bunch more air, thus needing lowered compression to allow for the added mass in the cylinder. It's forcing air into it, causing a higher cylender pressure by default.

It's better to use a higher CR in a nitrous application to get that added cylinder pressure you're talking about. You're not adding a bunch more mass with nitrous, just more oxygen molecules. You up the compression to increase your cylinder pressure when the piston at TDC. It has less mass, so you can compress it more, causing better fire.

As a rule, forced induction = lower CR; nitrous = higher CR.

**EDIT**

Just remember, though, with nitrous your cylinder temps will be higher, more so than with forced induction, and I believe you're o2 sensor will read through the roof (rich as hell) if I remember correctly. You'll need to learn to read your spark plugs to make sure you're not running too much nitrous and not enough fuel. In the event that you do notice something, always pull nitrous, don't add fuel.

~Luke
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All-Nitrous 2GNT [View all] , babybeclipse, Dec-18-04 09:56 AM
  RE: All-Nitrous 2GNT, turbo8u, Dec-18-04 03:10 PM, #1
RE: All-Nitrous 2GNT, AdministratorStar Turbo Talon, Dec-18-04 04:52 PM, #2
      RE: All-Nitrous 2GNT, JWoodley, Dec-18-04 06:33 PM, #3
      RE: All-Nitrous 2GNT, babybeclipse, Dec-19-04 03:42 PM, #4
           RE: All-Nitrous 2GNT, BumpinTalon, Dec-19-04 04:32 PM, #5
           RE: All-Nitrous 2GNT, cougar694u, Dec-20-04 04:19 AM #6
                RE: All-Nitrous 2GNT, JWoodley, Dec-20-04 04:24 AM, #7
                RE: All-Nitrous 2GNT, babybeclipse, Dec-20-04 11:05 AM, #8
                     RE: All-Nitrous 2GNT, JWoodley, Dec-20-04 05:19 PM, #9
                          RE: All-Nitrous 2GNT, babybeclipse, Dec-21-04 04:23 AM, #10
                RE: All-Nitrous 2GNT, bzoss, Apr-22-05 11:32 AM, #38
      RE: All-Nitrous 2GNT, babybeclipse, Dec-22-04 08:16 AM, #11
           RE: All-Nitrous 2GNT, TeamMichael_97RS, Dec-22-04 04:51 PM, #12
                RE: All-Nitrous 2GNT, TeamAvenger, Dec-22-04 07:54 PM, #13
                RE: All-Nitrous 2GNT, babybeclipse, Dec-23-04 06:30 AM, #14
                RE: All-Nitrous 2GNT, AdministratorStar Turbo Talon, Dec-23-04 09:41 AM, #15
                     RE: All-Nitrous 2GNT, babybeclipse, Dec-23-04 09:49 AM, #16
                          RE: All-Nitrous 2GNT, Blizare, Dec-23-04 10:12 AM, #17
                               RE: All-Nitrous 2GNT, babybeclipse, Dec-23-04 10:40 AM, #18
                                    RE: All-Nitrous 2GNT, AdministratorStar Turbo Talon, Dec-23-04 11:10 AM, #19
                RE: All-Nitrous 2GNT, cougar694u, Dec-24-04 05:06 AM, #20
                     RE: All-Nitrous 2GNT, TeamMichael_97RS, Dec-26-04 01:31 PM, #21
                          RE: All-Nitrous 2GNT, SILVERNT, Dec-27-04 07:02 AM, #22
                               RE: All-Nitrous 2GNT, babybeclipse, Dec-27-04 08:30 AM, #23
                                    RE: All-Nitrous 2GNT, TeamAvenger, Dec-27-04 11:18 AM, #24
                                    RE: All-Nitrous 2GNT, AdministratorStar Turbo Talon, Dec-27-04 12:09 PM, #25
                                         RE: All-Nitrous 2GNT, babybeclipse, Dec-27-04 06:12 PM, #26
                                              RE: All-Nitrous 2GNT, AdministratorStar Turbo Talon, Dec-28-04 01:47 AM, #27
                                              RE: All-Nitrous 2GNT, babybeclipse, Dec-28-04 03:50 AM, #28
                                              RE: All-Nitrous 2GNT, cougar694u, Dec-28-04 05:38 AM, #29
                                              RE: All-Nitrous 2GNT, eclipse_99rs, Jan-18-05 07:45 AM, #30
                                                   RE: All-Nitrous 2GNT, SILVERNT, Jan-18-05 08:13 AM, #31
                                                        RE: All-Nitrous 2GNT, eclipse_99rs, Jan-18-05 09:05 AM, #32
                                              RE: All-Nitrous 2GNT, Initial DSM, Jan-19-05 07:35 PM, #33
                                                   RE: All-Nitrous 2GNT, babybeclipse, Jan-26-05 07:25 PM, #34
                                                        RE: All-Nitrous 2GNT, SILVERNT, Jan-28-05 07:49 AM, #35
                                                             RE: All-Nitrous 2GNT, Initial DSM, Jan-29-05 09:24 AM, #36
                                                                  RE: All-Nitrous 2GNT, babybeclipse, Feb-06-05 01:25 PM, #37

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