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Gtir Motorsport club » Tech room » Help and Advice » Twitchy handling

Twitchy handling

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1 Twitchy handling on 20th December 2017, 12:58 pm

Gaz GTiR

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Apart from my clutch giving up, ive just rememberd another issue ive got!

This is a handling issue... Basicly the car has been abit twitchy on cornering & also if I'm driving in a strait line about 30mph & I steer from left to right cotinuasly (like if you was on track & going from left to right to warm tyres up) as I straiten up to carry on in a strait line, the chassis of the car takes a second to settle, like the chassis is still swaying if that makes sense? (its not body roll, its more like chassis is still going from left to right for a second after I straiten up)

Ive checked all bushes underneath, ball joints, track rods etc etc & everything seems fine! Any ideas? scratch scratch

2 Re: Twitchy handling on 20th December 2017, 2:04 pm

mike74

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soft/squishy tyre walls?
over medication?

3 Re: Twitchy handling on 20th December 2017, 2:11 pm

Gaz GTiR

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Yeh could well be, But ive had these tyres on for a while & its only recently started doing it

4 Re: Twitchy handling on 20th December 2017, 2:53 pm

Stu

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Admin
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Ask your son Laughing


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5 Re: Twitchy handling on 20th December 2017, 3:23 pm

Gaz GTiR

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@Stu wrote:Ask your son Laughing

lol! How many paypals you received mate? lol!

6 Re: Twitchy handling on 20th December 2017, 4:38 pm

Mr B

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gtir technician
gtir technician
what struts/springs and suspension bushes/arbs you got .
any castor mods and what geometry you run .

7 Re: Twitchy handling on 20th December 2017, 5:30 pm

Ryaneg6freak

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Sounds like bump steer to me. Is your car lowered quite a bit?

8 Re: Twitchy handling on 20th December 2017, 5:48 pm

Gaz GTiR

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I'm running nismo struts with spax springs, whiteline rear arb with polybushes & standard front arb polybused... All seem to be ok tho, no leak on struts & all bushes under car seem ok!



Car is lowerd quite abit & always handled brilliantly out of all the R's ive driven... This has only recently occurred scratch scratch

9 Re: Twitchy handling on 20th December 2017, 7:06 pm

PartyPete

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the one star club
the one star club
My s2000 used to do the exact same thing you’re describing gaz, it was until I replaced all the old original bushes on the rear end with new poly bushes did it stop! It was a very unsettling feeling, especially around corners, as I would turn in it felt like it would turn in a little bit more than what I’d want it too, and also changing gear at speed, it would sway slightly. Any way,it was the bushes

10 Re: Twitchy handling on 20th December 2017, 7:34 pm

Gaz GTiR

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Exact same mate where it feels like its wanting to turn more, also feels like it want to push out more aswell like it dousnt want to took itsel in to the corner... Ill have another look under it when I do the box!

what bushes did you replace with polybushes & how much did it cost you for the bushes as I know there bloody expensive replacing them all

11 Re: Twitchy handling on 20th December 2017, 8:34 pm

PartyPete

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the one star club
the one star club
Anti roll bar, lower and upper arms and trailing arm bushes, Infact I think from memory it may have been the trailing arm bushes that were causing the issue, didn’t cost that much, was like £100 ish (it was like a year ago I did this) it was from a company on eBay from Poland, they weren’t a big brand name like powerflex (would have cost 3 times more) and there were perfect and solved the issue....

12 Re: Twitchy handling on 20th December 2017, 10:51 pm

Mr B

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gtir technician
gtir technician
^ strongflex

used them for some subaru bushes and good for the price .

Don't do a full range of bushes for the R but few threads on here with good price range of bush options .

