Hyundai genesis coupe touring 3.8 rear Brembo on My CB7

[jamaicancb3]

Good job in getting it done man. I dont mean to burst anyone's bubble but. Wasn't this discussed by another member last month. He said the samething about using the washer. but then he was also talking about the lug pattern being the same or close to different generation accord (4x114.3 something like that). Also he was saying that he needs to find the correct size rotor so that he can get maximum performance out of the caliper.

Just found the thread after remembering i posted in it. Hear you go--->http://www.cb7tuner.com/vbb/showthread.php?t=155655

[tonylx87]

Ok I will repeat myself the OEM Hyundai genesis coupe 3.8 Touring rear Brembo 12.6 (Calipers) Bolt RIGHT UP to my CB7 front knuckle no special plate needed. How could it be Unsafe if it bolts directly onto your factory parts. I smell hatting not congratulation
Can you blow me were the pampers is?Also Im confused fake real cool brembos what are you gettin at Im lost

I think hes just lookin out for ur safety man , it was just a question

[ChIoVnIdCa]

Ok I will repeat myself the OEM Hyundai genesis coupe 3.8 Touring rear Brembo 12.6 (Calipers) Bolt RIGHT UP to my CB7 front knuckle no special plate needed. How could it be Unsafe if it bolts directly onto your factory parts. I smell hatting not congratulation
Can you blow me were the pampers is?Also Im confused fake real cool brembos what are you gettin at Im lost

3389 lbs Genesis Weight
2738 lbs Accord Weight

We will say the front to rear braking bias is 70/30

So on the Genesis the rear calipers you put on the front of your car "stop" 30% of 3389 lbs or 1016.7lbs

How you have them now on the front of the car they need to spot 70% of the Accord or 1916.6 lbs....

About double....


But I guess you look cool..

[GhostAccord]

But what if it's a 40/40 split like some of the other performance oriented 4w disc brake setups? I'm not siding with the OP I'm just saying.

However, Another couple of things to take into consideration would be the size of the caliper pistons and there orientation with the direction of the rotor. Sometimes they are set to have different clamping loads for a certain direction.

[jamaicancb3]

Ok then, well good for you sir on the conversion. Remind me of what size and type of rotor you are using Gooch?

Hey ChIoVnIdCa, you think a 40/40 prop valve would help him? I give a nay on that one, I would rather feel safer with legend calipers despite the whole leading edge and trailing edge problem that has been discussed. Personally i think if someone sprayed their caliper red and got the "H or Honda" printed in white on the caliper it would look way cool. my 2 cents

GOD DAMMIT!!! ghost accord beat me to it LOL

[deevergote]

3389 lbs Genesis Weight
2738 lbs Accord Weight

We will say the front to rear braking bias is 70/30

So on the Genesis the rear calipers you put on the front of your car "stop" 30% of 3389 lbs or 1016.7lbs

How you have them now on the front of the car they need to spot 70% of the Accord or 1916.6 lbs....

About double....


But I guess you look cool..

Thank you, Todd.

I'm done with this thread. I don't want to "hate"... so if Gooch wants to kill himself with his "cool" Brembo calipers that 1) weren't designed for his car, and 2) weren't designed for the FRONT of a car... he is welcome to do so.

I appreciate the originality... but that doesn't mean it's a good idea. They bolt right up... but bolting up isn't the function of a brake caliper. Stopping the car safely and reliably is what you need it to do. Just because it's a Brembo caliper doesn't convince me that it's going to stop the car safely. Maybe if you used the Hyundai's FRONT calipers, it'd work better. But I guess they don't bolt right up, eh?

And no, changing the proportioning valve won't necessarily help. These calipers are made to stop the half of a car that weighs only slightly more than a CB7. They are capable of handling considerably less than the front calipers. From a technical standpoint, these calipers are not designed to stop this much weight. They are most likely to fail when in the most extreme circumstances, such as a panic stop... when you need them the most.


We're going to have a wonderful, albeit short, relationship on this site Gooch. Welcome.

[jamaicancb3]

^^ ^^

You know i saw that one coming, but i chose to keep silent...sad. ANYWAYS, moving right along.

