Engine 17.5k topics

Camshaft, cylinder head, valves, cylinder block, pistons, exhaust, crankshaft, clutch, transmission, engine lubrication system, etc.
3 Replies

anyone familiar with Gemini exhausts?

Category: Engine Topic started 17 Dec 2005 20:57, by MkII
2304 Views
Last Post by gd4now 30 Jan 2026 10:59
6 Replies

Slotted J cam sprockets

Category: Engine Topic started 29 Jan 2026 07:39, by Wookie58
205 Views
Last Post by Wookie58 30 Jan 2026 00:27
20 Replies

Upgrading a KZ400 engine with 440 cylinders and oversize pistons

Category: Engine Topic started 28 Dec 2025 05:36, by quantity
872 Views
Last Post by quantity 28 Jan 2026 15:36
3 Replies

Z1 Kickstart Cover

Category: Engine Topic started 24 Jan 2026 19:38, by JT-NZ
220 Views
Last Post by JT-NZ 25 Jan 2026 23:12
11 Replies

Wiseco 810 piston rings

Category: Engine Topic started 11 Jan 2026 12:36, by turboguzzi
353 Views
Last Post by turboguzzi 25 Jan 2026 01:49
11 Replies

One simple question

Category: Engine Topic started 13 Jan 2026 10:01, by lovethemkzs
265 Views
Last Post by lovethemkzs 16 Jan 2026 11:03
13 Replies

650/750 engine in Z1 frame?

Category: Engine Topic started 12 Jan 2026 08:32, by Sixten
624 Views
Last Post by sf4t7 13 Jan 2026 16:13
15 Replies

Break-in Oil?

Category: Engine Topic started 30 Dec 2025 09:52, by daveo
703 Views
Last Post by daveo 11 Jan 2026 21:43
21 Replies

Whelp! I found the problem.

Category: Engine Topic started 05 Jan 2026 01:47, by Stereordinary
799 Views
Last Post by Daftrusty 10 Jan 2026 15:49
6 Replies

Ignition Timing on 1000J

Category: Engine Topic started 07 Jan 2026 09:08, by MJinCO
283 Views
Last Post by MJinCO 10 Jan 2026 15:01
3 Replies

Choke plunger

Category: Engine Topic started 09 Jan 2026 15:27, by seebold
244 Views
Last Post by zed1015 10 Jan 2026 03:38
22 Replies

How f***** am I?

Category: Engine Topic started 21 Jul 2021 17:51, by 1980 Z1R D3
3631 Views
Last Post by daveo 02 Jan 2026 14:11
3 Replies

Crankshaft oil pump gear

Category: Engine Topic started 31 Dec 2025 19:04, by richard-GPZ
260 Views
Last Post by daveo 01 Jan 2026 09:35
26 Replies

POOR PERFORMANCE

Category: Engine Topic started 26 Dec 2025 10:14, by chuck hahn
1133 Views
Last Post by chuck hahn 29 Dec 2025 17:43
14 Replies

cylinder pressure

Category: Engine Topic started 19 Dec 2025 04:53, by GrzegorzSadoch
866 Views
Last Post by kevski 22 Dec 2025 09:04
58 Replies

Problems installing Andrews x3 camshafts

Category: Engine Topic started 07 Oct 2025 02:40, by v.f.
2869 Views
Last Post by daveo 10 Dec 2025 11:36
8 Replies

Clutch basket rebuild Z1, 900, KZ1000

Category: Engine Topic started 19 Feb 2024 12:40, by Vinsky
1690 Views
Last Post by Vinsky 08 Dec 2025 16:15
3 Replies

ATU - will a KZ650 Twin ignition advance unit fit a KZ440 Ltd

Category: Engine Topic started 03 Dec 2025 09:01, by Utton
302 Views
Last Post by Wookie58 03 Dec 2025 09:55
3 Replies

Cam Cap Locating Pin / Bolt Guide

Category: Engine Topic started 01 Dec 2025 19:11, by Mlodge
426 Views
Last Post by TexasKZ 02 Dec 2025 14:11
5 Replies

Petcock leaking on 1978

Category: Engine Topic started 01 Dec 2025 15:01, by Balut
348 Views
Last Post by asphalt900 02 Dec 2025 00:43
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