Engine 17.6k 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
40.3k Views
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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
30.6k Views
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Last Post by KZQ 18 Jun 2007 20:45
 
1 Replies

Crack near sparkplug, does this happen to bathtub head?

Category: Engine Topic started Today 05:41, by Andre G.
24 Views
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Last Post by zed1015 Today 07:49
12 Replies

Can't Find My Box of Valve Shims. '81 GPz550

Category: Engine Topic started 30 Oct 2026 17:33, by chopper1963
157 Views
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Last Post by Wookie58 Yesterday 10:07
6 Replies

Drive for now or rebuild the top end?

Category: Engine Topic started 01 Nov 2026 13:25, by LTDflyer1000
103 Views
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Last Post by bound Yesterday 09:44
31 Replies

Head match

Category: Engine Topic started 13 Sep 2026 15:35, by lovethemkzs
845 Views
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Last Post by TexasKZ Yesterday 19:36
7 Replies

Should this oil be used, or recycled?

Category: Engine Topic started 30 Oct 2026 19:03, by daveo
163 Views
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Last Post by TexasKZ 01 Nov 2026 11:41
8 Replies

Cam identification

Category: Engine Topic started 27 Mar 2023 10:16, by Mikaw
2128 Views
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Last Post by Andre G. 01 Nov 2026 07:02
38 Replies

stopping gasket leaks

Category: Engine Topic started 23 Jun 2026 09:30, by dewy0823
2215 Views
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Last Post by dewy0823 28 Oct 2026 13:06
36 Replies

Seized engine kz440

Category: Engine Topic started 25 Apr 2026 12:30, by KZfreely
2268 Views
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Last Post by KZfreely 27 Oct 2026 18:59
5 Replies

GPZ550/615 frame off restoration clutch slipping after power up

Category: Engine Topic started 25 Oct 2026 12:32, by 577nitro
143 Views
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Last Post by Daftrusty 26 Oct 2026 13:04
1 Replies

1982 KZ1000LTD

Category: Engine Topic started 25 Oct 2026 07:32, by rickysnicker
117 Views
bound's Avatar
Last Post by bound 26 Oct 2026 08:13
2 Replies

Inner and outer valve springs clearance

Category: Engine Topic started 25 Oct 2026 05:21, by Sixten
122 Views
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Last Post by Sixten 25 Oct 2026 13:39
29 Replies

Runaway Idle

Category: Engine Topic started 20 Sep 2026 17:43, by Mlodge
885 Views
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Last Post by 577nitro 21 Oct 2026 10:12
57 Replies

Whelp! I found the problem.

Category: Engine Topic started 05 Jan 2026 01:47, by Stereordinary
5246 Views
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Last Post by Stereordinary 18 Oct 2026 09:09
1 Replies

Should I oil the bores or not

Category: Engine Topic started 17 Oct 2026 15:00, by Vietvet
163 Views
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Last Post by zed1015 17 Oct 2026 15:13
27 Replies

Z1 plunger replacement

Category: Engine Topic started 01 Sep 2026 17:37, by 73z1
1279 Views
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Last Post by Rolf1976_KZ900 17 Oct 2026 03:38
11 Replies

questions for fabricating an exhaust

Category: Engine Topic started 12 Oct 2026 09:01, by bound
366 Views
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Last Post by daveo 16 Oct 2026 01:49
5 Replies

selector forks

Category: Engine Topic started 12 Oct 2026 00:21, by Vietvet
165 Views
Injected's Avatar
Last Post by Injected 12 Oct 2026 09:14
4 Replies

Assembling the split cases

Category: Engine Topic started 08 Oct 2026 23:53, by Vietvet
227 Views
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Last Post by Vietvet 10 Oct 2026 14:55
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