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Author Topic: Help!!!! valve lash increasing when warming up  (Read 3105 times)

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Offline bryanj

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Re: Help!!!! valve lash increasing when warming up
« Reply #50 on: August 11, 2020, 08:39:29 AM »
Numbers on cams like you quoted mean nothing
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline PeWe

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Re: Help!!!! valve lash increasing when warming up
« Reply #51 on: August 11, 2020, 09:35:55 AM »
R6, R10 and whatever is stamped is just the mold number when creating the cam billets that is the base before grinding the final shape.

I have seen several K7, K8 cams priced lower than K6 and earlier cams.
My K7-1978 cam work fine. Around $120US for the complete set of cam, sprocket, holders with shafts bolts and rockers a few years ago on eBay, shipped from USA.

Earlier this year
$50US for a very good looking low mile cam with sprocket. It is the shipping that make the total cost high for me.
« Last Edit: August 11, 2020, 10:06:31 PM 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 Jerry Rxman Griffin aka MuthaF'er

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Re: Help!!!! valve lash increasing when warming up
« Reply #52 on: August 11, 2020, 10:43:17 AM »
« Last Edit: August 11, 2020, 10:45:28 AM by Jerry Rxman Griffin aka MuthaF'er »
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline 750caferacer

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Re: Help!!!! valve lash increasing when warming up
« Reply #53 on: August 11, 2020, 12:51:23 PM »
they are high!!!!
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Offline bryanj

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Re: Help!!!! valve lash increasing when warming up
« Reply #54 on: August 11, 2020, 01:59:24 PM »
The last price i remember from Honda at least 15 yrs ago was £110 which would have been $165ish at the time so i would say thats about right for a complicated casting with machining at a low volume
EDIT
Cmsnl still list Honda parts at over $500 EACH
« Last Edit: August 11, 2020, 02:04:23 PM by bryanj »
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline MRieck

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Re: Help!!!! valve lash increasing when warming up
« Reply #55 on: August 11, 2020, 05:28:41 PM »
I have all those parts on hand. You can contact me if you want them.
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