So in my research and attempt at a poor man's bigger brake upgrade on my sedan, I found that the rwd coupe from 2010+ received 330mm front and rear rotors. The sedan comes with the smaller 320mm front 307 rear. I ordered a full brake setup from rockauto to swap over to the bigger coupe brakes (not akebono). Upon receiving and comparing the brakes (I have only made it to the front brakes rears will be later today) I found the that sedan has a bigger dual piston caliper and bigger brake pad up front with a smaller rotor than the coupe. The coupe brake pad is about an inch narrower and about the same height. The coupe is also a single piston brake caliper. Very strange. I am at a loss of what to do here. Seems the larger rotor setup on the coupe is actually not as good. Maybe Infiniti just made the rotors bigger for looks on the coupe? Going to see if I can hybrid the dual piston with the coupe rotor. Will be reporting back

 

Interested to see how it turns out. Especially the rears.

Years and years ago, I took dual piston calipers from one car, rotors and caliper brackets from another and put them on my Accord. Was like an OEM big brake kit.

 

Honda is much nicer to the car enthusiast. I used to build them back in the day.

Ok so sedan calipers will not clear the added 5mm radius of the bigger rotors. It seems to clear the width. I don't feel comfortable modifying the caliper though to fit the height. If the mounting hardware allowed for even slight adjustment I could probably make it work. We are talking like 2-3mm here.

 

You are right about Hondas!

I personally wouldn't modify anything. Too important of a system. Does it look like the coupe brackets/hardware might port over to the sedan? Tbh, I'm not familiar with either lol.

 

You should just start collecting the part's for the Akebono BBK slowly and live with what you have for now, that's what I am going about now, and I have to do the brakes on mine right now (rotors and pads) so she will be remaining a stock set up for now.

For me I need to get two sets of 19 in. rims as well to accommodate the bigger brake's.

Good luck on you project

 

acura rl upgrade? I remember seeing that on v6p.

I wouldn't screw with the factory system. I suggest calling up local scrap yards and finding the akebono calipers.

 

Ok for the record you just can not get the dual Pistons to work on the coupe rotors.

I just went ahead and installed the coupe brakes. I am almost done with the front. I will do my best to find that data again but a quick Google search showed that the stopping distance between the rwd coupe and AWD coupe was within 6 feet of each other. The AWD coupe has the sedan journey brake system and the rwd coupe has the bigger 330mm f and r brake rotors (the system I am currently installing). Now they attributed the added distance to the AWD being 200lbs heavier. Either way they should perform pretty close and my reasoning for just going forward with the single piston is that I am trying to fill in the opening in the wheels. The performance is pretty much a wash and I will let you all know if I feel like it's improved or degraded in a few hours once done.

Also, I got the entire brake setup for cheaper than just stoptech slotted rotors and same ceramic pads that came with this kit as replacements for the sedan. This will ultimately cost me about $100 less

 

Mine were the Acura Legend dual piston calipers. Brackets and rotors from a TL/CL.

 

For the rears you have to modify the dust shield like with the akebono upgrade. I simply chose to remove both front and rear. Everything else bolts right up.

Let me restate...THIS MODIFICATION IS SIMPLY FOR LOOKS. You will not gain any performance with it. I did however get the entire setup for $350 so I can't complain. And I needed a brake job anyway.

I am attaching a before and after type picture to compare the looks of the rear stock vs base coupe rotors. The pads and calipers in the rear are the same size just with a different height mounting bracket to accommodate the larger rotor.

 

Looks better! Good job!

 

I have one more side to go then bleeding the brakes. It's beer 30 so I had to stop for the day

 

Ok so performance​ seems better however I was due for brakes anyway and had a bad brake wobble to begin with so that is a mute point. Car stops very well. Will upgrade to slotted rotors in future. The brakes look way more aggressive than factory sedan brakes. Overall, I am happy with the new setup. Should look good under some 18" wheels. For the record, they fit the factory 17s fine. I put a 3mm spacer on but it isn't needed. I only used it because I had it sitting around.

 

Do you happen to know the diameter of the sedan Akebono rotors?

 

Here's the rundown~
Akebonos~355mmF/350mmR
Base Coupes 330/330
Base Sedan 320/307

Anb for some reason the calipers & pads are the same for the rear base brakes for coupes & sedans

 

Of course Blnewt, the G encyclopedia, has the answer!