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Old 09-15-2019, 11:05 PM   #1
tlamb2
 
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Alignment after Subframe bushings installed

So I did the Pegasus cradle bushings last weekend and the rear end was all over the place. So I went to Accurate Alignment in Oceanside Ca, They are the only spot I could find in SoCal that would time the bushings also. And they did not disappoint what a top-notch business James the owner dialed in the alignment and now it launches straight as an arrow. This is one shop you can trust to do quality work and the owner James knows his shit and is gonna do a cam swap next on my car. I so happy to find a quality alignment shop cause most dont know what they are doing. :thum bup:
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Old 09-23-2019, 04:10 PM   #2
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I thought you didn't need to do an alignment after doing subframe bushings? Nothing suspension wise should change while doing subframe bushings
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Old 09-23-2019, 04:45 PM   #3
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I thought you didn't need to do an alignment after doing subframe bushings? Nothing suspension wise should change while doing subframe bushings

It depends on the car. Some cars have a self aligning feature for the subframe itself. Not all vehicles have this, i don't know if the Camaro does or not. Cars that don't have that feature, can have the subframe shifted around a bit throwing alignment angles off. Not sure if you can do the subframe mounts one at a time or not, but that would alleviate any alignment issues if it could be done that way.
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Old 09-24-2019, 02:59 PM   #4
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Yes my Thrust was out 4 he said. All I know is after installing the solid cradle bushings my car was all over the place when hammered it. After alignment it launches straight and hard now.
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Old 09-24-2019, 04:24 PM   #5
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Originally Posted by G8One2 View Post
It depends on the car. Some cars have a self aligning feature for the subframe itself. Not all vehicles have this, i don't know if the Camaro does or not. Cars that don't have that feature, can have the subframe shifted around a bit throwing alignment angles off. Not sure if you can do the subframe mounts one at a time or not, but that would alleviate any alignment issues if it could be done that way.

The rear subframes on 5th Gen Camaro's do have locating dowels to help re-align it for installation. Typically the car does not need an alignment after doing a subframe bushing kit, but it is always a good idea to have the alignment checked after doing any chassis or suspension work.

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Old 09-24-2019, 04:59 PM   #6
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The rear subframes on 5th Gen Camaro's do have locating dowels to help re-align it for installation. Typically the car does not need an alignment after doing a subframe bushing kit, but it is always a good idea to have the alignment checked after doing any chassis or suspension work.

Best Regards,
Stephen

That's good information. Thanks for chiming in on that.
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Old 09-25-2019, 10:14 AM   #7
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That's good information. Thanks for chiming in on that.
It's no problem at all. We are always glad to help.


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Old 09-25-2019, 10:42 AM   #8
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You are not guaranteed that the squishy factory cradle bushings and the new cradle bushings are going to place the cradle under the car in the exact same spot. There is also a little "play" or movement in the cradle even when it's on the alignment dowels. I would say an alignment is mandatory after a bushing swap. It may need to be adjusted and it may not. The only way to know is to check it.
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Old 12-18-2019, 11:56 PM   #9
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They are the only spot I could find in SoCal that would time the bushings also.
Most of the rear suspension bolts, including the sub rake bolts, are torque to yield. Unless you came to the alignment shop with a bucket of new bolts to install, all those existing bolts are trash. Iíll be installing new the Pegasus bushings and z/28 control arms as soon as I can find the time. I have all new bolts and will be timing everything myself before going to the alignment shop.
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Old 12-19-2019, 08:40 AM   #10
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A lot depends on the amount of disassembly that was done to do the bushings.
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Old 12-19-2019, 08:27 PM   #11
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Most of the rear suspension bolts, including the sub rake bolts, are torque to yield. Unless you came to the alignment shop with a bucket of new bolts to install, all those existing bolts are trash. Iíll be installing new the Pegasus bushings and z/28 control arms as soon as I can find the time. I have all new bolts and will be timing everything myself before going to the alignment shop.
Pegasus went out of business months back. I am glad I was able to get their cradle bushings before they folded. I got them through JDP Motorsports
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Old 12-22-2019, 11:04 PM   #12
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Alignment after Subframe bushings installed

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Originally Posted by Chris49066SS View Post
Pegasus went out of business months back. I am glad I was able to get their cradle bushings before they folded. I got them through JDP Motorsports

I bought one of the last sets phasetek had in stock. Been sitting on them for months now trying to find the time to install them.
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Old 12-23-2019, 01:07 AM   #13
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You would need to align the rear if you did not properly align the sub-frame when
reinstalled. The arms are attached to the whole thing, so there is no need to
actually re-align them. What happens, is toe and thrust angle are based on
the aging of the parts. So, when you installed new bushings, the skew or yeah,
Thrust Angle will be different. If it was off, then you needed to be sure the the
subframe was straight, or at the same position as the old one, using evidence marks
where the bolts and washers were.

Even with dowel pin alignments, the holes can wear oval, the pins can bend.
So, using evidence marks is the best way to be sure it's on in the same position
it was when you removed it. If not, no biggie, you're just paying for an alignment.

As with all the other alignments, it's either negative or positive, so it was
+4 or -4.
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Old 12-23-2019, 09:53 AM   #14
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I bought one of the last sets phasetek had in stock. Been sitting on them for months now trying to find the time to install them.
Good deal. They are a nice mod to do, and easy!
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