Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk

Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


Reply
 
Thread Tools Display Modes
Old 10-27-2009, 12:13 AM   #1
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
drag racing suspension

i had tein hr coilovers with 15X8 welds with 275/60/15R nittos drag radials at 12 psi, anit lag and 400whp. the car is a s13 hatch.

now its all the same but i have stock shocks and springs. my best 60' is 1.89 on the coilovers and 1.73 on the stock shit. im getting new m/t et streets very soon. what else can i do to lower my 60'?
coilovers again? adjust something? any help is good.
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Sponsored Links
Old 10-27-2009, 12:40 AM   #2
Nismoknightska-t
Premium Member
 
Join Date: May 2007
Location: Azusa, socal baby! why do i live this way?? it must be the money!
Age: 29
Posts: 523
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to Nismoknightska-t
lower the new et streets down to 11psi.. you should break a axle or the tranny if they are still stock...

install subframe spacers.. and maybe go auto, if you have the money..
__________________
NismoKnights
Terrorizing Honda crews since 2003
ls2 powered kouki..all show and GO! putting it down on the streets and the track! LMAO V8
Nismokights on http://www.youtube.com/user/NismoKnights
Nismoknightska-t is offline   Reply With Quote
Old 10-27-2009, 12:52 AM   #3
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
i have dds axles and a 300zx/mazworx trans. my drivetrain is good for over 600hp all around.

i was thinking of getting subframe spacers. they are to get rid of the wheel hopping right?
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-27-2009, 12:57 AM   #4
SuperiorS14
Zilvia FREAK!
 
SuperiorS14's Avatar
 
Join Date: Feb 2007
Location: S.G.V.
Age: 29
Posts: 1,113
Trader Rating: (20)
Feedback Score: 20 reviews
hks drag dampers or try adjustable shocks with stock springs.
remove sway bars

try adjusting your launch rpm
SuperiorS14 is offline   Reply With Quote
Old 10-27-2009, 01:07 AM   #5
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
Quote:
Originally Posted by SuperiorS14 View Post
hks drag dampers or try adjustable shocks with stock springs.
remove sway bars

try adjusting your launch rpm
i no longer have the coilovers. i have no sway bars. my susp. is completely stock. i have the anti lag set perfect for the way it sits now. i know that i need new tires. i was looking at sub frame bushings and spacers and staying with the stock shocks and springs
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-27-2009, 01:49 AM   #6
SuperiorS14
Zilvia FREAK!
 
SuperiorS14's Avatar
 
Join Date: Feb 2007
Location: S.G.V.
Age: 29
Posts: 1,113
Trader Rating: (20)
Feedback Score: 20 reviews
if you shocks havent been change i suggest replacing them with at least oe replacements if not some adjustables.
SuperiorS14 is offline   Reply With Quote
Old 10-27-2009, 04:02 AM   #7
HYPNOTIK
Zilvia Addict
 
HYPNOTIK's Avatar
 
Join Date: Apr 2008
Location: Pisa, Italy
Posts: 700
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via Yahoo to HYPNOTIK Send a message via Skype™ to HYPNOTIK
You should've kept your coilovers and bought new springs and then had them revalved for drag. Tein will revalve them for around $100 per shock. I'd def get some subframe spacers. What is your alignment like?

Or you could get some HKS drag suspension.
__________________
HYPNOTIK is offline   Reply With Quote
Old 10-27-2009, 04:10 AM   #8
Nismoknightska-t
Premium Member
 
Join Date: May 2007
Location: Azusa, socal baby! why do i live this way?? it must be the money!
Age: 29
Posts: 523
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to Nismoknightska-t
Quote:
Originally Posted by whereda40at View Post
i have dds axles and a 300zx/mazworx trans. my drivetrain is good for over 600hp all around.

i was thinking of getting subframe spacers. they are to get rid of the wheel hopping right?

they will help for sure..

o yeaa put your alignment to 0.. and put the et streets to 11psi..

the tires you are running right now suck!! get a 26-10.5-15 et street..
__________________
NismoKnights
Terrorizing Honda crews since 2003
ls2 powered kouki..all show and GO! putting it down on the streets and the track! LMAO V8
Nismokights on http://www.youtube.com/user/NismoKnights
Nismoknightska-t is offline   Reply With Quote
Old 10-27-2009, 04:29 AM   #9
Shadowhunter
Zilvia Junkie
 
