E90Post
 


Studio RSR
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Please help!!!! Question about used KW v3.



Reply
 
Thread Tools Search this Thread
      05-24-2013, 06:57 PM   #1
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

Please help!!!! Question about used KW v3.

Hi, so I bought this set of kw v3 from a forum member. In case I am not ripped off, can anyone tell me how can I identify its for E92 RWD or not? He does not have the box.
Also, how do i know its in good condition or not.
I will pose pic later.
But I really need some information first.
Please help me out but please don't mislead me if you are not sure.
Thx
Jason
update: this is the damage on it. will it influence the suspension?
Name:  photo 3_??.jpg
Views: 2653
Size:  115.0 KB

here is some more detail pic of the suspension:


Name:  b.jpg
Views: 1693
Size:  129.0 KB

Name:  c.jpg
Views: 1537
Size:  129.6 KB

Name:  e.jpg
Views: 1579
Size:  144.3 KB

Name:  a.jpg
Views: 1522
Size:  115.6 KB

Name:  d.jpg
Views: 1535
Size:  116.2 KB

Name:  g.jpg
Views: 1486
Size:  108.4 KB

Name:  f.jpg
Views: 1496
Size:  126.4 KB

Name:  h.jpg
Views: 1488
Size:  132.8 KB

Name:  i.jpg
Views: 1510
Size:  129.5 KB

Name:  j.jpg
Views: 1506
Size:  147.3 KB

Name:  k.jpg
Views: 1488
Size:  141.2 KB

Last edited by jasonlu; 05-24-2013 at 10:54 PM..
Appreciate 0
      05-24-2013, 07:05 PM   #2
ashmostro
Brigadier General
United_States
1254
Rep
4,088
Posts

Drives: 2020 M4cs | 2022 M550i
Join Date: Jan 2013
Location: Falls Church, VA

iTrader: (27)

Quote:
Originally Posted by jasonlu View Post
But I really need some information first.
I'm confused. Did you buy them first but now you want information, or the other way around?
Appreciate 0
      05-24-2013, 07:40 PM   #3
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

sorry, i bought them first and need help identify them.
because the deal is too good and i cant wait.
Appreciate 0
      05-25-2013, 04:14 AM   #4
e679
Private First Class
e679's Avatar
Hong Kong
9
Rep
117
Posts

Drives: E93
Join Date: Dec 2011
Location: Hong Kong

iTrader: (0)

It is for e9x-non M but I am not sure if KW made difference spring rate for e91/e93/e92.

One more thing, the rear shocks may need rebuild.
__________________
E93 335i Alpine White, 19" Works, PSS, M3 arms, M3 bushings,M3 E93 FSB/E92 RSB, powerflex rear diff bush.
AST 5100 with M3 rear camber arms. GC street plates.
Appreciate 0
      05-25-2013, 01:31 PM   #5
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

Quote:
Originally Posted by e679
It is for e9x-non M but I am not sure if KW made difference spring rate for e91/e93/e92.

One more thing, the rear shocks may need rebuild.
Thx,
Is it because the damage on the black plastic part? How can I rebuild it?
Appreciate 0
      05-25-2013, 09:53 PM   #6
e679
Private First Class
e679's Avatar
Hong Kong
9
Rep
117
Posts

Drives: E93
Join Date: Dec 2011
Location: Hong Kong

iTrader: (0)

Quote:
Originally Posted by jasonlu
Quote:
Originally Posted by e679
It is for e9x-non M but I am not sure if KW made difference spring rate for e91/e93/e92.

One more thing, the rear shocks may need rebuild.
Thx,
Is it because the damage on the black plastic part? How can I rebuild it?
No, is b'cuz they lose strength (shafts doesn't push back out)

Is better rebuild by pros but you may search the Internet on how to rebuild shocks and see if you can buy the necessary parts/oil from KW.
Btw, you better rebuild all corners together

Remember to recycle the oil!
.
__________________
E93 335i Alpine White, 19" Works, PSS, M3 arms, M3 bushings,M3 E93 FSB/E92 RSB, powerflex rear diff bush.
AST 5100 with M3 rear camber arms. GC street plates.
Appreciate 0
      05-26-2013, 01:33 PM   #7
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

Quote:
Originally Posted by e679
Quote:
Originally Posted by jasonlu
Quote:
Originally Posted by e679
It is for e9x-non M but I am not sure if KW made difference spring rate for e91/e93/e92.

One more thing, the rear shocks may need rebuild.
Thx,
Is it because the damage on the black plastic part? How can I rebuild it?
No, is b'cuz they lose strength (shafts doesn't push back out)

Is better rebuild by pros but you may search the Internet on how to rebuild shocks and see if you can buy the necessary parts/oil from KW.
Btw, you better rebuild all corners together

Remember to recycle the oil!
.
Thx, did some research online and find out rebuild the suspension cost around 140 each shock and I have to send it to Kw in northcal to do it.
Anyone got any other suggestion?
Appreciate 0
      05-26-2013, 11:12 PM   #8
r0nd3L
Second Lieutenant
United_States
50
Rep
211
Posts

Drives: 135i
Join Date: Mar 2008
Location: Naples, FL

iTrader: (0)

I wouldn't worry about the plastic piece. Even if you install a new one, few months down the road it will look the same.

Quote:
Originally Posted by e679 View Post
One more thing, the rear shocks may need rebuild.
Not all shocks rebound by themselves. I would just test by hand and see if they feel ok. How many miles on them? KW dampers are very robust and should last long time.
Appreciate 0
      05-26-2013, 11:16 PM   #9
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

Quote:
Originally Posted by r0nd3L View Post
I wouldn't worry about the plastic piece. Even if you install a new one, few months down the road it will look the same.



