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Modification = Reliability Issues?

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Old Mar 29, 2009 | 06:38 PM
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Default Modification = Reliability Issues?

As a new Z06 owner, my car is bone stock. Is it possible to do heads, cam, headers, intake, exhaust without affecting reliability of the car? I probably won't mod the car for at least 6 months, as I am still overwhelmed with the car's power stock. Hell, I haven't even broken it in yet, which leaves me to my next question.

The mechanic at my dealership who has been a corvette mechanic for 37 yrs, and has professionally raced corvettes, said that there is no need for a break in period. He said "if it's gonna break, it is gonna break and it is not because you didn't baby it for a few hundred miles." Just looking for feed back on this. So far I haven't exceeded 3500 rpms or 70mph. In addition, I have been varying speeds and no hard breaking, etc.

Thanks in advance!
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Old Mar 29, 2009 | 06:46 PM
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The break in period is always debatable. As far as reliablity goes I can only speak for me....I've had my blower and other mods on for over 3 years and never had a problem with GM reliability.
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Old Mar 29, 2009 | 06:50 PM
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There is a break-in period if the rule book covering the 15 thousand dollar engine in your car says there is a break in period.

Top Fuel dragsters don't break in their engines, but they have millions to **** away on broken parts and they tear their engines down after every run.

having said all that, once you get about 2500 miles on it, go crazy. if you take it to a reputable shop, you won't have any realiabilty issues. you would be surprised at what these things can handle.
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Old Mar 29, 2009 | 07:03 PM
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Originally Posted by warsurfer
There is a break-in period if the rule book covering the 15 thousand dollar engine in your car says there is a break in period.

Top Fuel dragsters don't break in their engines, but they have millions to **** away on broken parts and they tear their engines down after every run.

having said all that, once you get about 2500 miles on it, go crazy. if you take it to a reputable shop, you won't have any realiabilty issues. you would be surprised at what these things can handle.
I wish this break in myth would die. After the firs 250 miles if it isnt broken in something is seriously wrong.
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Old Mar 29, 2009 | 07:22 PM
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Originally Posted by warsurfer
There is a break-in period if the rule book covering the 15 thousand dollar engine in your car says there is a break in period.

Top Fuel dragsters don't break in their engines, but they have millions to **** away on broken parts and they tear their engines down after every run.

having said all that, once you get about 2500 miles on it, go crazy. if you take it to a reputable shop, you won't have any realiabilty issues. you would be surprised at what these things can handle.
2500 miles - that wil take 6 months to a year! I think I will break it in over about 500-750 miles and see what this puppy can do!
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Old Mar 29, 2009 | 07:27 PM
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What they told me at my NCM delivery was the 500 mile break-in period was actually for the transmission rather than the engine.
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Old Mar 29, 2009 | 07:40 PM
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As far as the break in period goes, I bought my car new in Connecticut and drove home 750 miles at interstate speeds and of course the manual says not to do that but the car has never skipped a beat. You know a lot of cars are beat on while at the dealer on test drives or by sales people so as I say the break in period is questionable. BTW...2500 miles is way overkill.
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Old Mar 29, 2009 | 08:03 PM
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Originally Posted by saplumr
As far as the break in period goes, I bought my car new in Connecticut and drove home 750 miles at interstate speeds and of course the manual says not to do that but the car has never skipped a beat. You know a lot of cars are beat on while at the dealer on test drives or by sales people so as I say the break in period is questionable. BTW...2500 miles is way overkill.
When doing a rear end gear swap, tuners reccomend a 500 mile break in to allow the gears to set in.
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Old Mar 29, 2009 | 08:11 PM
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Originally Posted by gatti-man
I wish this break in myth would die. After the firs 250 miles if it isnt broken in something is seriously wrong.
SERIOUSLY... 2500 mile break in?

BTW race cars (not just top fuel. Virtually all forms of racing) don't do break ins not because they "have millions to spare in case something breaks), but rather because a well assembled engine does not require much of a break in period; they start the engine, let it idle for a while, change the oil and it is good to go.
ALL Corvette engines are started and run at the factory...
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Old Mar 29, 2009 | 08:13 PM
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Drivetrain reliability is determined by how the car is driven. If you track the car alot, and beat the crap out of it regularly, then expect high maintanence costs and questionable reliability. But if it's a street driven, modded car, then if you drive in a sane manner, you can probably have the reliability of just about any other hi-perf car. My ProCharged, 550 rwhp 2005 has 40k miles on it, and it looks and drives absolutely like new. And it's got the weak-*** differential!
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Old Mar 29, 2009 | 08:17 PM
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Originally Posted by bigterpsfan
As a new Z06 owner, my car is bone stock. Is it possible to do heads, cam, headers, intake, exhaust without affecting reliability of the car?....
Only one way to find out. The expensive way.