Hey Gooch, you do know that there is different models going out for the Genesis (single piston AND dual piston calipers for different models). Why not go check them out and see what the front caliper is like, get some substantial information and come back and let us know what's the situation.

Funny enough between your post and the other guy who made a thread about this (the one i posted earlier). Y'all haven't stated anything about the front calipers from the Genesis. I guess Deevergote is right (seeing as how no one has talked about the front calipers), looks like the front calipers does not bolt up and does not look cool (meaning the big Brembo logo not seen). Hey how about this, (no offense guys) if persons are so stuck up on wanting to see Brembo brakes on their CB (hell i know i am LOL) why not get Brembo rotors with Brembo pads, For those who haven't upgraded their front caliper, Do so, to the wagon calipers or the preludes (whichever. EVEN THE GUYS WHO HAVE STUCK WITH THE LEGEND CALIPERS!!) and slap a Brembo caliper cover on it and call it a day. No one has to know, thats your lil secret lmao.

[mndude07]

3389 lbs Genesis Weight
2738 lbs Accord Weight

We will say the front to rear braking bias is 70/30

So on the Genesis the rear calipers you put on the front of your car "stop" 30% of 3389 lbs or 1016.7lbs

How you have them now on the front of the car they need to spot 70% of the Accord or 1916.6 lbs....

About double....


But I guess you look cool..

Thank you, Todd.

I'm done with this thread. I don't want to "hate"... so if Gooch wants to kill himself with his "cool" Brembo calipers that 1) weren't designed for his car, and 2) weren't designed for the FRONT of a car... he is welcome to do so.

I appreciate the originality... but that doesn't mean it's a good idea. They bolt right up... but bolting up isn't the function of a brake caliper. Stopping the car safely and reliably is what you need it to do. Just because it's a Brembo caliper doesn't convince me that it's going to stop the car safely. Maybe if you used the Hyundai's FRONT calipers, it'd work better. But I guess they don't bolt right up, eh?

And no, changing the proportioning valve won't necessarily help. These calipers are made to stop the half of a car that weighs only slightly more than a CB7. They are capable of handling considerably less than the front calipers. From a technical standpoint, these calipers are not designed to stop this much weight. They are most likely to fail when in the most extreme circumstances, such as a panic stop... when you need them the most.


We're going to have a wonderful, albeit short, relationship on this site Gooch. Welcome.

Your logic is completely wrong. The braking bias is not arbitrarily controlled within the caliper itself. It is dependent on your trunion, or bias bar length. We don't have bias bars like a race car, but we do have a proportioning valve that has a similar effect. Also, the surface area of the pads, coeff. of friction, number of pistons, piston area, pad to disk depth, and several other factors have to considered to calculate braking bias. The brake bias is in terms of braking force applied, and is not how much weight the front and rear brakes handle.

These rear Hyundai brembos have a greater surface area, more pistons, more overall piston area, and assuming similar or, probably better pads than OEM accord, your braking would be improved over stock. Yes, your brake bias will be shifted forward more than stock, but overall braking will improve. Honestly, if you used a front genesis caliper, it would probably transfer the bias to the front so much that you would have horrible darting under heavy braking, and the car's rear end would be totally unstable. An exaggerated case would be the car doing an endo when you slam on the brakes.

To the OP, with these new brakes, your car stops much better, correct? Nice job on figuring out that they bolt on.

[Tippey764]

Your logic is completely wrong. The braking bias is not arbitrarily controlled within the caliper itself. It is dependent on your trunion, or bias bar length. We don't have bias bars like a race car, but we do have a proportioning valve that has a similar effect. Also, the surface area of the pads, coeff. of friction, number of pistons, piston area, pad to disk depth, and several other factors have to considered to calculate braking bias. The brake bias is in terms of braking force applied, and is not how much weight the front and rear brakes handle.

These rear Hyundai brembos have a greater surface area, more pistons, more overall piston area, and assuming similar or, probably better pads than OEM accord, your braking would be improved over stock. Yes, your brake bias will be shifted forward more than stock, but overall braking will improve. Honestly, if you used a front genesis caliper, it would probably transfer the bias to the front so much that you would have horrible darting under heavy braking, and the car's rear end would be totally unstable. An exaggerated case would be the car doing an endo when you slam on the brakes.

