Hatch Support Shock Damper for the trunk

shadow

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do you have a link with the documentation of the FK8 strut pressure?
I don't think it is an illusion. Look at the spring clips. They should more or less run parallel to the strut. On small end they do. However, on the big end it is at a slight angle.

Honda Civic 10th gen Hatch Support Shock Damper for the trunk 1616377253806


Proof of pressure:

Honda Civic 10th gen Hatch Support Shock Damper for the trunk 1616376464721


and

Honda Civic 10th gen Hatch Support Shock Damper for the trunk 1616376631529
 
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FK7Build

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it does seem a little bit at an angle. My FK7 struts are 530N or 120lbs. I am going to order 140lbs. That new link you sent they seem to be out of stock. Going to try with that ebay seller.
 

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Found a few things out today. Here are a few videos. Will do a brief recap later this evening or tomorrow with specific data.

 

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flacobill

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I’m also interested in a solution.
I bought FK8 struts for an FK7 & like everyone else, found out they don’t work.... too short. How odd- never would have guessed that on the same body style....
I’d be very interested to hear from some UK folks. Over there, They have a sportline spoiler on both the CTR sportline & EX Sportline.
I have an FK8 & wifey has an FK7 with a uk sportline spoiler installed.
I’ll just keep the struts I bought & use them on my car when the originals wear out... lol

Honda Civic 10th gen Hatch Support Shock Damper for the trunk A32E7268-6C9B-45F0-900C-2BC4538AAAAE
 


flacobill

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Maybe @stephenmeadows can chime in from the UK...find anything out yet Stephen? The plot thickens...FK7 struts are actually longer and mount further down the side of the tailgate when comparing to the FK8
 

FK7Build

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I searched these:

https://www.liftsupportsdepot.com/custom-search/#?Customfieldextendedlengthain=22||22.5&Customfieldforcelbs=140||150&Customfieldendfittingtype=Ball+Socket&Customfieldendfittingsize=10MM&search_return=all&Customfieldcompressedlengthbin=0||15

I tried putting some in my cart but didn't try to check out. Is that where it said out of stock?

From the ebay seller, the closest 140 lbs struts are available in 19.7" and 24". It might stress the hinges if not allowed to fully extend.

In the videos above, are those with the OEM FK7 struts?
So there’s actually more problems involved. I’ll post in a little bit my findings.
This is the link I looked up:

https://www.liftsupportsdepot.com/22-09-lift-supports-depot-pm3867-lift-support-with-pm3867-w/
 

shadow

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FK7Build

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shadow

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I inputted all the parameters. Length, force, connector type, etc.

Honda Civic 10th gen Hatch Support Shock Damper for the trunk 1616486646131
 


FK7Build

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I searched these:

https://www.liftsupportsdepot.com/custom-search/#?Customfieldextendedlengthain=22||22.5&Customfieldforcelbs=140||150&Customfieldendfittingtype=Ball+Socket&Customfieldendfittingsize=10MM&search_return=all&Customfieldcompressedlengthbin=0||15

I tried putting some in my cart but didn't try to check out. Is that where it said out of stock?

From the ebay seller, the closest 140 lbs struts are available in 19.7" and 24". It might stress the hinges if not allowed to fully extend.

In the videos above, are those with the OEM FK7 struts?
The videos show the strut in the below link.

FINDINGS:
After searching the mighty interwebs and checking Amazon and eBay and going to NAPA, Advanced Auto Parts, and Autozone, I was able to find the closest match to our OEM FK7 struts. Here are my findings:


OEM Specifications (all data is approximate):
OIL BASED STRUT
Center to center length: 22.00”
Travel length: 7.50”
Compressed length: 14.75”
Pressure rating: 530 Newtons (approx. 120 pounds)



Autozone NITROGEN GAS BASED Strut C95208

Center to center length 21.91”
Travel length: 7.50”
Compressed length: 14.79”
Pressure rating MINIMUM: approx 590 Newtons (133.5 pounds)
Pressure rating MAXIMUM: approx 659 Newtons (148.5 pounds)

https://www.autozone.com/collision-...ort/mighty-lift-lift-support-c95208/28142_0_0


I searched through every singe available option in all the stores and pulled out every one to test. I found two that are possible that had data (there is a third but my findings are pending). The one in the link is the closest one out of the two and the one I purchased for the experiment.

CONCLUSION:
If you have an OEM FK8 this will most likely be the route you need to go since the pressure is right where you need it and the dimensions are near impossible to get better than this (not included the website @shadow posted - which I will be furthering my experiment with that at a later time).

If you have an aftermarket wing/spoiler/duckbill/want a stronger strut for the FK7 hatch, there lies ONE issue to resolve. The issue is this: there seems to be a threshold that the quarter panel sheet metal (which the ball for the strut is welded to) can handle. In the shorter of the two videos above, I note the DEFLECTION in the sheet metal. Notice how the strut when it gets fully extended it seems to spring back and cause the body of the car to FLEX.

