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#1
08-19-2008, 06:41 PM
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About to put on 06 coupe sport suspension - just making sure before i put on...
I know the faq says coupe suspension will provide around a .5" drop all around, and that the front will be slightly higher than the back, but I just want to confirm what will happen with my exact setup:
04 non-sport sedan, and putting on 06 sport coupe suspension. Does it matter that the new suspension (shocks + springs) are from a sport model coupe, and if so in what ways will it be better/different than a conventional coupe suspension? Am I looking at the same drop (from what I've read about .8" in the back and .5 in the front)? Is the only way to reduce the disparity between f and r adding revised Z front springs? And do these work well with the coupe shocks? Or would I want Z front shocks to go with springs if I switch up? Thanks in advance, I tried doing searches for the specific questions but got way, way too many results regardless of attempts to filter. -Mo
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04 DGG Sedan w/ Coupe 18's, NISMO front, 06 rear bumper, side skirts, and splash guards, 06 spoiler, jdm clears, Z-tube and Pop Charger, Coupe sport suspension w/ Z front springs, Coupe midpipe w/ HKS, 35% tint all around with smoked/tinted taillights and indicators, polarg 1200K LED interior bulbs. 
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#2
08-19-2008, 06:49 PM
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It doesn't really lower more in the front vs rear from what I read. It's the fact that your rear fenderwell is lower so it appears that the front isn't as low as the rear. I'll have to go out and actually measure my Z front / Coupe rear suspended G sedan to confirm. Problem is my rear/front tire dia are diff so that will skew things.
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Coupe 19s ~ Hotchkis swaybars ~ Crawford V5 plenum ~ V1 hardwire kit ~ Autoenginuity OBDII & Nissan enhanced ~ Z front/coupe rear springs w/ Koni adjustable shocks *meow* Quote:
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#3
08-19-2008, 07:05 PM
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Yeah another detail is that I have 235 rubber all around (not sure how/if this would affect anything) on coupe wheels.
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04 DGG Sedan w/ Coupe 18's, NISMO front, 06 rear bumper, side skirts, and splash guards, 06 spoiler, jdm clears, Z-tube and Pop Charger, Coupe sport suspension w/ Z front springs, Coupe midpipe w/ HKS, 35% tint all around with smoked/tinted taillights and indicators, polarg 1200K LED interior bulbs.
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#4
08-19-2008, 07:24 PM
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if you had sedan sport suspension, i'd tell you to keep the rears and jut change out the front to coupe suspension. Since you dont, then just install all four.
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04 G35S Prem - sport - aero - navi. - Z-tube+K&n - Crawford plenum - coupe midpipe+HKS - stillen ground & sways - richie bar blk - RHD Bat cover - 05 tail light conversion - tint - JDM clear corners - nismo kit - rays track wheels - Willwood factory 14"/6Pot + 13"/4pot big brake kit - black roof
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#5
08-19-2008, 07:31 PM
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Sounds good, would the z springs work out ok with the coupe sport shocks up front?
I'm not terribly concerned with the front drop, as I'm adding a nismo bumper soon and would rather be a little higher for driveways and stuff
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04 DGG Sedan w/ Coupe 18's, NISMO front, 06 rear bumper, side skirts, and splash guards, 06 spoiler, jdm clears, Z-tube and Pop Charger, Coupe sport suspension w/ Z front springs, Coupe midpipe w/ HKS, 35% tint all around with smoked/tinted taillights and indicators, polarg 1200K LED interior bulbs.
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#6
08-19-2008, 07:36 PM
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As long as you are putting on the complete suspension from the coupe (springs/shocks) you will be fine. You can use the z springs up front as long as you use the sport shocks. The front will have a .5" more of a drop than the rear if you continue to use the coupe springs in the back.
