Author Topic: To use or not to use gasket sealant  (Read 1359 times)

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Offline techy5025

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  • 1969 Diecast and Sandcast 750's
To use or not to use gasket sealant
« on: May 28, 2018, 04:39:36 PM »
I have the alternator and shifter covers off of my 750. I didn't realise that the alternator cover didn't have to come off to remove the starter. Before, when I had to replace them, I using gasket sealant. Is this really necessary to stop oil leaks? I ask, because there is a good possibility I will have to remove the starter again, and scraping the old gasket and sealant is a pain.....and it makes the covers harder to remove.

Now that I find that I can buy individual covers....rather than kits...maybe I should just buy more of these covers!  :D


........
1969 750 K0 (Reborn)
1969 Sandcast 750 K0 (Reborn)
2003 CBR600F4I
........

Offline andy750

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Re: To use or not to use gasket sealant
« Reply #1 on: May 28, 2018, 05:03:20 PM »
If you are using the stock gaskets then no gasket sealant should be necessary assuming the surfaces are super clean before using the OEM gasket. Gasket sealant was never used by Honda.
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline beemerbum

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Re: To use or not to use gasket sealant
« Reply #2 on: May 28, 2018, 05:07:13 PM »
+1. The only place gasket sealant is necessary is joining the case halves.

Offline techy5025

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  • 1969 Diecast and Sandcast 750's
Re: To use or not to use gasket sealant
« Reply #3 on: May 28, 2018, 06:00:52 PM »
Thanks for the info! I'm using the Athena gaskets. Everyone seems to like them and they are readily available so hopefully they are OK.

Jim
........
1969 750 K0 (Reborn)
1969 Sandcast 750 K0 (Reborn)
2003 CBR600F4I
........

Offline PeWe

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Re: To use or not to use gasket sealant
« Reply #4 on: May 28, 2018, 09:34:10 PM »
No leaks even with the cheap gaskets. The cheaper gaskets have not as good fitment as Honda's. Some holes do no match. The cheap gaskets are not cheap enough for the lousy quality.
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