I did read all about the springmount mod and seen Zs with them looking good. I ordered a set to cut so I would still have my old ones in case I screw up.
What I realised was, before the cut, the top seating surface is laced with a hard substance that makes the top hard and firm. When cut (1/2 inch), it cuts below the hard part and exposes a softer surface that I can basically squeeze down with my fingers. Is this normal?. I ordered them from Nissan. Thanks for any inputs

 

Dont modify your spring mounts they are there for a reason. if you want to do it right replace your spring mounts and install a quality product. blistein, Nismo. if you want to play you gotta pay.

 

Modify your springmounts if you want.

They aren't 100% rubber- they actually have a plastic reinforcement that you'll see once you cut them.

It's not like they're expensive to change or replace. Best of luck.

 

No argument on price for springmounts etc. all i want to emphesize is if you want to do something proper. replace the spring with a different spring rate to lower your height wich will also affect your drive quality with replacing matching struts to counter the spring rate. rember you are lowring your car from stock ride hight this is going to affecet your caster. when you lower your car there is no adjustment for the front camber and caster . you will have to get new upper control arms to adjust those two steering angles. i recomend SPC great sturdy product- ten times stronger than the shitty oem Aluminum ones. also in the rear you will have to get new camber arms. to adjust the camber back into spec or you will be going through tires like no other. long story short the car was engineered to stand at a certain ride hight and modifying your spring mounts is just not a good idea it may look cool but its going to create more problems later. if all you care about is looks by all means do it. but you are going to sacrifice ride quality and early component failures in other areas of the car. i.e. tires added stress to joints and bushings all that good stuff. just ask your self is it going to improve my car or create more problems later and make your decision.

 

Pictures?

 

Thank you for your input. I have spent hours in the suspension area and read all the stuff that needs to be done when you lower the Z. I was not just going to cut the mount and "done'. I would be installing new sprins, shocks camber and all the stuff needed to do it right.The queation was what I realised after cutting one of the springmounts I ordered.

 

Thanks. Actually I was going to PM you after I was not getting any replies to my question. I did discuss the whole idea of springmount mod with you sometime back and you were very helpful.

 

If I can help at all, please feel free to shoot one my way.

 

Very little of what you have said here holds any merit...whatsoever, when pertaining to the springmount mod.

Its just a bunch of jumbled facts thrown together and put into the wrong context for this subject.

Shaving your upper mounts will not change springrates, will make no noticable change in ride quality, and will put no added stress on any other suspension part where stress has already been created or would be created from a springdrop of equal length. Nor will it shorten the life of your parts any more than a springdrop.

And where did needing front arms come from? Im sorry but it sounds like your just spitting random facts out.

And you gotto learn to use your periods and commas correctly, dude.

 

ROFL. obviously you don't know much about suspension. any modification in ride height is going to change your camber and caster angle. without correction also your going to get an increased tread wear either on the inside or the outside depending on the type of suspension your modifying. what do you do for a living by the way? yeah lets chop some **** off a car that some engineers have spent millions of dollars and 1000's of hours designing and tuning. please man if your going to modify a car you have to do it right. and secondly ones grammar does not dictate a persons knowledge or know-how when it comes to vehicles. GOOGLE autoscope motorsports in DALLAS texas i work there, and don't tell me i don't know what im talking about just b/c i was in a hurry and trying to talk someone out of hacking their car. its a bad idea plain and simple i dont care if he doesnt listen to me. but you know what its cool b/c i deal with clients that tell me how to do my job all the time. peace bro. nuff said take or leave my advice i've seen a lot of **** and doing cutting spring mounts is dumb with all due respect just b/c it looks cooler is not smart when it comes to suspension or anything performance oriented if it makes the car less reliable.

 

unleashed AUTOSPORTS ? Damn man you guys must be awesome never heard of you

 

Oh lest talk grammar? Springrates? Its spring rates, noticable its noticeable , springdrop? Get it right man spring drop. At least use spell check man

 

damn man im sorry i even checked. I saw your shop online. What a joke bro... Come to my shop with twin awd dynos, oh did i forget we have a full simulation racing machine? Oh wait i forgot i have bad grammar therefore i dont know **** what im talking about. **** it you want to see the cars i work on look me up on face book wolffttu@yahoo.com ill add you as a friend just so you can see what i **** with. Thats my email **** grammar!!!! Punctuation and spelling. Give me a call ask if a guy owns a silver 350z at autoscope. Call up ill show you around.

 

Ok Man, once again thanks for your input. I put up the issue so people would share their knowledge. The fact that someone makes a comment you are not happy about should not sway the issue. It does me no good. I do not disrespect any opinion, you know?

 

No shet? you should join the pro circuit as a suspension engineer.



Less reliable than a spring drop? Show me proof, and explain yourself.

Dont get all butt-hurt, but again your spouting random common knowledge.

What your saying is common knowledge to almost everyone here. No shet lowing a car will effect camber, caster, did you forget toe? We all know that. This mod has never been proven to change ANYTHING anymore than a springdrop of equal length. What dont you understand about that??

Everybody on this board knows lowering the car, in any way, will effect ride quality, camber, caster, toe, tire life (if alignment fails to get primary angles into spec) and shorten life of suspension parts if not changed to compensate. (ie: shocks) Again, your just babling random suspension facts.

Shortening the upper mount (which serves little purpose, mostly to keep the spring seated correctly (hence, spring mount) by a 1/4" to 1/2" is NOT going to make an effect on ride quality, WILL NOT change spring rates (due to no shift being made in static weight distribution, therefore no added/lost compression/extension on the springs).

Your only argument is "Do it the right way" ? What if no springs offered on the market lower the tail to the consumer's desired height, and they dont want coilovers? How is it "hacking" the car? your shaving 1/2" off of a rubber mount...really dude. Its easily replaceable and cheap to do so.

And i dont care what shop you work at, the only way that knowledge benefits me is to stay as far away from your shop as possible, and tell all I can to do the same.

And what do i do? I am a Process Engineer for Plant Operations for a leading global Oil & Gas company.

 

And ask others on here, i love to argue, so keep it coming champ.

Please read this thread in its entirety for reference, as it discusses this very issue:

https://my350z.com/forum/brakes-and-...mount-mod.html

 

Actually I have seen some of your arguments before and you seem tough. lol
I guess he/she is sleeping. Wait until he/she wakes up. He/she is going to bring out his/her gloves and the results?. This thread might be closed, poor me. lol

 

I truly hope so, man.

Results of this mod negatively effecting the suspension anymore than a springdrop have never been proven, so he would be the first.

 

Anyone who is cutting their rear springmount obviously doesn't care about the minute differences in handling that the mod may/may not cause.

Those who do care end up spending money to upgrade their suspension setup.

This whole argument is pointless and just looks like a wiener measuring contest.

OH REALLY HIT ME UP ON MY YAHOO EMAIL ADDRESS BECAUSE MY SHOP IS BADASS

Jesus, just stop.

 

+1 this has been discussed ad nauseum. Aside from geometry changes to the rear end, implications on piston travel (shouldn't be an issue at ride heights where you're still messing with the mount), and the usual effects of lowering your rear (lower CG, weight transfer considerations) there is no blatantly "adverse" effect.



On a sidenote, thanks GeauxLadyZ for reminding me about that thread, I believe I owe you some calculations