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Discussion History

Inline-Four Engine

Assembly

Liquid-cooled 1000 cc DOHC inline-four producing roughly 200 hp at 13,000 rpm. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Inline-Four Engine parts and their functions

12 top-level parts · 128 parts in total · full bill of materials below
Inline-Four Engine parts diagram: 1 crankcase, 2 crankshaft, 3 forged piston, 4 titanium connecting rod, 5 cylinder head, 6 camshaft, 7 engine valve, 8 6-speed gearbox, 9 slipper clutch, 10 oil seal, 11 ball bearing, 12 coolant system. 128 parts in 12 top-level items.
Inline-Four Engine parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Crankcase 1× Split aluminium case housing the crankshaft, gearbox shafts, and oil galleries.
2 Crankshaft 1× Forged steel crankshaft with four throws and integral counterweights.
3 Forged Piston 4× Forged aluminium
4 Titanium Connecting Rod 4× Titanium connecting rods
5 Cylinder Head 4 parts 1× DOHC head with finger-follower valve actuation and downdraft intake ports.
6 Camshaft 2× Intake and exhaust
7 Engine Valve 16× 4 valves per cylinder
8 6-Speed Gearbox 4 parts 1× 6-speed cassette
9 Slipper Clutch 3 parts 1× Slipper clutch
10 Oil Seal 6× Crank and shaft seals
11 Ball Bearing 8× Crank and gearbox bearings
12 Coolant System 4 parts 1× Radiator and pump

3D model

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Build & assembly graph

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Bill of materials for Inline-Four Engine

12 top-level lines · 27 rows shown · 128 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Crankcase sport-motorcycle-crankcase 1× 1 · part
2 Crankshaft sport-motorcycle-crankshaft 1× 1 · part
3 Forged Piston sport-motorcycle-piston 4× 4 · part
4 Titanium Connecting Rod sport-motorcycle-conrod 4× 4 · part
5 Cylinder Head 4 parts sport-motorcycle-cylinder-head 1× 1 49 assembly
5.1 Valve Spring sport-motorcycle-valve-spring 16× 16 · part
5.2 Finger Follower sport-motorcycle-finger-follower 16× 16 · part
5.3 Valve Guide sport-motorcycle-valve-guide 16× 16 · part
5.4 Head Gasket sport-motorcycle-head-gasket 1× 1 · part
6 Camshaft sport-motorcycle-camshaft 2× 2 · part
7 Engine Valve sport-motorcycle-valve-set 16× 16 · part
8 6-Speed Gearbox 4 parts sport-motorcycle-gearbox 1× 1 14 assembly
8.1 Helical Gear Pair gear-pair 6× 6 · part
8.2 Shift Drum sport-motorcycle-shift-drum 1× 1 · part
8.3 Shift Fork sport-motorcycle-shift-fork 3× 3 · part
8.4 Ball Bearing ball-bearing 4× 4 · part
9 Slipper Clutch 3 parts sport-motorcycle-clutch 1× 1 16 assembly
9.1 Clutch Plate sport-motorcycle-clutch-plate 9× 9 · part
9.2 Clutch Basket sport-motorcycle-clutch-basket 1× 1 · part
9.3 Coil Spring coil-spring 6× 6 · part
10 Oil Seal oil-seal 6× 6 · part
11 Ball Bearing ball-bearing 8× 8 · part
12 Coolant System 4 parts coolant-system 1× 1 7 assembly
12.1 Coolant Pump coolant-pump 1× 1 · part
12.2 Coolant Tank coolant-tank 1× 1 · part
12.3 Coolant Hose coolant-hose 4× 4 · part
12.4 Coolant coolant 1× 1 · part

Where the inline-four engine is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sport Motorcycle

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $500–$50k. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Weichai Power
weichai.com ↗ 		Weifang, CN Diesel & power engines 50 units 12–16 wks
🇮🇳Cummins India
cumminsindia.com ↗ 		Pune, IN Diesel engines 50 units 12–16 wks
🇨🇳Yuchai
yuchai.com ↗ 		Yulin, CN Diesel engines 50 units 12–16 wks
🇮🇳Kirloskar Oil Engines
koel.co.in ↗ 		Pune, IN Diesel & gas engines 50 units 12–16 wks
🇮🇳Ashok Leyland
ashokleyland.com ↗ 		Chennai, IN Engines & commercial vehicles 50 units 12–16 wks