Acura Integra Type-R All Integra Type R Discussions

High Speed Stability?

Thread Tools
 
Search this Thread
 
Old Jan 5, 2003 | 02:29 PM
  #1  
len's Avatar
len
Thread Starter
Honda-Tech Member
 
Joined: Nov 2000
Posts: 7,187
Likes: 1
Default High Speed Stability?

I just had a question.

My car seems like it's very, very twitchy at high speeds. (70-100mph) The faster I go the more twitchy it is. It's like every minute action of the steering wheel is multiplied. It's to the point where it scares me. Then again, I might just be a wuss.

But here is a quick run down of the car.

2001 Integra Type R with approximately 34,000 miles.
Factory suspension with JDM rear strut bar.
Pirelli P700-z Tires 205/50/15 with approximately 1/2 tire life left.
33psi tire pressure(hot is around 34-36psi) all around.

This car has been involved in an accident before, but I was guaranteed that it was only a cosmetic accident.

Thanks everyone,

len
Reply
Old Jan 5, 2003 | 02:34 PM
  #2  
vtec.dc2's Avatar
Honda-Tech Member
 
Joined: Aug 2002
Posts: 6,112
Likes: 0
Default Re: High Speed Stability? (len)

1. get your tires properly balanced, if its not, the car will feel unstable,
2. your tires are too wide for factory wheels, 205 are much better on 7"
3. could be the wear of the tires..
Reply
Old Jan 5, 2003 | 02:39 PM
  #3  
len's Avatar
len
Thread Starter
Honda-Tech Member
 
Joined: Nov 2000
Posts: 7,187
Likes: 1
Default Re: High Speed Stability? (vtec.dc2)

1. get your tires properly balanced, if its not, the car will feel unstable,
2. your tires are too wide for factory wheels, 205 are much better on 7"
3. could be the wear of the tires..
1. I will try to see if that helps.
2. I am aware that that might be the cause. The wheel/tire combo isn't changing until I can afford the wheels and tires I want.
3. That's a good point. The tread seems like it's waved and not a smooth even wear pattern.
Reply
Old Jan 5, 2003 | 03:08 PM
  #4  
Grandprix's Avatar
Honda-Tech Member
 
Joined: Jan 2001
Posts: 570
Likes: 0
From: Arizona, USA
Default Re: High Speed Stability? (len)

Yeah something seems strange. My car is rock solid at high speeds.
Reply
Old Jan 5, 2003 | 03:09 PM
  #5  
jond's Avatar
Honda-Tech Member
 
Joined: Oct 2000
Posts: 4,406
Likes: 0
From: Brooklyn, NY
Default Re: High Speed Stability? (len)

The alignment may be wrong too, or maybe a suspension peice has broken. Mine feels fine at 145. Grandit I dont turn the steering wheel much at that speed.


.
Reply
Old Jan 5, 2003 | 03:27 PM
  #6  
len's Avatar
len
Thread Starter
Honda-Tech Member
 
Joined: Nov 2000
Posts: 7,187
Likes: 1
Default Re: High Speed Stability? (George Knighton)

Thank you guys,

I'll be sure to try out some of the suggestions.

len
Reply
Old Jan 5, 2003 | 03:30 PM
  #7  
vtec.dc2's Avatar
Honda-Tech Member
 
Joined: Aug 2002
Posts: 6,112
Likes: 0
Default Re: High Speed Stability? (George Knighton)

Factory suspension with JDM rear strut bar.
Pirelli P700-z Tires 205/50/15 with approximately 1/2 tire life left.
33psi tire pressure(hot is around 34-36psi) all around.

You've already received some comments that are good.

To summarise....

You've done a number of things that will cause your car to react differently from stock at high speeds or high-G.

Stock suspension with JDM rear bar: oversteer and/or twitchy
205 section tyres will add to that, just a little
Equalising the tyre pressure at all four corners instead of following the factory recommendation of having more pressure up front: oversteer and/or twitchy

Add to this the possibility that you might've thrown the alignment out a bit, and you might have a car that's darned twitchy at speed.



