94 accord typeR

looking into rotor over hub conversion and a 5 lug conversion. i was wondering if a v6 5 lug conversion would be R-O-H too

Fitz Williams

iTrader: (1)

A 5th Gen V6 is H-O-R but the 1st Gen Odyssey is R-O-H. The knuckles are the same. So if you are going to replace the bearing, then just order one for the Odyssey. Or pull the whole assembly from an Odyssey. The Odyssey hubs are cut for a rotor with a 70.1 mm center so you will have to use one of these or one from an 98 or earlier Acura RL.

94 accord typeR

would oddessy knuckles and hubs be useful for road racing

MAD_MIKE

Ody and V6 knuckles are the same and use the same bearing, only difference is one is HOR 4 x 114.3mm the other is ROH 5 x 114.3mm.

Ody/V6 bearing is larger and IMHO can take more load/abuse than the 2.2 stuff.

Install these knuckles on a lighter 2.2 car and track all day with no worries. Ody 5 lug is a more common(Ford/Mopar) bolt pattern so rims would be easier to locate, you will just have to verify your register bore is correct, or just change out the register bore ring(if applicable) on a set of wheels. Ody I think is 70 and Mustang is 71. It's very close. Would need to use ~20mm wheel spacer to use a Mustang 8" wheel on the Honda.
IIRC the rotor height is pretty close too, Crown Vic use 300mm rotors and the Cobra 94-04 Mustangs used 330mm for big brakes.
I've been meaning to look at the caliper mount boss'. Would be funny if the Cobra calipers bolted onto the Honda knuckles, you could have massive 13" brakes for a few bucks.
Great thing is Mustang of that gen used a 38mm rear caliper, slap on a Wagon caliper on the rear of your Accord, and the hydraulic bias would be correct.

Crap I might have to test fit some calipers now... bastards...

Fitz Williams

iTrader: (1)

The Odyssey center bore for the rotors is 70.1 mm, but the size of the hub at the point where it fits the wheel is 64.1 or the same as any other Honda Odyssey or Accord of that time. So when looking at wheels, anything 5x114.3mm, or 5x4.5" will fit the hub if it has a center larger than 64.1. Of course, offset is another matter. The wheels I have are Enkei Tenjin and have a 72mm center so I use centric rings to make up the difference. Probably not necessary, but why not.

Acura RL had a rotor that was 300 mm with caliper and bracket to match. They are a direct bolt-on to the Odyssey knuckle. Acura GS and NSX calipers will also fit in that bracket with no mods. Fast Brakes makes a rear bracket for the rear to use with 313 mm Pilot rotors. That and 38 mm calipers for a Gen5 wagon, or a Gen1 TL are a direct bolt-on and it makes for quite a setup.

94 accord typeR

great info guys thanks!
is the odyssey rotor 16"? was gonna use v6 accord rotor and bracket
I think the accord bracket is 28 t

Fitz Williams

iTrader: (1)

The Accord is a 25T as is the Odyssey. 28T goes with the Legend and the NSX. It is for a 28 mm width rotor. The V6 and Ody are both 282 mm in diameter. The Ody is ROH.

The difference in the 23T, the 25T and the 28T is the width of the rotor, not the diameter.

94 accord typeR

so i went to the boneyard and picked up these 2001 Mazda Millenia 2 pot calipers. fits the brackets and the Accord slide pins thread into the Mazda calipers

Fitz Williams

iTrader: (1)

So I am guessing that you are going with the 260 mm rotors? That style of slide pin is different from the ones in the Ody and V6 brackets.

MAD_MIKE

If all you are doing is using a caliper with a larger bore(s) than stock this will decrease braking power/increase braking distances. Stock Accords have a 57mm front bores, those Millennia calipers are twin 43mm bores.

1 x 57mm = 2551.759mm²
2 x 43mm = 2904.402mm²

An increase of 13% front bias, the rear calipers need to be upped an equal amount to keep bias correct.

When increasing rotor diameter it is actually common to DECREASE caliper bore surface area to maintain overall brake bias.

Brakes are a system, any change done at one end, an equal amount of change must be done to the other to maintain the original brake bias balance.

94 accord typeR

yeah the slide pins pictured are the mazda ones but the accord I4 pins fit didnt have time to get V6 brackets

so u are saying that i should use smaller rotors? this is great info since i read that the NSX and Legend 2 pistons are less powerful than the ITR 57mm (stock accord)

honestly i went to the boneyard looking for Legend 2 pot calipers and they were single so then i saw these and figured id try them. from what i understand the bracket must match the rotor but the caliper is interchangeable (AV6 NSX ITR Legend GS)

Fitz Williams

iTrader: (1)

The V6, the Legend GS, and the NSX will all physically fit in the same bracket. They all have roughly the same piston hydraulic area. The GS and NSX two piston calipers add up to be about the same hydraulic area as the V6 and other Honda calipers. The later NSX calipers (97 and up) are slightly smaller in area. All are originally used with 282 mm rotors. If you use them on 260 mm rotors, you will have the same mechanical advantage that you do now. The GS and NSX are designed for a 28 mm thick rotor. If you use them on a 25 mm rotor they will let the piston extend out of the bore and extra 3 mm. If you use them on 23 mm rotors (Honda, Acura TL) they will extend out of the bore and extra 5 mm. It's like your pads have worn 5 mm when you first put them on. At maximum wear this could be a problem. Don't know for sure, but I would definitely change the pad a lot more often. What thickness rotor did the Mazda have?

