brake upgrade question. - Infiniti FX Forum : FX35, FX45 and FX50 Forums
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post #1 of 17 (permalink) Old 12-15-2007, 12:24 AM Thread Starter
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brake upgrade question.

I am new here and have been doing some searching but havent really found what i am looking for.

I want to upgrade my rotors and step up to a larger size rotor(lots of room to fill in the 22's) without spending the crazy $$$$ on a full kit with new calipers too. Does anyone know of a kit that has larget rotors and relocation brackets for the stock calipers? I had a kit like this for my Integra years ago and was hopeing that i might find a kit for my FX. thanks in advance guys and gals.

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post #2 of 17 (permalink) Old 12-15-2007, 11:55 AM Thread Starter
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whats up, 12 hours, 19 people looking and yet not a single reply? thats no gool. lol

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post #3 of 17 (permalink) Old 12-15-2007, 12:29 PM
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That's probably cause all 19 have no idea what you're talking about... LOL...

j/k

There have been many brake upgrades done by peeps on this forum... I think most cases they did not upgrade the calipers but you'll hafta wait till one of those guys logs on to see what they did...

Here's a sticky DIY where they used stock calipers to get you started:

https://www.infinitifx.org/phpBB2/viewtopic.php?t=16792


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post #4 of 17 (permalink) Old 12-15-2007, 12:37 PM Thread Starter
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Thanks. well i hpe everyone else logs on soon. HAHA. thanks for the link, i have read that several times even though he didnt do what i was looking to do. i want to find a kit to upgrade from the factory size rotors to say a plus 2 size rotor using the factory calipers. it made a huge difference on my Integra with out breaking the bank.

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post #5 of 17 (permalink) Old 12-15-2007, 03:18 PM
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I'm one of those 19 people who looked but didn't respond. After thinking about your question, here is my response. I have two thoughts:

1) I have never seen a kit that upgrades the size of the rotor but maintains the stock caliper for the FX. 99% sure it doesn't exist. There was talk about retrofitting a new G37 rotor and caliper to the FX (because they are bigger), but I don't think that idea went anywhere.

2) I don't see how making the rotor larger yet using the stock caliper would improve any braking performance. If you are using the stock caliper, and its designed for for stock diameter rotor.......isn't the contact area of the brake pads going to be the same regardless of the size of the rotor?? I don't think you can put larger pads on the stock calipers, but maybe I'm incorrect.

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post #6 of 17 (permalink) Old 12-15-2007, 03:41 PM Thread Starter
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you braking gets better by you have more leverage with larger rotors. kind of like using a breaker bar on a socket. its still the same socket, but now you have more power to move it, or in our case more power to stop it. i did the upgrade on my integra (front and rear) and it took at least 20 feet off my 60-0 stop distance. it makes a BIG difference.

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post #7 of 17 (permalink) Old 12-15-2007, 03:44 PM Thread Starter
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a bigger contact area also makes your brakes better, but its usually easer to put latger rotors on then larger calipers. plus larger rotors can cool off quicker than the stock size bc they have more surface area to disapate the heat through.

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post #8 of 17 (permalink) Old 12-15-2007, 04:24 PM
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Cosmetically I'm sure it would look better.

What bothers me about this post a little though is whether it would impact how well the fronts and rears work together. You wouldn't want things to get unbalanced.



To make a silly eaxample, suppose you had the fronts braking really, really hard and the rears not at all. The vehicle would nose dive and become difficult to handle.

No idea if this is right or not but just thinking out loud I'm not sure I'd want to risk altering the relative stopping force of the fronts to rear or vice versa. This dynamic on the FX is already sort of odd. The rears bite very hard as many of us have noted it's the first vehicle we've owned where the rears wear faster than the fronts.

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post #9 of 17 (permalink) Old 12-15-2007, 05:49 PM Thread Starter
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this is true, you would not want to upset the balance. but by keeping the stock calipers, you still have the same clamping force, you just change the leverage my using a larger rotor. if you upgrade both the front and rear equally, you will also keep the braking balance equal. Like i said, i have done it before, on my car, and several others, and it works wonderfully. all i am looking for is someone that knows someone that makes this type of kit.

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post #10 of 17 (permalink) Old 01-09-2008, 05:27 PM
 
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Brake Tech Info

There is a ton of brake tech info on the link below:
http://www.stoptech.com/tech_info/tech_ ... pers.shtml

Link to FX specific upgrade:
http://www.zeckhausen.com/Infiniti/FX.htm

My $.02
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