Anyone have a poly/spherical pro/con write-up?

stanglifemike

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As the title says. I am about to buy a BMR adjustable UCA and cant decide on poly or spherical. I have BMR boxed non-adjustable LCAs with poly. I need to adjust my pinion angle so I need adjustable. Big thanks if anyone has some good info comparing the two.
 

Born To Run

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Adjustible UCA

As the title says. I am about to buy a BMR adjustable UCA and cant decide on poly or spherical. I have BMR boxed non-adjustable LCAs with poly. I need to adjust my pinion angle so I need adjustable. Big thanks if anyone has some good info comparing the two.

Go with the spherical,i destroyed the poly bushing in my steeda UCA twice in one year,just ripped them in half.I now have the Steeda spherical UCA,it has lasted all year with no problem (209 passes).
 

Kaldar142

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Rod ended control arms will be very noisey. I personally don't mind it but some people hate it.

With that being said, the performance of rod ended control arms is unmatched as they have zero flex and a bind free operation.
 

stanglifemike

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OK, thanks guys. Spherical it is.
Is it extremely noisy? Is the vibratoin felt? Noise shouldnt be much of an issue as I have an o/r H and FRPP Stingers, also the Shaker 1000. I have poly LCAs and about to order Prothane motor mounts
 

stanglifemike

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Also, have you guys installed the BMR Dual Duramoter Rearend Bushing? I heard the factory bushing is a PITA to get out. Do you need to drop the rearend out of the car to get the factory bushing out?
 

ChevyKiller

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What is your power levels and how is your 60's?

I ask because until I went over 500 rwhp and my 60's broke in the 1.5's and below, I didn't have any issues with the poly bushings. After, I broke them quicker than a mexican to home depot and went spherical and never had an issue again (even at 1.3x 60's)

If your car is just a daily driver and making moderate power - you'd have no issues with the poly IMO.
 

DRock

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i have poly/rod end BMR LCA's and they added a little noise but nothing major (turn on the radio or roll down the windows and its gone) my car is a dd and no complaints. Does any one know how noisey and upper control arm rod end is? Like is it really noticable?

BTW Mike has a vortech supercharger i believe.............
 

deathstang

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I got the UPR spherical adjustable UCA and it clunks all day long, rather annoying simply for the fact I didn't realize it was going to be that bad. On the flip side it launches like no other. Power to the wheel fast.
 

Chris06GT

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I am going with the spherical/poly combo lower's from BMR.....

I am not basing it off of how much power I have, because I am n/a.....I base it off of my driving style....
 

GIG4FUN

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I would go poly/rod.

i have poly/rod end BMR LCA's and they added a little noise but nothing major (turn on the radio or roll down the windows and its gone) my car is a dd and no complaints. Does any one know how noisey and upper control arm rod end is? Like is it really noticable?

BTW Mike has a vortech supercharger i believe.............

I am going with the spherical/poly combo lower's from BMR.....

I am not basing it off of how much power I have, because I am n/a.....I base it off of my driving style....


I have poly/spherical and I don't think they make that much noise.
 
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