Author Topic: 500K2 engine rebuild. Newbie questions  (Read 3294 times)

Offline Oddjob

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Re: 500K2 engine rebuild. Newbie questions
« Reply #15 on: February 10, 2022, 07:23:43 PM »
Ok here Phil.









I've included the 650 primary chain tensioner in the last 2 pics so you can see what to look for. One bracket is attached to it.
Kids in a the back seat cause accidents.
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Offline murdock

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Re: 500K2 engine rebuild. Newbie questions
« Reply #16 on: February 10, 2022, 07:28:45 PM »

Offline philward

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Re: 500K2 engine rebuild. Newbie questions
« Reply #17 on: February 10, 2022, 08:48:37 PM »
Thanks Ken and Murdock
Current Bikes:-
Honda CB750K2 (1975)
Honda CB500K2 (12/1972)
Honda CR750 Replica (1972)
Honda CB350K0 (1969)
Kawasaki ZZR1100D3 (1995)
Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline murdock

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Re: 500K2 engine rebuild. Newbie questions
« Reply #18 on: February 10, 2022, 09:12:47 PM »
la parte dificil es conseguir el tensor

the hard part is getting the tensioner

Offline Sesman

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Re: 500K2 engine rebuild. Newbie questions
« Reply #19 on: February 11, 2022, 09:43:40 AM »
Indeed it is. I couldn’t readily find a tensioner so decided against the mod.

Offline ebmbiker

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Re: 500K2 engine rebuild. Newbie questions
« Reply #20 on: February 11, 2022, 12:41:44 PM »
Cheers for the drawings and info guys. This really is a very helpful forum!

I’ll try and find a 650 tensioner before I make the bracket. I reckon once everything is replaced in the primary drive it will be good for years to come as I won’t be doing lots of mileage. The one thing that I’m picking up from reading the posts on the forum is regular oil change, and using good quality oil.
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Offline philward

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Re: 500K2 engine rebuild. Newbie questions
« Reply #21 on: February 11, 2022, 12:53:33 PM »
I also think you should consider how your bike will be used and mileage you will be do. My American inport 500k2 (with 11000 miles indicated but not authenticated - so at least that mileage I would guess) had no marks on the cases. I replaced the chain/dampers but I am unlikely to get that mileage on the bike before I snuff it so probably not worth me doing the mod.
There's a few members on here who have done 100,000 plus miles and would be interested to see what their cases are like? I will vary with use and maintenence I suppose
Current Bikes:-
Honda CB750K2 (1975)
Honda CB500K2 (12/1972)
Honda CR750 Replica (1972)
Honda CB350K0 (1969)
Kawasaki ZZR1100D3 (1995)
Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline murdock

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Re: 500K2 engine rebuild. Newbie questions
« Reply #22 on: February 15, 2022, 06:34:43 PM »
 aqui hay un poco mas sobre el tensor

here is a little more about the chain tensioner

                                                                                                                   
                http://www.sohc.co.uk/index.php?topic=11741.0

Offline Oddjob

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Re: 500K2 engine rebuild. Newbie questions
« Reply #23 on: April 06, 2022, 03:28:11 PM »
Old topic I know but I was looking at some old Kwack primary chains today and noticed that the ZX600 I think it was also had a primary chain tensioner fitted that looks a lot like the CB650 one, it may not be identical but it could be made to work I reckon.

https://www.ebay.co.uk/itm/203865918192?hash=item2f775b0af0:g:JYcAAOSwMS9iLNR~

https://www.ebay.co.uk/itm/373566567673?epid=1323120587&hash=item56fa4d74f9:g:ltoAAOSwFFhgkKt2
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline Oddjob

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Re: 500K2 engine rebuild. Newbie questions
« Reply #24 on: May 05, 2022, 06:28:23 PM »
Managed to spot and buy a 650 primary chain tensioner today. It came with a knackered primary chain, of course it may not be knackered but seriously who'd take a chance fitting an old one.

I'll now bung the tensioner and bracket on Ebay unless someone on here wants to buy them both.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

 

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