T4 is a turbo type.. like B230 has T03 Garret. T4 is a s/v 40 turbo car, s80, etc. You also have T5.
There is no 240 with standard T4 badges.
The B230ET has high pressure turbo, while the ft's have low pressure turbo's. The ET has also intercooler, which I dont know if FT has.
B230ET has 186hp vs. 156(?) in B230FT. The B230FT on the other hand has lower compression and would therefore be easy to tune?
And to the GLT/Turbo mambojambo:
Alot of people think that GLT is a GL + turbo, while it's not like that at all!
L = luxus, DL = DeLuxe, GL = Grand Luxus, GLE = Grand Luxus Executive, GLT = Grand Luxus Touring.
GLT took over for 260 series in 1983, the same year that volvo stopped production of 260/242. They also started naming theire cars 240, instead of 244, 245.
In other words: 260 was the luxury car that volvo offered, but in 83', they changed naming to 240 for all models. That's why they got 240GLT (Grand Luxury Touring) instead of 260.
The GLT had the B230E in Europe. It also had all the luxury equiptment that the 260 had. eg. all electrical, sunroof, etc. Not all GLT's/260's had leather interior.
Also: Differential brake was never standard on regular 240 series, it was up to the buyer to buy it as extra equiptment. I think that in some years, it was standard in the 260's. I dont know if 240GLT had it as standard, or if the buyer had to buy it as extra equiptment.
Also.. GT: The GT was a jubileum model.
Other special models: 240 Classic (I think in 1993?)
The GT had some extra chassis stiffening which one can buy from
www.ipdusa.com (aftermarket) I know I will..
ps. GLT / 260 has 5mm more space between the wheels of the car. (track width is the word?) It also has the big nose hood. (not the same as GL's, it's even bigger)