Stock/Built Motor - Boost and Durability

[cali yaris]

^ Just curious, unless someone has a failure to report, how does the information shed light on the subject of durability? We should just report stuff that breaks and when.

I'll play anyway, though. I included the grade of gas I use.

Engine: Built (bore/sleeved/rods/pistons/springs/head work)
F/I: Custom turbo kit T28
Boost: 14-24
WHP: 357
Management: AEM EMS
Fuel upgrade: 632cc injectors, Walbro pump, return line, modified Perrin rail, water/meth
Fuel: Pump gas (91)
Miles on Boost: ~2k miles
Length of time: 6 months
Driving style: I hammer it several times a week and race 1-2 times a month.
MISC: rev limit 7300

[xnamerxx]

This thread is entirely useless unless you know why the motor failed. Its nice to say say my stock motor blew up with 200hp but go into no detail as to why that happened. If my stock engine runs leans and seizes or burns a piston it wasn't the engines fault that it happened but say a bad injector or fuel pump or if I toss a rod from running to low on oil but happen to make 160 hp with a turbo its not the turbos fault I ran low on oil so a failure diagnosis is more important than yeah I upped the power and now its dead.

[Yoda]

Originally Posted by xnamerxx

This thread is entirely useless unless you know why the motor failed. Its nice to say say my stock motor blew up with 200hp but go into no detail as to why that happened. If my stock engine runs leans and seizes or burns a piston it wasn't the engines fault that it happened but say a bad injector or fuel pump or if I toss a rod from running to low on oil but happen to make 160 hp with a turbo its not the turbos fault I ran low on oil so a failure diagnosis is more important than yeah I upped the power and now its dead.

I dont think its entirely useless. It covers pretty much questions that people ask often. How much boost,how long you running at that boost, what did you upgrade to run this n that safely. Maybe i thought it was implied that if something breaks that the poster would state what broke and after how many miles n such. Maybe I should up date my first post. Thanks for the input.

[xnamerxx]

Originally Posted by Yoda

I dont think its entirely useless. It covers pretty much questions that people ask often. How much boost,how long you running at that boost, what did you upgrade to run this n that safely. Maybe i thought it was implied that if something breaks that the poster would state what broke and after how many miles n such. Maybe I should up date my first post. Thanks for the input.

Im not trying to be negative but I could run a 50k miles stock and blow the motor because I never changed the oil and complain how unreliable the car is. I don't like this mileage indicator as a result of failure.

Ive seen failure pictures of other users on this board and most of them are pretty easily traced to something else that isn't a direct result of the modification installed.

I mean its simple if your house gets hit by an earthquake and burns down 2 days later it doesn't mean those 2 actions are related. Ive seen lots of examples of people modding theirs cars and doing no correct tuning to go with it and mix that with a very large community of "tooners" who don't know what their doing and a customer unable to tell the difference and you get inaccurate results. I'm not trying to rain on your parade because it would be nice to know I just have a hard time believing that anything useful will come of this thread.

To use myself as an example my car has 75k of extremely hard driving but Ive had no failures to date on the car because there are things I know not to do. As long as you don't let the car run on empty, run on the rev limiter, or run it out of oil your engine should last as long as it was designed to.
Running the car low on gas and driving hard introduces fuel starvation which makes the motor run lean which causes the pistons to get to hot or detonate and in tern either seize or throw a rod because it cant handle the stress being put on it.
Running it on the rev limit causes the fuel system to cut out which can cause the cylinders to run lean and cause detonation.
Oil is self explanatory run low and good by rod bearings. I mean low as in less than full not lower then the indicated line.

[Yoda]

Originally Posted by cali yaris

^ Just curious, unless someone has a failure to report, how does the information shed light on the subject of durability? We should just report stuff that breaks and when.

We always get questions about how much boost can be run on stock engine and how long it will last and so on and so on. This is just to paint a picture of what every1 has done to there car and how long it has been running under those conditions safely. Each of our setups are a bit different so as a new person I would be able browse and gain an idea of how long at very least I can run a specific setup on my engine before I enter the gray area.
Your idea is also good but then we would have no one posting anytime soon I would hope that if something breaks further down the line that the poster would update his post.