Engine 17.5k topics

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

Cam cover caps

Category: Engine Topic started 07 Feb 2026 06:08, by kznutter
269 Views
Last Post by TexasKZ 08 Feb 2026 11:24
3 Replies

Oil expander ring question

Category: Engine Topic started 06 Feb 2026 13:35, by Tjpgi
195 Views
Last Post by asphalt900 07 Feb 2026 05:04
3 Replies

Porting the Z1 by Joe Hooper

Category: Engine Topic started 02 Feb 2026 14:45, by KZQ
403 Views
Last Post by KZQ 04 Feb 2026 05:50
21 Replies

Piston rings set

Category: Engine Topic started 24 Sep 2025 14:00, by Tjpgi
2257 Views
Last Post by Tjpgi 02 Feb 2026 10:58
7 Replies

Unusual cam wear

Category: Engine Topic started 30 Jan 2026 16:35, by danam
271 Views
Last Post by asphalt900 02 Feb 2026 04:30
3 Replies

Cam chain tensioner play

Category: Engine Topic started 01 Feb 2026 14:22, by danam
224 Views
Last Post by asphalt900 02 Feb 2026 04:18
4 Replies

Z1 Transmission Bearing

Category: Engine Topic started 30 Jan 2026 20:20, by JT-NZ
280 Views
Last Post by Cra-z1 01 Feb 2026 09:33
3 Replies

anyone familiar with Gemini exhausts?

Category: Engine Topic started 17 Dec 2005 20:57, by MkII
2354 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
241 Views
Last Post by Wookie58 30 Jan 2026 00:27
3 Replies

Z1 Kickstart Cover

Category: Engine Topic started 24 Jan 2026 19:38, by JT-NZ
259 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
383 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
305 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
756 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
817 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
946 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
333 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
280 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
3760 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
295 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
1298 Views
Last Post by chuck hahn 29 Dec 2025 17:43
Powered by Kunena Forum