what can i brake?
breaking into the 10s
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Not True
I have a friend I race w/ who's 2006 6MN only had bolt ons CAI, headers, etc. broke 2 axles, clutch failed & finally dropped a piston . Some happened at the track, some happened off, but obviously the stress of hard driving was no doubt the cause of these failures whether it happened at the time of racing or through weakened condition of the car from the abuse a car takes at the track. This guy is an excellent driver who broke into the 11's w/ bolt ons & 6MN (not easy). Luckily he was covered under warrenty, but in your case w/ the mods you've done no dealer is going to cover any driveline failure. I have a 2005 making 450 rwhp, but w/ street tires, & it has held up to a lot of abuse track & street, but mostly on the street. I remember the 1st time I tracked the car & was very concerned about the abuse a car takes when you track it, particularly after I left. Now does that keep me from going, HELL NO, I bought the car to do performance driving, so if it breaks, I'll fix it & carry on! Have fun w/ your car & more than likely you'll accomplish your goals, not break, & enjoy the hell out of yourself.
Last edited by Mike V.; Sep 14, 2008 at 10:48 AM.
Safety Car
Joined: Dec 2005
Posts: 4,157
Likes: 37
From: North Carolina
St. Jude Donor '07-'08-'09-'11-'12
Pro
Joined: Jan 2005
Posts: 600
Likes: 0
From: APPOMATTOX VIRGINIA
I started off with a 2006 Z51 MN6 with a H/C package with fly cut pistons, 4.10's, 1000 H.P. clutch, 100 nitrous (never used), plus other bolt-ons, and a CCW drag package. This motor put out 462.5 NA RWHP. Now for the breakage. Left side half-shaft, busted rear housing with all internals destroyed, in two weeks another rear failure due to the first set-up being wrong, and a destroyed motor due to failure of a fly-cut piston. This car has only had 8 drag strip runs. My car is currently at Mayhem Motorsports in Raleigh, N.C. having a 402" forged motor built with a DTE rear installed. This motor as planned should have at least 520 NA RWHP and hopefully be more bullet proof than my previous parts.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I started off with a 2006 Z51 MN6 with a H/C package with fly cut pistons, 4.10's, 1000 H.P. clutch, 100 nitrous (never used), plus other bolt-ons, and a CCW drag package. This motor put out 462.5 NA RWHP. Now for the breakage. Left side half-shaft, busted rear housing with all internals destroyed, in two weeks another rear failure due to the first set-up being wrong, and a destroyed motor due to failure of a fly-cut piston. This car has only had 8 drag strip runs. My car is currently at Mayhem Motorsports in Raleigh, N.C. having a 402" forged motor built with a DTE rear installed. This motor as planned should have at least 520 NA RWHP and hopefully be more bullet proof than my previous parts.
I am considering fly cutting and this is the first failure I recall seeing.
Melting Slicks
Joined: May 2006
Posts: 2,891
Likes: 1
From: NJ..."the way I saw it, everyone takes a beating sometimes."
Ok I think we just converted a potential racer into a lifelong waxer. 
Pro
Joined: Jan 2005
Posts: 600
Likes: 0
From: APPOMATTOX VIRGINIA
All that was left in 1 cylinder was the rod and the wrist pin. No evidence of any piston parts were in sight when looking down into the block. The head and block were damaged beyond repair. I was told not to flycut the pistons, but the motorbuilder said it was necessary to alleviate clearance problems. If you're going to this extreme to build a motor, build a forged bottom end with the correct forged pistons. Again, I'm starting out with a new motor and RPM rear components, plus a lot of other exterior mods to include Z06 rear fenders, CCW T10's with 345 PS2's in rear, and after market hood and stripes. Other mods to numerous to mention without a detailed reviev.
Last edited by tluck; Sep 15, 2008 at 02:31 PM. Reason: change
Melting Slicks
Joined: May 2006
Posts: 2,891
Likes: 1
From: NJ..."the way I saw it, everyone takes a beating sometimes."
All that was left in 1 cylinder was the rod and the wrist pin. No evidence of any piston parts were in sight when looking down into the block. The head and block were damaged beyond repair. I was told not to flycut the pistons, but the motorbuilder said it was necessary to alleviate clearance problems. If you're going to this extreme to build a motor, build a forged bottom end with the correct forged pistons. Again, I'm starting out with a new motor and RPM rear components, plus a lot of other exterior mods to include Z06 rear fenders, CCW T10's with 345 PS2's in rear, and after market hood and stripes. Other mods to numerous to mention without a detailed reviev.
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Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
A few weeks ago I did have a local tuner take a look at my car on the dyno but it was more for the purpose of validating the tune in my car than anything else. The funny thing is that my car ended up dyno'ing less this time around than it did last year (410 vs. 417 rwhp) but I'm guessing that's probably due there being no 1:1 ratio in my car as well as different dynos and outside air temps.
Melting Slicks
Joined: May 2006
Posts: 2,891
Likes: 1
From: NJ..."the way I saw it, everyone takes a beating sometimes."
Surprisingly enough, up until very recently my car hadn't seen any dyno tuning and I was able to hit my 11.21 without it.
A few weeks ago I did have a local tuner take a look at my car on the dyno but it was more for the purpose of validating the tune in my car than anything else. The funny thing is that my car ended up dyno'ing less this time around than it did last year (410 vs. 417 rwhp) but I'm guessing that's probably due there being no 1:1 ratio in my car as well as different dynos and outside air temps.
A few weeks ago I did have a local tuner take a look at my car on the dyno but it was more for the purpose of validating the tune in my car than anything else. The funny thing is that my car ended up dyno'ing less this time around than it did last year (410 vs. 417 rwhp) but I'm guessing that's probably due there being no 1:1 ratio in my car as well as different dynos and outside air temps.
Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
Safety Car
Joined: Sep 2006
Posts: 3,922
Likes: 4
From: Cheektowaga NY
St. Jude Donor '08
Melting Slicks
Joined: May 2006
Posts: 2,891
Likes: 1
From: NJ..."the way I saw it, everyone takes a beating sometimes."
That's it I'm selling my C6 and getting an auto. I've got damn near close to 500rwhp and I'd put money on any of you guys at the track.
me no drive good
me no drive good
Drifting
Joined: Jul 2005
Posts: 1,969
Likes: 8
From: NJ
If you guys knew how much rwhp I have and my best times you would get a good chuckle.
My point wasn't about dyno tunes, just looking at his dyno curve to see where and how it looks. I remember Dave formally from Cartek looking at my curve and saying, "this car will run 10.6". Its because of where the thing hit and how broad the power and torque were. My peak numbers were not very impressive.
You all make another very good point. If you can't get it to the ground you just aren't going to go fast. A powerglide, a 1800 pound car with the right suspension and 450 hp and I will eat your lunch all day
My point wasn't about dyno tunes, just looking at his dyno curve to see where and how it looks. I remember Dave formally from Cartek looking at my curve and saying, "this car will run 10.6". Its because of where the thing hit and how broad the power and torque were. My peak numbers were not very impressive.
You all make another very good point. If you can't get it to the ground you just aren't going to go fast. A powerglide, a 1800 pound car with the right suspension and 450 hp and I will eat your lunch all day