umi suspension
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From: So Cal
Car: 87 IROC-Z
Engine: LsX
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umi suspension
im looking into replacing my oem wonderbar for a umi brand one
would that be a good upgrade?
i am also looking into the umi stb. and SFCs
i thought theyre good quality and affordable
any suggestions?
would that be a good upgrade?
i am also looking into the umi stb. and SFCs
i thought theyre good quality and affordable
any suggestions?
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: umi suspension
im not really sure if there is much benefit in a aftermarket wonder bar to replace a stock one, they both work just fine. Unless you go with a adjustable one for some preload on the front end.
As much as i like UMI products, im not in love with their STB at all. Im sure it works, but it can be better, and i dont like how it mounts.
As much as i like UMI products, im not in love with their STB at all. Im sure it works, but it can be better, and i dont like how it mounts.
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Car: 87 IROC-Z
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Transmission: MN12 6speed
Axle/Gears: 3:42
Re: umi suspension
im not really sure if there is much benefit in a aftermarket wonder bar to replace a stock one, they both work just fine. Unless you go with a adjustable one for some preload on the front end.
As much as i like UMI products, im not in love with their STB at all. Im sure it works, but it can be better, and i dont like how it mounts.
As much as i like UMI products, im not in love with their STB at all. Im sure it works, but it can be better, and i dont like how it mounts.
reasonable enough. i noticed how they mount on top of the strut mounts..
i saw someone re do the mounting plates on there.
Joined: Aug 2006
Posts: 12,805
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: umi suspension
also, the strut mount bolts are rather small, and to put lateral load on them like this, to me, seems to be a bad idea. What if they shear the bolts? that will make a mess quick
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: umi suspension
i just dont like the idea of having to remove the bar for alignments. Yeah, you dont do them every day, but it just irritates me.
also, the strut mount bolts are rather small, and to put lateral load on them like this, to me, seems to be a bad idea. What if they shear the bolts? that will make a mess quick
also, the strut mount bolts are rather small, and to put lateral load on them like this, to me, seems to be a bad idea. What if they shear the bolts? that will make a mess quick
The mounts are slotted just like the 6 strut mount bolts, so I don't see why the STB would need to be removed .
And the UMI STB uses 4 (2 on each side) of the strut mounts, so if they are strong enough for the strut, why would they be too weak for the STB? And 2 more bolts can be added, if someone wanted to, since there is an extra hole in the STB mount for them to be added.
Last edited by Stephen; Jul 15, 2010 at 06:32 PM.
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From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: umi suspension
2 things about the UMI STB....
The mounts are slotted just like the 6 strut mount bolts, so I don't see why the STB would need to be removed .
And the UMI STB uses 4 (2 on each side) of the strut mounts, so if they are strong enough for the strut, why would they be too weak for the STB? And 2 more bolts can be added, if someone wanted to, since there is an extra hole in the STB mount for them to be added.
The mounts are slotted just like the 6 strut mount bolts, so I don't see why the STB would need to be removed .
And the UMI STB uses 4 (2 on each side) of the strut mounts, so if they are strong enough for the strut, why would they be too weak for the STB? And 2 more bolts can be added, if someone wanted to, since there is an extra hole in the STB mount for them to be added.
original

vs
new and improved.

got these off another thread.
the second design would be alot easier to work with
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: umi suspension
2 things about the UMI STB....
The mounts are slotted just like the strut mounts, so I don't see why the STB would need to be removed .
And the UMI STB uses 4 (2 on each side) of the strut mounts, so if they are strong enough for the strut, why would they be too weak for the STB? And 2 more bolts can be added, if someone wanted to, since there is an extra hole in the STB mount for them to be added.
The mounts are slotted just like the strut mounts, so I don't see why the STB would need to be removed .
And the UMI STB uses 4 (2 on each side) of the strut mounts, so if they are strong enough for the strut, why would they be too weak for the STB? And 2 more bolts can be added, if someone wanted to, since there is an extra hole in the STB mount for them to be added.
you can add the extra 2 bolts, but when you change the alignment, you are left with holes in the strut tower and have to drill more.
Just my personal opinion of it, i dont like it. I feel the stb should be rigid mounted, and mounted independent of the strut mount. as for the bolts shearing, i dont know that its likely, but i would rather not take the chance. Maybe im paranoid,
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Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
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iTrader: (12)
Joined: Jul 1999
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: umi suspension
That new tiny mount pic looks pretty useless. Not much footing or surface area to spread the load out. Looks like it could easily flex the strut tower sheetmetal, since the load isn't spread out very much.
you are correct with the slotted holes, was thinking about it wrong. i assume they are slotted side to side? right?
you can add the extra 2 bolts, but when you change the alignment, you are left with holes in the strut tower and have to drill more.
Just my personal opinion of it, i dont like it. I feel the stb should be rigid mounted, and mounted independent of the strut mount. as for the bolts shearing, i dont know that its likely, but i would rather not take the chance. Maybe im paranoid,
you can add the extra 2 bolts, but when you change the alignment, you are left with holes in the strut tower and have to drill more.
Just my personal opinion of it, i dont like it. I feel the stb should be rigid mounted, and mounted independent of the strut mount. as for the bolts shearing, i dont know that its likely, but i would rather not take the chance. Maybe im paranoid,

