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2022 STU discussion

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Old Oct 12, 2022, 03:08 PM
  #361  
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Originally Posted by LV///R
I was leaning towards the Titanium shims, stainless pistons, Castrol fluid.
EvoMs got me to get all those early this year. from racingbrake.com and map

Originally Posted by LV///R
Maybe I missed - but did you make those air ducts/diverters for the undertray?
They're "CF" mudflaps from ebay! you can form the plastic with a heatgun
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Old Oct 12, 2022, 03:19 PM
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let me know if someone finds longer ones
https://www.ebay.com/sch/i.html?_from=R40&_nkw=carbon++mudflaps&_sacat=0&LH _TitleDesc=0&_sop=15
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Old Oct 16, 2022, 10:45 AM
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Originally Posted by ViciousLSD
EvoMs got me to get all those early this year. from racingbrake.com and map



They're "CF" mudflaps from ebay! you can form the plastic with a heatgun
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Whyd i get tagged haha. I didnt do it!
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Old Oct 16, 2022, 12:50 PM
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Originally Posted by Bee-Raddd
Whyd i get tagged haha. I didnt do it!
ha just want to show you my hack job
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Old Oct 17, 2022, 07:34 AM
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Originally Posted by Dallas J
I have some old school brake ducts that fit the OEM brakes for I think 2.25 or 2.5" hose. If you want them to try, they're yours.

They dont work with SSB uprights and I have an idea of what to do for my parts for an additional duct.
I'll take you up on that Dallas, thanks!
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Old Oct 17, 2022, 10:21 AM
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Originally Posted by ViciousLSD
They're "CF" mudflaps from ebay! you can form the plastic with a heatgun
Now I'm thinking I should 3D print some brake air guides in CF-reinforced Nylon. Would be nice to be able to press a button and print new ones every time I destroy them.
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Old Oct 17, 2022, 10:57 AM
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Originally Posted by Construct
Now I'm thinking I should 3D print some brake air guides in CF-reinforced Nylon. Would be nice to be able to press a button and print new ones every time I destroy them.
you should, with a horizontal element I might try the low profile tube... maybe you can make a bezel for me so I can mount the ducting on the bumper lip
Last edited by ViciousLSD; Oct 17, 2022 at 12:15 PM.
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Old Oct 17, 2022, 12:10 PM
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Originally Posted by LV///R
OK - my memory sucks. ON my first run out - I had a nasty slide at the finish. We deal with a lot of loose gravel on this lot. I laid on the brakes too hard and this is probably what either did it or began the early stages of it. I DIDN'T check the front tires until I removed them for the day.

I do remember that turning left to right - there was a weird dead spot - which was probably the cording/missing rubber....

Video of 1st run:
https://www.youtube.com/watch?v=Y9LpsUDMbAo
not sure how noisy your brakes are on the street but if youre interested in quieting it down, can you try to put lithium grease on anything that touches the spring...pins and under the spring. not sure what is working for me but the squeal definitely disappeared, especially when i got some brake dust on there
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Old Oct 17, 2022, 02:26 PM
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Originally Posted by ViciousLSD
ha just want to show you my hack job
If it works it isnt silly haha! I saw guys chopping up a mop bucket once to use as an air intake track side to try help cool a motor.
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Old Oct 18, 2022, 07:46 AM
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Cut a plastic 3-foot level in half to use as a bumper brace when I trashed the undertray clips before lol.
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Old Oct 18, 2022, 08:18 AM
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Originally Posted by Balrok
Cut a plastic 3-foot level in half to use as a bumper brace when I trashed the undertray clips before lol.
thats a good idea. I need something to shove the bumper chin forward to reduce the gap under the headlight
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Old Oct 26, 2022, 06:33 AM
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Can anyone chime in on the use of Delrin for bushings on the evo? More specifically, for the rear trailing arm?

A) Would there be any performance benefit over a poly trailing arm bushing?
B) If so - are there places that would custom make one?

Thanks!
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Old Oct 26, 2022, 07:47 AM
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Originally Posted by LV///R
Can anyone chime in on the use of Delrin for bushings on the evo? More specifically, for the rear trailing arm?

A) Would there be any performance benefit over a poly trailing arm bushing?
B) If so - are there places that would custom make one?

Thanks!
Yes, dont.

The rear trailing arm bushing needs to move rotationally (the axis of the bushing) and along the plane created by the pivot axis and ball joint pivot point. This is because whole upright assembly moves in an arc. You can/should only use delrin in a pivot that moves purely axially. Like the upper control arm would be an example of that.
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Old Oct 26, 2022, 07:59 AM
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Originally Posted by Dallas J
Yes, dont.

The rear trailing arm bushing needs to move rotationally (the axis of the bushing) and along the plane created by the pivot axis and ball joint pivot point. This is because whole upright assembly moves in an arc. You can/should only use delrin in a pivot that moves purely axially. Like the upper control arm would be an example of that.
Perfect - thanks for the clarification!

So poly - only - is the way to go for us in STU for that rear trailing arm then?

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Old Oct 26, 2022, 08:52 AM
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Originally Posted by LV///R
Perfect - thanks for the clarification!

So poly - only - is the way to go for us in STU for that rear trailing arm then?
Yep. You could hypothetically do a spherical, but I feel thats a spot that is very low need for it. Its small angle movement with its length of the suspension travel range. I run poly there too and in all the SSB trailing arms.
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