The Gen 5 calipers have pins that screw into the calipers to anchor them. The GS and NSX, and other calipers like the V6, use pins that are anchored to bolts that thread through the caliper and into the pins. It looks like the Mazda uses the kind your Gen 5 I4 uses. If they will interchange in the same bracket, then good. That is something you will have to determine. First decide what rotor you are going to use. And you will need to do something about the rear brakes as well.

94 accord typeR

the mazda rotor specs are 295mmx28mm via rockauto.com

acura RL 98+ uses 300mm rotor and should fit (5 lug). i was thinking 280mm v6 and 25t bracket. i should just get RL/28t. 300mm is mazda stock +/- and honda versions are available.

the bracket/pins match. i quickly grabed a CL bracket to test fit and noticed that those pins were a lot smaller than the mazda/accord pins. pin bolt is 17mm banjo bolt is 12mm on madza calipers. i get what u are saying about stock madza specs. the calipers are fixed and the pistons move in and out so keeping them as close to stock as possible is going to work best

accord wagons use 38mm bore caliper in the rear. coupe/sedan use 34mm. should balance things out

the Legend caliper is 42mm/38mm and the nsx is 40mm/36mm or something close to that. the legend is slightly larger than the NSX. also the Legend caliper is designed to fit on the rear of the caliper not the front. could cause uneven pad wear if mounted in reverse. NSX are mounted in the front like accords/prelude etc. both the Legend and NSX caliper equals less area the ITR/accord wagon. the 57mm is just larger same equation mad_mike used. good to see these are slightly larger instead of smaller only diff between accord wagon/ITR and coupe/sedan is bleeder valve and pad lol. that also good to know

Fitz Williams

iTrader: (1)

I don't know what hubs you will be using, but the Acura RL rotors fit a hub with a 70.1 diameter. Honda, CL, and TL rotors use a 64.1 hub. This is one reason I went to the Odyssey hub. Because it fits an Acura RL rotor.

When you buy wagon calipers, mic them. I have found a lot of them to be 34 mm. I suspect this is because some mechanic couldn't find the correct ones (or didn't know the difference) and just used the 34 mm ones instead. Another source for the 38 mm caliper is the Vigor and the 1st Gen TL. The calipers are identical.

94 accord typeR

im gonna get Odyssey hubs. 300mm x 28mm RL rotors 28t brackets to match. i found that the Accord V6 rotor is 280mm x 23mm. no need for 23mm rotors

for the rear acura TL calipers. Accord V6 rotors and brackets. should be a nice build once i collect the parts

Fitz Williams

iTrader: (1)

The 28T bracket won't work with the 300 mm rotor. You will need the bracket that came with that rotor.

chrisnick

Interesting. Looking forward to seeing how this turns out.

94 accord typeR

i assumed they were 28t. Cant find Acura Legend 28t brackets without 2 piston calipers. Cant get NSX brackets either. RL bracket should fit Odyssey hub

thanks

94 accord typeR

good news!
mazda calipers are Akebono



got pistons out waiting on rebuild kit

peeled back/tore seal with pick tools

place one or two folded shop towels over piston

clamp with vice grips

use long needle nose pliers to wedge it out. bad technique shown place pliers on top of towel or careful not to scratch piston

when piston is out this far remove by hand

use pick tools to remove two seals and ring
install is reverse of removal

Fitz Williams

iTrader: (1)

A little compressed air will push the pistons out. Just use a block of wood to keep them from coming all the way out. Most any caliper bracket will "fit" the Odyssey knuckles/hub. The bracket has to be designed to (1) work with the diameter of rotor you will be using and (2) work with the thickness of rotor you will be using. For instance, a 25T bracket will be OK with a 282 mm diameter rotor, but not with one which is 28 mm thick. A 99-04 Acura RL bracket is designed to work with a 300 mm rotor of 28 mm thickness and fits an Odyssey hub.

At present I am trying to find a way go to a 320 mm rotor and keep my NSX calipers. I have two possibilities, but both require me to spend money on things which may not work. I have done too much of that already. I need to find a 2011 or later Odyssey front caliper, but they are too new to find in the salvage yards. They get repaired, not scrapped. So outside of buying one on Ebay, I haven't found another way to check it out. Fastbrakes also makes an adapter, but not for my specific application. Might work, might not.