Too Much Turbo Timing??

[daren_p]

Is it possible to run your turbo timer for too long? This is what I was thinking. I usually run mine for 1 min which I thought should be enough time for the turbo to cool down properly. If I'm driving hard I usually drive for atleast a couple min more normally then tt it for 1 min. Now I was thingking (I have a 2g) about cw. I remember reading that I believe Magnus said that one of the causes for cw may be the piston squirters. They would stay open at lower pressures like at idle (which they aren not supposed to) and starve the main bearings from oil. So is letting my car idle for 1 min all the time not a good idea? Would 30 sec be better or is this not long enough? What do you guys think?

 

[canucatchdis]

Well what about when your at a stop light and your car is idling? Is that bad for it? Probably not. I think you will be just fine haveing your car idle for as long as you want.

 

[Gigaah]

I agree with last poster. And being in canada, I'm sure you let your car warm up for 5-15 minutes in the winter depending on how far below freezing it is. I know in Wisconsin here I do. extra minute of Turbo time is probably a drop in the bucket compared to that.

 

[daren_p]

I agree with last poster. And being in canada, I'm sure you let your car warm up for 5-15 minutes in the winter depending on how far below freezing it is. I know in Wisconsin here I do. extra minute of Turbo time is probably a drop in the bucket compared to that.

Nope I don't let my car warm up in the winter, it goes into hibernation for 6 months !

 

[BluemeanieTSi]

letting a car idle for long periods of time causes engine bearing wear (not thrust bearing but rod and mains)

 

[Talesin]

I drive mine pretty hard, regardless of if I'm on the freeway, or just headed to the store for milk (speed limit as fast as possible. )... I haven't attached the O2 sensor splice for auto-timing, so I just set mine to idle for three minutes. Also makes a convenient warm-up timer for cold mornings. ^_^

 

[Denji]

unless you hold the clutch in while its turbo timing youll be fine.

 

[Staytuned]

Darren I rarely TT mine during city jaunts ...maybe 20 secs at the most. I usually TT mine a minute and half after highway runs to bring down center cartridge temps.

 

[daren_p]

unless you hold the clutch in while its turbo timing youll be fine.

Hmmm I don't know what I was thinking when I asked this about cw, I'm obviously not holding the clutch in so it won't put pressure on the thrust bearing . I guess the question should be how much do you recommend period? I have the evoIII so its water cooled as well. One min too long, to short, or just about right?

 

[CanadianTSi]

I TT my car for 30 secs, anything more than that is pointless.

 

[Staytuned]

Mine calculates the time based on RPM levels and I think the average time is around 30 secs if I have the timer on. (usually I don't in the city)

 

[CowPimp]

In my opinion, turbo timing is pointless unless you have just been ragging your car. If you're not boosting a lot, then your oil temps are going to be simliar to that of a naturally aspirated car and coking shouldn't be an issue. Otherwise, I think using synthetic oil is a better safeguard against such a thing than turbo timing anyway.

My point is that if you use synthetic oil, then you shouldn't need to do it at all unless you just ran your car really hard. So, 1 minute seems excessive. 30 seconds would probably be enough.

 

[DBR01]

In my opinion, turbo timing is pointless unless you have just been ragging your car. If you're not boosting a lot, then your oil temps are going to be simliar to that of a naturally aspirated car and coking shouldn't be an issue. Otherwise, I think using synthetic oil is a better safeguard against such a thing than turbo timing anyway.

My point is that if you use synthetic oil, then you shouldn't need to do it at all unless you just ran your car really hard. So, 1 minute seems excessive. 30 seconds would probably be enough.

I don't think you guys fully understand the point of a TT. It's not to let your engine oil cool down at all. The main point of a TT is to let your TURBO to cool. Oil serves two purposes, lubricating and cooling. Regardless of your oil temp, if your turbo is hot and you kill the engine, thus stopping the flow of oil, the oil that is trapped inside the turbo may/will "bake" and may/may not cause other problems with your turbo. So you shouldn't look at it as an oil cooling issue. Although many of you will say that the oil temp will ultimately tell you the turbos temp. Yes, this is correct but you must be careful not to mistake one problem with another.

 

[beat90tsi]

If I rag on my car, even just for a short 1-2-3 about a 1/4 mile before I get to my house and I pop the hood when I get there I notice the hotside is red. Obviously I can only see that at night, but it takes a good minute or 2 for it to cool down to where it's not visibly red anymore. I'm not sure if the housing is really that important, but when it is red, I figure the rest of the turbo can't exactly be cold.

 

[daren_p]

Mine calculates the time based on RPM levels and I think the average time is around 30 secs if I have the timer on. (usually I don't in the city)

Ya mine also has the time based on rpm setting, I did use it at first but just switched to manual since rpms don't always tell how hard/easy you've drove the car. I do always run Moble1 synthetic oil.

 

[CowPimp]

I don't think you guys fully understand the point of a TT. It's not to let your engine oil cool down at all. The main point of a TT is to let your TURBO to cool. Oil serves two purposes, lubricating and cooling. Regardless of your oil temp, if your turbo is hot and you kill the engine, thus stopping the flow of oil, the oil that is trapped inside the turbo may/will "bake" and may/may not cause other problems with your turbo. So you shouldn't look at it as an oil cooling issue. Although many of you will say that the oil temp will ultimately tell you the turbos temp. Yes, this is correct but you must be careful not to mistake one problem with another.

Fair enough. However, the temparature of your engine's oil is directly related to the temparature of the parts that it lubricates.

My point still stands. Your turbo is not going to be running excessively hot unless you have been ragging your car. If I just ran my car hard, then I will manually turbo time the car for about 30 seconds before I turn it off. I don't think purchasing a $100 device is necessary if you only beat on your car occasionally as I do.

 

[BluemeanieTSi]

Fair enough. However, the temparature of your engine's oil is directly related to the temparature of the parts that it lubricates.

My point still stands. Your turbo is not going to be running excessively hot unless you have been ragging your car. If I just ran my car hard, then I will manually turbo time the car for about 30 seconds before I turn it off. I don't think purchasing a $100 device is necessary if you only beat on your car occasionally as I do.

yeah but an NA car doesn't get the cylinder temps even at part throttle that a turbo car does, making the exhaust manifold/o2 housing get hotter than an NA cars manifold would...which in turn even after part throttle,non-major boosting your manifolds are still phsyically hotter than an NA car so shutting it off with manifold temps that high will cause oil lines inside the bearing assembly to heat up, the oil has no where to go with the motor off so the oil temp heats up inside the assembly too....it's like running water through a hose in a fire, long as the water is running the temp barely changes and the hose won't melt, soon as you stop running the water the hose melts.