S2000 Under The Hood S2000 Technical and Mechanical discussions.

JIC coilovers do need to be preloaded

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Old 01-27-2005, 04:23 AM
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I was just PM'ed for some more information, so I am posting a diagram to clear things up a bit.



This is not the exact same unit for our car, but it will have to do. The preload adjustment is done by compressing the spring via the locking rings (B). This is done to increase the available travel in the damper (A) when the car is on the ground. You should measure how much total travel you have (A) when the car is OFF the ground, then adjust the locking rings (B) until you have about 1/2 of that travel left (A) when the car is on the ground.
Old 01-27-2005, 07:18 AM
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.... and if you use a low spring rate, you'd need to PRE-LOAD it to achieve that.
Old 01-27-2005, 12:02 PM
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So Basicly measure From the bottom of the bump stop to the Lock Ring. SO how much distance On and off the ground should I have Between the bump stop and the Lock ring
Old 01-27-2005, 04:47 PM
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Does it matter how much shock shows as long as it is the same on the front and the rear? When the car is on the ground? I can see 1 or and 1 and a half inch in the front when the car is on the ground and about half inch in the back. Does this sound correct? But if i jack the car up i take the wheel off. At this point I still can not see any more shock. So im going to get a alighment in a few weeks so I was wanting to see if I can change anything? But mentally I just can not understanding why such little amount Shock travel showing. I mean I would think in hard cornoring that it would compress. Also does it have to be the same in the front and the back? Since the car is 50/50 weighted. ? Thanx
Old 01-27-2005, 04:52 PM
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In fact come to think of it. Just thinking about it no math or previous knowledge put into this but, I think you should be able to see 2 inch's on the shock in the front and back. This would be a nice amount of travel. And would increase spring stiffness as well. If it was a little bit stiffer this could increase cornoing speeds? I know that there is a line between Too stiff. But how does 2 inchs of shock travel sound in the front and the back vs. my current set up 1.5 inch in the fornt and .5in in the rear. Thanx
Old 01-27-2005, 04:56 PM
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O yea one last thing I talked to JIC USA the other day and these questions I ask are kinda hard to get a full understanding of the answer you have to either be there or see it. So he told me adjusting the spring really doesnt matter AS LONG as the spring is not loose.
Old 01-27-2005, 05:11 PM
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Some good info.
Old 03-08-2008, 02:23 AM
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Everytime I hear the name Kevin I cringe.
I have four Camry FLTA2 coil overs sitting in my shed because one of them leaks and for some odd reason they can't fix it.

They had the coil overs for two months and when I got them back I installed them and after a couple days of my wife driving to work the same shock started knocking again. I took the shock apart myself and the shaft had an 1/8 inch cancer looking spot on it and that destroyed the seal. At this point the coil overs were 5 months old with 2 of months being in the shop and 1 month due to them telling me not to send them in yet because they were busy.
It was causing me more headache than it was worth so I replaced them with Teins.

JIC will never gain my trust ever again. Fourteen hundred dollars of pain.


Now I have Teins on my camry and on my S and I love them. Tein USA has great customer service from what I've heard so far.
Tein FTW
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