Thanks for checking.  I don't want to give jdmwerks a bad rep.  I've seen where people had no problems with the 280Z setup and liked it, and just one where a guy had a problem, but jdmwerks resolved it quickly.  But you never know what other parts people are working with or what they're really doing.  Hope yours drop right in.

Does up and down orientation of these springs matter?  Clearly the coils are not wound with a smaller diameter at the top or bottom, and because they are linear, that shouldn't matter.

I am thinking it doesn't, but I just want to see what you guys think.

Edited August 10, 20168 yr by DaveR

I don't think so.  I installed them with the lettering facing up, but other than that, there didn't appear to be any difference between the top and bottom (or lack thereof).

Cool thanks, whats the reason to install the sleeves? just to protect the surfaces from any rubbing off of coatings?

That and I was worried about the possibility of noise from metal-metal contact (I figured all the more modern cars I've worked on that have something between the spring and the supports must have that for a reason).  I'm not sure it makes any difference, but I'm not taking it all apart just to find out :)

What did you use for the coil sleeves, and is it holding up?  May go that route while I have the opportunity, but unsure of what material I should use that is thin enough but hopefully will do the job.

1/2" silicone tubing, which has been holding up fine.  I got it on eBay, but any brewing shop should have it as well.

Received my 240 versions the other day, was expecting them to be the same top to bottom if not front to back. They are neither.

 

Front versions appear to have 2-3 tight coils at one end. Rear ones appear more uniform.  It is making me consider which way I should put them in the car (which end is up that is).  Do linear springs often have tight coils at one end?

 

Left: front Right: rear

 

Left: rear  Right: front

Edited August 10, 20168 yr by DaveR

The spring's going to have the same amount of compression no matter which way it's installed, so all else being equal, the orientation shouldn't make a difference.  One the 280z, I recall the indentations for the end of the springs on the upper and lower seats being the same, if they're different on the 240, then turn the spring whichever way fits best.

Up or down won't matter, but I'd worry about the spring rates (see earlier in this very thread.  I should have posted the Hybridz link).  Hope it works for you.

No worries, I read all the threads beforehand. My part numbers seem good, and my rear strut fits perfectly, as does the gland nut. I don't think I will need a spacer.

The rear spring is short enough that I don't need spring compressors to get the hat on. I can put a little weight on them and get the nut started. Not sure about the front though as it's not off the car yet. 

I hope the ride is good though and not too rough, but I didn't want any issues that might occur with progressives. (Although most of those were probably mixed up back to front eibachs)

 

FYI the following is definitely the case for 240's as well. I plan to email JDMWerks since I have some time before I will get to install them and see what they say. Really the answer doesn't matter since they don't sit better one way or the other (both ways sit pretty nicely) but I just wonder what their response will be

2 hours ago, charliekwin said:

The spring's going to have the same amount of compression no matter which way it's installed, so all else being equal, the orientation shouldn't make a difference.  One the 280z, I recall the indentations for the end of the springs on the upper and lower seats being the same, if they're different on the 240, then turn the spring whichever way fits best.

Edited August 11, 20168 yr by DaveR

The photos in post 20 show both springs with 9 coils each.

The photos in post 32 show 11 coils front and 9 coils rear.

Seems odd. I don't get what they are doing on each set.