370z GTM Stage 2 twin turbo Stock block

Speedy

Thanks man, I was impressed for sure with this car. I'd have run 12.90s, maybe even 12.80s if the track had any prep on it. It kept spinning on the 1-2 shift.

It's the same on the Challengers. The autos are always faster. I'm a decent stick driver and I can be on the track in my 6 speed Challenger with my buddy in his auto, pretty much same mods all the way down to the same wheels and drag radials. He's always nearly 5/10ths faster than me. Modern auto transmissions just shift more efficiently than back in the day.

Well I see the problem there, he didn't use a big enough impact

Man forget all that mess.

indyn

[QUOTE=Mike@GTM;1599892]That's what we've been saying as well. We even have a video of us removing a fused crank pulley in our Stage 2 Supercharger Press Release thread and have touched on the issues that have resulted from harmonics. We've seen the catastrophic results of running an aftermarket lightweight pulley.

Also, while reduction in rotational inertia does help improve engine response, there are other factors to consider as well...like how long you want your engine to last.[/QUOTE]

Mike,

with regards to above response, would it be true for any kind of rotational inertia like the lightweight wheels, lightweight driveshafts (aluminium or Carbon), flywheels, etc?

Nixlimited

Doubtful. What this is getting at more is the loss of the damper on the main pulley in an effort to save weight. That could potentially affect the life of the engine by allowing more vibrations to go unchecked. Lightweight everything else is generally good all the way around.

__________________
Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

Mr.Squeeze

[QUOTE=indyn;1608055]It wouldnt have a effect, the parts that you are speaking of has will not cause damage to a engine.

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

LafitteZ

Yea but your average joe cant shift like that auto or launch like the auto and im pretty sure the auto tranny will take that abuse longer then the 6mt. Thats why I say the auto in this new plateform is very very good.

Speedy

Launching and shifting a manual at the strip is the biggest part of it. Took me a long while to learn to speed shift the Challenger, and going from 2nd to 3rd with my foot to the floor on the throttle still gives me pause at times LOL

Mike@GTM

No, only the crank pulley. That is because the factory pulley is a harmonic damper. The other bits are fine to replace with lightweight versions and won't damage anything.

LafitteZ

Got more balls then me friend. I had a clutch disk explode and put holes in the friggin tranny houseing. I cringe everytime i let off the friggin clutch in a higher rev. Im a big puss when it comes to my 370 man its to god damn expensive to fix. So I typically wont dig race or nail it right at the light or something.

Nixlimited

How many autos have we seen die on here versus 6MTs? I don't think there is any evidence that the 6MT is prone to failure. And no, this is not a comment about whether Auto or 6MT is better generally speaking.

__________________
Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

LafitteZ

Not total failure of the tranny but to the point it needs work yes the auto is holding up better. Considering I'm on my 3rd and a lot of other people are having synchro problems left and right. Shift forks breaking. So as I said the auto seems to take the abuse better. Probably because of the precise shifting of the computer. 6mt are notorious for synchro problems

Reality

You really think so?.. I can see now that you really have a lot to learn.

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//2005 35th SB #81 [tyra] SOLD
//2006 GT PPW SOLD

Reality

Their are some individuals running quadruple WHP #'s with 6mt .. no issues. (z33)
If people are busting shift forks, it's because of User Error.

__________________
//2005 35th SB #81 [tyra] SOLD
//2006 GT PPW SOLD

bullitt5897

running 996 rwhp as of last year on MT trans...

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Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054

W.O.W. 370Z

How many miles have you put on the car since TT? How hard have you been driving it?

bullitt5897

You know the answer to that... The car has seen tons of dyno time and travel around shows. Still finishing up on the build before I give road going perspective on the car. Widebody finishes this week and back to GTM for final touches and then home again.

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Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054