Trunk mod - no more partially open trunk! - Hyundai Forums : Hyundai Forum
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post #1 of 182 (permalink) Old 02-12-2015, 05:56 PM Thread Starter
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Trunk mod - no more partially open trunk!

Got annoyed with the trunk only opening up a few inches, so I took some inspiration from a few of the other threads here and did a quick and cheap mod to get the trunk to fully open!

Video of the result:
https://vine.co/v/OPMKbqzvz7v

The basic idea was to give the torsion bars that open the trunk a bit of an extra push.

Required:
- Extension springs. 3.5" long (too long and it will sag and fall off in its relaxed position, too short and it might place too much stress on the spring). On the back of the package it says safe working load of 2.1lb, don't know if that is relevant. Cost: ~$4.
- Clips to hook the spring onto the torsion bar and the car. Cost: ~$0.50. I ended up using two kinds: 1/4" rubber lined clips to hook onto the torsion bar, and mirror clips I already had to hook onto the frame of the car. More on that later.



Those black rods are the torsion bars that provide the "twist" that opens the trunk. Unfortunately on my car, they only seem to lift the trunk up a few inches...


Extension Spring


Rubber Lined Clamps. I didn't want metal to metal contact, hence the rubber. The width of the clamp prevents it from moving around the bend in the tension bar. Also, don't try using S hooks or something that fits loosely because what you will find is that when the spring is stretched, the hook will snap around the corner of the tension bar and return to it's slack position. Chances are good something will fly off and hit you in the face, especially when one is lying in the fetal position inside the trunk working off the flashlight on the phone.

I didn't take a picture of the mirror clips, but they are just your basic metal mirror clips. I wrapped vinyl electrical tape on it to avoid metal to metal contact, and then stuffed some sponge material where it contacts and presses against the car frame.


This is how I hooked it up, with the trunk in the open position and the spring in it's relaxed position. Mirror clip with sponge on the upper left, rubber lined clamp around the torsion bar on the lower right.


View from the side with the trunk closed. Spring is in stretched position.


View looking up with the trunk closed.

With one spring thus installed, the trunk would fully open, but I'm an impatient person so I put both springs in (one on each side) so now the trunk opens up at a snappy pace, and it does not require noticeably any more force to close it.

Enjoy!
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post #2 of 182 (permalink) Old 02-12-2015, 07:46 PM
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nice mod!!
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post #3 of 182 (permalink) Old 02-12-2015, 10:07 PM
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Brilliant!!!!! Thank you for sharing!! BTW what's the blue paint in your trunk?
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post #4 of 182 (permalink) Old 02-13-2015, 09:43 AM
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Hyundai ought to hire you as an engineer. Their professionals apparently couldn't even figure this out.
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post #5 of 182 (permalink) Old 02-13-2015, 10:23 AM
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Awesome mod!

Sales & Leasing Representative @ Kitchener Hyundai

Questions with your Hyundai? Call me at anytime here 519.742.4400
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post #6 of 182 (permalink) Old 02-13-2015, 11:13 AM
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Can you make a install video, for novice users
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post #7 of 182 (permalink) Old 02-13-2015, 03:04 PM Thread Starter
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Quote:
Originally Posted by demingphilip View Post
Brilliant!!!!! Thank you for sharing!! BTW what's the blue paint in your trunk?
The blue paint could be overspray from the painting process? My Sonata is blue in color.
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post #8 of 182 (permalink) Old 02-13-2015, 03:11 PM Thread Starter
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Originally Posted by user828 View Post
Can you make a install video, for novice users
I had enough trouble taking pictures with the trunk closed, don't think I can manage taking a video while clipping a spring into place. Was nice to know that my 6' frame can fit in the trunk, although I wouldn't make it a habit.

Installation is simple enough if you take a peek at the trunk mechanism. There is nothing permanent about it and no drilling or adhesives are required. The hardest part was figuring out the right spring length. I tried 3 different lengths before settling on the 3.5" one. With the trunk fully open, the spring should be near it's shortest (relaxed) length, with just enough tension that it doesn't fall off. Also, if you end up using different sized clamps that I did, that might alter the spring length too. I found the springs and clamps at Lowes.

If you need additional tips, ask away and I can try to help.
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post #9 of 182 (permalink) Old 02-13-2015, 03:24 PM
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I shared info about this trunk mod in the "Pictures of your LF" thread and if you don't want to make your own springs assembly, you can buy this instead:

Amazon Amazon

I personally purchased mine from a South Korean tuner site directly and it is really simple and easy to use. My order from Korea, like the ones sold on Amazon, came in a pack of two springs but I only needed to use one. It worked out really well for me because I used one spring on my Eco and installed the other spring on mom's Sonata.

Here is a video of it in action on my mom's Sonata:
https://www.youtube.com/watch?v=9B3eW5k4J-A
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post #10 of 182 (permalink) Old 02-13-2015, 03:44 PM Thread Starter
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Originally Posted by optimummind View Post
I shared info about this trunk mod in the "Pictures of your LF" thread and if you don't want to make your own springs assembly, you can buy this instead:

Amazon.com: Silver Tone Purple Automatically Car Boot Lid Trunk Lift Spring 2 Pcs: Automotive

I personally purchased mine from a South Korean tuner site directly and it is really simple and easy to use. My order from Korea, like the ones sold on Amazon, came in a pack of two springs but I only needed to use one. It worked out really well for me because I used one spring on my Eco and installed the other spring on mom's Sonata.

Here is a video of it in action on my mom's Sonata:
https://www.youtube.com/watch?v=9B3eW5k4J-A
That's a nice find! I did remember your post but I couldn't find it again.
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