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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Sat Aug 20, 2011 4:58 pm Post subject: |
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| I was curious what LS1 brakes might do so I measured out the C4 HD rotors and found it spaces out the wheel 3/8 inch. I stacked up 3/8 inch worth of washers and put them on my stock brakes. It might work but the wheel is right out there and I'm not sure if it will rub on the fender when the suspension compresses. I need to get the engine in the car to know. |
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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: Sat Aug 20, 2011 5:02 pm Post subject: |
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| Umm... not to be a dick here, Jon, but how attached are you to those rims? Seems to me that's the crux of your problem. |
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iansane Member

Joined: 16 Jan 2004 Posts: 5742 Location: Bothell
1991 Pontiac Trans Am
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Posted: Sat Aug 20, 2011 8:39 pm Post subject: |
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| QwkTrip wrote: | | I was curious what LS1 brakes might do so I measured out the C4 HD rotors and found it spaces out the wheel 3/8 inch. I stacked up 3/8 inch worth of washers and put them on my stock brakes. It might work but the wheel is right out there and I'm not sure if it will rub on the fender when the suspension compresses. I need to get the engine in the car to know. |
Maybe it's because I just got off work here but I'm not sure what you're trying to express that you did... you stacked washers on your factory brakes for what reason now? Factory wheel or the ROH?
Sidenote, wtf ever happened to ROH? For awhile all I was seeing on thirdgens were the RTs and the Snypers. Now you NEVER see them? _________________
| Quote: | | Sometimes I actually think I'm slightly retarded in the mouth. |
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blue89 Member

Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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Posted: Sat Aug 20, 2011 8:49 pm Post subject: |
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| Seems like the wheels are the major problem. Are you thinking of going LS1? You know, you could do the drifter rice thing and stretch some 215/40 rubber on those rims. Hehe. |
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Sat Aug 20, 2011 10:19 pm Post subject: |
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Yes, I like my ROH wheels a lot. They look very nice and the price was right. New wheels are an option but everything I have found that is nice is very expensive. Options suck in economy wheels for our cars now that ROH can't be purchased.
Which is a perfect lead in to let you know that ROH is still in business but they are no longer importing to North America. Any new ROH wheels you see for sale is old inventory that is being used up. When they are gone, they are gone forever.
Ian, I was trying to see where the wheel would sit if I did an LS1 brake swap. I added 3/8 inch stackup to my stock brakes to simulate the thickness of the LS1 rotor. |
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iansane Member

Joined: 16 Jan 2004 Posts: 5742 Location: Bothell
1991 Pontiac Trans Am
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Posted: Sat Aug 20, 2011 10:55 pm Post subject: |
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| QwkTrip wrote: | | Ian, I was trying to see where the wheel would sit if I did an LS1 brake swap. I added 3/8 inch stackup to my stock brakes to simulate the thickness of the LS1 rotor. |
Ooooooh. Makes mucho more sense now. FWIW, My fronts put the wheel almost flush with the outside and I don't rub under normal driving. |
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Sat Aug 20, 2011 11:03 pm Post subject: |
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| Using the 3/8 inch spacer, if I put a plum-bob on the fender then the string is getting pushed out by the tire. |
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iansane Member

Joined: 16 Jan 2004 Posts: 5742 Location: Bothell
1991 Pontiac Trans Am
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Posted: Sun Aug 21, 2011 12:41 am Post subject: |
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How much room do you have from tread to fenderlip? What springs are you using again?
Edit; If I dropped a plumb bob from my fenderlip it would hit the sidewall bulge and be ~1/4" from my wheel lip. |
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Sun Aug 21, 2011 1:53 pm Post subject: |
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Mine measures 1/2 inch from outside fender lip to edge of tire. I have particularly small tires for the rim to help clearance to the sway bar. It will stick out more if I use a bigger tire.
I was using Suspension Techniques springs that are pretty stiff, but those didn't fit in the spring pockets of the BMR A-arms. Now I have a set of Moroso Trick Springs so there is going to be a lot of wheel travel.
I'm considering some CCW modular wheels so I can buy new center sections if this issue ever happens again. Thinking about a set of 16 inch rims on the back with some chubby Mickey Thompson drag radials.
http://www.ccwheel.com/wheelprofiles-display.php?id=LM20 |
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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: Sun Aug 21, 2011 7:14 pm Post subject: |
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| CCW wheels are sick! I say do it! |
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Aug 22, 2011 4:07 pm Post subject: |
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| Did you guys know that BMW wheels fit on our cars? Those are a heck of a lot cheaper than what I've been looking at. |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5477
1987 Pontiac Formula
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Posted: Mon Aug 22, 2011 4:55 pm Post subject: |
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| Yes,.. they're actually just a hair off on the bolt pattern.. difference from metric to standard.. but it doesnt seem to bother. |
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Aug 22, 2011 5:01 pm Post subject: |
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Well, why didn't you tell me this earlier???  |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5477
1987 Pontiac Formula
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Posted: Mon Aug 22, 2011 5:07 pm Post subject: |
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| Cause I figured you were like me.. and that "hair" off stuff would bother me. |
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Aug 22, 2011 5:25 pm Post subject: |
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| It does bother me, but not half as much as the fact that I can four BMW wheels for the price of one CCW wheel. |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5477
1987 Pontiac Formula
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Posted: Mon Aug 22, 2011 5:50 pm Post subject: |
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| Why worry about wheels til you are all done anyway? 10 years from now they may have some really sweet wheels out there. |
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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: Mon Aug 22, 2011 6:25 pm Post subject: |
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| QwkTrip wrote: | | Using the 3/8 inch spacer, if I put a plum-bob on the fender then the string is getting pushed out by the tire. |
Roll and pull the fenders, maybe even dial in .5* of camber. That's an easy fix. If you really like your wheels you can make the car fit them.
| QwkTrip wrote: | | Did you guys know that BMW wheels fit on our cars? Those are a heck of a lot cheaper than what I've been looking at. |
I've been keeping my eye out for BMW 7 series split 5 spokes. I think they are 18x8.5/9.5 but dont be stealing my idea now  _________________ 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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blue89 Member

Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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Posted: Mon Aug 22, 2011 6:36 pm Post subject: |
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And their brake rotors fit as well. Same offset and you can get almost any size. But their wheels are awesome. Thats the reason I didn't get the 2" offset spacers, so I can run the 19" M3 wheels  _________________ E30
86 RS - 7.4L V8 SOLD
89 RS - 3.25L V6 REMOVED
89 RS - 5.7L LT1 SOLD
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QwkTrip 11sec Club

Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Aug 22, 2011 7:10 pm Post subject: |
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| Wow.... Sure are a lot of those BMW wheels with cracks in them. They're going to live a lot harder life on my car than any BMW. |
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blue89 Member

Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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Posted: Mon Aug 22, 2011 8:17 pm Post subject: |
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| Keep in mind that most bmw drivers, oddly enough, don't know how to drive. Present company excluded. |
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