You wouldn't hafta drill new holes after an alignment.....The STB mounts will stay exactly were they were. Loosen the 2 nuts of the strut mounts like normal for an alignment change & the strut mounts would slide back or forth under them. Tighten the strut mount nuts back up & your done. No need to ever touch the 2 bolts in the extra holes of the STB mount or drill new holes for the 2 extra bolts. I actually have never bothered to put those in. I'm just using the strut mounts nuts to hold mine on.
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: umi suspension
You wouldn't hafta drill new holes after an alignment.....The STB mounts will stay exactly were they were. Loosen the 2 nuts of the strut mounts like normal for an alignment change & the strut mounts would slide back or forth under them. Tighten the strut mount nuts back up & your done. No need to ever touch the 2 bolts in the extra holes of the STB mount or drill new holes for the 2 extra bolts. I actually have never bothered to put those in. I'm just using the strut mounts nuts to hold mine on.
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: umi suspension
when i made mine, i tried to keep the mounts as large as possible without interfering with the strut mount. Its shape mirrors the contours of the mount, so it fits snugly together when at the max adjustments
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: umi suspension
Does the strut mount move forward & backwards, for alignment changes? If it does, how do the strut mounts handle that, since they only have slotted holes for left/right movement?
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Car: 87 IROC-Z
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Transmission: MN12 6speed
Axle/Gears: 3:42
Re: umi suspension
besides umi stb what else is there? i think the design will be much better if the stb had individual mounting bolts.
ex. taking off my intake i wouldn't want to risk any possibility to move my alignment because i had to remove the 4 bolts. there might be few times where i will have to remove the stb. an independent mounting bracket would be much easier imo .
umi sfc look pretty good as well . bolt on to the rear lca location and welded on in the front section.
ex. taking off my intake i wouldn't want to risk any possibility to move my alignment because i had to remove the 4 bolts. there might be few times where i will have to remove the stb. an independent mounting bracket would be much easier imo .
umi sfc look pretty good as well . bolt on to the rear lca location and welded on in the front section.
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iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: umi suspension
besides umi stb what else is there? i think the design will be much better if the stb had individual mounting bolts.
ex. taking off my intake i wouldn't want to risk any possibility to move my alignment because i had to remove the 4 bolts. there might be few times where i will have to remove the stb. an independent mounting bracket would be much easier imo .
umi sfc look pretty good as well . bolt on to the rear lca location and welded on in the front section.
ex. taking off my intake i wouldn't want to risk any possibility to move my alignment because i had to remove the 4 bolts. there might be few times where i will have to remove the stb. an independent mounting bracket would be much easier imo .
umi sfc look pretty good as well . bolt on to the rear lca location and welded on in the front section.
Thread Starter
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From: So Cal
Car: 87 IROC-Z
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Transmission: MN12 6speed
Axle/Gears: 3:42
Re: umi suspension
when alignment tweakin comes around. is it easy to move the strut mounts around?
Joined: Aug 2006
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: umi suspension
you can kinda see it in this pic
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: umi suspension
Of course, you don't pull the nuts completely off to do an alignment. You just loosen them, then use a soft mallet to tap them to where you need to, to adjust the alignment.
Ah.....Never seen the strut mounts off & seen the mount holes (or slots apparently).
Re: umi suspension
When we designed the STB our goal was a bolt on item since some customers aren't keen on drilling holes in there car. Now we do include an optional bolt which we recommend to install but it requires drilling, it helps hold the brace in place better. As for drilling the hole, the mounts feature slots so you shouldn't have to drill any more holes once the two are drilled. Everyone is going to have a different option on an item like this and we understand this, we have had good luck with this design so far 
As for the wonder bar, yes ours is much larger than the factory one. It is built from 1.250" DOM tubing with 3/16" machined mounting points.
If I can help anymore please ask. Thank you!
Ryan

As for the wonder bar, yes ours is much larger than the factory one. It is built from 1.250" DOM tubing with 3/16" machined mounting points.
If I can help anymore please ask. Thank you!
Ryan
Joined: Oct 2006
Posts: 3,041
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From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: umi suspension
Oh yea...your car is my screen saver....one day....one day.
When we designed the STB our goal was a bolt on item since some customers aren't keen on drilling holes in there car. Now we do include an optional bolt which we recommend to install but it requires drilling, it helps hold the brace in place better. As for drilling the hole, the mounts feature slots so you shouldn't have to drill any more holes once the two are drilled. Everyone is going to have a different option on an item like this and we understand this, we have had good luck with this design so far 
As for the wonder bar, yes ours is much larger than the factory one. It is built from 1.250" DOM tubing with 3/16" machined mounting points.
If I can help anymore please ask. Thank you!
Ryan

As for the wonder bar, yes ours is much larger than the factory one. It is built from 1.250" DOM tubing with 3/16" machined mounting points.
If I can help anymore please ask. Thank you!
Ryan
Thread Starter
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From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: umi suspension
lol thanks. any pictures of the sfc? and wonderbar installed on the car. im wondering how it will clear my exhaust routing.
Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: umi suspension
As my car has dual cats, I had to move the cats over about 1.5" to clear the sfc. Not a big deal. On a single cat car it's not an issue. I run a 3" Flowmaster exhaust.
Re: umi suspension
Thanks for your interest in UMI Performance. Below is a link to show you what our products look like while installed on the vehicle.
Here is a link of our SFC's
http://www.umiperformance.com/catalo...jbdcp9mpi7bhq4
And as far as our Wonder Bar I don't have any pics of the installation at this moment. Sorry for any inconvenience. What type of fan combination are you running? There is a possibility of trimming the fan shroud and some duel fans will have a clearance issue. If you can leave me know I can just reassure you that you will not have any issues.
Thanks
Brad
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