Engine Parameters of the TR8

Cylinder block: Aluminium alloy with the axes of the cylinder bores inclined at 45 deg. from the vertical. Fitted with cast iron dry liners.
Crankshaft: Spheroidal graphite iron with integral balance weights. Five main bearings and torsional vibration damper.
Bearings: Main and big ends Steel backed leaded bronze with lead indium overlay.
Pistons: Aluminium alloy, solid skirt. Two compression rings and a scraper ring assembly.
Cylinder Heads: Aluminium alloy gravity die - cast cylinder heads. Cross flow ports. Shallow pot spherical combustion chambers.
Valve seat inserts. Suitable for unleaded fuel.

Description	USA FHC & DHC	UK DHC
Number of cylinders	8	8
Bore of cylinders
mms	88.90	88.90
ins	3.50	3.50
Stroke of Crankshaft
mms	71.12	71.12
ins	2.80	2.80
Engine Capacity
cu cms	3528	3528
cu ins	215	215
Compression Ratio	8.13:1	9.35:1
Maximum Brake Horse Power	Carb 134bhp @ 5000 rev/min	152bhp @ 4750 rev/min
	*EFI 137bhp @ 5000 rev/min	N/A
Maximum Torque	147 lbf.ft @ 3000 rev/min	196 lbf.ft @ 2750 rev/min
Brake Mean Effective Pressure	130 lbs/sqin.	137.3lbs/sqin.
Spark Plugs	N 12 Y or GSP 13	Champion N 12 Y
Spark Plug gap	Carb 0.88mm 0.030ins	0.9mm 0.035ins
	EFI 0.9mm 0.035ins	N/A
Firing Order**	1 8 4 3 6 5 7 2	1 8 4 3 6 5 7 2

* Later revised to 148 bhp @ 5100 rev/min. Torque 180 lbf.ft @ 3250 rev/min.
** Cylinders are numbered from the front of the engine, timing cover end and viewed from the rear to identify banks.
L.H. Bank Nos. 1 3 5 7   R.H Bank Nos. 2 4 6 8.