JohnA Posted May 24, 2005 Share Posted May 24, 2005 It's not a secret that I regard turbo-timers as useless relics from the past (of aircooled turbos and pre-synthetic oil era) that can do more harm than good. However, the current Autospeed has a DIY controller for such a device, that at least varies the 'run-on' period according to the driving conditions. This way it cannot do much harm. If your car is also driven by a wife/girlfriend/whatever then this one might be a good idea. Myself I'll stick to frequent changes of synthetic oil and common sense after full boost runs. Link to comment Share on other sites More sharing options...
Elliot Posted May 24, 2005 Share Posted May 24, 2005 I've always used the one on the car (Clifford alarm feature?) why would it do more harm than good? Do you have a link to read up on, or explain quickly? Link to comment Share on other sites More sharing options...
JohnA Posted May 24, 2005 Author Share Posted May 24, 2005 I've seen people start the car from hot, move it a few feet to the driveway, and then let it idle for several minutes to 'cool the turbo' Turbo timers promote this sort of overprotection, which does more harm. Idling a hot engine for ages is not ideal. For example the cams experience max wear and min oil pressure, i.e. accelerated wear. Even the turbo bearing wears more and the oil starts to 'coke'. It starts smoking, too. 2K rpm is preferable really to long idle. But watercooled turbos (like the ones found in the Supra) don't need any of this, because any heat spikes over 120C are absorbed by the water jacket. Synthetic oils don't coke at all at this sort of temps, so the extra idling is unwanted. The only case where it is needed is right after a full boost run -- you should never switch it off then, not unless it has ran off-boost for a couple of minutes (while you're parking for example) Link to comment Share on other sites More sharing options...
eyefi Posted May 24, 2005 Share Posted May 24, 2005 However, the current Autospeed has a DIY controller for such a device, that at least varies the 'run-on' period according to the driving conditions. This way it cannot do much harm. If your car is also driven by a wife/girlfriend/whatever then this one might be a good idea. this is nothing new they nearly all have an auto feature which varies the run on based on revs and time. other than that i'm not going to get into this again Link to comment Share on other sites More sharing options...
JohnA Posted May 24, 2005 Author Share Posted May 24, 2005 Fair enough mate. Link to comment Share on other sites More sharing options...
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