Most data copied from "Toyota Carina, Celica 1971-74 Autobook" (804).
The 2T engine is a pushrod, overhead valve engine with 4 inline cylinders.
The block is cast iron and the cylinder head is alloy.
Twincam versions (2T-G, 2T-GR, 2T-GEU, 3T-GTE, 4T-GTEU) use twin overhead cams in an alloy head.
All versions of the 2T can use unleaded petrol because all alloy heads have hardened valve seats.
Head gaskets can be shared between all versions (twincam can use gasket goop for timing cover).
Inlet manifold gaskets shared between all single cam versions.
Inlet manifold gaskets shared between all twincam versions.
Inlet manifold gaskets not shared between single cam and twincam versions.
Exhaust manifold gaskets shared between all versions.
Most versions use the same data except for timing.
Some info from Mike (alias Renegades)...
The full production of 2T twincam engines was started in October 1970.
Engines were produced to Toyota special order, with Yamaha supplying the heads initially.
Production run 2T twincam engines can be identified from the engine numbers.
All blocks to have the twin cam head had ID numbers commencing with 8.
Typically a 2T/2T-B engine number would be 0094490 while a 2T-G would be 8038332.
Many 2T-G racing engines went out without block numbers as the blocks were special castings
(extra ribbing for strength, reworked oil passageways).
Similarly the heads would not be numbered either.
More 2T info at www.tassie.net.au/~jar/2tg-info.html
|Engine||T family, 80.0 x 70.0mm = 1407cc,|
|T||super (lead) fuel|
|T-C||uses EGR for low emmisions|
|T-U||uses TTC-C for low emmisions|
|T-D||super (lead) fuel|
|T-B||twin downdraft carbs, super (lead) fuel|
|T-BR||twin downdraft carbs, regular (unleaded) fuel|
|Engine||2T family, 85.0 x 70.0mm = 1588cc,|
|2T||super (lead) fuel|
|2T-C||uses EGR for low emmisions|
|2T-U||uses TTC-C for low emmisions|
|12T||uses TTC-L for low emmisions|
|12T-U||uses TTC-V for low emmisions|
|2T-B||twin downdraft carbs, higher compression|
|2T-BR||twin downdraft carbs, regular (unleaded) fuel|
|2T-G||twin overhead camshafts, twin sidedraft carbs|
|2T-GR||twin overhead camshafts, twin sidedraft carbs, regular (unleaded) fuel|
|2T-GEU||twin overhead camshafts, EFI and TTC-C|
|Engine||3T family, 85.0 x 78.0mm = 1770cc,|
|3T||super (lead) fuel, no emmissions controls|
|3T-C||uses EGR for low emmisions|
|3T-U||uses TTC-C for low emmisions|
|3T-EU||EFI, uses TTC-C for low emmisions|
|13T||uses TTC-L for low emmisions|
|13T-U||uses TTC-V for low emmisions|
|3T-GTE, 3T-GTEU||twin overhead camshafts, twin spark plugs, EFI, CT20 turbo (no intercooler)|
|4T-GTEU||road version, 1791cc, twin overhead camshafts, twin spark plugs, EFI, Toyota turbo|
|4T-GTEU||race version, 2090cc (89.0 x 84.0mm), twin overhead camshafts, twin spark plugs, EFI, KKK turbo|
|Bore x Stroke||85.0x70mm (3.346x2.756")|
|Compression ratio T-U||9.0|
|Compression ratio 2T||8.5|
|Compression ratio 2T-U||9.0|
|Compression ratio 2T-GEU||8.4|
|Compression ratio 12T||8.5|
|Compression ratio 12T-U||9.0|
|Compression ratio 3T-U||9.0|
|Compression ratio 13T||8.5|
|Inlet valve opens||16° BTDC|
|Inlet valve closes||54° ABDC|
|Exhaust valve opens||58° BBDC|
|Exhaust valve closes||12° ATDC|
|Inlet valve clearance - hot||0.204mm (0.008")|
|Inlet valve clearance - cold||0.178mm (0.007")|
|Exhaust valve clearance - hot||0.331mm (0.013")|
|Exhaust valve clearance - cold||0.305mm (0.012")|
|Timing 2T||10° BTDC at 600rpm|
|Timing 2T-C auto||5° BTDC at 650rpm|
|Timing 2T-C manual||5° BTDC at 750rpm|
|Gasket face max deviation||(0.002")|
|Valve seat angle||45°|
|Valve seat width of contact surface||(0.055")|
|Gasket face max deviation||(0.002")|
|Tappet bore diameter||(0.8740"-0.8748")|
|Cylinder bore diameter||(3.346"-3.348")|
|Max wear limit||0.204mm(0.008")|
|Max taper or out of round limit||0.102mm(0.004")|
|Max bore diff between cylinders||0.020mm(0.0004")|
|Standard outside diameter||(3.344"-3.346")|
|Cylinder to piston clearance||(0.0024"-0.0031")|
|piston temp when fitting gudgeon pin||20°C (68°F)|
|Compression ring #1 gap||(0.008"-0.016")|
|Compression ring #2 gap||(0.004"-0.012")|
|Oil control ring gap||(0.004"-0.012")|
|Compression ring #1 groove clearance||(0.0008"-0.0024")|
|Compression ring #2 groove clearance||(0.0008"-0.0024")|
|Oil control ring groove clearance||(0.0008"-0.0024")|
|Gudgeon pin diameter||(0.8661"-0.8665")|
|Bend limit per 100mm (3.94")||(0.002")|
|Twist limit per 100mm (3.94")||(0.002")|
|Big end sideways movement||(0.006"-0.010")|
|Small-end to gudgeon pin clearance||(0.0004"-0.0016")|
|Big-end to gudgeon pin clearance||(0.0008"-0.0020")|
|Taper or out of round of bearing surfaces||(0.0004")|
Last updated 27 Dec 2007