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Author Topic: identification af cams, Part II  (Read 1410 times)

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Offline SunLar

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identification af cams, Part II
« on: April 04, 2016, 02:07:13 PM »
Sorry, deleted the previous thread about id of Action Four / Yoshi Daytona cam.

took these pictures of the cams we have.
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Offline PeWe

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Re: identification af cams, Part II
« Reply #1 on: April 04, 2016, 11:21:06 PM »
"K134" is an Action Fours SS-1. 100% sure as we stated in the other thread, now deleted.
Here is a photo of mine mine that I still have the receipt for. The cam docs from Action Fours followed that cam when I bought it winter 1983-84. I scanned them. I have also an Action Fours square shaped sticker, still not used. You do not get the sticker with the cam?  ;D

It is interesting to see the base circle too, not only the lobe. Some cams look like the lift is not that high, but when measure them they have higher lift due to the lower base circle (opposite side of the lobe).
« Last Edit: April 05, 2016, 03:04:33 AM by PeWe »
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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 SunLar

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Re: identification af cams, Part II
« Reply #2 on: April 09, 2016, 06:41:28 AM »
Quote from: PeWe on April 04, 2016, 11:21:06 PM
"K134" is an Action Fours SS-1. 100% sure as we stated in the other thread, now deleted.
Here is a photo of mine mine that I still have the receipt for. The cam docs from Action Fours followed that cam when I bought it winter 1983-84. I scanned them. I have also an Action Fours square shaped sticker, still not used. You do not get the sticker with the cam?  ;D

It is interesting to see the base circle too, not only the lobe. Some cams look like the lift is not that high, but when measure them they have higher lift due to the lower base circle (opposite side of the lobe).

Hi Per
Thanks for posting the sheets again.
No unfortunately I didn't get the sticker
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Offline PeWe

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Re: identification af cams, Part II
« Reply #3 on: April 09, 2016, 07:32:23 AM »
Cam sprocket with oval holes. Most of my cams or maybe all of them, bolted a little bit at the advanced direction. More to the right if seen from ign side.
IN 22/55, EX 56/24 @ 1mm lift.

Do not forget to lock the bolts when ready with timing. Remove bolt one by one, clean bolt and cam threads with acetone and use Loctite blue (medium strenghth) and tighten the bolt. I think 15-17Nm.
See photos with 2 of my cams. Both have similar position to the advanced position. Note! Both cams were not advanced in numbers, SS-1 could have been more advanced, like 1-2 degrees.
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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 SunLar

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Re: identification af cams, Part II
« Reply #4 on: April 09, 2016, 08:30:28 AM »
Ok thanks, i will have that in mind.  Have installed a APE adjustable cam sprocket.


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