C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Del-A-Lum Upper Control Arm Bushing Install w/ Photos

Old 11-07-2009, 09:57 PM
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95BLKVette
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Default Del-A-Lum Upper Control Arm Bushing Install w/ Photos

There are not too many posts of this so I thought I'd oblige

I performed the assembly and put them in the car today

Fitting up the inside bushings...there are an assortment of three different pairs of inside plastic bushings that you mix to get a snug fit. Note the steel washers are on the outside to check fitup.


This is a shot to show the difference in the interior bushing thickness supplied.


I cut off the ends of the old control arm shaft that was damaged and used it as a pressing tool to press in the small bushing...see the next photo.


You press in the small end bushing first. I lightly greased the inside of the arm and the exterior of the blue aluminum bushing prior to pressing the bushings in. This is the set up ready to press the small bushing in.


Prior to installing the large bushing, the inner steel and plastic washers must be greased and installed on the new control arm shaft. The steel washers go on the inside and the plastic against the pressed in bushing in the arm. This is the set up ready to press in the large end bushing. Note the SS flat bar adjacent the shaft that is used to prevent the control arm from being compressed.


This is the assembled arm just waiting for the outer washers, nuts and grease fittings. Note how the threaded holes for the grease fittings are oriented to be upright when the arms are installed in the car.


I'll post some additional photos of the assembled arms in the car when I get a chance.
Old 11-07-2009, 10:07 PM
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slickfx3
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Thanks for the pics, how does it handle?
Old 11-07-2009, 10:16 PM
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95BLKVette
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Haven't taken it down from my lift yet

I also have to weld up a new support hanger for one of my mufflers

Will drive it tomorrow
Old 11-08-2009, 04:12 AM
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mnstrlt1
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wow, this is great! Who was the supplier for te del-a-lum? Great alternative to the previous nightmare.

You got to fill us in on the feel after install as well!
Old 11-08-2009, 05:28 AM
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Originally Posted by mnstrlt1
wow, this is great! Who was the supplier for te del-a-lum? Great alternative to the previous nightmare.

You got to fill us in on the feel after install as well!


I want to rebush mine at some point. Sure don't want a mess like you had!
Old 11-08-2009, 08:28 AM
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Looks like a sweet install, but I'm guessing you'll have a harsher ride. I'll stay tuned
Old 11-08-2009, 08:25 PM
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95BLKVette
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I'll be doing my 92 mile round trip to Manhattan tomorrow morning....will post the results tomorrow.

Should just be nice and crisp again

Remember, I still have the urethanes on the lowers
Old 11-08-2009, 09:41 PM
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I have these as well. They're made by Global West. Not sure of the cost these days, used to be around $300 total for the uppers & lowers.

Handling is much improved, as is feel. When I did mine, I also did poly for the sway bars, and a few other things. On a road course, the feel was night and day. The ride is a more harsh but not unreasonable and frankly it never bothered me.







Old 11-09-2009, 09:22 AM
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Nice to hear, I bought a set for mine and will be installing them over the winter.
Old 11-09-2009, 08:28 PM
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Drove like a dream

No harshness that I can tell, but it handles very well.

Directional changes are virtually instantaneous, and I have urethanes everywhere else

I purchased my uppers direct from Globalwestperformance.com this is a copy of the actual order:

1984-96 Corvette Front GWS-1059 1 154.99
upper arm Del-a-lum
bushings
Subtotal 154.99
Shipping 25.22 (3 day UPS Saver)
Tax 0.00
Total 180.21
Old 11-09-2009, 10:45 PM
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Very nice! I have heard good things about these and will be installing them on mine soon.

96GS#007, I notice the lowers appear to have a hole for a grease fitting that is not in the control arm? Did you have to drill for one?
Old 11-09-2009, 10:56 PM
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cool
Old 11-10-2009, 01:55 AM
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Originally Posted by Kubs
Very nice! I have heard good things about these and will be installing them on mine soon.

96GS#007, I notice the lowers appear to have a hole for a grease fitting that is not in the control arm? Did you have to drill for one?
Old 11-10-2009, 12:14 PM
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Originally Posted by 96GS#007
I like the idea of a grease zirk in there. WIsh we could do it for all ploy bushing areas in our suspension.
Old 11-10-2009, 12:19 PM
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Originally Posted by 96GS#007
Does the hole in the LCA have to line up perfect with the one in the bushing or does the grease fitting not go that far and the grease just has to be able to get into the bushing?
Old 11-10-2009, 12:24 PM
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Originally Posted by Kubs
Does the hole in the LCA have to line up perfect with the one in the bushing or does the grease fitting not go that far and the grease just has to be able to get into the bushing?
I've had them for many years and don't remember. I'm sure the guys at Global West could answer.
Old 11-10-2009, 05:59 PM
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To Del-A-Lum Upper Control Arm Bushing Install w/ Photos

Old 11-10-2009, 08:35 PM
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Originally Posted by Kubs
Does the hole in the LCA have to line up perfect with the one in the bushing or does the grease fitting not go that far and the grease just has to be able to get into the bushing?
You must drill a hole in the center of the control arm and then line up the bushing so when it is pressed in it aligns with the hole in the center of the lower control arm bushing

Look at this link to see a photo of the the bushing kit:

http://ep.yimg.com/ca/I/yhst-5787474..._2076_19573410

Last edited by 95BLKVette; 11-10-2009 at 08:42 PM.
Old 11-28-2009, 09:41 AM
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Al a couple questions. I just installed a set, yesterday, uppers only so far.

1. Did you install the Derlin bearings AFTER installing the Al. bushings?

2. How stiff was the fit. I can barely move my upper arm? Haven't fully greased them via the fittings, but the stiction is fierce and I expected the opposite?

TJM
Old 11-28-2009, 10:51 AM
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I manually greased the delrin inserts and installed them prior to pressing in the aluminum replacement bushing inserts.

It is very important to also inert a support beteen the arms (see my photo of temporary strut installed between arms) prior to doing the second insert install or you will spring the A arm and cause a permanent misalignment which can cause binding.

Prior to torquing the end nuts to 10 ft-lbs, I made sure everything was well greased. I then worked the arms up and down to loosen them up and get the grease flowing, then retorqued the arms and then drilled the holes for the cotter pin install.

After installing the cotter pins, the arms did have some resistance, but basically were pretty readily moved up and down without excessive force.

Hope this helps.

BTW, just checked how they look in the car and they are a thing of beauty....some of the best $'s I've spent

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