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R34gtt With Jic Coilovers

urtwhistle
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urtwhistle Proficient

urtwhistle

Posted
Posted (edited)

I originaly tried to send this directly to Sydneykid but hey looks like i aint the only 1 trying to fill his inbox.

I have JIC coilover's that came with my R34gtt there a god awfull 12-10kg set up. I'm trying to make the best of what i have currently.

what i would like to know is how much piston travel should there be? i have taken a photo of the coil over fitted. the car was not jacked up at the time of the photo.

i would have thought there should be more then 1inche of travel befour hitting the bump stops?

would raising the lower spring locating nut increase suspension travel? or would that just pretension the spring and change the spring rates. the lower locating spring nut is only just done up firmly against the spring currently. does it need to be pre tensioned to stop it bottoming out.

i put a cable tie on the shaft and put it as far down as possible and just moving the car in the drive way on the hill moved it 2/3 of the way up, so it must be on the bump stops nearly all the time.

http://www.skylinesaustralia.com/forums/in...g&id=140449

thank you in advance.

regards

chris

Edited by urtwhistle
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STATUS Grand Master

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Posted
Posted

no it doesnt sorry. Without pic it is a bit hard but....

if you jack up the car is the spring held captive by the two locking bases? if not wind them up and put about 1-1.5 turns of preload on the spring. then adjust the base of the coil-over to set the height. (provided yours have base adjustmaent like the one ive attached). JIC usually do.

post-34927-1201529465_thumb.jpg

urtwhistle Proficient

urtwhistle

Posted
  • Author
Posted

post-21501-1201577087_thumb.jpg

no it doesnt sorry. Without pic it is a bit hard but....

if you jack up the car is the spring held captive by the two locking bases? if not wind them up and put about 1-1.5 turns of preload on the spring. then adjust the base of the coil-over to set the height. (provided yours have base adjustmaent like the one ive attached). JIC usually do.

yay got it to work. yeah the spring is not loose when the shock is bolted into the car. do i realy need to set it with the shock un installed from the car. am i wrong in saying there should be more then 1 inch of shock travel.

would lifting the car via the spring locking nut give more travel?? then lower the car via the lowering bracket. or should i just chop the bump stop 20mm shorter???

what i was originaly going to do was put some softer springs in but in theory if i do they will compress even more and it will be sitting on the bump stop then.

cheers

urtwhistle Proficient

urtwhistle

Posted
  • Author
Posted

ok i emailed JIC not thinking they would reply and to my amazment this is what i got with in about 8 hours.

Hello

i have a set of R34FLTA2* fitted to a R34 GTT.

what i would like to know is how much piston travel should there be? i have taken a photo of the coil over fitted. the car was not jacked up at the time of the photo.

the spring rates are the standard 12kg 10kg setup for a R34GTR. i would have thought there should be more then 1inche of travel befour hitting the bump stops?

would raising the lower spring locating nut increase suspension travel? or would that just pretension the spring and change the spring rates. the lower locating spring nut is only just done up firmly against the spring currently. does it need to be pre tensioned to stop it bottoming out.

the biggest problem is being in Australia were nobody has any idea about setting these parts up.

thank you in advance

Chris, This set up you should be have more 50% bump travel and 50% rebound travel. You need cut top side bump stop half. For better ride. Also need dust boot. Shock need take care and cleaning maintenance. Don’t adjust ride high from spring. You only can adjust ride hight from lower brackets. Spring shouldn’t play between lower spring seat and top spring seat. If you adjust from spring you will lose travel and make damper damage.

JON

JIC-Magic

www.jic-magic.com

www.cross-na.com

so i have started choping the bump stops but in the process i snapped 2 wheel studds off so i now have more work to do lol

regards

chris

n15m0 Grand Master

n15m0

Posted
Posted

My advice would be to ditch the JICs and get something with softer spring rates...Try some Tein Super Streets or the Bilstein setup in the group buy section. JICs are notorious for giving you a bad back..I had them previously on my S13 and they were bad.

urtwhistle Proficient

urtwhistle

Posted
  • Author
Posted
My advice would be to ditch the JICs and get something with softer spring rates...Try some Tein Super Streets or the Bilstein setup in the group buy section. JICs are notorious for giving you a bad back..I had them previously on my S13 and they were bad.

Hey yeah i totaly agree, but i have to make the best with what i have. iv got a few work mates looking into making some custom springs but it all depends on

$

regards

urtwhistle Proficient

urtwhistle

Posted
  • Author
Posted

Hey for the 50th time im back.

ok i ended up choping the top bump stops in half, which made a massive massive difference to the comfort. i recoment any 1 with JIC coil overs to do the same. i also found that setting the damper setting to about #5 front and rear is absolutely excellant, i can now go over rail way crossings.

i also thing alot of the problem was due to me and every 1 else thinking that setting the damper to the softest setting will make it better,

it doesnt it feels terrible now that its tuned a bit more.

regards

chris

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