I'm betting that an alignment will help you out.
speaking of alignment - i have 60K miles and never had it done, my tires are wearing out fine and car is stable at all speeds, i try to stick to good roads -

alignment isn't needed or is it?
Reply
Old Jan 5, 2003 | 03:38 PM
  #8  
uncleben's Avatar
Honda-Tech Member
 
Joined: Aug 2001
Posts: 2,752
Likes: 1
From: Fayetteville, AR
Default Re: High Speed Stability? (George Knighton)

You've done a number of things that will cause your car to react differently from stock at high speeds or high-G.

Stock suspension with JDM rear bar: oversteer and/or twitchy
strut bar... i don't think he means the larger JDM sway bar, i doubt adding a rear strut bar is going to be noticeable in a straight line

my money would be on balanced tires/alignment
Reply
Old Jan 5, 2003 | 03:48 PM
  #9  
NW94RS
Guest
 
Posts: n/a
Default Re: High Speed Stability? (uncleben)

depends on what color your R is. thats what its all about.

J/P good info here about the JDM rear strut
Reply
Old Jan 5, 2003 | 05:19 PM
  #10  
NunRacer's Avatar
Honda-Tech Member
 
Joined: Dec 2001
Posts: 1,222
Likes: 0
From: Vancouver, B.C., Canada
Default Re: High Speed Stability? (len)

I just had a question.

My car seems like it's very, very twitchy at high speeds. (70-100mph) The faster I go the more twitchy it is. It's like every minute action of the steering wheel is multiplied. It's to the point where it scares me. Then again, I might just be a wuss.

But here is a quick run down of the car.

2001 Integra Type R with approximately 34,000 miles.
Factory suspension with JDM rear strut bar.
Pirelli P700-z Tires 205/50/15 with approximately 1/2 tire life left.
33psi tire pressure(hot is around 34-36psi) all around.

This car has been involved in an accident before, but I was guaranteed that it was only a cosmetic accident.

Thanks everyone,

len
At those speeds the car should be solid as a rock. Around 130 and up the car should get twitchy, check the things mentioned above.
Reply
Old Jan 5, 2003 | 06:16 PM
  #11  
migs's Avatar
Honda-Tech Member
 
Joined: May 2002
Posts: 7,812
Likes: 1
Default Re: High Speed Stability? (NunRacer)

Remove PS.
Reply
Old Jan 5, 2003 | 06:22 PM
  #12  
len's Avatar
len
Thread Starter
Honda-Tech Member
 
Joined: Nov 2000
Posts: 7,187
Likes: 1
Default Re: High Speed Stability? (Migs)

Remove PS.
I was seriously thinking about this today. The extra room around that area might help also.
Reply
Old Jan 5, 2003 | 06:42 PM
  #13  
Arsenal's Avatar
Honda-Tech Member
 
Joined: May 2002
Posts: 3,203
Likes: 3
From: England/Florida/Portland
Default Re: High Speed Stability? (len)

I definetly prefer not having power steering, on the bumpy roads at high speeds the PS was terrible, without it feels more solid for some reason and feel more in controll.
Reply
Old Jan 5, 2003 | 06:50 PM
  #14  
jond's Avatar
Honda-Tech Member
 
Joined: Oct 2000
Posts: 4,406
Likes: 0
From: Brooklyn, NY
Default Re: High Speed Stability? (Arsenal)

at high speeds the PS was terrible, without it feels more solid for some reason and feel more in controll.
How does PS work at high rpms? Is there some kind of pressure valve on it so that it doesn't make steering too easy?


Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
variable
Road Racing / Autocross & Time Attack
9
Aug 7, 2010 12:59 PM
jru124
Wheel and Tire
7
Sep 12, 2007 11:14 AM
vietintegboi
Acura Integra
2
Aug 31, 2006 07:50 AM
IsweatHONDA
Honda Accord (1990 - 2002)
5
Aug 22, 2006 09:13 AM
vtec.dc2
Acura Integra Type-R
10
Jun 22, 2003 12:47 PM




All times are GMT -8. The time now is 04:54 PM.