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Old 05-17-2018, 10:22 PM   #1
demi9od
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Trim these bumps or no?

Where to trim if so?





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Old 05-18-2018, 06:25 AM   #2
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For your 1”drop I would trim one nub off.
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Old 05-18-2018, 08:59 AM   #3
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This was just posted:
https://www.golfmk7.com/forums/showp...&postcount=172

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Old 05-18-2018, 01:58 PM   #4
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Quote:
Originally Posted by snobrdrdan View Post
Huh... Seemed like the bumps on top made it fit tight in the shock mount. Wonder if there is any harm and losing them and keeping the lower part like that.

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Old 05-18-2018, 02:22 PM   #5
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I trimmed mine when I installed my Emmotion springs. You already lose travel, I usually always trim them a bit. No issues.. Over a year and over the winter.

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Old 05-18-2018, 02:31 PM   #6
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I trimmed mine when I installed my Emmotion springs. You already lose travel, I usually always trim them a bit. No issues.. Over a year and over the winter.

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Left just the bottom like pic above?
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Old 05-18-2018, 02:53 PM   #7
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Does trimming let the shock stroke deeper and does this impact shock life?
I know not trimming may cause early bottoming out.
Thought question.
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Old 05-18-2018, 04:20 PM   #8
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Quote:
Originally Posted by demi9od View Post
Left just the bottom like pic above?
Yeah, I usually cut in half. You wouldn't think it would help with the ride but I Def noticed it.

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Old 05-18-2018, 04:24 PM   #9
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Originally Posted by Travis9935 View Post
Yeah, I usually cut in half. You wouldn't think it would help with the ride but I Def noticed it.

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I'll take the dust boot off, re-install the shock, set the rotor down on a wooden ramp to load it, then take a picture. That should give everyone a good idea of how much travel is left before I cut mine. I assume weight loading the rotor on a stack of 2x10s is fine.
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Old 05-18-2018, 04:45 PM   #10
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Quote:
Originally Posted by demi9od View Post
I'll take the dust boot off, re-install the shock, set the rotor down on a wooden ramp to load it, then take a picture. That should give everyone a good idea of how much travel is left before I cut mine. I assume weight loading the rotor on a stack of 2x10s is fine.
It's when it decompresses and compresses (bounds/rebounds) is when it takes the biggest hit. Not with vehicle weight. I've never really heard mine bottom out over big pot holes. The stiffer springs help with it too.

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Old 05-18-2018, 04:48 PM   #11
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If you haven't done so, most vehicles you can pull the dust cover down and use a razor and trim them when the car is jacked up and theres enough space between the coils to do so.

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Old 05-18-2018, 04:55 PM   #12
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Quote:
Originally Posted by Travis9935 View Post
It's when it decompresses and compresses (bounds/rebounds) is when it takes the biggest hit. Not with vehicle weight. I've never really heard mine bottom out over big pot holes. The stiffer springs help with it too.

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Sure but this was just to illustrate travel length available with vehicle weight and full length bumps.

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If you haven't done so, most vehicles you can pull the dust cover down and use a razor and trim them when the car is jacked up and theres enough space between the coils to do so.

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Good tip, but the rears need to be adjusted softer anyways so they are coming back out. I doubt I will trim the front.
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Old 05-18-2018, 07:26 PM   #13
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Quote:
Originally Posted by Sandman GTI View Post
Does trimming let the shock stroke deeper and does this impact shock life?
I know not trimming may cause early bottoming out.
Thought question.
If you donít trim them you might be hitting the bump stops which is no bueno.

Quote:
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Left just the bottom like pic above?
Trim the smaller nub towards the travel.

Back in the day there was always an Audi bump stop that you could sub out tat was shorter. Donít know if anyone has found one to pair with our cars yet.
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Old 05-19-2018, 09:56 AM   #14
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Quote:
Originally Posted by demi9od View Post
Wonder if there is any harm and losing them and keeping the lower part like that.
YES, don't do that, then it wouldn't stay up in the shock mount any longer

You need to trim the lower part!
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Old 05-19-2018, 04:59 PM   #15
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Quote:
Originally Posted by Sandman GTI View Post
Does trimming let the shock stroke deeper and does this impact shock life?
I know not trimming may cause early bottoming out.
Thought question.


A bump stop is basically a secondary spring and is used to control the end of travel behavior. Distance from end of tube, Contour and material describe engagement and progressive rate. Bump stops have a free length and a block height.

With the same shock length ďend of tube - center of lower fastenerĒ if you trim a bump stop your shock will stroke deeper because you changed the block height. Does that impact your shocks life? It depends on the brand. Your car is using definitely more compression travel!

In terms of adjustable Koniís it might not be the best idea to shorten the bump stops because you might hit the adjustment feature while driving over bigger bumps.

I understand why guys like to trim bump stops. In the OE world many manufacturers I worked with have a distance between end of tube and bump stop of ~15mm. If you lower your vehicle now by 25mm you are already riding on the bump stops. With the progressive rate of these bump stops it feels to bumpy.

What is the solution if you want to lower your car? If you donít like the ride and the shock supplier doesnít recommend or provides a different bump stop try to find a shorter one that has at least a similar block height / block force.




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Old 05-19-2018, 07:08 PM   #16
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I trimmed the lower part of the stops and lowered the damping from 1.75 turns to stiff, to .75 turns to stiff. The difference is night and day, but I think mostly due to the damping and not the bumps. You would need far less bump stop and possibly none at all to engage the adjustability feature.

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Old 05-22-2018, 08:26 AM   #17
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Quote:
In terms of adjustable Koniís it might not be the best idea to shorten the bump stops because you might hit the adjustment feature while driving over bigger bumps.
The shock has to fully compress to come close to the adjuster, and with the shock mount installed/on the car...that can't happen & would prevent that from happening.
So even with the shortest possible bump stop there, it still wouldn't happen
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