Currie Currectrac UCA's don't adjust short enough? - Chevelle Tech
Brakes, Suspension & Steering Conversion questions & more.

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post #1 of 29 (permalink) Old May 13th, 18, 9:20 PM Thread Starter
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Chris
 
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Currie Currectrac UCA's don't adjust short enough?

I installed my high quality and expensive Currectrac rear UCA's, but they don't seem to adjust short enough. This is as far as they go. I need a much short arm as I run no hop bars which have buggered my pinion angle. Anyone else run into this issue?


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post #2 of 29 (permalink) Old May 13th, 18, 11:25 PM
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Re: Currie Currectrac UCA's don't adjust short enough?

I havent used the Curries - but I have the UMI adjustable uppers with the roto ball ends and no-hops - with no issues of adjustability to set the angle.

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post #3 of 29 (permalink) Old May 13th, 18, 11:36 PM Thread Starter
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by OLDED View Post
I havent used the Curries - but I have the UMI adjustable uppers with the roto ball ends and no-hops - with no issues of adjustability to set the angle.
Do you know how short the UMI's will go? These Currectrac's only go 1.5 turns shorter than the stock arms.

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post #4 of 29 (permalink) Old May 13th, 18, 11:47 PM
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Re: Currie Currectrac UCA's don't adjust short enough?

I donít know what no-hops are, but those UCAs worked fine on my lowered 65.
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post #5 of 29 (permalink) Old May 14th, 18, 12:37 AM Thread Starter
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by MikeMalibu View Post
I donít know what no-hops are, but those UCAs worked fine on my lowered 65.
Raise the mounting point of the UCA


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post #6 of 29 (permalink) Old May 14th, 18, 10:00 AM
Ryan
 
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Re: Currie Currectrac UCA's don't adjust short enough?

The UMI uppers with Roto-joints go 3/4" shorter than stock, if you use a rod end upper control arm it will go up to 1" shorter.

I hope that helps
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post #7 of 29 (permalink) Old May 14th, 18, 5:54 PM Thread Starter
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by UMI Performance View Post
The UMI uppers with Roto-joints go 3/4" shorter than stock, if you use a rod end upper control arm it will go up to 1" shorter.

I hope that helps
what is a rod end UCA?

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post #8 of 29 (permalink) Old May 14th, 18, 7:01 PM Thread Starter
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Re: Currie Currectrac UCA's don't adjust short enough?

I talked to Currie and they are suggesting I grind down the ends to allow it to go shorter. Not too happy, but it is a solution.

The other idea I had was maybe trying to move the no hop bars more inward, and drilling a new hole in the diff ribbing. This would pivot the ears towards the front of the car. Who knows how much issues that could cause though.

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post #9 of 29 (permalink) Old May 15th, 18, 9:00 AM
Ryan
 
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by -SS454- View Post
what is a rod end UCA?
Like this, when we use a rod end it allows the arm to go shorter than a Roto-Joint because the diameter is smaller.

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post #10 of 29 (permalink) Old May 17th, 18, 1:45 PM
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by -SS454- View Post
I talked to Currie and they are suggesting I grind down the ends to allow it to go shorter. Not too happy, but it is a solution.

The other idea I had was maybe trying to move the no hop bars more inward, and drilling a new hole in the diff ribbing. This would pivot the ears towards the front of the car. Who knows how much issues that could cause though.
I see nothing wrong with shortening the ends a little to allow the arms to get shorter.

Andrew
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post #11 of 29 (permalink) Old May 17th, 18, 2:34 PM
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by -SS454- View Post
I talked to Currie and they are suggesting I grind down the ends to allow it to go shorter. Not too happy, but it is a solution.

The other idea I had was maybe trying to move the no hop bars more inward, and drilling a new hole in the diff ribbing. This would pivot the ears towards the front of the car. Who knows how much issues that could cause though.
Do you really need the no-hop bars, now that you have the adjustable control arms?
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post #12 of 29 (permalink) Old May 17th, 18, 4:43 PM
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by Clint44 View Post
Do you really need the no-hop bars, now that you have the adjustable control arms?
x2 just remove the no hop bars and adjust the driveline angles properly with the adjustable upper arms. isn't that why you bought them?
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post #13 of 29 (permalink) Old May 17th, 18, 7:16 PM
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by Clint44 View Post
Do you really need the no-hop bars, now that you have the adjustable control arms?
I'm assuming the no hop bars are there because the OP is trying to change the instant center of the suspension.

Just adding adjustable upper control arms doesn't change the instant center.

You either need the no hop bars that raise up the rear of the upper control arms or you need relocation brackets for the rear of the lower control arms to lower the rear of the lower control arms.

Either of those would move the instant center to somewhere more appropriate than the factory angles have it at.

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post #14 of 29 (permalink) Old May 18th, 18, 12:25 AM Thread Starter
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Re: Currie Currectrac UCA's don't adjust short enough?

The no hop bars were installed by the previous owner. I intend to keep them since they help with traction like Steve said. I bought the adjustable UCA's so I could fine tune my pinion angle in relation to my new transmission angle with my T56.

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post #15 of 29 (permalink) Old May 18th, 18, 12:31 AM
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Re: Currie Currectrac UCA's don't adjust short enough?

Quote:
Originally Posted by andrewb70 View Post
I see nothing wrong with shortening the ends a little to allow the arms to get shorter.

Andrew
this was recommended by manufacturer

should try it

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