I am trying to get the sweet spot with my slicks but it is very fustrating. I have a JDM Civic Type R with a few boltons making 193/132 and doing 13.6 @100mph w/2.065 60ft. I run a b16b tranny with an Mfactory 4.7 final drive, and use 22x8x15 MT slicks on civic type r rims. I tried tire pressure at 10psi (cold) and am working my way down to 8psi, launching at 8300 rpms. I could only get a 2.0 60ft, but was cutting consistant 1.9's with my old ITR with less power. Please tell me according to my HP and MPH, what I should expect with a 1.8 or better 60ft? Oh the car weighs 2658 w/driver

 

engine mounts ?

bushings ?

shocks ?

traction bars ?

clutch ?

preloading ?

launch limiter/control ?

 

Lower launch RPM ?

Where does your torque peak ? have you tryed launching just above that ?

 

here is one of my graphs

 

I have in Innovative 75a mounts, stock bushings, no traction bar, stock shocks with H&R Race springs, ACT performance street disk w/HD PP, Yes I am preloading, and No, I don't have 2step rev limiter.

 

Grab some nice coilovers and a traction bar and get back to me

 

coilovers? why? I thought a traction bar was to elimanate wheel hop by holding the LCA's stable. I never had any of these in my ITR and I would cut 1.9 60ft's on the same slicks.

 

I would bump the Rev limiter up a little so your not shifting before the 60' , get a two step and change that Street disk to a 4/6 puck. I'm surprised that that street disk will hold up on slicks.

 

you might be preloading too carefully?? (hard to describe)
is the car bogging?

I've used that clutch on a crx that ran 13.1 with a 1.760ft. However, 2700lbs of car is probably really hard on a street/strip clutch w/slicks.

 

when i bumped the revlimiter the car just stayed right on the line and burnt those 22's like a burnout. No, iy doesn't bog

 

how old are the slicks that you are using and how many passes are on them? that can cause some loss ! good luck with dialing it in

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Teamdiesel &raquo;</TD></TR><TR><TD CLASS="quote">when i bumped the revlimiter the car just stayed right on the line and burnt those 22's like a burnout. No, iy doesn't bog</TD></TR></TABLE>
Not bump the launch RPM....Bump up the Rev limiter (Rev the motor higher)

 

go down to 6-7psi and launch at a lower rpm..

 

Yes launch at a lower rpms, 8300 sounds a bit high to me!

You`re getting very good times for the mph you are running.

A little off topic... how do you like your EK9 against your old ITR overall!?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Marlon88 &raquo;</TD></TR><TR><TD CLASS="quote">Yes launch at a lower rpms, 8300 sounds a bit high to me!

You`re getting very good times for the mph you are running.

A little off topic... how do you like your EK9 against your old ITR overall!?</TD></TR></TABLE>

Oh man, its just like they say, the ek9 handles like a dream. It turns those corners more confidently than my ITR and the steering is more responsive in and out turns. They were both using different suspension setups so the ride quality cannot be evenly compared, with the ITR using a full Tein HA setup while the EK9 is on some stock shocks with H&R race springs.
On the topic of my slicks, do you think that if I lower rpms to about 6500-7000 and put tire pressure to about 7psi, it would make a difference?

 

 

Thanks for your input

The sweet spot when I had my JDM itr with 4.785 fd was at about 6800 - 7200 rpms. every setup is different then the other, Try to experiment with your car at lower rpms and you will find out what`s best for you

 

theres no reason even with stock struts and H&R springs your car shouldnt be pulling 1.8 60s. if your burning out when launching either your launching too high, your slicks arent properly heated or the track sucks. i think launching at 8300 is a good thing. im guessing your problem is one of the other 2 or both. you will definitely want to lower tire pressure. i always run 8psi max cold. i run on down to 6psi but thats not very often.
in my current race car back when it used to be a street car i ran a motor with almost identical power and was only pulling high 1.8s then i started bumping the launch RPM higher and higher until i was down into the 1.7s. another thing thats probably not helping is your 2600lb car. i was also on 22X8X15s MT.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1 2 NV &raquo;</TD></TR><TR><TD CLASS="quote">theres no reason even with stock struts and H&R springs your car shouldnt be pulling 1.8 60s. if your burning out when launching either your launching too high, your slicks arent properly heated or the track sucks. i think launching at 8300 is a good thing. im guessing your problem is one of the other 2 or both. you will definitely want to lower tire pressure. i always run 8psi max cold. i run on down to 6psi but thats not very often.
in my current race car back when it used to be a street car i ran a motor with almost identical power and was only pulling high 1.8s then i started bumping the launch RPM higher and higher until i was down into the 1.7s. another thing thats probably not helping is your 2600lb car. i was also on 22X8X15s MT.</TD></TR></TABLE>


exactly, my stock gsr motor with a 75 shot, M&H 22 inch slicks on lensos, would cut 1.68 60fts, all day long, but i launched the car at 5000 on the 2 step and went straight into the nitrous.

all motor i could still cut 1.70s,

this was with stock gsr motor, 93 civic si hatch, stock shocks, ebay coilovers

on the gas it ran 11.70a all day long

 

Our track does suck, but there are ITR's and CRX's tha cut 1.8 & 1.7 60ft's all day. The crx is launching at 7500 with a welded diff. and cuts all 1.7's, while the ITR lauches at 9500 and cuts 1.8's. They both run the same 22x8x15 slicks as myself.

 

ask them how they launch, try lower tire pressure and go from there. i launched at 8k dumping the clutch.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Teamdiesel &raquo;</TD></TR><TR><TD CLASS="quote">when i bumped the revlimiter the car just stayed right on the line and burnt those 22's like a burnout. No, iy doesn't bog</TD></TR></TABLE>

i would say drop them down to 6lbs and do a second gear burnout!

 

i was getting 1.8s on the same slicks pulling 12.9 but the was a 2200lb car. i was running 12psi cold, 2nd gear burnout, launching about 6500, no traction bars. you can get 13.1's out of it. i wouldnt recommend going under 10 psi on those tires for your motor setup/power level or youll be breaking stuff in no time, and i dont see the point on the 15's maybe if it was a 13. just my .02$

 

id go for a 23" tire and get them on a smaller 13" wheel ! shouldnt have any problem 60 footing then.

 

learn how to drive it? sry im being a hater.... other drag guys must have been real bored.