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Subject: "Will 10.c CR mess up my Emissions?" Previous topic | Next topic
streetlightningDec-10-05 09:50 AM
Member since Mar 19th 2004
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#95040, "Will 10.c CR mess up my Emissions?"


          

Im plannin on a rebuild of my 420A, with 10.6 comp ratio. ne one know if it will affect my pasing of emmissions in CA? please lets me kno! thanx

  

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Replies to this topic
RE: Will 10.c CR mess up my Emissions?, Rax2, Dec-10-05 10:04 AM, #1
RE: Will 10.c CR mess up my Emissions?, TeamDR1665, Dec-10-05 10:12 AM, #2
      RE: Will 10.c CR mess up my Emissions?, InFiNiT3, Dec-10-05 10:08 PM, #3
RE: Will 10.c CR mess up my Emissions?, ez, Dec-11-05 09:05 AM, #4
RE: Will 10.c CR mess up my Emissions?, HadesOmega, Dec-19-05 09:18 PM, #5
      RE: Will 10.c CR mess up my Emissions?, turbo8u, Dec-21-05 05:43 AM, #6
           RE: Will 10.c CR mess up my Emissions?, InFiNiT3, Dec-21-05 05:53 PM, #7

Rax2Dec-10-05 10:04 AM
Member since Oct 10th 2005
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#95041, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 0


          

I don't know how strict CA emissions are, but I'd say no... If your A/F ratio is the same, and timing and such is the same, it shouldn't effect emissions by any mesurable amount.. Since it's a rebuild with new rings, I'd say it may even be lower than you once had..

'96 Dodge Avenger ES-T

  

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TeamDR1665Dec-10-05 10:12 AM
Donating 2GNT member
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#95042, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 1


          

No idea. Kalifornia is crazy. I've got 10.5/1 in Arizona, where they do emissions, but I have kept my Kansas tag for over four years now to avoid it. With all the shit I've done, the CR is the least of my worries.

  

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InFiNiT3Dec-10-05 10:08 PM
Member since Sep 01st 2002
732 posts,
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#95067, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 2


          

nope not at all.. just make sure u get the timming dead one when u put it back together/// im running a 10.5-1... paased last time... now i gotta do it again this week .. emoji



02:19:18pm DarkOne> They'd have had to brought a whole fucking JUG of KY.
02:19:28pm InFiNiT3> lol no shit
02:19:39pm DarkOne> and a funnel.
02:19:45pm grain> have to get the ky with warming
02:20:00pm InFiNiT3> i feel sorry for the 18 y/o (one was 17 one 18) his name was plaster'd all over the news n news paper
02:20:06pm DarkOne> Yeah, has to be warming.
02:20:06pm BuckNutty> jus spit on it and it'll go in
02:20:17pm InFiNiT3> aye the ky w/ warming any good>
02:20:45pm grain> never tryed it
02:20:50pm grain> i applyed for a sample on thier website
02:20:56pm BuckNutty> evan didn't complain any
02:20:56pm BuckNutty> it felt nice
02:20:57pm InFiNiT3> lol
02:21:01pm grain> i use id glide whne she dries
02:21:06pm grain> good stuff
02:21:45pm InFiNiT3> thnx for the new sig guys
02:21:45pm DarkOne> Are we still talking about fucking dead chicks?

  

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ezDec-11-05 09:05 AM
Old School 2GNTer
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#95072, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 0
Dec-11-05 09:06 AM by ez

          

I've heard of low compression engines not passing, but nothing about high comps. I don't know any high comp 420a's in socal! I believe if you manange your fuel and ignition correctly, and keep stock cams, your combustion temperatures should only be slightly higher and maybe you'll get higher NOx (I forget but I think nitrogen pollutants go up when combustion temps go up). Your hydrocarbons should depend purely on tuning (you control that) and if you have any oil leaking into the combustion chamber (seals and rings)

  

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HadesOmegaDec-19-05 09:18 PM
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#95172, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 4
Dec-19-05 09:19 PM by HadesOmega

          

it should pass I have a 10.5:1 compression and mine barely fails but I'm guessing its because I didn't put my engine back together correctly. My HC was a litle high.

if anything more compression will give you nox because it burns hotter but I didn't get high nox.


http://www.hadesomega.info -car specz and movies 95 Eclipse RS | 76' 280Z | 89' MR2 | 99 Neon | 91 Zephyr
Who sez FF can't drift?

  

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turbo8uDec-21-05 05:43 AM
Member since Jun 15th 2003
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#95176, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 5




          

you guys are 100% correct about the NOx going up with the higher compression ratio. NOx readings are directly heat related. Just make sure your catalytic converter is working, and most of all the EGR.

concerning HC's...i dont think you'll have to much of a problem burning all the fuel, just make sure you're using stock cams and stock timing.

if you're anywhere near sacramento, i have an exhaust gas analyzer and i can sniff it for you and let you know if youll pass or fail or not

_ _ _ _ _ _ _ _ _

96 Black ESi
91 Red TSI AWD (RIP)
02 WRX


"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"

Aerospace Certified TIG welder for Precision Castparts in Portland, OR.

JoshSpair.com

  

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InFiNiT3Dec-21-05 05:53 PM
Member since Sep 01st 2002
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#95181, "RE: Will 10.c CR mess up my Emissions?"
In response to Reply # 6


          

dammit josh ur gunna make me drive all the way up there arnt ya? lol
hel i got a jan extention im good for another month lol



mods include but not limited to:
engine: AEM cai , pp head / TB / intake runners, Chikira 4-2-1 header , custom 2.5" exhast / pacesetter high flow cat/flowmaster2 muff,1mm over sized SS valves,PT valvetrain, AEM cam gears/pully set, prothane motormounts,440 injectors , ground kit.
Trans: Custom ATX (1 of a kind) poly-graphite steels , kevlar clutches , final drive , shift kit,3500 stall TC, Tourqe Wonder trans chip ($120.00 2gnt price only!!email for order info)

  

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