Engine 17.5k topics

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

ZX7/Z1 Oil Cooler

Category: Engine Topic started 18 Nov 2015 14:46, by SWest
35.5k Views
Last Post by SWest 28 Feb 2016 16:49
0 Replies

Tech Forum Rules

Category: Engine Topic started 18 Jun 2007 20:45, by KZQ
29.7k Views
Last Post by KZQ 18 Jun 2007 20:45
 
1 Replies

Cam chain tensioner play

Category: Engine Topic started Yesterday 14:22, by danam
9 Views
Last Post by SWest Yesterday 14:51
92 Replies

Top-End Reassembly

Category: Engine Topic started 24 Oct 2025 00:16, by daveo
4475 Views
Last Post by zed1015 Yesterday 12:58
22 Replies

Blown motor

Category: Engine Topic started 28 Jan 2026 06:55, by Larry G
286 Views
Last Post by Larry G Yesterday 12:54
4 Replies

Z1 Transmission Bearing

Category: Engine Topic started 30 Jan 2026 20:20, by JT-NZ
112 Views
Last Post by Cra-z1 Yesterday 09:33
9 Replies

ID me

Category: Engine Topic started 27 Dec 2025 23:18, by Mr. E
355 Views
Last Post by Street Fighter LTD 31 Jan 2026 07:56
5 Replies

Unusual cam wear

Category: Engine Topic started 30 Jan 2026 16:35, by danam
81 Views
Last Post by zed1015 31 Jan 2026 01:52
3 Replies

anyone familiar with Gemini exhausts?

Category: Engine Topic started 17 Dec 2005 20:57, by MkII
2224 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
97 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
644 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
148 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
260 Views
Last Post by turboguzzi 25 Jan 2026 01:49
16 Replies

Cam End Plugs + Stripped Valve Cover Threads

Category: Engine Topic started 05 Jan 2026 15:22, by tobeerortobike
559 Views
Last Post by bry195 23 Jan 2026 17:20
72 Replies

Terrible motor swap idea kz440

Category: Engine Topic started 22 Dec 2025 07:42, by bound
1659 Views
Last Post by Injected 21 Jan 2026 13:58
11 Replies

One simple question

Category: Engine Topic started 13 Jan 2026 10:01, by lovethemkzs
193 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
414 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
474 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
577 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
202 Views
Last Post by MJinCO 10 Jan 2026 15:01
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