if you run mad boost and so forth you can fry your turbo over time by shutting the car off all the time...

Basically a turbo spins in the 100k to 140k rpm's department and uses oil that is pumped through it to create a "bearing" between the shaft and the supports inside of the housings. If you aren't pumping this oil through the turbo you can end up with that shaft hitting the metal underneath of it or so forth and wearing out the turbo. Over time the repeated shutting off of the turbo while it is spinning at high rates will wear it down and ruin the shaft, parts of the turbo, or cause something to break at some point. So basically if you let the car idle for a minute or so each time you'll avoid this issue and the turbo will last a long time. That's why people like turbo timers. But if you are responsible and pay attention you can do it yourself. Also if you just stay out of positive boost for the last few minutes of your drive usually that can be pretty much sufficient to keep the turbo alive.

 

ahh sounds awesome steve - that is prtty much what i was thinking. And by positive boost do you mean like high rpms or just anytthing that will spin the turbo, like 2K plus?

 

what I mean is positive boost . LOL.. your engine runs in vaccuum pretty much all the time as a NA engine. At most you get to just about 0 for pressure at WOT. With a turbo you'll run from anywhere around 20" hg vacuum at idle to however many psi you hit with your settings. So positive boost is anywhere from 0 psi/0" Hg on up to your max boost. But it does more or less correspond to "how much" the turbo is spinning.

 

at idle im about 18 in vacuum.

 

My Mp3 is about 18-22" Hg depending on the day more or less.

 

I'm about 18" on startup and about 23" once the cars warmed up.

 

thanks for trying to explain it steve - but im still lost. haha, but it all makes sense some what.

 

I dunno about that...... in that video..............that yellow Lancer was getting ripped apart!.........smoked by car lengths at a time! (though i see alot of v6's n V8's in the vid) the integra opened a new *** on rrm's car

 

ya it did seemed to get smoked, but still it ran 12 seconds i think they said, which isnt bad at all for a lancer

 

that was a turbo integ, and it was alot closer than it looked. the angle is bad. and yes the yellow car was runnin 12.9 in some of those videos.

 

whoa 12.9 damn! rock on RRM!

 

A lot of those runs were mid 13s. We showed you bad runs we had too! Traction was our issue. We got killed off the line most of the time. Even the 12.9 run sucked cause of bad launches and poor tracion. We could have just showed you the highlights but we wanted to show the GOOD,BAD and the UGLY! hahaha!

ROAD/RACE

 

No Car will win every race.. so on that note.............

PROPS to RRM for "Keeping it real" so to speak i could see that you had 2 much of a burn out at the line... ur lancer does haul ***!!


p.s one car in that vid caught my attention.. That white beetle... Itlooked amazingly fast off the line.. do you guys remember his time by any chance??

 

Interesting

My response was to the previous poster who seemed to imply the turbo was a a lighter arrangement. I was putting forward the point the S/C may not be any heavier. And about the huge mother of a shaft.....our systems don't have huge mother shafts, but I guess some cumbersome ones do!

Superchargers have varying degrees of parasitism as do turbos, all depends on blower and setup or turbo and setup. There are supercharger systems with less loss, in the order of only 8- 10%. Nothing too monstrous about that! The effort to power a turbo will be close enough to that.


The amount of power on a turboed IC setup will be more than a supercharged non IC system no doubt...... you are correct. However an intercooled S/C system will even the odds quite nicely, if one system is going to be intercooled in comparison, so must the other. If the system designer knows what they are doing the so called "stall conditions" never show up, they are simply engineered out of existance, and no further problems with MAS.


In this I reckon you are correct completely.......nothing much is added to the lower end and the supercharger amplifies the top end.................Oh boy does it ever what an awesome feeling and its far easier on the motor as well as the drivetrain. High torque lower revs really tests the parts, as in a T/C situation, and I agree lots of people like it like that too.

 

superchargers are great. Don't get me wrong, any FI is wonderful! A lot of people don't realize though that there is much of a difference between the two systems. A lot of people were brought up on the idea that turbo's were horrible and not worth the time and that super was the way to go. That's changed a lot over the last decade or two and turbos have become much more reliable than they used to be. Both systems are great, and certainly provide a considerable amount of power!