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Author Topic: Rattlecan on engine - K0 renovation thread  (Read 5656 times)

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Offline PeWe

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Re: Rattlecan on engine
« Reply #50 on: January 30, 2021, 05:58:49 AM »
You should have cleaned inside before paint.
I cleaned with degreaser, mashine dishwasher powder solution in hot water and a brush.
Finalized with pressure washer flushing inside and oil channels.

Keep an eye on the rubber end plug on left side of lower case. It will fly when flushing water in hole for oil pump in case.

If only miscolor, no debris that can come loose, no problem.

Drive chain cleaner spray is  really good for dirt like that. Spray, brush and rinse. Tissues too.
« Last Edit: January 30, 2021, 06:00:53 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 jebon

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Re: Rattlecan on engine
« Reply #51 on: January 30, 2021, 07:23:37 AM »
Quote from: PeWe on January 30, 2021, 05:58:49 AM
You should have cleaned inside before paint.
I cleaned with degreaser, mashine dishwasher powder solution in hot water and a brush.
Finalized with pressure washer flushing inside and oil channels.

Keep an eye on the rubber end plug on left side of lower case. It will fly when flushing water in hole for oil pump in case.

If only miscolor, no debris that can come loose, no problem.

Drive chain cleaner spray is  really good for dirt like that. Spray, brush and rinse. Tissues too.

Thanks, I know ;)
I did have it submerged in the bathtub a few times and hit it with degreaser etc. before painting so it was very dry when painting.
It was only now I thought maybe it could be better.

I'm not sure I know which plug you're referring to? I'm pretty sure I have everything out.
Don't you mean the left oil galley plug in the top case?

Btw PeWe. Are you Swedish? I'm in Denmark  ;)
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Offline PeWe

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Re: Rattlecan on engine - K0 renovation thread
« Reply #52 on: January 30, 2021, 08:14:57 AM »
Yes, Sweden. There is only one small rubber plug sitting in the case on shifter side. I saw mine fly when cleaning the cases with my pressure washer. I saw where it landed.
After that bought one when order oil pump restore kit.

Try drive chain cleaner. I ordered Motul Drive chain cleaner by mistake. Mixed it up with lube.

It was the best chemical when cleaning my stock K6 carbs for my K2 build. Old corroded stuff awaw really quick.
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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 PeWe

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Re: Rattlecan on engine - K0 renovation thread
« Reply #53 on: January 31, 2021, 03:28:06 AM »
Here the plug that must not be missing.
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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 jebon

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Re: Rattlecan on engine - K0 renovation thread
« Reply #54 on: March 02, 2021, 04:34:46 PM »
On another note..
My very good friend set this up this evening so we could make the correct grooves in a set of FAG bearings.
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Offline jebon

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Re: Rattlecan on engine - K0 renovation thread
« Reply #55 on: March 03, 2021, 06:13:01 AM »
Quote from: PeWe on January 31, 2021, 03:28:06 AM
Here the plug that must not be missing.

Yeah that plug is missing You wouldn't by any chance know the part number? I looked on CMSNL but I can't find it
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CB750 K0 1971

Offline MauiK3

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Re: Rattlecan on engine - K0 renovation thread
« Reply #56 on: March 03, 2021, 08:15:11 AM »
Great little video, machinist tools are so cool. As a former machinist I miss working with them.
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline PeWe

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Re: Rattlecan on engine - K0 renovation thread
« Reply #57 on: March 03, 2021, 08:19:46 AM »
Rubber plug was earlier sold by Vital Motor Parts. I bought one here with Oil pump restore kit
https://www.ebay.com/str/vitalmotorparts?rt=nc&LH_PrefLoc=0
Ask when open again.

Can be this one. The photo show a very big close-up? It is max 10mm dia.
https://www.cmsnl.com/honda-cb750k6-four-european-direct-sales_model14384/plug-sealing-rub_11209300000/#.YD-0duiYXIU
11209-300-000
Pos 2
https://www.cmsnl.com/honda-cb750k6-four-european-direct-sales_model14384/partslist/E14.html#.YD-0J-iYXIU
« Last Edit: March 03, 2021, 08:41:57 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 jebon

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Re: Rattlecan on engine - K0 renovation thread
« Reply #58 on: March 10, 2021, 01:56:31 PM »
I'm about to button up.
Am I not correct that all these oil seals go OUTSIDE the engine case?
.. and the one on the far right is behind the rotor which I did not remove
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CB750 K0 1971

Offline bryanj

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Re: Rattlecan on engine - K0 renovation thread
« Reply #59 on: March 10, 2021, 03:12:57 PM »
There is no seal behind the rotor but there is one behind the points
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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).

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Offline jebon

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Re: Rattlecan on engine - K0 renovation thread
« Reply #60 on: March 10, 2021, 10:38:51 PM »
Quote from: bryanj on March 10, 2021, 03:12:57 PM
There is no seal behind the rotor but there is one behind the points
I'm pretty sure the seal on the right is #17 here in the starter cog, right?
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Offline bryanj

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Re: Rattlecan on engine - K0 renovation thread
« Reply #61 on: March 10, 2021, 11:41:44 PM »
Never ever changed one of those so cant comment
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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: Rattlecan on engine - K0 renovation thread
« Reply #62 on: March 11, 2021, 12:14:22 AM »
Item 17 is an oil seal. Included in the oil seal kits with 7 seals.

I replaced when I had the alternator rotor off.
Important to see (feel) which way the lips are facing before removal so the new seal will be flipped right.
Seal keeps the oil away. Lips aims against the area with oil.

Do not trust the outer look of an oil seal, they can look different. It is the direction of the sealing lip(s) that counts.
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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 jebon

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Re: Rattlecan on engine - K0 renovation thread
« Reply #63 on: March 11, 2021, 12:56:33 AM »
Quote from: PeWe on March 11, 2021, 12:14:22 AM
Item 17 is an oil seal. Included in the oil seal kits with 7 seals.

I replaced when I had the alternator rotor off.
Important to see (feel) which way the lips are facing before removal so the new seal will be flipped right.
Seal keeps the oil away. Lips aims against the area with oil.

Do not trust the outer look of an oil seal, they can look different. It is the direction of the sealing lip(s) that counts.
Thanks. I just wanted to make sure that I can close the cases. This seal will be changed later. I don't have the tools to pull the rotor.
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CB750 K0 1971

Offline Brownc567

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Re: Rattlecan on engine
« Reply #64 on: March 26, 2021, 02:31:09 PM »
Quote from: Kelly E on November 22, 2020, 08:49:50 PM
Quote from: BenelliSEI on November 22, 2020, 06:24:04 PM
Do it all the time. Armourcoat 1615 Aluminum engine paint, using their primer. It’s DAYS of prep work for a really good finish.

It takes a lot of time depending on what outcome you want. On my 550 I hand filed and smoothed every fin on the motor. I don't keep track of the time, I just turn on the music and work. ;D This is Duplicolor alumiinium engine paint and primer with Seymour MRO black.

That is one of the cleanest motors i have seen. Well Done!
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