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04 Sport Sedan |6MT|NISMO Kit|Z-tube|K&N Drop In|NISMO S Tune susp|TR MT1 wheels|"Ritchie" FSB|Stillen Sways|05 G35c brakes|clear corners|5/16 MD Plenum Spacer
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#7
08-19-2008, 07:38 PM
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Quote:
I wasn't aware that the sedan sport was any lower than the non-sports? I do know the spring rates for the sports were higher and the sport got stiffer shocks. Or did you mean if he had the sport, just change out the springs?
__________________
Coupe 19s ~ Hotchkis swaybars ~ Crawford V5 plenum ~ V1 hardwire kit ~ Autoenginuity OBDII & Nissan enhanced ~ Z front/coupe rear springs w/ Koni adjustable shocks *meow* Quote:
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#8
08-19-2008, 07:40 PM
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thats exactly what he meant. no need to change out sport shocks for sport shocks...
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04 Sport Sedan |6MT|NISMO Kit|Z-tube|K&N Drop In|NISMO S Tune susp|TR MT1 wheels|"Ritchie" FSB|Stillen Sways|05 G35c brakes|clear corners|5/16 MD Plenum Spacer
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#9
08-19-2008, 07:41 PM
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Quote:
235/45/18 is almost identical specs compared to oem 17" wheels/tires.
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04 Sport Sedan |6MT|NISMO Kit|Z-tube|K&N Drop In|NISMO S Tune susp|TR MT1 wheels|"Ritchie" FSB|Stillen Sways|05 G35c brakes|clear corners|5/16 MD Plenum Spacer
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#10
08-20-2008, 12:30 PM
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Using the coupe springs will give you a .5" drop up front and about a .8" out back. That's the setup I ran for about 6 months. I then added the Z springs up front and dropped the nose an additional .5". I'd suggest doing the Z springs up front because it really does look a lot better. I've also got the Aero bumper and I don't scrap coming out of driveways, over speed bumps, etc. The nose really isn't that low plus the G has very little front overhang which gives it more of an entry/departure angle than most cars.
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Black 2003 G35 sedan 5AT, MD 5/16" spacer, Z-tube, HR Y-pipe, 2006 sedan midpipe, Altima tips, Z/coupe springs, Cobb RSB, 18" ASA AR2s, Nismo bumper and painted sills, JDM brake lights, blacked out chrome, tinted, Best ET: 14.32, Best MPH: 99.87mph
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#11
08-20-2008, 09:27 PM
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Got the fronts on today, the rear bolts were too tight so we're gonna give it a shot in the morning (in case the bolts break and I need to get new ones during the day).
Car already handles a little tighter and looks decent, but I probably will be putting the z springs on at some point QUESTION: for just the front z springs, with the coupe shocks, does unrevised or revised matter? I know the rear shocks and/or springs cause issues with sedans, but would unrevised front springs be ok? Thanks for all the help so far
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04 DGG Sedan w/ Coupe 18's, NISMO front, 06 rear bumper, side skirts, and splash guards, 06 spoiler, jdm clears, Z-tube and Pop Charger, Coupe sport suspension w/ Z front springs, Coupe midpipe w/ HKS, 35% tint all around with smoked/tinted taillights and indicators, polarg 1200K LED interior bulbs.
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#12
08-21-2008, 01:20 AM
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front springs have the same spring rates since 2003 on z or sport tuned g35's.
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04 Sport Sedan |6MT|NISMO Kit|Z-tube|K&N Drop In|NISMO S Tune susp|TR MT1 wheels|"Ritchie" FSB|Stillen Sways|05 G35c brakes|clear corners|5/16 MD Plenum Spacer
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#13
08-21-2008, 11:49 PM
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Chanced upon some Z springs on craigslist and slapped em on today with the coupe rears, it looks and feels fantastic. The extra drop on the z fronts really made a huge difference. Thanks again for all the help guys
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04 DGG Sedan w/ Coupe 18's, NISMO front, 06 rear bumper, side skirts, and splash guards, 06 spoiler, jdm clears, Z-tube and Pop Charger, Coupe sport suspension w/ Z front springs, Coupe midpipe w/ HKS, 35% tint all around with smoked/tinted taillights and indicators, polarg 1200K LED interior bulbs.
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