I spent quite a number of time in these stores and online to find the closest match to the dimensions of the OEM FK7 strut. It seems that is just half the battle. The second half is getting the perfect PRESSURE rating of the strut.

My final analysis and what I will be doing in the near future: I believe if you have the Type R style wing from ABSDynamics (as I do), you will need to go with approximately 130-140 Pounds of pressure. I believe anything more than that is catastrophic to the integrity of the sheet metal in which the ball that the socket of the strut attaches to.

It has been shown that the OEM FK8 strut has a pressure rating of 142 pounds. I think that might be a little too much with the light aftetmarket spoilers (even though the ABSDynamics one seems to be one on the heavier side - still lighter than OEM FK8 wing).

All of that aside, I think it is worth mentioning that the OEM struts are oil filled. There seems to be a dampening effect due to that fact and I might try researching a comparable (oil filled) strut that has the FK7 dimensions.

I’m sure I missed something but hopefully someone can add onto this so we can find a nice aftermarket solution to the struggle our wives and children have when it comes to opening our heavy hatches (and sometimes fall back on their heads since they were open adequately enough).
Honda Civic 10th gen Hatch Support Shock Damper for the trunk C54C7657-9837-4FF0-B44E-452F3B7E3E5F
 

FK7Build

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I forgot to mention that due to the .04” longer compressed dimension, the strut I experimented with had two issues:

The first was it had a 1.00” less opening height than OEM (almost unnoticeable).

Secondly was that the hatch seemed to want to not close all the way. The motor would lock it, but one side for some reason would stick up about 1/8” inch. This was only on the drivers side though. Not sure why. Still looking into it.
 

flacobill

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Keep us posted.
I would think the struts from the uk FK7 sportline ex model would be a perfect solution but I never heard back from my uk contact when I asked him about this for a part number.
 

FK7Build

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Keep us posted.
I would think the struts from the uk FK7 sportline ex model would be a perfect solution but I never heard back from my uk contact when I asked him about this for a part number.
Are they stronger in the UK?
 

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The videos show the strut in the below link.

FINDINGS:
After searching the mighty interwebs and checking Amazon and eBay and going to NAPA, Advanced Auto Parts, and Autozone, I was able to find the closest match to our OEM FK7 struts. Here are my findings:


OEM Specifications (all data is approximate):
OIL BASED STRUT
Center to center length: 22.00”
Travel length: 7.50”
Compressed length: 14.75”
Pressure rating: 530 Newtons (approx. 120 pounds)



Autozone NITROGEN GAS BASED Strut C95208

Center to center length 21.91”
Travel length: 7.50”
Compressed length: 14.79”
Pressure rating MINIMUM: approx 590 Newtons (133.5 pounds)
Pressure rating MAXIMUM: approx 659 Newtons (148.5 pounds)

https://www.autozone.com/collision-...ort/mighty-lift-lift-support-c95208/28142_0_0


I searched through every singe available option in all the stores and pulled out every one to test. I found two that are possible that had data (there is a third but my findings are pending). The one in the link is the closest one out of the two and the one I purchased for the experiment.

CONCLUSION:
If you have an OEM FK8 this will most likely be the route you need to go since the pressure is right where you need it and the dimensions are near impossible to get better than this (not included the website @shadow posted - which I will be furthering my experiment with that at a later time).

If you have an aftermarket wing/spoiler/duckbill/want a stronger strut for the FK7 hatch, there lies ONE issue to resolve. The issue is this: there seems to be a threshold that the quarter panel sheet metal (which the ball for the strut is welded to) can handle. In the shorter of the two videos above, I note the DEFLECTION in the sheet metal. Notice how the strut when it gets fully extended it seems to spring back and cause the body of the car to FLEX.

I spent quite a number of time in these stores and online to find the closest match to the dimensions of the OEM FK7 strut. It seems that is just half the battle. The second half is getting the perfect PRESSURE rating of the strut.

My final analysis and what I will be doing in the near future: I believe if you have the Type R style wing from ABSDynamics (as I do), you will need to go with approximately 130-140 Pounds of pressure. I believe anything more than that is catastrophic to the integrity of the sheet metal in which the ball that the socket of the strut attaches to.

It has been shown that the OEM FK8 strut has a pressure rating of 142 pounds. I think that might be a little too much with the light aftetmarket spoilers (even though the ABSDynamics one seems to be one on the heavier side - still lighter than OEM FK8 wing).

All of that aside, I think it is worth mentioning that the OEM struts are oil filled. There seems to be a dampening effect due to that fact and I might try researching a comparable (oil filled) strut that has the FK7 dimensions.

I’m sure I missed something but hopefully someone can add onto this so we can find a nice aftermarket solution to the struggle our wives and children have when it comes to opening our heavy hatches (and sometimes fall back on their heads since they were open adequately enough).
C54C7657-9837-4FF0-B44E-452F3B7E3E5F.jpeg
Sorry if this is a stupid question, but will these struts fit the FK7?
 


 


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