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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Tue Apr 08, 2014 9:54 pm Post subject: Ready for SFC's |
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Anybody have advice on subframe connectors? Im looking at UMI weld in style ones that work with my big hooker Y-pipe. I do not want to get in to cutting up the floor though. Is there any type or brand I should stay away from? Just want to stiffen up the chassis to complement my new found horsepower and everyone says sfcs make a night and day difference. Thoughts? _________________
'88 FORMULA |
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Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Apr 09, 2014 6:20 am Post subject: |
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Cutting up the floor?
Of the Sfcs I've seen and done, I've never seen or had to cut the floor.
Sfc that tie into the control arm bolt and have a forward cross brace are best. _________________ A redline a day keeps the carbon away! |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
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Posted: Wed Apr 09, 2014 6:21 am Post subject: |
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The really cheap ones are just a straight bar and you have to notch the floor pan for the bar to go up into. Kinda nasty. |
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Dewey316 The Lama
Joined: 08 Jan 2004 Posts: 7295 Location: Bringing the tech
1990 Chevrolet Camaro RS
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Posted: Wed Apr 09, 2014 6:32 am Post subject: |
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I think the old hotchkis ones are the only ones I have ever seen that had instruction that included cutting. |
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Wed Apr 09, 2014 7:47 am Post subject: |
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Yeah, I came across those while browsing and wondered why they were so cheap. Read a little and found out you have to hog out the floor. Im not cool with that. lol |
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Dewey316 The Lama
Joined: 08 Jan 2004 Posts: 7295 Location: Bringing the tech
1990 Chevrolet Camaro RS
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Posted: Wed Apr 09, 2014 9:33 am Post subject: |
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Those look very much like the original Spohn design from years ago with the box tube. In which case, yes they will. I have GFX and you can just see the red of my Spohn units stick out even under the GFX if you really look closely. |
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Wed Apr 09, 2014 10:12 am Post subject: |
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In that case Id better stick with black, so they wont stick out so much.
What were your first thoughts after putting yours on? |
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DBL_TKE Member
Joined: 28 Feb 2007 Posts: 1505 Location: Aloha, OR
1991 Chevrolet Camaro Z/28
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Dewey316 The Lama
Joined: 08 Jan 2004 Posts: 7295 Location: Bringing the tech
1990 Chevrolet Camaro RS
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Posted: Wed Apr 09, 2014 11:35 am Post subject: |
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fiveoformula wrote: | What were your first thoughts after putting yours on? |
hahah, "Hmmm, I can't hear the dashboard rattling, what is wrong" |
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Wed Apr 09, 2014 12:19 pm Post subject: |
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I've read that Skyler, its been really slow at work... lol |
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DBL_TKE Member
Joined: 28 Feb 2007 Posts: 1505 Location: Aloha, OR
1991 Chevrolet Camaro Z/28
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Posted: Wed Apr 09, 2014 1:09 pm Post subject: |
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Personally I will be going with a tubular design. But for reasons that probably wouldn't matter to you. My exhaust is tucked up pretty tight to the floorboard not to mention that it's a dual Y-pipe which puts the outer pipe right up next to the pich rail. So the square designs won't fit my exhaust. Also even if I did have a singe Y-pipe I wouldn't want something that would sacrifice even more ground clearance. I only have about 2" as it is. _________________ Richmond 3.73 posi| 36/24 sway bars | SLP LM2 | Koni's | Ground Control 800/200 | Y2K wheels | Dyno Don headers & Y-pipe | airfoil | BBK underdrive pulleys | Raised strut mounts | Extended ball joints | LCARB'S
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Wed Apr 09, 2014 2:04 pm Post subject: |
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Only really concerned with them fitting with my 3" Y pipe. I doubt they'll be the lowest hanging part on the chassis. Plus im not trying to put m car in the weeds like you. lol |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Apr 09, 2014 3:51 pm Post subject: |
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Nothing wrong with red frame rails.
For example, the UMIs peeking out under Gabe's car:
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
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Posted: Wed Apr 09, 2014 4:33 pm Post subject: |
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Only thing I didn't like about the tubular designs is that they don't fit tight to either the pinch weld or the the floor for welding. The square tubes do. Also you'll be grinding off quite a bit of the powder coat to do the welding. |
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Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Apr 09, 2014 6:07 pm Post subject: |
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No ground effects you're going to see SFC every time period.
I don't like the tubular ones either primary as Brandon pointed out for installation purposes including welding to the floor and cross beams.
Ground clearance shouldn't be an issue with SFCS and exhaust. I had dual 3" exhaust, and did Mikes original dual 3" and the SFCS were the lowest point. Mike's redesign with dual 2.5 still cleared, and the SFCS were installed when he still had SLP headers/y-pipe. I did no change to the SFCS when building the exhaust.
In addition, the square tube design is easier to tie some weld into the outer "pinch" weld for extra rigidity. _________________ A redline a day keeps the carbon away! |
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Wed Apr 09, 2014 7:47 pm Post subject: |
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Anyone have pics of them on a car with no GFX? |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5474
1987 Pontiac Formula
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Posted: Wed Apr 09, 2014 8:20 pm Post subject: |
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Homemade square tubes on my car. [img]http://cascadecrew.org/phpBB2/garage.php?mode=view_gallery_item&type=garage_mod&image_id=97[/img] |
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QwkTrip 11sec Club
Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Wed Apr 09, 2014 9:56 pm Post subject: |
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I have round tube on my car and there are a couple pictures in my "garage" on this site. Square tube is used to tie into trans tunnel, only the long runs under the rockers are round.
Color is going to make it stand out more than round vs. square. |
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fiveoformula Member
Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
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Posted: Thu Apr 10, 2014 8:27 am Post subject: |
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They dont look too bad on your car Brandon. You can see them but they look like they belong there.
Im looking at these now, they're UMI ones, Id get them quicker since summit stocks them.
Anyone know where the extra bar in the picture goes? The other brand doesnt have that bar.
http://www.summitracing.com/parts/upi-2400-b/overview/
Last edited by fiveoformula on Thu Apr 10, 2014 8:43 am; edited 1 time in total |
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