31-07-2014, 03:05 PM
It is correct in that there are RFT and RFY variants of the XU10J4 2.0 Mi16/S16 engine.
I'm not 100% sure on the exact difference between the two though.
The only differences in the XU10J4 engines that I know of is that very early ones don't have a windage tray and not all of them have the cam driven vacuum pump. I imagine that it's a mapping difference, possibly for emissions related reasons, but that is just a guess.
Obviously the XU10J4 is quite different to the later XU10J4R and XU10J4RS engines!
I'm not 100% sure on the exact difference between the two though.
The only differences in the XU10J4 engines that I know of is that very early ones don't have a windage tray and not all of them have the cam driven vacuum pump. I imagine that it's a mapping difference, possibly for emissions related reasons, but that is just a guess.
Obviously the XU10J4 is quite different to the later XU10J4R and XU10J4RS engines!
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate