solid welded rear subframe mounts. - TCCoA Forums
 
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post #1 of 17 (permalink) Old 01-18-2011, 02:08 PM Thread Starter
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solid welded rear subframe mounts.

Had a wild idea......see what yalls take on this is...

Okay, we all know the factory rubber bushings in the rear subframe are crap...

Well, I can't really afford DLF bushings back there, so I was thinking of welding the upper cup to the rear subframe(not the car), and the lower cups to the lower part of the subframe mount. On the lowers I would have to add a ring as the cup does not sit flush with the subframe, the rubber bushing keeps it off.

If the Delrin or UVMH(not sure of the letters) are very solid, then why not make it completely solid?
For someones car like mine which sees track use only, I don't see a problem with this.
I did the same exact thing on my tranny crossmember...made the rubber bushings into solid by welding cups to the inner race/sleeve, and the outer structure which holds the bushing in place.

Am I making any sense here?

I can take some pictures for those who may not follow what I'm trying to describe.

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post #2 of 17 (permalink) Old 01-18-2011, 03:00 PM
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I think it's a sh*tty fvcking idea and who ever thought of this should be shot on site, then hung with their own intestines, and then decapitated and finally eaten by a bear and then sh*t out of the bear in Alaska where this person will forever be a frozen peice of sh*t.

Just kidding.

It was my idea...
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post #3 of 17 (permalink) Old 01-18-2011, 03:06 PM
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I like the idea, personally I want those bushings solid, NVH be damned!

Yes get pics!

-Matt
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post #4 of 17 (permalink) Old 01-18-2011, 03:11 PM Thread Starter
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Quote:
Originally Posted by 96gts4.6L View Post
I think it's a sh*tty fvcking idea and who ever thought of this should be shot on site, then hung with their own intestines, and then decapitated and finally eaten by a bear and then sh*t out of the bear in Alaska where this person will forever be a frozen peice of sh*t.

Just kidding.

It was my idea...

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post #5 of 17 (permalink) Old 01-18-2011, 03:30 PM
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Little different

Hello

I had a little different idea.

I was cutting 3 1/2" steel circles. Was gonna weld them to the top of the
K mounts. Keep the the lower cups.

Never went anywhere with it.

Idea was; Solid mount & lower the body, ever so slightly.

Drilled one, then cooked the bit. they are like 25.00 each.
Looking at DLF's mounts. Want them But alas no cash! lol


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post #6 of 17 (permalink) Old 01-18-2011, 05:02 PM
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Ive read posts from SC owners using metal cups near the subframe isolators to simulate a solid mount IRS - supposively to eliminate "wheel hop" .. which worked according to the people who tried this, but at the expense of more vibrations.
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post #7 of 17 (permalink) Old 01-18-2011, 08:18 PM Thread Starter
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Originally Posted by SCTbird1994 View Post
Ive read posts from SC owners using metal cups near the subframe isolators to simulate a solid mount IRS - supposively to eliminate "wheel hop" .. which worked according to the people who tried this, but at the expense of more vibrations.
i figured there would be more noise and vibrations...but then again, my car will probably be very loud anyway.

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post #8 of 17 (permalink) Old 01-18-2011, 08:19 PM Thread Starter
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here are some pics of the upper portion. There isn't as much metal as I thought under the rubber...




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post #9 of 17 (permalink) Old 01-24-2011, 01:27 PM Thread Starter
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well..............gonna hold off for now on making these.
If I do it, I want to do it to a Mark 8 subframe.....

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post #10 of 17 (permalink) Old 01-24-2011, 02:21 PM
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It's the same subframe, come on!

-Matt
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post #11 of 17 (permalink) Old 01-24-2011, 02:42 PM
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Sub...

Hello

Yes, same rear K. The Lincoln has the Allu. lower arms & pumpkin.


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post #12 of 17 (permalink) Old 01-24-2011, 02:58 PM Thread Starter
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Quote:
Originally Posted by XR7-4.6 View Post
It's the same subframe, come on!
maybe i was thinkg of somethign else, but aren't the lower arms diffrent on how they mount?
I thought the mark 8 arms did not use the "limiter" like on our rear arms use?

Can't think of the names right now for the stuff.....lemme do some diging real quick...

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post #13 of 17 (permalink) Old 01-24-2011, 03:03 PM
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Nope, arms mount and function the same. You thinking of the toe compensator?

-Matt
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post #14 of 17 (permalink) Old 01-24-2011, 03:05 PM Thread Starter
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Nope, arms mount and function the same. You thinking of the toe compensator?
yeah, that it.... did the marks come with them?

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post #15 of 17 (permalink) Old 01-24-2011, 03:08 PM
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Yup

-Matt
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post #16 of 17 (permalink) Old 01-24-2011, 03:09 PM Thread Starter
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Yup
i guess they do......I have never really looked at them....until now.

I guess what I was seeing was some guys were removing these and installing DLF bushings in place of those?

Thanks Matt.

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post #17 of 17 (permalink) Old 04-10-2011, 06:11 PM
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The toe compensator is just another set of bushings to locate the rear wheel during acceleration.

DLF bushings or no, I would still run them. Esp for a drag car; you want it a strong there as possible. The more it moves,the more the rear wheels aren't pointed exactly the same direction.

They have large bushings and very little compliance; they might move 3/16".

Unlike the rest of the bushings.

If you make it solid, I'd make it stronger than the original stuff; since it won't be bending, it will break at that thickness.

I'll bet solid welds weigh less than 40lbs of rubber and steel...

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