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Old 07-01-2016, 05:01 PM   #1
hillshooter
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Pie cut Upper control arm

Hello guys and gals.

Anyone have any pictures of how to pie cut the UCA? Iv found acouple threads on here but the pictures no longer come up. I need to cut on my s10 UCA to relieve abit of the binding. Thanks
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Old 07-01-2016, 05:45 PM   #2
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Re: Pie cut Upper control arm

Well someone els probably has better illustration but the s10 control arms can be tricky to do because the way there shaped.

the Red area is of course the pie cut, the Blue line is where i bend it ( i sometimes score the blue line with a cut off wheel to allow it to bend easier)

The yellow section is where its tricky. i have just pie cut it all the way across and then weld it back up. or you could remove that section completely then add in a new flat plate when the control arm is bent

For off-road use only haha
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Old 07-01-2016, 06:33 PM   #3
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Re: Pie cut Upper control arm

nice picture kylie. its 20% as big as the background. everyone welcome kyle.
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Old 07-02-2016, 05:46 AM   #4
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Re: Pie cut Upper control arm

Thanks for the picture, gives me a better idea of what im dealing with. Is there any kind of measurements?
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Old 07-02-2016, 10:56 AM   #5
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Re: Pie cut Upper control arm

I am fascinated by how much work has to go into these frame "swaps," just modify the stock frame and suspension it's much easier!

Brian
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Old 07-02-2016, 11:20 AM   #6
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Re: Pie cut Upper control arm

Quote:
Originally Posted by MARTINSR View Post
I am fascinated by how much work has to go into these frame "swaps," just modify the stock frame and suspension it's much easier!

Brian
well, this has nothing to do with swapping frames. this is about bagging it on big wheels and not buying tubular arms to correct the balljoint angles. you cant bag a stock suspension very successfully, unless you raise the motor or clearance the oil pan.

so fair warning, in the future when someone asks how to clearance the oil pan to bag a stock frame and suspension, I will probably post something like "I am fascinated by how much work has to go into keeping the stock frame and suspension, just install an IFS or s10 swap its much easier!"

the easy way to pie cut is to leave it all together, pie cut it like kyle shows above, and lay the truck out. the weight of the truck will pull the pie cut together, you can weld it all up at that point. or just buy some tubular control arms, because its just as likely that the upper arm/balljoint isnt binding but the lower arm is bottoming out on the frame. tube arms fix all of this, that goes for a mustangII, camaro swap, G-body swap, and s10 swap.
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Old 07-02-2016, 11:22 AM   #7
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Re: Pie cut Upper control arm

[QUOTE=MARTINSR;7641555]I am fascinated by how much work has to go into these frame "swaps," just modify the stock frame and suspension it's much easier!

Brian[ This is on the stock frame with a Danforth IFS.
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Old 07-02-2016, 11:42 AM   #8
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Re: Pie cut Upper control arm

coach in the project threads has installed a danforth, I dont remember if he pie cut his uppers but its worth a read.

http://67-72chevytrucks.com/vboard/s...d.php?t=554051


edit: he did! starting about the middle of this page

http://67-72chevytrucks.com/vboard/s...554051&page=38
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Last edited by joedoh; 07-02-2016 at 11:52 AM.
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Old 07-02-2016, 04:02 PM   #9
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Re: Pie cut Upper control arm

[quote=hillshooter;7641577]
Quote:
Originally Posted by MARTINSR View Post
I am fascinated by how much work has to go into these frame "swaps," just modify the stock frame and suspension it's much easier!

Brian[ This is on the stock frame with a Danforth IFS.
Ahhhhh

You can see my distaste for the frame swaps slither through. Thanks for putting up with me.

