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Author Topic: Post on hd primary chains disappeared  (Read 1968 times)

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Offline T1m32sh1n3

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Post on hd primary chains disappeared
« on: December 21, 2017, 04:26:29 pm »
What happened?
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Offline Cb750 Racer

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Re: Post on hd primary chains disappeared
« Reply #1 on: December 21, 2017, 07:52:55 pm »
Quote from: T1m32sh1n3 on December 21, 2017, 04:26:29 pm
What happened?
I also had a whole build thread disappear but the thread could have just been #$%*  ::) I saw that the website was down last night so they could have backed up the site from a few weeks or a month prior.
« Last Edit: December 21, 2017, 08:01:13 pm by Cb750 Racer »
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Offline Don R

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Re: Post on hd primary chains disappeared
« Reply #2 on: December 21, 2017, 09:12:51 pm »
 10 days were lost, I'd like to see some of the info that was here reposted though.
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Offline PeWe

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Re: Post on hd primary chains disappeared
« Reply #3 on: December 21, 2017, 09:50:46 pm »
This thread cover it rather well
http://forums.sohc4.net/index.php/topic,154183.0.html

Mike mentioned his 98rwhp engine used stock chains
My 836cc 80rwhp w stock chains had 67.5mm slack after around 40.000km, 60% high speed touring
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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline NitroHunter

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Re: Post on hd primary chains disappeared
« Reply #4 on: December 22, 2017, 05:31:19 pm »
Quote from: PeWe on December 21, 2017, 09:50:46 pm
My 836cc 80rwhp w stock chains had 67.5mm slack after around 40.000km
Your Primary chains had HOW MUCH slack?  ::)
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Offline PeWe

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Re: Post on hd primary chains disappeared
« Reply #5 on: December 22, 2017, 11:24:29 pm »
Not the exact slack, but the Honda procedure how to measure it. 65 mm new chains, mine had 67.5. New CCC chains a little bit less than 65 mm.


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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Haybus

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Re: Post on hd primary chains disappeared
« Reply #6 on: December 23, 2017, 03:15:44 pm »
Got my 72 link chains today. Think relying on the existing swage is ok when pressing the pin out and back in. Not sure how much the holes in the plates would plastically deform (probably not much). Or, should additional swage be applied after pressing the old pin back in, or perhaps new pins made that can be swaged after installation?

Alan.
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Offline Ilja

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Re: Post on hd primary chains disappeared
« Reply #7 on: February 20, 2018, 12:10:00 pm »
Quote from: Haybus on December 23, 2017, 03:15:44 pm
Got my 72 link chains today. Think relying on the existing swage is ok when pressing the pin out and back in. Not sure how much the holes in the plates would plastically deform (probably not much). Or, should additional swage be applied after pressing the old pin back in, or perhaps new pins made that can be swaged after installation?

Alan.

I pressed out the pins to remove the 4 extra links, pressed back togheter and mushroomed the end of the pins with a center punch. So far so good in my turbo-powered engine. :-)
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