Strut recommendation 350f/650r spring rates

XR4Ti / Sierra / Sierra Cosworth Discussions - Questions, problem resolution, general talk, technical tips and modifications.
Post Reply
rab
Level 2
Level 2
Posts: 114
Joined: Fri Mar 11, 2011 11:19 am

Strut recommendation 350f/650r spring rates

Post by rab » Thu Jun 28, 2018 1:11 pm

Looking for a strut recommendation for the 88 xr4ti.
The car is has stock blown/old struts and 350lbs front coilover springs and 650lbs Camaro rear springs.
Also what length front springs are you guys running?
The car is pretty low currently and I want to keep it that way.
Last edited by rab on Thu Jun 28, 2018 5:03 pm, edited 1 time in total.

User avatar
John Brennan
Level 8
Posts: 11374
Joined: Wed Jun 18, 2003 4:19 pm
Location: Scottsdale, AZ "Summer Is Coming"

Re: Strut recommendation 650f/350r spring rates

Post by John Brennan » Thu Jun 28, 2018 2:12 pm

Wow, you sure you don't have those numbers backwards? 350/650 would be a stiff F/R setup... :shock:
This is my car, and these are my people!
1989 XR4Ti 5-Speed
2015 Fiesta ST
2015 Edge

hEaT
Level 7
Level 7
Posts: 3837
Joined: Mon May 07, 2007 10:12 pm
Location: MA, USA

Re: Strut recommendation 650f/350r spring rates

Post by hEaT » Thu Jun 28, 2018 2:27 pm

Ditto what John said, unless you're quoting wheel rates (rear 0.6:1 motion ratio).

Koni or Bilstein (hard to find), unless you want to go to Gaz or some similar full coilover.

How low is the car? You can convert the fronts to VW coilovers which give you lots of choices on "teh lows".
Joe
1985 Nimbus Grey XR
2017 Ford Focus RS

rab
Level 2
Level 2
Posts: 114
Joined: Fri Mar 11, 2011 11:19 am

Re: Strut recommendation 650f/350r spring rates

Post by rab » Thu Jun 28, 2018 5:01 pm

Yes those numbers are backwards, my mistake.

rab
Level 2
Level 2
Posts: 114
Joined: Fri Mar 11, 2011 11:19 am

Re: Strut recommendation 350f/650r spring rates

Post by rab » Thu Jun 28, 2018 5:05 pm

I just edited the thread name, now its correct.
As far as the vw stuff goes, I'll have to recheck what models and years fit.
I'm not sure how low I am compared to stock height, I'd say realatively low. I'll try to post a pic.
Does anyone have parts numbers to the bilstein and Konis for the xr.

hEaT
Level 7
Level 7
Posts: 3837
Joined: Mon May 07, 2007 10:12 pm
Location: MA, USA

Re: Strut recommendation 350f/650r spring rates

Post by hEaT » Thu Jun 28, 2018 7:39 pm

Bilstein B8 Front/Rear: 35-040415/24-018074

Koni Yellow Front/Rear: 8741 1074/80 2485
Joe
1985 Nimbus Grey XR
2017 Ford Focus RS

User avatar
Esteban
Level 7
Level 7
Posts: 1936
Joined: Wed Mar 24, 2010 2:07 am
Location: San Diego

Re: Strut recommendation 350f/650r spring rates

Post by Esteban » Fri Jun 29, 2018 2:02 am

The Bilstein B6 and B8, and Koni Sports can handle 650 rear. And these same brands will cover 350 front as well, no issues. You can find B8's on Ebay for $100 shipped each right now.

hEaT
Level 7
Level 7
Posts: 3837
Joined: Mon May 07, 2007 10:12 pm
Location: MA, USA

Re: Strut recommendation 350f/650r spring rates

Post by hEaT » Fri Jun 29, 2018 8:54 am

Esteban wrote:
Fri Jun 29, 2018 2:02 am
The Bilstein B6 and B8, and Koni Sports can handle 650 rear. And these same brands will cover 350 front as well, no issues. You can find B8's on Ebay for $100 shipped each right now.
If you mean from Autozone, I ordered them and it's clear they don't have them. Ordered, no communication, waited until the anticipated day I should have received them, asked for update, ordered canceled and refunded a few days later.

I ended up ordering a full set from TDC Automotive in the UK who were fantastic.
Joe
1985 Nimbus Grey XR
2017 Ford Focus RS

User avatar
Spaldino
Level 4
Level 4
Posts: 379
Joined: Mon Nov 29, 2004 9:34 am
Location: Kalamazoo, MI

Re: Strut recommendation 350f/650r spring rates

Post by Spaldino » Fri Jun 29, 2018 10:18 am

I am currently running these exact spring rates right now in my car with the Bilstein adjustable height coilover struts and shocks from MC2 Racing as well as a poly bushings everywhere. I was using this setup with stock 15" wheels and tire sizes at first, then went to 17x8 wheels with 225/45r17 PSS tires. Much stiffer than stock but feels great. I have absolutely no complaints about the ride at all, even on the total $#!* roads of south west Michigan. No fillings getting rattled out, no back pain, etc. I think it is a great combo if you want to carve corners with some gusto but still drive the car around town regularly.
88 Mono-white XR: Side exhaust, Walbro, MC2 Front Adjustable Coilovers, Rear Bilsteins, Full Poly bushings, MC2 Diff Mount, Rapido intercooler, Some sort of mild cam(?), Rear Disc conversion, 225s on 17x8 wheels.

User avatar
Esteban
Level 7
Level 7
Posts: 1936
Joined: Wed Mar 24, 2010 2:07 am
Location: San Diego

Re: Strut recommendation 350f/650r spring rates

Post by Esteban » Mon Jul 02, 2018 1:05 am

I think Blugg may still have a set of B6 fronts for sale. Very low mileage.

Post Reply