Brake Master Cylinder Stopper

[Greg]

I got a new front strut brace which incorporates a brake master cylinder stopper into its design.

Just thought I would post some feedback on the effectiveness of it.

As soon as I drove the car I could notice the difference in pedal feel. Instead of feeling a spongy/soft, the pedal is nice and hard. Also prior to fitting this I would get a slight vibration while braking. This is gone. I'm don't believe it alters the effectiveness of the brakes, but IMO is worth it just for the pedal feel.

I hope this helps someone

ps I don't know the thread of the bolts used to attach it (first question I had when fitting). some bolts I had lying around fitted

[Duncan]

It is amazing how much the standard firewall moves. Great investment to improve braking feel

[Bl4cK32]

Why doesnt anyone make one for the clutch master cylinder? Ie got a OS twin plate with an r33 box in my r32 and the firewall flexes a fair amount when using the clutch also.

I spose i could make one up....would it have any decent affect anyone think?

[fred_r33]

Does anyone know where I could get one in Brisbane, and how much they're worth?

Thanks,

Ian.

[The Dan]

just make one, it's easy enough

[Greg]

www.nismo.com.au have them for $99. they also sell a strut brace with built in master cylinder stopper (what i got) for $165.

Remember to mention that you are an SAU member to get your 5% discount

I went and got some new bolts (so they were pretty and matched). I took one of my other bolts along that fitted and matched it up to a thread tester which stated that the thread was (metric) 6 x 1.0 mm. The bolts I got were labelled as 6 x 40 mm (ie 40 mm long).

edit: 40mm is too long go about 25-30mm

[Greg]

if a mod views this thread please move it to suspension and braking

[Sydneykid]

You can buy seraparate master cylinder braces, there is a picture of the Tomei one I used in the Stagea section.

[PLYNX]

I agree with Bl4cK32 about the clutch master cylinder I got a custom 1620kg pressure plate and my firewall flexes like hell and I recon that the metal will fatigue and crack. If anybody is making them Im up for one too !

[fred_r33]

That's great, Greg; thanks muchly!

[51jay]

I saw the prototype of the nismo.com.au one, it looked to be better quality than the Japan imports I've seen........a good investment

[Greg]

yeah it is top notch in looks and also feels better than the cusco one i took off

[Trust33]

Ebay au has them f/s.

[Bl4cK32]

OK people....speaking of the clutch master cylinder flexing....today the clutch hanger snapped the spot welds. The two bolts that poke through the firewall, if you look inside the car there is a bracket the clutch pedal hangs off with the studs for the master cylinder going through the wall... It popped the spot weld(s) on the left hand side of the bracket.

It now needs to be taken out and reinforced then put back in. It leaves me worried what will brake next when i put it back. Time to make the clutch stopper....

(ive got a OS twin plate clutch so its by no means a heavy pedal either:))

[Sydneykid]

OK people....speaking of the clutch master cylinder flexing....today the clutch hanger snapped the spot welds. The two bolts that poke through the firewall, if you look inside the car there is a bracket the clutch pedal hangs off with the studs for the master cylinder going through the wall... It popped the spot weld(s) on the left hand side of the bracket.

It now needs to be taken out and reinforced then put back in. It leaves me worried what will brake next when i put it back. Time to make the clutch stopper....

(ive got a OS twin plate clutch so its by no means a heavy pedal either:))

We have had the same thing happen to the R32GTST race car and it has an OS Giken twin plate in it as well:cheers:

[Duncan]

don't cable ties fix this problem Gary

[Bl4cK32]

unfortunatly no. As the bracket curves downward making cableties slip off as you push the pedal in.

I tried cableties, and using some small vice grips to clamp the bracket together. I was stuck at work in the carpark, and had to call a towtruck to get it home

[Sydneykid]

don't cable ties fix this problem Gary

Yep, if you use enough of them and they are big enough. Plus you need to be able to lie upside down with your feet on the driver seat headrest and your head on the brake pedal for half an hour while you do it. All without throwing up. :wassup:

[Sydneykid]

unfortunatly no. As the bracket curves downward making cableties slip off as you push the pedal in.

 

I tried cableties, and using some small vice grips to clamp the bracket together. I was stuck at work in the carpark, and had to call a towtruck to get it home

You have to use one cable tie over the front to hold the others in place. It took me quite a while to work it out, but we were at BATHURST and I wasn't missing out on a run down Conrod.

[Bl4cK32]

You have to use one cable tie over the front to hold the others in place. It took me quite a while to work it out, but we were at BATHURST and I wasn't missing out on a run down Conrod.

See, thats the motivation i didnt have