Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - Reply to Topic
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Racing Discussions > Autocross Racing > Custom rear spring perches

Autocross Racing The place to discuss information about autocross stats, tips and events. Track sanctioned events only.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Thread: Custom rear spring perches Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
01-04-2013 05:16 PM
felixthecat
Quote:
Originally Posted by ecugrad View Post
already do

Sent from my SCH-I510 using FF Mobile
Me too, upgraded from Eibach's 25mm. I was just mentioning to the other guys above. Kind of surprised they don't w/ dia weight transfer.
01-04-2013 05:00 PM
ecugrad
Quote:
Originally Posted by felixthecat View Post
Would it help you guy's to run Steeda's 28.6mm/1 1/8th rear sway bar?
already do

Sent from my SCH-I510 using FF Mobile
01-04-2013 04:52 PM
felixthecat Would it help you guy's to run Steeda's 28.6mm/1 1/8th rear sway bar?
01-03-2013 09:52 AM
ecugrad Here is what I did:




You can get those perches on ebay for under $25 for a pair. I used a 6" x 2.5 x 400 lb rear spring with a Hypercoil Tender spring to keep the spring from falling out. Its slightly lower than the stock SVT springs. I wish it were a tad lower. No rattles and feels good on the street.
12-15-2012 06:24 PM
02svtf300 I've heard dominant Engineering has some good set up maybe we can make you a coilover bottom seat with his tubular control arms
12-15-2012 01:51 PM
2000blackzx3 Thanks for the pics, from what I can see you use the control arm hole as centering and its top edge as the vertical contact surface. Are the 3 screws for tightening the perch to the arm with the black washer from underneath? (I just want to eliminate any possible clunking if it's not tightened, stock springs clunk if rubber is removed from the bottom coil)

Any input on existing spring diameters and heights commonly available to test different spring rates? I guess I will use my FK perch at top and fit a machined perch for the same I.D. at the bottom. That KW bottom perch is 3 parts right? Male threaded top part with hexagonal hole accessible from underneath, female threaded bottom part and washer to tighten the part from underneath? Am I right on this?
12-15-2012 01:01 PM
thenorm KW coilovers have the spring seat at the bottom like you are talking about.
my old FS thread has some pictures of the orignal seats, plus some custom ones i machined to gain some height.
http://www.focusfanatics.com/forum/showthread.php?t=283747
12-15-2012 10:53 AM
2000blackzx3
Custom rear spring perches

I'm looking for ideas as far as getting some spring options in the rear. I have FK coilovers 400F/350R right now, and I'm considering using SWIFT coilover springs (at least for the front) with revalved Konis, but I may try to fab some rear perches that would allow me to fit standard diameter coilover springs on the rear control arms.

What have you guys done to get 400+ spring rates at the rear? What are the options without a custom bottom spring seat? Any spring seat I can source somewhere without making one? (My FKs are installed with the adjustable perch at the top, and the spring fits in the original control arm location at the bottom). I thought about bolting a machined spring perch through the arm, sandwiched with a plate (big washer) underneat.

What spring rates would you suggest for mostly autocross, and maybe some road racing? I'm thinking about 500F/500R as a starting point. I have 21mm F and 24mm R sway bars, and will run in FSP next year on C71 Z214 in 225/45/15 if budget allows. A Torsen LSD will be installed. The car was close to neutral this year, but could use a little more stiffness at the rear.

Here's a reference pic (not my car) :


Show us your setups!

Posting Rules
You may post new threads
You may 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 09:28 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat