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 Write-Up: F-Body Brake Mod

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robotennis61
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PostSubject: Re: Write-Up: F-Body Brake Mod   Mon Sep 10, 2012 1:12 pm

Ok. So I got to thinkin' It might not be such a bad idea to tap into the cast iron after all? But I love me a nice Heli-Coil! So I drive the GFs SantaFe over to my local hardware store to pick up my kit.$50 bucks! Well..my Heely fetish must wait.
So I'm back at the house ready to use the tap AA told me to buy oh..way back when...What the hey!? Fuck it! I'll do it the AA way.
I took a few pics to help someone else who might get the nerve up to do the whole mod.At least this is how I did it.It would help if I had a drill press to set up the bracket nice and level and plumb but I dont.I do,but its a HF piece-o-crap. I leveled it best i could on my work table.I placed a 1/4 sheet of steel under the bracket to level it up real nice.


I then drilled out the bracket


If you start out as "straight in" as possible with the feel & eye ball method,work it in slowly at first.The drill bit will begin to follow the original hole if you let it.from then you just finish drilling.You have to be really ham fisted to wobble the hole.so take yer time.Of course taking it to a machine shop would be best if you dont have a metal drill press or the know how to free hand it.12mm bit of course.

I then took my 14mm x 2.0 tap and coated it with oil to prevent burn.


Like with the drill bit you must make sure the tap goes in straight A light but firm pressure will line it up.Like the drill bit,once the bit is on its way it will go in straight


And here is the finished bracket



A nice little 14mm shoulder bolt



And a little dab of locktite Red to finish it off.



All installed and ready to ride along to participate in high octane gasoline consumption





Last edited by robotennis61 on Wed May 22, 2013 9:06 pm; edited 4 times in total
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robotennis61
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PostSubject: temp   Mon Sep 10, 2012 8:28 pm

One thing I gotta say about the Twin Piston caliper, Whosoever rides on the OEM single piston caliper is missing something really good.They stop the car oh so nicely.The pedal,oddly enough,is softer.I know my system is bled correctly.But braking is like"man! this pedal feels different?" but look in front of you and your normal stopping distance is way shorter.Modulation is also better.You really have a better feel of the braking system than the single piston.
My adjustable proportioning valve also helps me set up the system in many different ways.I have a little more front end bias now.It feels good.
It's a MUST do mod.
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charlieRobinson
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Feb 16, 2013 2:23 pm

I remember reading somewhere that the Fbodies are in fact lighter than the OEMs. Is this true or am I making things up? Can anyone confirm?
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robotennis61
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Feb 16, 2013 2:58 pm

you mean the components of the front end? the calipers are lighter.
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AA
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Feb 16, 2013 4:01 pm

F-body calipers are aluminum and significantly lighter. Autozone lists them at 6 lb each compared to 9.9 lb ea for cast iron OEMs. Iron brackets are 3 lb for F-body, 4 lb for OEM.

F-body pads are larger and heavier, though. 2.13 lb per wheel. OEM are 1.90 lb per wheel.

Total weight for loaded F-body (est): 11.13 lb/wheel

Total weight for loaded OEM (est): 15.8 lb/wheel

I have a pair of F-bodies sitting right here, but no scale...

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'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
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robotennis61
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Feb 16, 2013 4:43 pm

thats light. this mod along with the alu knuckles and coilovers cut my front end weight by allmost 50lbs. im going to attempt modding the rear brakes and adapt the f-body calipers to the rear.
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Mr.Riviera
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Feb 16, 2013 5:02 pm

you need to consider the 95/96's use smaller rotors so upgrading to fbodys does increase rotating mass by upping to a 12" rotor.
97+ rivs dont need to factor this in

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1996 with 244k miles, L324" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs.
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PostSubject: Re: Write-Up: F-Body Brake Mod   Wed May 22, 2013 8:59 pm

What exactly needs to be modified to make this brake mod work? Ive seen something about drilling holes etc.
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AA
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PostSubject: Re: Write-Up: F-Body Brake Mod   Wed May 22, 2013 9:05 pm

Depends on what year car you own (right now that info isn't in your sig). Sorry, can't help you.

But here's where you can find all the answers on your own:

http://rivperformance.editboard.com/t2310-write-up-f-body-brake-mod

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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highwaywarrior
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PostSubject: Re: Write-Up: F-Body Brake Mod   Wed May 22, 2013 9:17 pm

Oh shit i knew i forgot to put that in my sig lol 98 riviera holdon
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matt270avian
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PostSubject: Re: Write-Up: F-Body Brake Mod   Tue Jun 18, 2013 7:10 am

Does anyone have a part number for the knuckles? I was going to check and see what cars they came off of because the junkyards around here have been Rivless for years.
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PostSubject: Re: Write-Up: F-Body Brake Mod   Tue Jun 18, 2013 8:41 am

I did a little research and found the following vehicles to have the same knuckles as '97 Riv:

-2000 Bonneville
-2000 Lesabre
-2000 deVille
-97-00 Park Ave
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matt270avian
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PostSubject: Re: Write-Up: F-Body Brake Mod   Tue Jun 18, 2013 10:11 am

