As a further (maybe boring) observation it would appear that here in the UK, if the "T" follows the engin size in the model label (eg 2.4T) then it donates a low pressure turbo, where as the "Turbo / no of cylinders" format donats the high pressure turbo. Is this the same for other parts of the world?
Hey guys, I am new to Volvos but I can tell you that the number has nothing to do with the number of cylinders the engine has. The higher the number, the bigger the turbo is and the more MAX power it will make. If matched to an engine too small in displacement, the turbo takes very long to spool up and there will be turbo lag like in the C70. A small 2.3 liter engine with a T5 (big turbo) has turbo lag. If the same engine had a T2 turbo, it would maybe not have the same MAX power, but you would get your power faster then with a T5. You can buy a T5 turbo seperately for any car. It is not a Volvo term, but rather a turbo term.
I guess Volvo can choose to have a T5 on 5 Cylinder cars only, and etc., but why not have T5 on ALL five Cylinder turbos? The lesser turbo versions on each car are not even listed by Volvo. They are probably all T1 through T2 or not even. Some turbos even start with "k" for example, and are usually not listed. It is just a coincidence that Volvo does this. The turbo itself, not the car, is called a T5 turbo. True, Volvo 5 cylinder engines may have T5 turbos, etc., but it does not mean that a T5 is a turbo that goes only on 5 Cylinder cars. For example, some one who works with me has an Eclipse turbo with a T3 turbo. And that T3 is an upgrade to the stock turbo he had before-no idea what kind it even was. And the engine is 4 cylinders. Hope this clears stuff up.
You guys are reading way too much into this. I worked in the dealership for 5 years on the parts counter. Yes "t" does always designate it as a turbo. The 4 5 or 6 designation has something to do with the output of the turbo, however 4 5 or 6 has nothing to do with the cylinders. When you look at your engine configuration (ie 5254t ot 5234t3) this is where from all my experience is where the T" configuraion originated. It was not however carried on from the origianl 850 T5. The S60R has a T2 in the ingine code and we know the kind of power it has. A few of the past models designated by model as a "T5" actually had T3 enigine codes.
So if you aren't completely confused by now you should be, trust me a lot of what Volvo does will not make sense, they do build a great car though.