Slo 283 1 Cars Posted January 24, 2015 What is the standard operating psi on the 2.0 turbo? Searched for ages and cant find the answer Share this post Link to post Share on other sites
Henry Yorke 270 3 Cars Posted January 24, 2015 It is only 0.5 bar IIRC, though I think there might be a small overboost function on the 2.0T a bit like the 405 T16. Not 100% sure as it is a while since I have had a look. Share this post Link to post Share on other sites
jackherer 543 Posted January 24, 2015 I've seen 0.65 bar before. But I think it varies slightly between 406/Xantia engines and XM/605 engines, as does the compression ratio. Share this post Link to post Share on other sites
Slo 283 1 Cars Posted January 24, 2015 (edited) Thanks for the replies guys. Ive just read on a random forum it runs at 9psi Im definately taking that with a pinch of salt Although the same guy, in the same long post actually, mentions that the bog standard turbo will last a couple of months tops if its pushed any more than standard psi and that it heats up the coolant dramatically faster than it already dramatically heats up normally. Edited January 25, 2015 by Slo Share this post Link to post Share on other sites
jackherer 543 Posted January 24, 2015 9 PSI is about 0.62 bar so that's probably about right. I ran one at about 13-14 PSI in an XM for about a year! In the end the rest of the car fell apart but the engine and turbo were still fine. Share this post Link to post Share on other sites
Slo 283 1 Cars Posted January 25, 2015 Aye they are good strong engines and underated in the luxury barges. At 13-14 psi was the difference dramatic from bog standard? Any massive heat rises at that? Share this post Link to post Share on other sites
jackherer 543 Posted January 25, 2015 Subjectively it felt about the same as a 3.0 V6 XM so it was a pretty big difference. Coolant temps were no different, inlet temps I have no idea but the XM does have a massive radiator and intercooler. Share this post Link to post Share on other sites
