Clear the air: Rear spring perch/coilovers

DZheng · 08-15-2013, 03:59 PM

Quote:

Originally Posted by KevinDonut

thanks dabs4days...and i know the reason why they're missing on mine since i bought it CPO...

Hey i have an extra set. do you wanna buy it from me?Mssg me

everlast · 08-24-2013, 02:23 AM

Here's my KW v1 on my E91 xi. The KW had instructions that specified the adjuster goes on top. The coil fits into the rubber in the control arm, and the top of the adjuster goes in the hole where the 'tin cap' was.

ds2000 · 12-20-2013, 12:56 PM

Don't you feel a big gap between the spring perch and the car chassis?

I've tried to do this on my V1's but is doesn't feel safe becase of this gap.

I've not removed the top cup yet. If I remove it, the gap will be obviously bigger.

jwzimm · 12-20-2013, 02:13 PM

You need to remove the cup!! It has a boss that goes into a hole in the chassis. The top perch has a similar boss that engages the chassis. Just follow the video and instructions in the kit.

ds2000 · 12-20-2013, 02:25 PM

Thank you for the answer.

A boss? Can you show me a picture?

So the perch doesn't fit directly in the chassis hole?

I don't have the instructions..

dtea604 · 12-20-2013, 02:48 PM

Cant really say since I Dont have my coils install yet. But my Indy also said top and follow the instructions on the manual

jwzimm · 12-20-2013, 03:31 PM

Quote:

Originally Posted by ds2000

Thank you for the answer.

A boss? Can you show me a picture?

So the perch doesn't fit directly in the chassis hole?

I don't have the instructions..

See attached.

parabmw · 12-20-2013, 04:22 PM

great video. I didn't know it was that easy. Ive always paid someone. ...I may give it a try.

ds2000 · 12-20-2013, 08:12 PM

Quote:

Originally Posted by jwzimm

See attached.

The problem is that the diameter of that boss is a lot smaller than the diameter of the chassis hole.

jwzimm · 12-20-2013, 10:02 PM

Quote:

Originally Posted by ds2000

The problem is that the diameter of that boss is a lot smaller than the diameter of the chassis hole.

Not really. Here are the installation instructions from KW's website. Check out pages 10 and 11.

ds2000 · 01-08-2014, 11:14 AM

Thank you very much, it really fits

I made some confusion.

Kevindshea · 10-13-2019, 07:08 PM

Quote:

Originally Posted by ds2000

Thank you very much, it really fits

I made some confusion.

Anybody know the spring length and spring rate on the rear springs kw v1 e90 rwd? I assume it’s 60mm ID but I’m trying to find out spring length

330Paddy · 10-23-2019, 05:41 PM

Debating the same coilovers myself, do you rate then? Undecided atm

Jeffman · 07-25-2024, 03:43 PM

My KW V1s were originally installed 11 years ago by VAC Motorsports. 50,000 miles later and they’re worn out so I’ll be having them redone / replaced under lifetime warranty. So now I’m uninstalling them to install the new ones myself, and “lo and behold” VAC had installed the original ones upside down! Why? Because on my 2008 335xi E90 the chassis hole for the spring perch is TOO SMALL for the KW purple/black spring perch. But it will kind of sloppily fit upside down in the lower control arm. So, yes, upside down for some cars. But that sloppiness is bugging me.

08-24-2013, 02:23 AM	#24
everlast Malt'm'n'Salt'm 15 Rep 229 Posts Drives: 2008 328xiT Join Date: Jul 2008 Location: Ottawa, ON iTrader: (0)	Here's my KW v1 on my E91 xi. The KW had instructions that specified the adjuster goes on top. The coil fits into the rubber in the control arm, and the top of the adjuster goes in the hole where the 'tin cap' was. Attached Images
	Appreciate 0 Quote

12-20-2013, 12:56 PM	#25
ds2000 New Member 0 Rep 21 Posts Drives: 320d E90 Join Date: Jun 2011 Location: Portugal iTrader: (0)	Don't you feel a big gap between the spring perch and the car chassis? I've tried to do this on my V1's but is doesn't feel safe becase of this gap. I've not removed the top cup yet. If I remove it, the gap will be obviously bigger.
	Appreciate 0 Quote

12-20-2013, 02:13 PM	#26
jwzimm Colonel 692 Rep 2,770 Posts Drives: '16 M3 Join Date: Jun 2011 Location: Renton, WA iTrader: (17)	You need to remove the cup!! It has a boss that goes into a hole in the chassis. The top perch has a similar boss that engages the chassis. Just follow the video and instructions in the kit.
	Appreciate 0 Quote

12-20-2013, 02:25 PM	#27
ds2000 New Member 0 Rep 21 Posts Drives: 320d E90 Join Date: Jun 2011 Location: Portugal iTrader: (0)	Thank you for the answer. A boss? Can you show me a picture? So the perch doesn't fit directly in the chassis hole? I don't have the instructions..
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12-20-2013, 02:48 PM	#28
dtea604 Lieutenant 28 Rep 544 Posts Drives: 06 E90 325i Join Date: Jan 2012 Location: Vancouver iTrader: (0)	Cant really say since I Dont have my coils install yet. But my Indy also said top and follow the instructions on the manual __________________ --------------------------- VMR VB3 // Mtec v4 AE //Nokya 7000k // M-tec LED plate lights // OEM blacklines // 20% window tint // Cyba air scoops // K&N + charcoal filter delete // BMS Powerbox // front splitters // Hamann front lip// M-tech trunk lip // Magnaflow custom // ER SS brakelines // KW V1's // RS tecknik spacers // H&R spacers
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12-20-2013, 04:22 PM	#30
parabmw Major 170 Rep 1,038 Posts Drives: 2018 m4 Join Date: Aug 2013 Location: canada iTrader: (0)	great video. I didn't know it was that easy. Ive always paid someone. ...I may give it a try.
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01-08-2014, 11:14 AM	#33
ds2000 New Member 0 Rep 21 Posts Drives: 320d E90 Join Date: Jun 2011 Location: Portugal iTrader: (0)	Thank you very much, it really fits I made some confusion.
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10-23-2019, 05:41 PM	#35
330Paddy Registered 0 Rep 3 Posts Drives: Bmw e90 330d Join Date: Oct 2019 Location: West Yorkshire iTrader: (0)	Debating the same coilovers myself, do you rate then? Undecided atm
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07-25-2024, 03:43 PM	#36
Jeffman Lieutenant 32 Rep 492 Posts Drives: 2008 335xi E90 Join Date: Jul 2010 Location: Somewhere in America iTrader: (1) Garage List 2008 335xi Sedan [0.00]	My KW V1s were originally installed 11 years ago by VAC Motorsports. 50,000 miles later and they’re worn out so I’ll be having them redone / replaced under lifetime warranty. So now I’m uninstalling them to install the new ones myself, and “lo and behold” VAC had installed the original ones upside down! Why? Because on my 2008 335xi E90 the chassis hole for the spring perch is TOO SMALL for the KW purple/black spring perch. But it will kind of sloppily fit upside down in the lower control arm. So, yes, upside down for some cars. But that sloppiness is bugging me.
	Appreciate 0 Quote