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Old August 21st, 2013, 06:24 AM   #1
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Upgrading to stiffer springs

As many of you know, I'm running HT spec function and form type 1's. I've had them for over a year and roughly about 25k miles and have been great for a highway cruiser. They come with the standard f2 spring rates of 12k front and 6k rear but revalved to ht's specs for comfort. I asked Marcus at heeltoe to see what he thinks but he advised against it as the stiffer rates will degrade the shocks faster, blah blah blah. I feel he was playing it safe and I understand that.
I looked around and only found this thread: http://www.v6performance.net/forums/...over-help.html. He really didn't get an answer hence why I created this thread.
Personally, I'm looking at 14k front and 10k rear. Frankly, this is to hold me over until I'm able to afford air but I still want to throw the car around the corners a bit more confidently until then. Sorry for the long winded post.

Cliff notes: HT spec f2 type 1, stock spring rates 12k front 6k rear, want to upgrade to 14k front and 10k rear.
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Old August 21st, 2013, 07:58 AM   #2
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You will be fine with those rates and it won't wear out the suspension faster. It will just wear you out faster. If it were softer rates I'd understand because they would be moving each stroke more and more. I say 12 front 10 rear to help out the whole car or go with what you said. If the front already bottoms then go up to 14 and 12
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Old August 21st, 2013, 08:19 AM   #3
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That's what I was thinking. I already do enough to wear myself out so slightly stiffer springs won't do too much harm in that aspect. I may just go with Swift 12k front and 10k rear because I don't trust the off the shelf, advertised spring rates these coils have. They feel soft for a 12k front tbh.
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Old August 21st, 2013, 08:24 AM   #4
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But you also have to remember that the piston design of the strut itself along with oil viscosity plays a roll. Any spring will feel soft if the string can't keep up with it.
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Old August 21st, 2013, 08:28 AM   #5
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I swapped out my 12/7 KSport springs to the swift 14/10 on my 6th gen v6. Ride is great 10x better than the KSport springs, well worth the money
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Old August 21st, 2013, 08:51 AM   #6
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Quote:
Originally Posted by tcazes View Post
But you also have to remember that the piston design of the strut itself along with oil viscosity plays a roll. Any spring will feel soft if the string can't keep up with it.
Understood. I meant soft compared to solid steel rod in place of the coils. It is much stiffer than stock, obviously, but I want more. Like I said before, I don't believe the advertised spring rates of these coils which is why they feel soft for a 12k spring.
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Old August 21st, 2013, 08:57 AM   #7
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I gotcha bud. I say go for it. Swift springs are good stuff.
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Old August 21st, 2013, 09:05 AM   #8
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On ksports Megan's FF D2s all allow +/- 2k so you won't need revalving in the front . I didn't revalve my rears I'm thinking doing 12k rear swift in future
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Old August 21st, 2013, 09:09 AM   #9
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Now to find a distributor on the cheap. lol
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Old August 21st, 2013, 09:12 AM   #10
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http://www.streettunedmotorsports.co...pec_chart.html
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Old August 21st, 2013, 09:13 AM   #11
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Just contact F & F and get your spring measurements you'll need the width and height of your current springs
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Old August 21st, 2013, 09:26 AM   #12
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http://www.streettunedmotorsports.co...spec_chart.htm

This one works
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Old August 21st, 2013, 10:10 AM   #13
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any kind of spring will work as long as size is right. i'm PRO for higher spring rates, car rides better.
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Old August 21st, 2013, 10:20 AM   #14
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I remembered your thread Jowell when you switched the springs in your GC's. Next paycheck or two, I'll pull the trigger.
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Old August 21st, 2013, 11:29 AM   #15
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Speaking of which, anyone have a hookup?
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Old August 21st, 2013, 11:46 AM   #16
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Im in the same boat and I'm aiming for the same spring rates

Im a bit upset that I didn't think of swapping the front 10k's with my 6k's from a set of brand new civic type ones I had laying around before I sold them. Anywho I found this info on another forum and I figured it might be helpful for you.
Quote:
Hello everyone, Im looking to get some swift springs for my funtion form type 1's for my 04 tsx. Now I spoke with ff and got the stock spring info from their type1's but now this is where I need your help.

I want to be able to go lower, and have a stiffer ride so the stock type1 specs are as follows
Front:
Length- 200mm
Diameter- 2.5''
Spring Rate-12k

Rear:
Length- 220mm
Diameter- 2.5''
Spring Rate- 6k

So I was thinking of ordering 180mm length for the front and 200mm for the rear.
Same diameter, but changing the spring rates to 14k or16k front and 10k or 12k rear since the rears are super soft. I really appreciate any and all help.
Two idea's you can think about is to get 14k fronts and just swap the front 12k's to the rear or you can make some spring spacers out of polyurethane (it takes a bit of work and but will only cost about $10).

I actually made some polyurethane spacers for my springs last week and it made a major difference. They make the spring act like a shorter spring which in terms makes it stiffer. The only downside to using the spring spacers is you have to make sure they don't fall out when you raise the car.

Last edited by Wolfy47; August 21st, 2013 at 11:57 AM..
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