Shadowhunter's Avatar
 
Join Date: Aug 2008
Location: San Diego,CA
Age: 30
Posts: 489
Trader Rating: (5)
Feedback Score: 5 reviews
You gotta tell us what you have so we can tell you what to improve. LSD? Motor mounts? 1 piece axle? All that stuff would help tremendously. A list of what has been done in this situation would be ideal.
Shadowhunter is offline   Reply With Quote
Old 10-27-2009, 06:12 AM   #10
sr20boostn20
Zilvia Junkie
 
sr20boostn20's Avatar
 
Join Date: Nov 2006
Location: Lake Tahoe, CA/ LI NY
Age: 28
Posts: 416
Trader Rating: (1)
Feedback Score: 1 reviews
Send a message via AIM to sr20boostn20
If you want a lower 60, i suggest you get some slicks.

nothing crazy just an 26x8.5x15 or a 26x10.

my best 60 with stock suspension and a 26x8.5 is 1.59. thats with the stock tranny and a vlsd.

I just picked up Kw variant 3s for my drag set up, their in the car but it hasnt hit the track yet.
sr20boostn20 is offline   Reply With Quote
Old 10-27-2009, 06:29 PM   #11
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
Quote:
Originally Posted by Shadowhunter View Post
You gotta tell us what you have so we can tell you what to improve. LSD? Motor mounts? 1 piece axle? All that stuff would help tremendously. A list of what has been done in this situation would be ideal.
i have a 300zx trans, 1 piece 900hp steel drive shaft, 1.5 ats/carbonetics lsd, dds 600hp axels, avid titanium motor mounts, import inteligence perfect launch anti-lag, 400whp/385tq.

i know i need new tires. the nittos blow and are shot. but even when they were good my 60' was 1.7. i am getting the m/t et streets. i also am going to get subframe bushings and spacers. ill look into the hks drag suspension.

anything else recomended? i do need a front end alinement. do they do the back too?
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-27-2009, 06:42 PM   #12
lazysk8er2
Zilvia FREAK!
 
lazysk8er2's Avatar
 
Join Date: Jul 2008
Location: on an island, NY
Age: 29
Posts: 1,373
Trader Rating: (11)
Feedback Score: 11 reviews
if you wanna adjust the back your gonna have to get adjustable ruca's and basically replace traction rods n stuff in the rear so they can become adjustable.

i say screw the spacers get solid mounts for your subframe. more likely your stock bushings are welldone. also do solid/polyerethane bushings for your suspension. possibly a short shifter would help (i cant tell if you have auto or manual 300zx trans)

test and adjust the gearing (rear end) also thats more proportionate to your setup.
__________________

Quote:
Well i have a 95 240 and i like my cars low... But my parents don't like my wheels tilted
________________________________
lazysk8er2 is offline   Reply With Quote
Old 10-27-2009, 06:49 PM   #13
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
Quote:
Originally Posted by lazysk8er2 View Post
if you wanna adjust the back your gonna have to get adjustable ruca's and basically replace traction rods n stuff in the rear so they can become adjustable.

i say screw the spacers get solid mounts for your subframe. more likely your stock bushings are welldone. also do solid/polyerethane bushings for your suspension. possibly a short shifter would help (i cant tell if you have auto or manual 300zx trans)

test and adjust the gearing (rear end) also thats more proportionate to your setup.
its a manual trans. i have a short shifter. im just looking to lower my 60' i have mph. i trap 120mph. i could trap higher but my tire presure has to be really low to get out the hole. so thats basicly my whole goal is to get the best traction with the max amount of tire pressure so i dont have to sacrifice so much top end.

btw best run was 1.73 60' 11.74 @ 118 mph. i have trapped 120 but my tire pressure was at 15. those runs it was at 9psi
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-27-2009, 07:36 PM   #14
jr_ss
Premium Member
 
Join Date: Dec 2005
Location: Fl
Posts: 4,969
Trader Rating: (33)
Feedback Score: 33 reviews
Send a message via AIM to jr_ss
Soft springs/struts out-back and run the opposite up-front. Adjusting the rear camber to zero would increase the amount of rubber on the track as well. I would also suggest getting anti-squat bushings, I know I've seen them somewhere for the S-chassis.
__________________
My SR20VET
jr_ss is offline   Reply With Quote
Old 10-27-2009, 07:59 PM   #15
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
but dont you want squat with a drag car??
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-27-2009, 11:59 PM   #16
SuperiorS14
Zilvia FREAK!
 
