Brake Pedal/ Firewall Flex

SPOHN · 01-27-2014, 11:53 AM

Being my car is completely stripped. It's nice to know that when getting on the brake pedal the firewall flexes. Is it to much to ask from Nissan that they could of reinforce the driver side firewall

martin82 · 01-27-2014, 03:05 PM

Spohn, it just mean's ur braking too much.......... no brakes bro! LOL

cossie1600 · 01-27-2014, 03:47 PM

I agree

BGTV8 · 01-27-2014, 03:47 PM

Quote:

Originally Posted by SPOHN

Being my car is completely stripped. It's nice to know that when getting on the brake pedal the firewall flexes. Is it to much to ask from Nissan that they could of reinforce the driver side firewall

Standard race-prep is to reinforce firewall, OEM's never put enough metal behind pedal mounts.

Remember, most pedal ratio's are 6 or 7 to 1, and even ancient old f4rts like me can manage to leg-press 75-90kg, so Mr Nissan designers need to engineer the firewall to cope with 600kg+ load on the firewall - I don't think so ....

Another simple example of purchasing a road-car and expecting it to survive track duty - not going to happen IMHO.

Only Porsche and some track-specific models from other OEM's will have the proper level of bracing in the firewall to support the pedal box.

I don;t even think about bitching over Nissan's omission - it is a road car and the firewall is plenty strong enough for a roadie - just another cost for the track-day junkie or road-racer to bear.

RB

SPOHN · 01-27-2014, 04:25 PM

^ good way of thinking of it. After this track season is over. I'm stripping this car to the core and building the baddest track beast, longevity, aero package you have ever seen. Done with the BS ABS and all.

Thanks for being the ONLY person with positive constructive criticism comment. Much respect to you only.

Fishey · 01-27-2014, 09:00 PM

You can also add on the the strut brace and stabilize the master cylinder.

synolimit · 01-27-2014, 10:10 PM

Least it doesn't tear. The subis have that problem. Firewall splits at the top and you have to weld and reenforce it.

Rusty · 01-31-2014, 10:31 PM

Sophn, I've seen cars where they have double plated the brake/clutch mount area. Is this what you are planning to do?

Super Werty · 01-31-2014, 11:47 PM

seems like an easy fix with the car completely stripped out

1slow370 · 02-01-2014, 10:57 PM

just do this

synolimit · 02-02-2014, 02:36 AM

Quote:

Originally Posted by 1slow370

just do this
[IMG]

Subis do it too.

1slow370 · 02-02-2014, 02:55 AM

a lot of track cars do it even one without firewall issues because it greatly improves pedal feel under hard braking.

edit:i would only end brace it because when the corner is loaded the strut tower wants to push toward the center of the car so if you brace the master cylinder on the sides you can crack it when cornering, also it is best to have it just touching don't try to load the end of the cylinder with it for the same reason

01-27-2014, 11:53 AM	#1 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	Brake Pedal/ Firewall Flex Being my car is completely stripped. It's nice to know that when getting on the brake pedal the firewall flexes. Is it to much to ask from Nissan that they could of reinforce the driver side firewall __________________

01-27-2014, 04:25 PM	#5 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	^ good way of thinking of it. After this track season is over. I'm stripping this car to the core and building the baddest track beast, longevity, aero package you have ever seen. Done with the BS ABS and all. Thanks for being the ONLY person with positive constructive criticism comment. Much respect to you only. iceman21_23, BGTV8, Rusty and 2 others like this. __________________ Last edited by SPOHN; 01-27-2014 at 04:29 PM.

01-27-2014, 10:10 PM	#7 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Least it doesn't tear. The subis have that problem. Firewall splits at the top and you have to weld and reenforce it. __________________ 13 370z-

01-31-2014, 10:31 PM	#8 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,219 Drives: 2011 Nismo GM 6M Rep Power: 2684438	Sophn, I've seen cars where they have double plated the brake/clutch mount area. Is this what you are planning to do? __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

01-31-2014, 11:47 PM	#9 (permalink)
Super Werty Track Member Join Date: Jul 2013 Location: AZ Posts: 668 Drives: '13 Sport Rep Power: 13	seems like an easy fix with the car completely stripped out __________________ The Build

01-27-2014, 03:05 PM	#2 (permalink)
martin82 A True Z Fanatic Join Date: Nov 2011 Location: los angeles Posts: 2,636 Drives: 12 Nissan 370Z MB M6 Rep Power: 20	Spohn, it just mean's ur braking too much.......... no brakes bro! LOL

01-27-2014, 03:47 PM	#3 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	I agree

01-27-2014, 09:00 PM	#6 (permalink)
Fishey Base Member Join Date: Sep 2012 Location: Lebanon Posts: 159 Drives: Volvo T5-R Rep Power: 13	You can also add on the the strut brace and stabilize the master cylinder.

02-01-2014, 10:57 PM	#10 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	just do this __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

02-02-2014, 02:55 AM	#12 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	a lot of track cars do it even one without firewall issues because it greatly improves pedal feel under hard braking. edit:i would only end brace it because when the corner is loaded the strut tower wants to push toward the center of the car so if you brace the master cylinder on the sides you can crack it when cornering, also it is best to have it just touching don't try to load the end of the cylinder with it for the same reason __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 02-02-2014 at 02:57 AM.

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