To the OP, with these new brakes, your car stops much better, correct? Nice job on figuring out that they bolt on.

Exactly what i was thinking... A caliper is a caliper. If it squeezes together on the rotor and stops the car better then stock then whats the problem?

[gloryaccordy]

3389 lbs Genesis Weight
2738 lbs Accord Weight

We will say the front to rear braking bias is 70/30

So on the Genesis the rear calipers you put on the front of your car "stop" 30% of 3389 lbs or 1016.7lbs

How you have them now on the front of the car they need to spot 70% of the Accord or 1916.6 lbs....

About double....


But I guess you look cool..

Your estimate of the weight split is ridiculous, even for a FWD car..

It's probably closer to 55/45, which would put the rear of the Genesis Coupe at 1519#.

Plus the Genesis Coupe rotors are bigger than stock and the calipers are dual piston (though admittedly I don't know if the piston or pad areas are bigger). Couple that with the fact that having these at the front means they will get more brake fluid and I don't think dude is putting himself in any danger. The main factors for braking power (piston area, pad swept area and rotor size) are all in dude's favor here...

[deevergote]

Your logic is completely wrong. The braking bias is not arbitrarily controlled within the caliper itself. It is dependent on your trunion, or bias bar length. We don't have bias bars like a race car, but we do have a proportioning valve that has a similar effect. Also, the surface area of the pads, coeff. of friction, number of pistons, piston area, pad to disk depth, and several other factors have to considered to calculate braking bias. The brake bias is in terms of braking force applied, and is not how much weight the front and rear brakes handle.

These rear Hyundai brembos have a greater surface area, more pistons, more overall piston area, and assuming similar or, probably better pads than OEM accord, your braking would be improved over stock. Yes, your brake bias will be shifted forward more than stock, but overall braking will improve. Honestly, if you used a front genesis caliper, it would probably transfer the bias to the front so much that you would have horrible darting under heavy braking, and the car's rear end would be totally unstable. An exaggerated case would be the car doing an endo when you slam on the brakes.

To the OP, with these new brakes, your car stops much better, correct? Nice job on figuring out that they bolt on.

And how do the pistons clamp down? Multi-piston calipers often have the clamping bias shifted to one piston or the other. I feel that saying "a caliper is a caliper" is a bit too simplistic. These are rear calipers. Engineered for the rear of a completely different car.

Now, I know I'm not an expert... but there isn't a single expert involved in this discussion at the moment. Personally, I'd rather argue on the side of caution and safety, rather than supporting originality that may prove dangerous.

[ChIoVnIdCa]

Where did you get the calipers and how much

[mndude07]

And how do the pistons clamp down? Multi-piston calipers often have the clamping bias shifted to one piston or the other. I feel that saying "a caliper is a caliper" is a bit too simplistic. These are rear calipers. Engineered for the rear of a completely different car.

Now, I know I'm not an expert... but there isn't a single expert involved in this discussion at the moment. Personally, I'd rather argue on the side of caution and safety, rather than supporting originality that may prove dangerous.

He drives the car fine so there obviously isn't any danger. What's going to fail? The pistons could sieze or the seals could leak...but that could happen just as easily on the Genesis itself. What else? The mounting bolts, but again, being a fixed caliper, the amount of shearing force on those bolts is going to be approximately the same regardless of what car they're on.

You might as well say the prelude VTEC rotors and 11.2" rotors is a bad idea on a CB7 even though many people do it with no problem, and I haven't heard you complain about that.

The pistons may be shifted like you said, depending on if the calipers are leading or trailing edge, but that is usually a case like the vigor (or maybe its legend) calipers where the two pistons are different sizes. Brembo and other similar calipers often have identical sized pistons, so they are more versatile and the mounting position doesn't matter.

I'm not trying to be a jerk, but the setup is obviously working for him. The only real thing that worries me is that the rotor isn't perfectly centered between the caliper, and that it just fits, but is offset a little, which will give a strange braking effect. Half the caliper will clamp first, then the other half.

[Law Grandeur]

he could always film a brake test with markers

[jimy]

Nice setup... Does the rotor sit far enough into the pistons where it grabs the whole rotor?