Thanks Dave. I found 2 on Ebay, $35 each. Should I jump on them?

http://www.ebay.com/itm/98-99-00-SEVILLE-R-FRT-SPINDLE-KNUCKLE-39188-/160895710869?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2000%7CModel%3ABonneville&hash=item257621b695&vxp=mtr

http://www.ebay.com/itm/00-LESABRE-L-FRT-SPINDLE-KNUCKLE-39189-/150916927885?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2000%7CModel%3ABonneville&hash=item232359918d&vxp=mtr

Claimed to work on:
AURORA 97-99
BONNEVILLE 00
DEVILLE 00 opt JL9 (std brakes)
LESABRE 00
PARK AVENUE 97-00
RIVIERA 97-99
SEVILLE 98-00
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charlieRobinson
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PostSubject: Re: Write-Up: F-Body Brake Mod   Tue Jun 18, 2013 10:15 am

Do it and report back with your findings!
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matt270avian
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PostSubject: Re: Write-Up: F-Body Brake Mod   Tue Jun 18, 2013 10:33 am

Do I need the hub and bearing too?
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69GSColorado
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PostSubject: Re: Write-Up: F-Body Brake Mod   Wed Nov 20, 2013 10:49 pm

You got 97+ spindles and struts for the swap?

matt270avian wrote:
Secured the parts for the F-Body brakes along with a set of vents that I had broken, and T fittings for my boost gauge.
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matt270avian
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PostSubject: Re: Write-Up: F-Body Brake Mod   Wed Nov 20, 2013 11:32 pm

Got a pair of used spindles off of a 98. Not sure what route I want to go for the struts though. Why go for stock 97+ when I could get aftermarket?
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PostSubject: Re: Write-Up: F-Body Brake Mod   Thu Nov 21, 2013 4:47 pm

I was considering the F-Body upgrade, but I didn't know whether or not it requires using 97,98, or 99 aftermarket/oem struts, which I believe use a completely differ mount setup than the 96 and would require drilling. I know the spindle swap is required, but that wasn't my big concern. Matt, do you happen to know?
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matt270avian
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PostSubject: temp   Thu Nov 21, 2013 5:28 pm

The only other thing that I'm positive on is that you have to drill and tap the F-body caliper brackets to match the Riviera bolts. I'll read through the thread again to see if I can find more info. Suggest you do the same.
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Mr.Riviera
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PostSubject: Re: Write-Up: F-Body Brake Mod   Thu Nov 21, 2013 8:00 pm

You will have to elongate the top mount holes to align with the 97+ top mounts. They are a different design and 96 ones will not work.

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1996 with 244k miles, L324" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs.
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matt270avian
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PostSubject: Re: Write-Up: F-Body Brake Mod   Thu Nov 21, 2013 8:19 pm

Would I need to re-modify my STB?
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Mr.Riviera
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PostSubject: Re: Write-Up: F-Body Brake Mod   Thu Nov 21, 2013 9:13 pm

I didnt have to. I kept those holes close enough. One thing to consider when modifying the holes for a top mount. If the location of the center of the spring (and strut) changes it will effect how the car handles. Positive caster is better for "spirited driving" but dont go too far off from factory location. To get slight positive caster, shift the top mount towards the rear of the car when elongating the factory hole (s).

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1996 with 244k miles, L324" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs.
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Nov 23, 2013 2:25 am

Interesting MR. Rivi. I went to get an alignment and was told that my drivers side strut was bent. I was pondering whether there is an adjustment I could do. The top of the tire is slanted in. It was like a 2 on the alignment machine
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Mr.Riviera
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PostSubject: Re: Write-Up: F-Body Brake Mod   Sat Nov 23, 2013 11:31 am

Slanted in (towards the engine) would indicate a camber issue. moving the top mounts should only effect the caster angle.
If the strut it bent that would be the first ive heard of that happening.
You could always try camber bolts. those should give more angle room when aligning the car.

_________________
1996 with 244k miles, L324" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs.
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PostSubject: Re: Write-Up: F-Body Brake Mod   Mon Dec 30, 2013 2:22 am

Just some information being dumped.

Chevy Tahoe's from 00+ have dual piston calipers in the front and rear. The front rotors are 12"x1" and the rears are (oddly) 12.75"x.75". However, they are 6 bolts instead of 5. Then, in my searches I found that the front and rear calipers are used on basically every GM truck/van from 00-08 with some variations. Next time we do a brake job on our truck I might grab the calipers and try them out.

I also found that a lot of the people with >97 Camaro's are tending to go to C5 Corvette brake hardware because it is apparently stronger and lighter. I was unable to find any GM cars made before 96 with dual piston calipers.

I was also reading another thread ( http://rivperformance.editboard.com/t8685-possible-06-monte-impala-brake-upgrade?highlight=calipers ). It mentioned that the Monte Carlo brakes should bolt up to a 96 Aurora, which should share the same hardware as a 96 Riv.
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