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Big Brake Upgrade

Old 10-13-2018, 09:14 PM
  #1  
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Car: 1988 IROCZ
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Big Brake Upgrade

Just put together my long awaited C4-HD 13", FSLI-4 front brakes and found they hit the 1988 IROCZ wheels.

Let me be clear, I did not buy the brakes from BBU. I simply decided to ask someone in the business for ideas.
Long story short, Scott took the time - over several days - to help me determine that the width of the FSLI-4 is too wide to fit my 1988 16" wheels without a wheel spacer. A spacer that would push the tire out past the fender which I did not want.

Instead of selling me something I didn't need, Scott told me what I needed to resolve the problem. He then suggested the narrower, Wilwood BNSLI-6 caliper to keep wheel offset in check. He did not try to sell those to me either. They fit perfectly by the way.

Amazing customer service and a great guy.
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Old 10-13-2018, 09:38 PM
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Re: Big Brake Upgrade

Great feedback!! Scott is a top shelf guy, fantastic to deal with and to just shoot the breeze with.
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Old 10-14-2018, 09:58 PM
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Re: Big Brake Upgrade

Not surprised to hear that.Also have nothing but positive things to say about BBU/Scott.Was a great help & bought some great products from him.
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Old 10-16-2018, 01:54 PM
  #4  
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Car: 1992 Z28 Targa Top. Full air ride
Engine: 305 5.0 tpi v8
Transmission: A4
Axle/Gears: 3.73 gears posi
Re: Big Brake Upgrade

I also have nothing but good things to say about Scott and BBU. Got my 4 piston Brembos from him and I couldn't be happier. A+
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Old 10-16-2018, 04:56 PM
  #5  
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Car: 92 Z28
Engine: ls3
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Re: Big Brake Upgrade

Scott is a great guy to work with.
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Old 10-17-2018, 04:40 PM
  #6  
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Car: 1988 IROCZ
Engine: ZZ4
Transmission: T-56
Axle/Gears: MOSER 9", 4.11 gear
Re: Big Brake Upgrade

The BNSLI-6 Scott recommended, installed.

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Old 10-17-2018, 04:52 PM
  #7  
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Car: 1988 IROCZ
Engine: ZZ4
Transmission: T-56
Axle/Gears: MOSER 9", 4.11 gear
Re: Big Brake Upgrade

It's hard to get a picture that clearly shows it but, there's .15" clearance. Wilwood recommends a minimum of .080".



Last edited by rurnt88; 10-18-2018 at 08:06 PM. Reason: Added Information
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Old 10-18-2018, 02:29 PM
  #8  
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Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Big Brake Upgrade

That's snug.
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Old 10-18-2018, 08:11 PM
  #9  
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Car: 1988 IROCZ
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Re: Big Brake Upgrade

Originally Posted by DynoDave43 View Post
That's snug.
Yep. 0.15". Added information above.
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Old 10-19-2018, 06:11 AM
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Re: Big Brake Upgrade

Yikes. Is that adequate, with rim flex and all?
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Old 10-19-2018, 07:04 AM
  #11  
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Axle/Gears: MOSER 9", 4.11 gear
Re: Big Brake Upgrade

Originally Posted by DynoDave43 View Post
Yikes. Is that adequate, with rim flex and all?
Scott said this about the stock 1988-90, 16" wheels," Even with the 6 piston you will need a .050-.100 wheel spacer to have breathing room."

So, a .100" slip-on spacer will be used.
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Old 10-22-2018, 08:36 PM
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Re: Big Brake Upgrade

Good to know. Thanks.
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Old 10-23-2018, 04:42 PM
  #13  
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Location: Wichita Kansas
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Car: 92 RS
Engine: LT1
Transmission: 700r4
Axle/Gears: 3.73
Re: Big Brake Upgrade

His customer service is great. That is why I purchased my CTSV brakes from him.
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Old 01-15-2019, 10:39 AM
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Re: Big Brake Upgrade

I was very very impressed and thankful for Scott who has helped me a LOT over the past week with understanding/explaining how to configure my existing EdMiller flynbye rear C4 12" disc conversion brackets to be used on a moser 12 bolt rear that I am having built for me. Even though I asked him questions about a competitors product, Scott replied quickly, thoroughly, and in a language that made sense to me. We exchanged several emails back and forth and he was incredibly helpful during it all. Top notch !
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Old 01-15-2019, 12:33 PM
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Re: Big Brake Upgrade

Scott is a total class guy, I recommend his business to everyone. I love my kit from him, he was great to deal with, even just chatting as car guys.
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Old 01-16-2019, 01:03 AM
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Re: Big Brake Upgrade

Another success story here, too. I felt like I was communicating with a friend. Scott takes your project personally, to make sure everything will be right. I'd read all of the great comments about him/BBU throughout the years, which is why I contacted him for my upgrade, so I shouldn't have been surprised by his excellent service, but I didn't expect the experience to be as great as it was... and still is. My front upgrade turned-out exactly as I had envisioned it. The rear, well, we're still working-on, something new, not earth-shattering, just new, so I'm not sure I'm at liberty to say yet. But we're almost finished, so it should be available soon. So like everyone keeps saying, if anyone is thinking about a big brake upgrade, contact Scott. You'll be glad you did.
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Old 01-19-2019, 07:00 AM
  #17  
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Re: Big Brake Upgrade

Originally Posted by LAFireboyd View Post
Another success story here, too. I felt like I was communicating with a friend. Scott takes your project personally, to make sure everything will be right. I'd read all of the great comments about him/BBU throughout the years, which is why I contacted him for my upgrade, so I shouldn't have been surprised by his excellent service, but I didn't expect the experience to be as great as it was... and still is. My front upgrade turned-out exactly as I had envisioned it. The rear, well, we're still working-on, something new, not earth-shattering, just new, so I'm not sure I'm at liberty to say yet. But we're almost finished, so it should be available soon. So like everyone keeps saying, if anyone is thinking about a big brake upgrade, contact Scott. You'll be glad you did.
Contact info for Scott?
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Old 01-19-2019, 12:41 PM
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Re: Big Brake Upgrade

On the homepage, down the right margin, there's a column of categories. One category is "Links," and there's one that says, "Questions? Email us." Click on it, and it takes you to a page with the email address:

[email protected]
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Old 01-19-2019, 04:50 PM
  #19  
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Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: Big Brake Upgrade

I'm glad I held off and didn't do the LS1 brake upgrade. I'm hoping with my new 17" replicas from Hawks I can fit a bigger caliper/rotor in them vs the stock 16's.
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Old 02-21-2019, 11:47 PM
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Re: Big Brake Upgrade

Linked, as mentioned in my above posts:

https://www.thirdgen.org/forums/brak...-new-rear.html
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Old 02-24-2019, 09:07 AM
  #21  
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Engine: 383 TPI
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Re: Big Brake Upgrade

I'm glad I held off and didn't do the LS1 brake upgrade. I'm hoping with my new 17" replicas from Hawks I can fit a bigger caliper/rotor in them vs the stock 16's.
I'll be curious to see what you get in there. I've got the LS1 fronts, and it's been a GREAT upgrade. Worth every penny. Still......I'll have the Gold 17" irocs soon (I hope) and eventually and 8.8. ...when I do, I plan to upgrade all four corners.
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