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82 KZ750-What are these supposed to sound like 18 May 2019 13:48 #804099

Saxobass
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pardon the potentially really stupid question but this is my first UJM and I honestly don't know. What are these things supposed to sound like? Is there a lot of mechanical noise? I've spec'd the valves with new shims and just tensioned the cam chain with a manual APE tensioner. Everything seems to be running fine but it kind of sounds like a sewing machine. Is this normal?

1982 KZ750 H3
-Wiseco 810 kit
-Dyna S pickup
-Dyna coils
-Motogadget M-Unit Blue
-Revival Cycles starter solenoid
-Kz650 Kickstarter
-Progressive fork springs

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82 KZ750-What are these supposed to sound like 18 May 2019 14:23 #804100

SWest Offline Sustaining Member 10 22 2014 Posts: 22410 Thank you received: 2611	Be sure you don't have the cam chain too tight. Steve Z1b1000 1975 Z1b kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882 kzrider.com/forum/2-engine/597654-poser?start=240#704229 The following user(s) said Thank You: Saxobass
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82 KZ750-What are these supposed to sound like 18 May 2019 15:56 #804108

JR Offline Sustaining Member Posts: 2911 Thank you received: 429	The 750/4s have a primary chain which will rattle quite a bit if the carbs are out of sync and a bit less if synced but they are still a noisey air cooled 4 cyclinder UJM and will never sound as quiet as a modern liquid cooled motor. Mine has been rattling away happily for the past 16 years and 50,000 km. 1980 kz750E1, Delkevic exhaust The following user(s) said Thank You: Saxobass
	Please Log in or Create an account to join the conversation. Last edit: by JR.

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82 KZ750-What are these supposed to sound like