Brian
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Old 07-02-2016, 04:03 PM   #10
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Re: Pie cut Upper control arm

Quote:
Originally Posted by joedoh View Post
well, this has nothing to do with swapping frames. this is about bagging it on big wheels and not buying tubular arms to correct the balljoint angles. you cant bag a stock suspension very successfully, unless you raise the motor or clearance the oil pan.

so fair warning, in the future when someone asks how to clearance the oil pan to bag a stock frame and suspension, I will probably post something like "I am fascinated by how much work has to go into keeping the stock frame and suspension, just install an IFS or s10 swap its much easier!"

the easy way to pie cut is to leave it all together, pie cut it like kyle shows above, and lay the truck out. the weight of the truck will pull the pie cut together, you can weld it all up at that point. or just buy some tubular control arms, because its just as likely that the upper arm/balljoint isnt binding but the lower arm is bottoming out on the frame. tube arms fix all of this, that goes for a mustangII, camaro swap, G-body swap, and s10 swap.
I got off the fashion train quite a while ago.

Brian
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Old 07-05-2016, 11:22 AM   #11
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Re: Pie cut Upper control arm

Super easy.

I had my truck chassis on jack stands and used a 4-1/2" skinny wheel to make the cuts. Then lay the truck out. I ended up raising it up again and removing some more material.

Once layed out and enough material has been removed......tack them good. The pull them off and final weld.

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Old 07-05-2016, 11:38 AM   #12
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Re: Pie cut Upper control arm

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Old 07-05-2016, 11:29 PM   #13
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Re: Pie cut Upper control arm

Not sure if you know but Michigan Metal Works sells s10 uppers for $150. I'd personally be too worried about cutting my control arms



http://michiganmetalworks.com/store/...&product_id=71
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Old 07-06-2016, 09:53 AM   #14
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Re: Pie cut Upper control arm

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Not sure if you know but Michigan Metal Works sells s10 uppers for $150. I'd personally be too worried about cutting my control arms



http://michiganmetalworks.com/store/...&product_id=71
Michigan Metal Works stuff is pretty much junk. A quick Google search shows that there quality and engineering is suspect!!
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Old 07-06-2016, 10:30 AM   #15
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Re: Pie cut Upper control arm

Quote:
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Michigan Metal Works stuff is pretty much junk. A quick Google search shows that there quality and engineering is suspect!!
Wow, I thought their stuff was good. Thanks for letting me know. Good luck with your project
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Old 07-06-2016, 12:02 PM   #16
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Re: Pie cut Upper control arm

Quote:
Originally Posted by Coach529 View Post
Michigan Metal Works stuff is pretty much junk. A quick Google search shows that there quality and engineering is suspect!!
Really?
I did a quick Google search and only found two threads.
I've never had any of the MMW a-arms,... But I've seen quite a few trucks built with them.
They make a-arms and custom spindles from many vehicles that no one else bothered to address.
What were the exact problems?
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Old 07-06-2016, 12:20 PM   #17
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Re: Pie cut Upper control arm

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Really?
I did a quick Google search and only found two threads.
I've never had any of the MMW a-arms,... But I've seen quite a few trucks built with them.
They make a-arms and custom spindles from many vehicles that no one else bothered to address.
What were the exact problems?
Poor welds, poor (or no) engineering.

There is a reason they are the only company out there build control arms out of flat plate.
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Old 07-07-2016, 12:56 PM   #18
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Re: Pie cut Upper control arm

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Poor welds, poor (or no) engineering.

There is a reason they are the only company out there build control arms out of flat plate.
Thanks for the info Coach. I also tagged ya over on my FB 150 build page. What transmission drop do you have on your crossmember?
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Old 07-07-2016, 01:22 PM   #19
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Re: Pie cut Upper control arm

I always thought the flat plate looked goofy for control arms. You need to be grooving and stacking up your welds or welding really hot to get the necessary penetration on that thick of plate.

I was considering them in the future because they're the only one that make stretched control arms specific for an AD on an S10 chassis. However, I don't want to be putting my life in the hands of someone who doesn't FEA and follow engineered weld procedures and QA/QC for a product like this.
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Old 07-07-2016, 02:24 PM   #20
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Re: Pie cut Upper control arm

Michigan Metal Works also builds tubular a-arms.
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