Master Cylinder Rod Keeps Bending

[Proximity Motorsport]

Hey,

A mate of mine just purchased an r32 4 door GTST. Its got 409RWHP so it has a pretty heavy clutch in it, and it does feel rather heavy to the foot. It also has a nismo slave cylinder.

Now the problem is, after driving about 1500km over a few weeks of owning the car, the clutch all of a sudden went spongy and stopped working, so he had a look and the rod the comes out of the back of the master cylinder and connects to the clutch pedal, via a little u-shape bracket that is threaded onto the rod for adjustment, is actyally bent! The rod is bent where the thread is, and the u-shape bracket is bent too. So he got another one off a mates car, and after driving to Brisbane from Mackay, around 1000km in one day, the clutch did the same thing again, although obviously there wasn't much use of the clutch being on the highway... So anyways, i think its kind of wierd, and just wondering if any of you guys have ever come across a problem of bending master cylinders due to a heavy clutch, or whether there maybe something else wrong in there....

Opinions?

Thanks

[The Dan]

Sounds like he might have a cracked pedal box. This will make the pedal engage at an angle. The pin will bend if it does this too much. 400rwhp is not all that much. A heavy clutch is not really required.

[Proximity Motorsport]

cheers mate. I did tell him to pull the pedal box out and tack weld it together when the master was out, because I had snapped one before, and Im pretty sure the nismo ones are just tacked with a mig instead of spot welding. He said he looked at it and it looked fine, but your probably right. Something has had to have happened. I have never heard of these just breaking.

[Duncan]

actually they commonly break. the spot welds tear out.

nismo even have a nismo-fied one where they added a couple of extra welds to a factory pedal and charge triple the price

[The Dan]

actually they commonly break. the spot welds tear out.

nismo even have a nismo-fied one where they added a couple of extra welds to a factory pedal and charge triple the price

They're only like $110 are they?

[Duncan]

well justjap say 160 retail. still that is some expensive welds

[The Dan]

well justjap say 160 retail. still that is some expensive welds

The price of steel has gone up. I can see how they could justify the cost LMAO!!

[Bl4cK32]

Why do people run heavy clutches? Id rather blow a clutch than rebuild a gearbox...

Look for a new clutch, like an OS twin. Previous owner of my car had some crap heavy single installed, then it popped the clutch box as mentioned. When my motor came out, i threw in the OS twin and its no heavier than a std clutch id say