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Tubular subframe/Kmember for the rotary FC

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Old May 28, 2018 | 09:31 AM
  #1  
Phish806's Avatar
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From: Des Moines IA
Thumbs up Tubular subframe/Kmember for the rotary FC

I currently make a tubular K member for the FC but it is made for an LSx swap. I am curious if anyone would be interested in these for a rotary powerd vehicle. If there is enough interest, i will start producing them for the stock rotary setup in an FC as well. Let me know your thoughts and if you would have interest.

Thanks.

** pics of the LSx subframe that i sell***


Tubular subframe/Kmember for the rotary FC-ncrxqdp.jpg

Tubular subframe/Kmember for the rotary FC-bmwj2y6.jpg

Tubular subframe/Kmember for the rotary FC-jx6vrin.jpg

Tubular subframe/Kmember for the rotary FC-suqesum.jpg
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Old Jun 4, 2018 | 02:14 PM
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I may be interested one day but certainly not yet. That being said how does the weight compare? And any ideas on rigidity?
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Old Jun 5, 2018 | 09:04 PM
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Great piece of work. Kudos!
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Old Jun 7, 2018 | 11:14 AM
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The prototype k member with LSX mounts weighed in at 24 Lbs. My old Stock K member with LSx mounts weighed in at 33 lbs. Thats a 9 lb difference between the two pictured above.

I do not have any rigidity numbers. The first few are finally getting into running cars so we will see how they hold up in a real world environment. That being said, these first few cars are not youre average power cars. A couple are purpose built drag cars so they should put them through the paces and we should know how well they hold up pretty quickly.
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Old Aug 3, 2018 | 10:36 PM
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That’s a really nice looking piece of kit. Looks like it might provide better access to the bits around the rear subframe too; I remember fighting for quite some time with a breaker bar, long ago, trying to get a diff replace. Doesn’t hurt that this also seems like it’d be stronger and lighter than the factory piece. I’d buy one if I had an FC to put it on, and a shop to work on it in... maybe next year.
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Old Aug 4, 2018 | 06:25 AM
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****. If these direct fit a REW, that would really resolve a LOT of issues and be a lot more profitable for you.

Best of luck, I saw this on Facebook and love your work man. Really excellent stuff, worth every penny.
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Old Aug 7, 2018 | 12:43 PM
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Originally Posted by SirLaughsALot
****. If these direct fit a REW, that would really resolve a LOT of issues and be a lot more profitable for you.

Best of luck, I saw this on Facebook and love your work man. Really excellent stuff, worth every penny.
That to me makes the most sense. A tubular K member that properly mounts a 13B-REW vs. the engine mount adapters that people seem to not be too fond of.
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Old May 26, 2025 | 02:01 PM
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Update

[QUOTE=Phish806;12277797]I currently make a tubular K member for the FC but it is made for an LSx swap. I am curious if anyone would be interested in these for a rotary powerd vehicle. If there is enough interest, i will start producing them for the stock rotary setup in an FC as well. Let me know your thoughts and if you would have interest.

Thanks.

** pics of the LSx subframe that i sell***


Attachment 749750

Attachment 749751

Attachment 749752

Are these still being made
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