first time fork seal/oil replacement -- got spring questions for ya - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
V-Strom Service and Maintenance Questions and Discussions Share your service and maintenance information-questions. Please include your year and model in the text of your post.

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post #1 of 9 Old 02-09-2019, 09:00 PM Thread Starter
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first time fork seal/oil replacement -- got spring questions for ya

I know that I should have done this long ago, but..... well, I finally got to it. I am changing the fork oil and seals on my 08 Vee. There were some rough patch struggles here and there so far getting things apart, but at this moment both fork tubes are totally disassembled and I'm cleaning them.

The shop manual suggest measuring the springs. So I did. The shop manual suggests my springs have a service limit of 17.4 inches. Both of my springs are 17.0 inches. Are they just tired and worn out, compressed a half inch due to weakening from use?

Both are the same length -- 17 inches. I have never noticed any issues with the front end (or maybe I just didn't know any better). My ride seemed fine to me. My front tires never showed any abnormal wear or cupping. Have I simply been lucky or is a half inch really not that big of a deal?

I would be inclined to buy OEM springs as replacement. What guidance would you give me as far as what springs to consider? and why? What springs to put in as replacements is about as hot a topic as what oil to use or what tires to buy, so I doubt any two of you will have the same opinion. But I'd appreciate guidance on replacement springs. I typically ride 80% on paved roads. This summer I've got a long trip planned up into Canada and Alaska, so my percentage of dirt, gravel and mud roads will spike this year. I should take that into consideration too.

Thanks for your input.
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post #2 of 9 Old 02-09-2019, 10:00 PM
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I'd get new springs, and check with Sonic Springs for recommendations. He should be along soon I suspect....
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post #3 of 9 Old 02-09-2019, 11:37 PM
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Youíll get better handling and braking control, and a more comfortable ride if you put good aftermarket springs in. All the better straight rate springs from a reputable company (Sonic, Race-Tech, Ohlins, Eibach, etc...) will be functionally identical, so go with whoever you feel has the best combination of service, support and price.

I use Sonic Springs exclusively, but Iím pretty biased. 😀
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post #4 of 9 Old 02-10-2019, 05:04 PM Thread Starter
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I use Sonic Springs exclusively, but Iím pretty biased. 😀
probably not biased as much as knowledgeable. LOL

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post #5 of 9 Old 02-11-2019, 12:30 PM Thread Starter
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can anyone tell me what the original length of the fork springs are? the shop manual says their service limit is 17.4 inches but it never references the original length. the Suzuki shops that I have called don't know. my google-fu is failing me too, because I haven't found any measurements on line.

with my springs at 17.0 inches, it just makes me wonder what the original length is. anyone know? anyone? bueller?

thanks
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post #6 of 9 Old 02-11-2019, 06:40 PM
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Quote:
Originally Posted by Yarz1 View Post
can anyone tell me what the original length of the fork springs are? the shop manual says their service limit is 17.4 inches but it never references the original length. the Suzuki shops that I have called don't know. my google-fu is failing me too, because I haven't found any measurements on line.

with my springs at 17.0 inches, it just makes me wonder what the original length is. anyone know? anyone? bueller?

thanks
It's been a looooong time since I measured a stock one, but if memory serves it was 17.75"

It's not something that really matters, the stock springs are crap even when new, so if you're buying springs just get some better aftermarket ones.
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post #7 of 9 Old 02-11-2019, 08:14 PM
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Agreed. The stock spring length doesn't matter, and the current length doesn't matter. They're junk. Place them into the nearest metals recycling bin and and replace with Sonic springs.

All my motorcycles are wearing Sonic springs. They're fantastic. Get you some and ride happy.

Even if you're the gentlest of riders, the first thing you'll notice is less brake dive. You'll be safer since your suspension won't sproing around wildly and bottom out when maneuvering and braking.



I don't know why, but Suzuki since time immemorial has delivered motorcycles to the US very badly undersprung.

Some say it's because their test riders are an elite cadre of retired Japanese ballerinas and jockeys. Some say they're still using up a trainload of specially soft and porous spring wire acquired at a steep discount in the '60s from a mysterious Hamamatsu scrapyard.

Suzuki fork springs are crap and one really knows why. That's just the way it is.

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post #8 of 9 Old 02-11-2019, 08:34 PM
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For the record coil springs don't get weaker over time they get as the OP experienced shorter giving the illusion that are weaker. No different than taking a new spring and cutting 0.4" off of it.
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post #9 of 9 Old 02-12-2019, 09:08 AM
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Quote:
Originally Posted by PerazziMx14 View Post
For the record coil springs don't get weaker over time they get as the OP experienced shorter giving the illusion that are weaker. No different than taking a new spring and cutting 0.4" off of it.
I was under the impression that a (new) shorter spring is stronger, and that springs do indeed get weaker with use. An older spring that is worn will be shorter because it lacks the strength to sping back to original length.
I'm no expert, maybe someone has a scientific explanation.

I don't want a pickle, I just want to ride my motorsickle. A. Guthrie.
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