R35 Gtr - Dual Exhaust Myth & Spotted Cool Features

[warps]

Well, moving a 50kg lump of a gearbox to the rear will change the weight distribution by around 3-4 % points each way (eg take it from 58:42 to about 55:45). Also, the new engine is all alloy, compared to the RB26 lump which was reknowned for being one seriously heavy piece of hardware.

I didn't say that GTR's aren't nose heavy. I'm just staggered that they achieved such poor weight distribution despite all their efforts to move weight to the back.

[scathing]

Didn't notice the 2 to 1 to 2 layout of the exhaust... maybe we might see straight twin pipe exhaust systems pretty soon... or maybe the underbody layout doesn't allow for seperate pipes? Nissan did say they put a lot of effort into making sure the car was highly aerodynamic.

If its not available as an option, it'll surely be available in the aftermarket sooner rather than later.

That exhaust path is almost identical to the FM platform cars (Z33, V35), although for the FM platform since they're both NA you get better midrange by linking the two exhaust streams into one. Which is why even the Nismo catbacks on these cars still link into a single midpipe.

They paid a lot of time on aero on the FM cars as well (the Z33 has a 0.29 Cd, and while it doesn't run an undercarriage plate like current Porsches they did try and make sure it was as flat as possible) - I don't think there's much difference when the aftermarket guys started running "true dual" exhausts on the cars.

I am really surprised the GT-R doesn't run true dual. I would have thought, at its exhaust gas flow, it would have been mandatory.

[scathing]

EDIT: tread pattern on those tyres are really interesting...

Those tyres are the same as the "semi slicks" the STis have been running for the last few generations.

[scathing]

That has to be a typo. Even the average FWD Avagnary has a better weight distriution than that.

I'm thinking more like 48:52. Surely the Nissan engineers couldn't get the weight distribution so horribly wrong. It would handle worse than a 265 Centura.

That's closer to 50:50 than the FM platform cars, which are 53:47. They still handle alright.

Nissan, with the kudos that the V35 and the Z33 have earned, might have "learnt their lesson" from those cars and continued to make cars with a slight front bias. With AWD traction it doesn't need the weight over the rear tyres for traction like other supercars (most Ferraris, MR or FR, as well as obviously Porsches have a major rear weight bias).

The mentality with the FM weight distribution, apparently, is that when you're not accelerating there's slightly more weight over the front wheels, which gives more traction to your steering tyres, but as you throttle out the weight goes 50:50 which gives you better rear end grip while not unloading the front so much that it starts to lose front traction and start to understeer.

I've found that their theory hasn't been too bad. If you run the same sized tyres front and rear on a Z33, the balance is pretty good for a heavy car using a GT suspension setup. Its hard to say if its better than 50:50, since the only car with that weight distribution that I've gotten to punt around long term is a 318i....which is a nugget.

[R31 Gagz]

Also spotted this, what do you think those hoops either side of the bonnet latch on the underside of the bonnet are??

Im thinking built in bonnet locks, like the aftermarket bonnet pins people put on for high speed racing.

Cheers!

Gagz