SuperiorS14's Avatar
 
Join Date: Feb 2007
Location: S.G.V.
Age: 29
Posts: 1,113
Trader Rating: (20)
Feedback Score: 20 reviews
Quote:
Originally Posted by whereda40at View Post
btw best run was 1.73 60' 11.74 @ 118 mph. i have trapped 120 but my tire pressure was at 15. those runs it was at 9psi

damn... jeff(nismoknight) can correct me if im wrong but i believe a local (cerio) ran a 10.7x with around 400hp(pistons,2871, z32 trans, etc) im not sure what tire he runs i think he runs et streets. maybe jeff could chime in and help out. you should be running better times.
SuperiorS14 is offline   Reply With Quote
Old 10-28-2009, 10:10 AM   #17
HYPNOTIK
Zilvia Addict
 
HYPNOTIK's Avatar
 
Join Date: Apr 2008
Location: Pisa, Italy
Posts: 700
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via Yahoo to HYPNOTIK Send a message via Skype™ to HYPNOTIK
Subframe spacers
SPL PARTS
__________________
HYPNOTIK is offline   Reply With Quote
Old 10-28-2009, 03:25 PM   #18
sr20boostn20
Zilvia Junkie
 
sr20boostn20's Avatar
 
Join Date: Nov 2006
Location: Lake Tahoe, CA/ LI NY
Age: 28
Posts: 416
Trader Rating: (1)
Feedback Score: 1 reviews
Send a message via AIM to sr20boostn20
Why run a street tire at the track if your looking for better traction?
sr20boostn20 is offline   Reply With Quote
Old 10-28-2009, 03:59 PM   #19
z2roll4life7
Zilvia Member
 
z2roll4life7's Avatar
 
Join Date: Mar 2009
Location: charlotte
Age: 27
Posts: 180
Trader Rating: (2)
Feedback Score: 2 reviews
Quote:
Originally Posted by sr20boostn20 View Post
Why run a street tire at the track if your looking for better traction?
So you can Drive there
z2roll4life7 is offline   Reply With Quote
Old 10-28-2009, 04:03 PM   #20
sr20boostn20
Zilvia Junkie
 
sr20boostn20's Avatar
 
Join Date: Nov 2006
Location: Lake Tahoe, CA/ LI NY
Age: 28
Posts: 416
Trader Rating: (1)
Feedback Score: 1 reviews
Send a message via AIM to sr20boostn20
^^^^ your kidding right?

i used to drive there too, on street tire,

then I take 10 mins out of my day and change my wheels,

and cut 1.5 1.6 60s all day.
sr20boostn20 is offline   Reply With Quote
Old 10-28-2009, 04:36 PM   #21
jr_ss
Premium Member
 
Join Date: Dec 2005
Location: Fl
Posts: 4,969
Trader Rating: (33)
Feedback Score: 33 reviews
Send a message via AIM to jr_ss
Quote:
Originally Posted by whereda40at View Post
but dont you want squat with a drag car??
Yes and no. Too much of it can hurt camber angles and take away traction. Not enough squat will induce wheel spin, you have to find the perfect median. Like I said I think someone sells ones you can adjust, I.e. add a spacer and take away one to dial in the perfect setup for your car.
__________________
My SR20VET
jr_ss is offline   Reply With Quote
Old 10-28-2009, 04:37 PM   #22
HYPNOTIK
Zilvia Addict
 
HYPNOTIK's Avatar
 
Join Date: Apr 2008
Location: Pisa, Italy
Posts: 700
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via Yahoo to HYPNOTIK Send a message via Skype™ to HYPNOTIK
Quote:
Originally Posted by jr_ss View Post
someone sells ones you can adjust, I.e. add a spacer and take away one to dial in the perfect setup for your car.
The link I posted, second one down.
__________________
HYPNOTIK is offline   Reply With Quote
Old 10-28-2009, 09:23 PM   #23
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
Quote:
Originally Posted by HYPNOTIK View Post
The link I posted, second one down.
those were the ones i was looking at getting.

i drive my car on the street with my welds on it. so i have to go with a street tire. i would love to do a slick but ill get pulled over every 5 minutes instead of 10.

that 240 with 400 that went 10, what tires he running, psi, car weight? those all play a factor too. too low of a psi like i have to run now with my nittos kills my mph. from at 9psi my mph was 116 and at 12psi it was 119
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-28-2009, 09:50 PM   #24
QuickSpoolSR
Zilvia Addict
 
QuickSpoolSR's Avatar
 
Join Date: Jul 2008
Location: des moines IA
Age: 26
Posts: 710
Trader Rating: (8)
Feedback Score: 8 reviews
what setup is giving you 400hp at 12psi? it is an sr right?
__________________
QuickSpoolSR is offline   Reply With Quote
Old 10-28-2009, 11:03 PM   #25
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
Quote:
Originally Posted by QuickSpoolSR View Post
what setup is giving you 400hp at 12psi? it is an sr right?
no 12 psi was my tire presure. sorrry about the confussion. im running 18 psi on my turbo.
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 10-28-2009, 11:21 PM   #26
Nismoknightska-t
Premium Member
 
Join Date: May 2007
Location: Azusa, socal baby! why do i live this way?? it must be the money!
Age: 29
Posts: 523
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to Nismoknightska-t
Quote:
Originally Posted by whereda40at View Post
but dont you want squat with a drag car??


