Hop stop question

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Hop stop question

Postby gt350fme » Mon Jun 04, 2012 9:49 pm

This question is regarding the 2 inch relocation of the rear UCA bracket hole.

Where in the rear suspenion travel, do you base the newly located UCA bracket hole?
Stock Ride hight?
on the bump stops?
half way inbetween

Any info would be apreciated.
1964 Chevy K20 Panel
1973 GT Vega Hatchback
1984 944 porsche
1992 Lexus SC 400
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Re: Hop stop question

Postby speedphreake » Tue Jun 05, 2012 7:04 am

The new hole would be 2" above the stock mounting hole on the upper control arm mount on the rearend itself.
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Re: Hop stop question

Postby gt350fme » Tue Jun 05, 2012 12:00 pm

Perhaps a picture will help explane.
I set this up at near ride hight and now the bump stops colide with the UCA flange at the body, I can change the bumpstop lacation but feel this is just guessing.
The car craft artical on this that is posted in another post is unreadable to me.
Attachments
stop hop mod 022 1.JPG
stop hop mod 022 1.JPG (154.08 KiB) Viewed 1188 times
1964 Chevy K20 Panel
1973 GT Vega Hatchback
1984 944 porsche
1992 Lexus SC 400
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Re: Hop stop question

Postby speedphreake » Tue Jun 05, 2012 6:53 pm

I'm not sure I know what you mean, I don't see the bump stop in the pic. I don't even have the bump stops on my car any more.
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Re: Hop stop question

Postby gt350fme » Tue Jun 05, 2012 7:08 pm

Maybe I just need to relocate the bumpstops or eleminate them.
1964 Chevy K20 Panel
1973 GT Vega Hatchback
1984 944 porsche
1992 Lexus SC 400
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Re: Hop stop question

Postby gt350fme » Tue Jun 05, 2012 7:19 pm

What I am trying to say in the pic is that if the new hole location is a bit forward or back, there will changes in how the axel moves in its travel, a bit foward and maybe things will clearance better.
1964 Chevy K20 Panel
1973 GT Vega Hatchback
1984 944 porsche
1992 Lexus SC 400
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Re: Hop stop question

Postby speedphreake » Tue Jun 05, 2012 7:24 pm

By moving that hole forward or back, you change pinion angle. That is more important than the bump stops. Once you have that right, then put the bump stops where they will work or get rid of them all together. Here is the only pic I have right now of my rear setup.

download/file.php?id=9532
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Re: Hop stop question

Postby 73 307 GT » Tue Jun 05, 2012 7:34 pm

gt350fme wrote:The car craft artical on this that is posted in another post is unreadable to me.

Here, try this. :th:
Image
Image
Image
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Re: Hop stop question

Postby cosvega76 » Wed Jun 06, 2012 8:40 am

I made my risers out of 2"x2" square tubing:

Rear UCA 2.jpg
Rear UCA 2.jpg (65.16 KiB) Viewed 1125 times


And made my own upper control arms out of tubing and rod ends:

Rear UCA 1.jpg
Rear UCA 1.jpg (40.8 KiB) Viewed 1125 times


That way I can adjust pinion angle.


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Re: Hop stop question

Postby monzaaddict » Wed Jun 06, 2012 10:31 am

if you have a 9" ford, the arms are already higher than stock due to shape of housing.
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Re: Hop stop question

Postby gt350fme » Wed Jun 06, 2012 12:23 pm

Thank you sooo much you guys, this has been very helpfull!

And the car craft artical is now readable, thank you!

Was also wondering if the 9 inch was somewhat taller.

cosvega76, your custom UCAs are stright not curved, guess the curve is not nessesary?

Looks like I will be moving my bump stops today.
1964 Chevy K20 Panel
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1992 Lexus SC 400
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Re: Hop stop question

Postby cosvega76 » Thu Jun 07, 2012 8:13 am

gt350fme wrote:cosvega76, your custom UCAs are stright not curved, guess the curve is not nessesary?


You only need the curved arm for the stock axle mounting location, as a straight arm would contact the axle tube when the suspension is in compression. Once you raise the rear attachment point, there is no more interference.

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Re: Hop stop question

Postby 283vega » Sat Jun 09, 2012 7:15 am

Hey Cosvega76
I noticed you dropped your sway bar mount.Enlighten us!!!
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Re: Hop stop question

Postby hammerdown7 » Sat Jun 09, 2012 8:01 am

283vega wrote:Hey Cosvega76
I noticed you dropped your sway bar mount.Enlighten us!!!


That's how the Addco bar mounts.

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Re: Hop stop question

Postby cosvega76 » Mon Jun 11, 2012 9:15 am

283vega wrote:Hey Cosvega76
I noticed you dropped your sway bar mount.Enlighten us!!!


As Dick mentioned, I have Addco bars on the car and that is their mounting system.

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