engine and drivetrain piston guide question

[steve k.]

Another engine question. Please take a look at our Piston Guide and let me know if the pecs listed are European only, or do the apply to US spec cars too.

Thanks,

steve k.

[albawhore]

The piston guide matches Haynes 18050

[Jaycen_PNW2002]

(nt)

[Jaycen_PNW2002]

8.5:1 CR U.S. "Spec" piston on 1968-1972 2002's

42.3 mm pin-to-deck, flat top

9.0:1 CR U.S. "Spec" piston used on '72 US-model 2002tii's

9.3:1 CR European 2002TI (twin-carb model)

42.1 pin-to-deck, 5.2mm dome

10:1 CR Early euro-spec 2002tii

42.5 mm pin-to-deck, 4.4 mm dome

E12 Head:

6.9:1 CR Factory "Turbo" pistons (used on 1974 2002 Turbo)

42.0 mm pin-to-deck, 3.7mm dish

8.1:1 CR flat-topped piston (much like the 8.5:1 CR used on the

121 heads) used on '75 US-model 2002's, also on most

US-model 3-liter cars of the era. (keep in mind that

the 2-liter 4-cylinder with the E12 head and 3-liter

6-cylinder cars can interchange pistons)

8.3:1 CR U.S. "Spec" piston on mid 1972-1974 cars

9.0:1 CR U.S. tii pistons

9.5:1 CR European tii pistons

E21 2.0 Head:

8.3:1 CR flat-topped pistons (used on 49-state '76 2002's,

US 2-liter 320i's)

9.3:1 CR domed pistons (used on european 4-cylinder 320i's)

Note: compression ratios given are with a stock head, and zero deck height.