Vintage Dirt Bike Q & A
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1980 YZ465G
https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=28&t=746
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Author:  Yamahopper [ Wed Aug 10, 2005 7:38 pm ]
Post subject:  1980 YZ465G

I have a 1980 YZ465 that I race in the Evo class and it is so hard to kick over. One day on E-bay I saw the same bike with a Compression release on it. I e-mailed the guy and asked him who made it and how it worked and he never mailed me back the A-hole. Anyway I was wondering if anyone new how to rig one up on mine. I would greatly appreciate it greatly. Thanks Bill :?: :?:

Please answer by e-mail if posiible mailto:ktm46@sbcglobal.net

Author:  ricortes [ Thu Aug 11, 2005 11:54 am ]
Post subject: 

I have one on my Suzuki 400 that just screws in the extra spark plug hole. I'm not familiar with the Yamaha but if it has a two plug head, that is the way to go.

I've also heard of a design one of the european<???> manufacturers used. They mount the compression release on the side of the cylinder so it only works for ~the first 3/4 of the piston travel up. If you feel like spending a lot of money I will see if I can find the original reference.

Author:  Yamahopper [ Sat Dec 31, 2005 9:30 pm ]
Post subject:  Compression Release

My YZ only has one spark plug hole but thanks.

Author:  expat [ Sun Jan 01, 2006 10:07 pm ]
Post subject: 

My '80 YZ465 kicks over just fine, starts fine too.....hot and cold.

You need to give it a proper swing, putting your weight behind the swing.
prodding it like a 125 will never get you going.

Checking and cleaning your carb could help, paying attention to the pilot curcuit.

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