Not really.. all the drag v8s have really stiff rears…



Quote:
Originally Posted by SuperiorS14 View Post
damn... jeff(nismoknight) can correct me if im wrong but i believe a local (cerio) ran a 10.7x with around 400hp(pistons,2871, z32 trans, etc) im not sure what tire he runs i think he runs et streets. maybe jeff could chime in and help out. you should be running better times.


not 10.7 but yes he was in the 10s.. hes on a full slick.. and about running better times, it all depends on the track/weather/tires/shifting/boost/ect..


Quote:
Originally Posted by sr20boostn20 View Post
Why run a street tire at the track if your looking for better traction?


Because et streets are the same as slicks almost.. just street legal and they do not grow.. best street/track tire..


Quote:
Originally Posted by whereda40at View Post
those were the ones i was looking at getting.
Quote:
Originally Posted by whereda40at View Post

i drive my car on the street with my welds on it. so i have to go with a street tire. i would love to do a slick but ill get pulled over every 5 minutes instead of 10.

that 240 with 400 that went 10, what tires he running, psi, car weight? those all play a factor too. too low of a psi like i have to run now with my nittos kills my mph. from at 9psi my mph was 116 and at 12psi it was 119
Just get the et streets.. its simple..

That 240 has slicks.. and is max psi for a gt2871r..

dude mph doesn’t matter really.. My s13 went 10s with 116mph... Worry about the car hooking first and then worry about mph..
__________________
NismoKnights
Terrorizing Honda crews since 2003
ls2 powered kouki..all show and GO! putting it down on the streets and the track! LMAO V8
Nismokights on http://www.youtube.com/user/NismoKnights
Nismoknightska-t is offline   Reply With Quote
Old 12-03-2009, 12:08 AM   #27
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
just to follow up.....

i was at the track on nov. 4th for imports vs. domestics and mickey thompson had some 275/60/15's on sale so i got them mounted at the track. turned my anti-lag to 5k, tire presure at 16psi and heated the tires up a little bit. launched the car and BOOM broke my dss 600whp axle. no wheel hop, just saw the front come up and down real fast. i moved a total of 7" off the line. haha i found traction. so now i have to get it repaired and try again next season with my 600whp set up im doing in the off season. also i have to roll the rear fenders for the tire to fit.

thanks for all the help. m/t ftmfw!!!!
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Old 12-03-2009, 12:57 AM   #28
S13 curtis
Zilvia Addict
 
S13 curtis's Avatar
 
Join Date: Jun 2008
Location: Orlando,FL
Age: 24
Posts: 637
Trader Rating: (13)
Feedback Score: 13 reviews
if you're at 400whp in an s13 shouldnt you be trapping in the mid 120's.
S13 curtis is offline   Reply With Quote
Old 12-03-2009, 11:14 AM   #29
ATLspeed
Zilvia Addict
 
ATLspeed's Avatar
 
Join Date: Jan 2007
Location: Eden, MD, USA
Age: 28
Posts: 835
Trader Rating: (14)
Feedback Score: 14 reviews
....gotta love breaking an axle
__________________
s13 Vert - 2jz road to 700hp/tq
ATLspeed is offline   Reply With Quote
Old 12-03-2009, 07:17 PM   #30
whereda40at
Zilvia FREAK!
 
whereda40at's Avatar
 
Join Date: Mar 2007
Location: where 240's are few and far between
Age: 27
Posts: 1,038
Trader Rating: (3)
Feedback Score: 3 reviews
Send a message via AIM to whereda40at
Quote:
Originally Posted by S13 curtis View Post
if you're at 400whp in an s13 shouldnt you be trapping in the mid 120's.
i put down 350whp on a mustang dyno which is like 400 on a dyno jet. depends on who you ask for numbers. i think it might be the trans geared differently. i had a dog box and trapped a best of 11.90 @ 120 and with the 300zx trans i run now i trap 11.60@118. same mods. only changed out the trans. tire pressure was lower on the 11.60 at 10psi and was at 14 with the dog box.
__________________
WORLDS FASTEST T-2 TURBO 240 ON 93 OCTANE!
10.79 @ 124 MPH WITH A 1.48 60'
whereda40at is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 12:39 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors
Copyright © 1998 - 2014, Zilvia.net™