240Z-Fan Posted May 24, 2011 Share #37 Posted May 24, 2011 Dunno. Send them to me and I'll test them extensively to find out. Arne, I would love to have you test them for me, but I would hate to put you through so much work just to help me out. It wouldn't be right. However, I will be sure to let you know if I find another set. Currently waiting for Bilstein to call me back. I want know if Bilstein recommends rebuilding them and if they would have parts for them. I suspect the seals won't last given the age. But who knows. If need be, there are other reputable Bilstein rebuilders that probably can rebuild them. Now I need to choose springs. Something I can install on the car without modifying the strut housings. Any ideas? anyone? :-) Al Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356710 Share on other sites More sharing options...
Arne Posted May 24, 2011 Share #38 Posted May 24, 2011 If you can find a set, I like the repro euro springs I cut-down for my car. The spring rate is about 10-15% firmer than stock US springs. They do need to be cut some to give normal ride height, but no mods other than that. Several of the people who got in on that group buy bought more than one set - maybe someone has a set they'd be willing to part with? Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356711 Share on other sites More sharing options...
JLPurcell Posted May 24, 2011 Share #39 Posted May 24, 2011 I bought a Seires 1 parts car a while back and found a NOS set of factory inserts in the boxes. Does anyone know how well these performed? jlp Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356732 Share on other sites More sharing options...
Arne Posted May 24, 2011 Share #40 Posted May 24, 2011 (edited) I bought a Seires 1 parts car a while back and found a NOS set of factory inserts in the boxes. Does anyone know how well these performed? jlpFactory Nissan inserts? No idea. Probably similar to KYB but w/o the increased ride height of the gas KYBs. Edited May 24, 2011 by Arne Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356733 Share on other sites More sharing options...
Jeff G 78 Posted May 24, 2011 Share #41 Posted May 24, 2011 I wasn't aware that Nissan ever made replacement inserts. Interesting. Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356734 Share on other sites More sharing options...
Zedrally Posted May 24, 2011 Share #42 Posted May 24, 2011 I wasn't aware that Nissan ever made replacement inserts. Interesting.The original struts didn't have "inserts".The FSM gives instructions on rebuilding them, but to my knowledge no one ever did, rather replacing them with after market inserts.For histories sake, if you have the part numbers or photo's of these factory parts or boxes, please post them. Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356740 Share on other sites More sharing options...
JLPurcell Posted May 25, 2011 Share #43 Posted May 25, 2011 The original struts didn't have "inserts".The FSM gives instructions on rebuilding them, but to my knowledge no one ever did, rather replacing them with after market inserts. For histories sake, if you have the part numbers or photo's of these factory parts or boxes, please post them. Part #'s 56205-E4125 & 56105-N3785 I don't know which is front set or rear set. Instructions in English and Japanese Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356744 Share on other sites More sharing options...
240Z-Fan Posted May 25, 2011 Share #44 Posted May 25, 2011 If you can find a set, I like the repro euro springs I cut-down for my car. The spring rate is about 10-15% firmer than stock US springs. They do need to be cut some to give normal ride height, but no mods other than that. Several of the people who got in on that group buy bought more than one set - maybe someone has a set they'd be willing to part with?Arne,This sounds appealing. I want to keep my car looking mostly stock and am reluctant to section struts and go to a adjustable coilover setup. So this sounds like the way to go for me. The higher rate springs will be even higher when cut down. So it may be a nice setup, and hopefully within range of the Bilsteins damping ability.I remember when the group buy, too bad I didn't get a set. Well, I'll start looking for a set. My goal is to keep the car streetable for the lousy midwest roads, but I have gotten quite used to high spring rates (and great handling) in my track and street Miata. So the Z feels a quite soft, especially with the 14" High Performance all seasons with tall sidewalls. (so good performance tires on 15" wheels are part of the plan too).John Coffey, (if you are put there), any additional pearls of wisdom?Thanks Arne (and anyone else who chimes in),Al Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356834 Share on other sites More sharing options...
Arne Posted May 25, 2011 Share #45 Posted May 25, 2011 The higher rate springs will be even higher when cut down.No, the factory springs were all linear rate, not progressive. So the rate will be unchanged when cut. All the cut did for me was correct the ride height. Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356838 Share on other sites More sharing options...
LeonV Posted May 25, 2011 Share #46 Posted May 25, 2011 No, the factory springs were all linear rate, not progressive. So the rate will be unchanged when cut. All the cut did for me was correct the ride height.Changing properties of a spring will change its spring rate. It doesn't matter whether a spring is linear or progressive, when you start cutting coils the spring rate will increase. Simple physics. Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-356841 Share on other sites More sharing options...
Nigel1943 Posted June 24, 2011 Share #47 Posted June 24, 2011 Where in the UK did you get your Bilsteins and are they standard length or shortened?RegardsTimI know its a long time since your post but I've only just noticed it! Bilsteins available from Bilstein UK, Leicester, Google them. Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-359645 Share on other sites More sharing options...
jmortensen Posted June 24, 2011 Share #48 Posted June 24, 2011 Go do the math on spring rates. I remember Dan Baldwin did the math maybe 10 years ago, and with the amount of spring he cut off the rate increased something like 3 or 5%.Euro springs are still pretty soft. Softer than Tokicos or Eibachs or ST springs as I recall. Bumping them up a little isn't going to hurt anything. Link to comment https://www.classiczcars.com/topic/31657-found-some-bilstein-inserts/?page=4#findComment-359648 Share on other sites More sharing options...
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