Originally Posted by saplumr
The break in period is always debatable. As far as reliablity goes I can only speak for me....I've had my blower and other mods on for over 3 years and never had a problem with GM reliability.
Interesting. I thought I recalled reading a post or two where the motor in your blown C6 died unexpectedly with less than 10,000 miles on it.

http://forums.corvetteforum.com/1567028340-post54.html

http://forums.corvetteforum.com/c6-t...e-trouble.html

http://forums.corvetteforum.com/c6-t...gine-help.html
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Old Mar 29, 2009 | 08:22 PM
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Mods= minor annoiances. Loud valve train & exhaust. Loss of factory warranty. hotter under hood temps which leads to hotter cabin temps. All in all If you like to go on long distance cruise can be annoying. IMO. If you learn how to drive the car like the guys in the fast list going sub 10's. That is cooler then saying I've got $10g in this pig & wow it's fast. running 10's also...................Joe

Last edited by JT Metal; Mar 29, 2009 at 10:11 PM.
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Old Mar 29, 2009 | 08:24 PM
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Originally Posted by '06 Quicksilver Z06

Interesting. I thought I recalled reading a post or two where the motor in your blown C6 died unexpectedly with less than 10,000 miles on it.

As I thought at the time it was a blown engine. I guess you missed the post where ECS found two injectors stuck open dumping mass amounts of fuel through the engine when they checked the car and they weren't factory injectors. Easy fix and went with more mods while there.
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Old Mar 29, 2009 | 08:55 PM
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Originally Posted by saplumr
As I thought at the time it was a blown engine. I guess you missed the post where ECS found two injectors stuck open dumping mass amounts of fuel through the engine when they checked the car and they weren't factory injectors. Easy fix and went with more mods while there.
Good that you dodged a real problem.
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Old Mar 29, 2009 | 08:59 PM
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Originally Posted by saplumr
As I thought at the time it was a blown engine. I guess you missed the post where ECS found two injectors stuck open dumping mass amounts of fuel through the engine when they checked the car and they weren't factory injectors. Easy fix and went with more mods while there.
what injectors were they
what other mods meth injection
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Old Mar 29, 2009 | 09:02 PM
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Originally Posted by dennis50nj
what injectors were they
They were the 42lb Ford SVT injectors that ATI or the original tuner supplied with the blower almost 3 years ago. ECS switched to Mototron 60's.
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Old Mar 29, 2009 | 09:04 PM
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Originally Posted by saplumr
They were the 42lb Ford SVT injectors that ATI or the original tuner supplied with the blower almost 3 years ago. ECS switched to Mototron 60's.
lucky break at least ECS saved you a ton of money
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To Modification = Reliability Issues?

Old Mar 29, 2009 | 09:13 PM
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Originally Posted by dennis50nj
lucky break at least ECS saved you a ton of money
ECS was already building the forged block while I transported the car to them. To say they easily could have gone through with the engine replacement and not said a word speaks volumes of their honesty. Chris said they could sell the motor with no problem. ECS is first class for me at this point. While the car was there along with the Mototrons I had cats put back on, their 100% meth system, turn up the boost to 10psi and install a Spec twin disc clutch. They removed my FAST and probably should have kept it on.
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Old Mar 29, 2009 | 09:19 PM
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Originally Posted by saplumr
ECS was already building the forged block while I transported the car to them. To say they easily could have gone through with the engine replacement and not said a word speaks volumes of their honesty. Chris said they could sell the motor with no problem. ECS is first class for me at this point. While the car was there along with the Mototrons I had cats put back on, their 100% meth system, turn up the boost to 10psi and install a Spec twin disc clutch. They removed my FAST and probably should have kept it on.
yea there good guys, put it back on
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Old Mar 29, 2009 | 09:27 PM
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Originally Posted by dennis50nj
yea there good guys, put it back on
Chris said they had problems with the FAST breaking under boost. I should have insisted to keep it on but I didn't. With my blower and FAST I had to run a Trailblazer SS TB. Sold it all when I got back.
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