Not all shocks rebound by themselves. I would just test by hand and see if they feel ok. How many miles on them? KW dampers are very robust and should last long time.
the seller said its on the car for 9K mile, but it all depends on how the driver drives it. so do you think it looks ok to put on and use it?
Appreciate 0
      05-28-2013, 01:26 PM   #10
spiike32
Major
spiike32's Avatar
78
Rep
1,127
Posts

Drives: Mineral White F80 M3
Join Date: Apr 2009
Location: IL

iTrader: (9)

Bad info in this thread.... v2 and v3's don't necessarily rebound by themselves. I know, I've held v3, v2, and v1's brand new in my hands. Don't worry about the bump stop dust cover, they're like 10 bucks from KW if you really wanted a new one.

If I were you I'd take a powerwasher to those threads to get the grime off. It won't hurt the coilover at all but it may save you some agony in the future if you want to adjust your height. Seller should have been nice and cleaned them better.
__________________

Current: Tesla Model 3 Performance Retired: F80 M3, FBO 335i, 318ti, C7 Stingray
Appreciate 0
      05-28-2013, 01:30 PM   #11
ashmostro
Brigadier General
United_States
1254
Rep
4,088
Posts

Drives: 2020 M4cs | 2022 M550i
Join Date: Jan 2013
Location: Falls Church, VA

iTrader: (27)

Quote:
Originally Posted by spiike32 View Post
Bad info in this thread.... v2 and v3's don't necessarily rebound by themselves. I know, I've held v3, v2, and v1's brand new in my hands. Don't worry about the bump stop dust cover, they're like 10 bucks from KW if you really wanted a new one.

If I were you I'd take a powerwasher to those threads to get the grime off. It won't hurt the coilover at all but it may save you some agony in the future if you want to adjust your height. Seller should have been nice and cleaned them better.
Indeed. Wipe on some antiseize in fact after cleaning them and you will be much happier if and when you want to adjust them on the car.
Appreciate 0
      05-29-2013, 07:09 PM   #12
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

thx guys!!!! looks like i will clean them tomorrow when i have time. What kind of soap you guys recommend? powerwash wont hurt the shock right?
Appreciate 0
      05-29-2013, 08:27 PM   #13
ashmostro
Brigadier General
United_States
1254
Rep
4,088
Posts

Drives: 2020 M4cs | 2022 M550i
Join Date: Jan 2013
Location: Falls Church, VA

iTrader: (27)

I don't recommend power washing the struts as you could put undue pressure on the seals if you get too close. just use a sponge and soapy water, dry, then lube the threads with antiseize.

On the rear adjuster power washing would be safe since the shocks are separated.
Appreciate 0
      05-30-2013, 03:51 AM   #14
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

Quote:
Originally Posted by ashmostro
I don't recommend power washing the struts as you could put undue pressure on the seals if you get too close. just use a sponge and soapy water, dry, then lube the threads with antiseize.

On the rear adjuster power washing would be safe since the shocks are separated.
Just use all purpose car wash soap to wash them. I simply put part in the water and use micro fiber to rub them and then use clean water to wash them again.
At last, use micro fiber to rub until they are dry.
That will be fine right?
Appreciate 0
      05-30-2013, 06:13 AM   #15
ashmostro
Brigadier General
United_States
1254
Rep
4,088
Posts

Drives: 2020 M4cs | 2022 M550i
Join Date: Jan 2013
Location: Falls Church, VA

iTrader: (27)

Don't submerge your shocks in water.

Keep it simple- soapy sponge, wipe threads, clean off and dry, apply lube of choice. /end
Appreciate 0
      05-30-2013, 01:10 PM   #16
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

Quote:
Originally Posted by ashmostro
Don't submerge your shocks in water.

Keep it simple- soapy sponge, wipe threads, clean off and dry, apply lube of choice. /end
Damn, I just did that, it will be fine right?
Appreciate 0
      05-30-2013, 06:00 PM   #17
KwlAznKid
Brigadier General
KwlAznKid's Avatar
354
Rep
3,036
Posts

Drives: BMW/MERCEDES/PORSCHE
Join Date: Jun 2005
Location: Los Angeles/Fremont USC/UCSD Alum

iTrader: (6)

Quote:
Originally Posted by jasonlu View Post
Damn, I just did that, it will be fine right?
as long as they weren't in for a LONG time you'll be fine, good thing you got kw and not st in this case. after you wash them see if there are any leaks, it'll indicate the signs of a blown shock and it'll need to be rebuilt for sure. I was going to tell you to test the compression but it seems someone else here said that for kwv3s that's not an accurate test
__________________
BMW E93 M3 / Mercedes Benz W209 CLK500
BMW E64 650I(sold) / BMW E92 328I(sold) / BMW E46 M3(sold) / BMW E92 335I(sold)
Porsche 996 911 C2(sold) / BMW E46 325CI(totaled)
Appreciate 0
      05-30-2013, 09:05 PM   #18
jasonlu
Captain
United_States
34
Rep
636
Posts

Drives: BMW335i
Join Date: Apr 2011
Location: SAN DIEGO

iTrader: (4)

I just put them inside the water then take it out. It was in there for less than a minute. No leak sign when I am putting them back to the box. You mean water leak from the gap of the shock?
Appreciate 0
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:31 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST