Author Topic: Gasket removal.  (Read 773 times)

Offline Bradders

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Gasket removal.
« on: November 05, 2025, 02:48:56 PM »
Hi all. I have decided to replace the top end gaskets due to a worsening oil leak. I’ve nearly got to the point where I need to remove the base gasket and prepare the surfaces for new gaskets. Was wondering what is the best thing to use? Is it just a gasket scraper and lots of elbow grease?

Online Bryanj

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Re: Gasket removal.
« Reply #1 on: November 05, 2025, 04:42:45 PM »
That plus keep soalking the gasket, wd40 will do.

If you want some O rings for the head gasket to stop a future leak pm me

Offline Bradders

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Re: Gasket removal.
« Reply #2 on: November 05, 2025, 05:30:55 PM »
Hi Bryanj. Thanks for the reply. Will definitely take you up on the offer of new O rings.

Online Bryanj

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Re: Gasket removal.
« Reply #3 on: November 05, 2025, 11:25:33 PM »
PM me your address, they are a bit thicker to compensate for the non asbestos thicker gasket

Offline neat street

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Re: Gasket removal.
« Reply #4 on: November 06, 2025, 08:27:12 AM »
I am afraiid at least from my experience, gasket scraper and elbow grease, did use lots of WD, but that did not seem to do much :-(
CB500 1975
CB750F 1976
KLX250 1983
Lambretta SX200 1979
Mini Mayfair 1984

Offline Bradders

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Re: Gasket removal.
« Reply #5 on: November 06, 2025, 09:02:02 AM »
I am afraiid at least from my experience, gasket scraper and elbow grease, did use lots of WD, but that did not seem to do much :-(
Indeed I am resigning myself to lots of elbow grease, I read somewhere, can’t remember where, that this person spent 10 hours preparing the surfaces!

Offline Bradders

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Re: Gasket removal.
« Reply #6 on: November 06, 2025, 01:13:27 PM »
PM me your address, they are a bit thicker to compensate for the non asbestos thicker gasket
.   PM sent Bryan.

Offline JezzaPeach

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Re: Gasket removal.
« Reply #7 on: November 06, 2025, 01:32:00 PM »
A hot air blower and a wood chisel as you can control it better than a Stanley blade and stop it ‘catching’.
1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Offline Rayzerman

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Re: Gasket removal.
« Reply #8 on: November 06, 2025, 01:53:07 PM »
I use Permatex gasket remover, I spray or brush it on (only to where you want it) and leave for up to half hour.  This softens old gaskets.  May need a couple of applications, but scrape off the softer stuff first.

Wondering if you could carefully brush on some paint stripper.......
'72 CB350F, 2010 CBF1000FA

Offline Seabeowner

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Re: Gasket removal.
« Reply #9 on: November 06, 2025, 06:59:16 PM »
I usually soak it with wd40 and use a window scraper that uses standard Stanley blades. Quick to replace and wide enough to slide to the side to cut through stubborn stuff.
Phil
1971  CB500K0  Candy Jade Green or Candy Gold
1973  CB500K1  Candy Ruby Red
1975  CB550F1   Shiny Orange

Offline Bradders

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Re: Gasket removal.
« Reply #10 on: November 06, 2025, 07:09:06 PM »
Thanks for the tips guys. Do you put anything in particular on the surfaces before putting the new gaskets on or is it just a case of making sure the old stuff is off?

Offline taysidedragon

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Re: Gasket removal.
« Reply #11 on: November 06, 2025, 08:16:03 PM »
Thanks for the tips guys. Do you put anything in particular on the surfaces before putting the new gaskets on or is it just a case of making sure the old stuff is off?

Just make sure that the surface is as clean and smooth as you can get it.
Gareth

1977 CB400F
1965 T100SS