[buster73]

Modifications from stock:
Mahle 9.8:1 compression pistons (95L70) (by PO)
Cylinder heads modified with 935-style “flame ring”seals (by PO).
Carrera chain tensioners (by PO).
Standard steel cylinder head studs (replace 12 Dilavar studs).
Viton o-rings for case through-bolts.
RSR seals for rocker shafts.
Weber carbs (from 2.4, with 34mm venturis+jetting for 3.0).
PMO fuel pressure regulator (from 2.4).
PMO inlet ports (from 2.4, widened and matched to carbs and big port cylinder heads).
6 mm phenolic insulator spacers between cylinder head and inlet (DIY).
K&N air filter (from 2.4).
Seine heat shields for cylinder heads.
Backdated SSI-exhaust 1 3/8“ (from 2.4).
Modified with O2/AFR sensor adapter (Bosch LSU 4.9) for left and right bank.
Stock Dansk muffler (from 2.4).
Programmable 123 ignition distributor (USB).
Clewett Engineering ignition leads.
3-pin Bosch CDI with black Bosch coil (from 2.4).


New parts:
All gaskets and seals.
Inlet and exhaust valves (TRW).
Valve guides, standard size.
Main bearings 1 to 7, standard size (Glyco).
Rod bearings, standard size (Glyco).
Intermediate shaft bearings (Glyco).
Piston rings (Mahle for 9.8:1, 204 hp).
2x Chains (IWIS).
Chain ramps.
Rod bolts and nuts.
Flywheel bolts.
Clutch pilot bearing.
Oil pressure regulator springs.
Oil pressure regulator caps.
Oil return tubes.
Chain tensioner oil lines.
Cam oil restrictor fittings.
Oil pressure sensor (10bar/140 psi to match 2.4 gauge).
Oil pressure switch.
Oil temp. sensor.
Oil cooler hoses.
New front oil cooler (73-style trombone).
Oil cooler feed and return lines (reconditioned used parts).
External oil cooler temperature regulator (reconditioned used part).

Machining and mechanical work:
Through-bolt holes chamfered in RH engine case (DIY).
Rocker shaft holes chamfered for RSR seals (DIY).
Valve guides installed and reamed to spec (DIY).
Valve seats re-cut (DIY).
Valves and valve seats grinded (DIY).
Pistons and rods balanced to +/- 2grams (DIY).
Flywheel resurfaced (machine shop).