Yet again, another entertaining thread from the Street Racing & Kill Stories section.

 

I know that superchargers were an american development in the early 1900s. I dunno about turbos.

 

I did

 

+1
I saw him do it.

 

You are somewhat right we are talking about cast iron 4 bangers that were built with the sole purpose of running a turbo, also known as the 4G63.

You are making a generalization to "try" and prove a point. It doesn'y work that way. The 4G63 motor will last a very long time with your idea of a lot of boost. This also goes for any motor built with the intention of running boost. I have seen many motors last past 50K on 25PSI and more. Again taking into account maintenance and the FACT that this motor was designed to take that type of abuse puts your "theory" to bed.

 

Evo's mean business!

 

lasting 50,000 miles is nothing to brag about.

 

Only diesels have cast iron cylinder sleeves???

 

Um on a motor with a turbo upgrade, and beating the **** outta it yeah that is.

 

I said they have lasted past 50K and most are still going. Granted they have changed setups and so on but the shortblcok remains the same. I have also seen 500+ AWHP put down on stock untouched 110K+ shortblocks. I never said I was bragging about it nor was that the intention. I was responding to a statement and used HIS referance point as mine to make a vaild point.

I don't see what the bid deal is with some magical mileage number. To me it is just someone trying to find something against high HP 4 clyinder engines. We dont have the cubes to move the air so we just jam more of it in artificaily. So what if it last 5 miles or 80K. How many people on this board making over 500 WHP put at least 15K a year on that car? Probably not may and those that are making more power most likely drive less than 8K a year, so by this 50K magical number it would take a between 5 and 10 years to reach that goal. How many people hold on to a car that long and if they do how many, even if they don't need it, refresh or change shortblocks for various reasons? On top of all this no one get any sort of prize for attaining any milage mark, short of Al Bundy and his Dodge.

 

Dont be hatin on Mopar!

 

Hell no. He went a million miles and won a new Viper.

 

That was an awesome episode!!!!

 

What I don't get is why people think boost level determines longevity. You dont run around at full boost all the time. I would be suprised if I hit full boost more than a few seconds a day if that in daily driving duties. If I was running 24psi on pump, same deal if not less often. A few seconds a month and some track time with a few conts of knock is not going to blow up a purpose built turbo motor.
This is not the 1970's.
Boost only hurts a motor more than NA when you:

1) Get detonation. Number one killer of FI powerplants. More boost means a better chance of this.
2)Overheat or get EGTs above about 1650 degree F, which is when your AL alloy head decides to pull a T1000 on you. Close number two killer. More boost means this is more possible.
3)You exceed the power limits of the stock bottom end or overrev. Of course, this applies to NA cars too. Again, more boost can do this.

BUT

If you can run pump gas with little to no knock and sensible revs without overheating, your not going to be replacing your shortblock all the time, regardless of how much boost you run. You have simply addressed all the possible avenues of destruction besides the stupid operator factor, which is what kills virtually all cars when you really get down to it.
My roomates Talon is running 21psi with 0 knock, 200 degree water temps, great oil pressure, etc, on a half tank of 91 and half tank of 100 pump gas with crap tuning. He could richen it up a bit, tune it better with a proper WB02, and run that on pure 91 no sweat. And thats a 140K miles plus engine. No leaks. No problems. This comes from the guy riding shotgun with the datalogger in hand while we did the pulls. He does not get detonation. Heck, he's on a sidemount IC even. No big FMIC.

Similarly, ask the guys over in the FI boardand they will tell you with proper tuning they last just fine, and thats in a motor desighned for NA. Despite geting 50%-300% more power than stock

 

Great!


Noooooo!!!!!!
25 Pascals.
25 N/M squared.
25 psi.
etc.
=/= 25 pounds. With the correct units I will know it's pressure.

Now you would probably get my frustration. I am a scientist as well. It just infuriates me when people use the incorrect units.

Just messing with ya..

 

I had a tusstle with an almost new Evo not sure if it was a 8 or not they all look alike.

From 20mph coming off a roundabout I was behind him, he floored it and so did I. I went to the inside lane as he was in the outside one. I stayed even with him to about a 100 one car back that were I was when he floored.

I would say the car I raced was less than 2 years old so a 7 or 8 how long has the 8 been out? there onto 9 now! I say he was stock and fast we were about even from a 20mph roll. I didn't have the nitrous bottle turned on I have the 100 jets in there, I know I would have pulled him with the Nitrous.

 

It was probably an 8. They didnt release the 7's over here and the IX's are new to '06. Of the VIII's the '05's are the fastest as they have the best turbo out of the 3 years.

 

Nope. Nice try though.

 

Tell that to Supra's... MVP's car had a 168,000 miles last I heard, daily driven, only been rebuilt once and makes 1089 whp and over 940 lb. ft. of torque. Where are the domestics at pushing that kind of boost?

 

Nowhere. The massive 3 liters of the supra motor makes 1000 with that much boost no sweat.