13 Re: Twitchy handling on 21st December 2017, 12:14 am

shroom

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@PartyPete wrote:Anti roll bar, lower and upper arms and trailing arm bushes, Infact I think from memory it may have been the trailing arm bushes that were causing the issue, didn’t cost that much, was like £100 ish (it was like a year ago I did this) it was from a company on eBay from Poland, they weren’t a big brand name like powerflex (would have cost 3 times morfe) and there were perfect and solved the issue....


When I brought your Pulsar its was the same, rose joints on the D2 coilovers were so worn thet were clanging about all the rear bushes were fubared 360bhp and it was a death trap on the way home I shit myself lol worst handling R I had ever driven.

Gaz just give up and sell the tin can mate get an Evo something that can actually go round corners its probably the first time you have taken it over 60mph every R is the same lol

14 Re: Twitchy handling on 21st December 2017, 6:30 am

PartyPete

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the one star club
the one star club
Yea I had a look and I think it is strong flex as B says. Shroom
What did you change on it when you bought it? And who did you get it off?

15 Re: Twitchy handling on 21st December 2017, 7:23 am

Ryaneg6freak

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I'd look into a subframe lock kit as well. Spoon Sports currently makes a set for front and rear. Based on some of your symptoms, it sounds like maybe one of your subframes is shifting under load.

16 Re: Twitchy handling on 21st December 2017, 7:47 am

PartyPete

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the one star club
the one star club
Never heard of a subframe lock kit, do you have a link so I could have a look?

17 Re: Twitchy handling on 21st December 2017, 8:16 am

gtir_woody

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moderator
moderator
This one?

http://www.whiteline.com.au/product_detail4.php?part_number=KCA349

18 Re: Twitchy handling on 21st December 2017, 12:00 pm

Gaz GTiR

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Yeh ill have another check when I get it on the ramp... & £100 aint bad pete What a Face I may invest lol.

I'm never below 70 shroom Laughing Laughing

19 Re: Twitchy handling on 21st December 2017, 12:30 pm

GTI-R US

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Management
Management
sounds to me as though its towing out too much or too much camber???
get the alignment done to settings i put up in suspension section


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20 Re: Twitchy handling on 21st December 2017, 1:28 pm

Gaz GTiR

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@GTI-R US wrote:sounds to me as though its towing out too much or too much camber???
get the alignment done to settings i put up in suspension section

That's what I had it set to mate when I had it aligned, but now you meantion it that's when it didn't feel right so maybe hes done it wrong & need it checking

21 Re: Twitchy handling on 21st December 2017, 5:22 pm

Ryaneg6freak

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@PartyPete wrote:Never heard of a subframe lock kit, do you have a link so I could have a look?

Here you go Pete,
Spoon makes a complete kit for front and rear, although I can't seem to find the front one on this website for some reason. They do list the rear.

https://www.spoonsports.eu/spoon-products/product-manufacturer/rigid-collar.html

22 Re: Twitchy handling on 21st December 2017, 8:13 pm

johnny gtir

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moderator
moderator
@Gaz GTiR wrote:
@GTI-R US wrote:sounds to me as though its towing out too much or too much camber???
get the alignment done to settings i put up in suspension section

That's what I had it set to mate when I had it aligned, but now you meantion it that's when it didn't feel right so maybe hes done it wrong & need it checking

In that case worn bush or something like a nut or bolts come slack or they ain’t tighten it

23 Re: Twitchy handling on 21st December 2017, 8:32 pm

Mr B

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gtir technician
gtir technician
not unusual have alignment set wrong if operator bit sloppy . rear end bushes also give this sort of problem and if some still originals they be long way from their best by now especially with how you go round roundabouts :-)

24 Re: Twitchy handling on 21st December 2017, 9:55 pm

johnny gtir

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moderator
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Some mess it up B. My lasses mini the tracking was out. I ended up booking 4 wheel align because they disturbed the rear and bushes ( probably never had the rear adjusted ) it suddenly had a lot more play than ever creating movement. Also some try to hard to get it perfect and don’t realise if it won’t come right on one side set both sides slightly out to compensate so the car drives right

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