Author Topic: O Ring Sizes as per Honda Parts Book  (Read 262 times)

Offline paulbaker1954

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O Ring Sizes as per Honda Parts Book
« on: May 14, 2019, 10:54:30 AM »
I just wanted to check I am right in my assumption.....

 Are O ring dimensions in the Honda parts manual quoted as Inside Diameter and Thickness which is my conclusion
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Offline Nurse Julie

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Re: O Ring Sizes as per Honda Parts Book
« Reply #1 on: May 14, 2019, 11:36:44 AM »
Indeed you are correct Paul. But, the sizes only relate if you are using OEM gaskets. Some after market gaskets are thicker meaning the OEM O ring sizes do not seal.
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Offline paulbaker1954

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Re: O Ring Sizes as per Honda Parts Book
« Reply #2 on: May 14, 2019, 11:43:56 AM »
Indeed you are correct Paul. But, the sizes only relate if you are using OEM gaskets. Some after market gaskets are thicker meaning the OEM O ring sizes do not seal.

Thx Julie any idea what the OEM Head Gasket thickness is?

I should add I got a full gasket set from DS as it was shown as NE on their website but came on a plain card back with no branding so no idea of the manufacturer.

Hopefully head gasket and O rings should be compatible but am now worried -  wondered if any one else had used the DS set recently
« Last Edit: May 14, 2019, 01:17:48 PM by paulbaker1954 »
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Offline Seabeowner

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Re: O Ring Sizes as per Honda Parts Book
« Reply #3 on: May 14, 2019, 03:54:42 PM »
I used a DSS set for 500 about six months ago, but have only competed about 20 miles since..ok so far.
Also bought a complete gasket set for one of my 550s from M&P in their 20% off for £36. It is NE brand, but not used it yet and they don't seem to have a 500 set listed.
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Offline paulbaker1954

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Re: O Ring Sizes as per Honda Parts Book
« Reply #4 on: May 14, 2019, 04:14:48 PM »
I used a DSS set for 500 about six months ago, but have only competed about 20 miles since..ok so far.
Also bought a complete gasket set for one of my 550s from M&P in their 20% off for £36. It is NE brand, but not used it yet and they don't seem to have a 500 set listed.

Did your DSS set come as NE branded or just on a plain card (if you can remember)
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Offline paulbaker1954

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Re: O Ring Sizes as per Honda Parts Book
« Reply #5 on: May 15, 2019, 08:35:22 AM »
OK i measured up the new gasket and o ring from the DSS kit and also measured up the old ones taken off (OK I know these will have been compressed but I was curious)

The pic shows the measurements

1) Does anyone have these measurements for NOS parts

2) Can anyone confirm if the DSS parts are going to be OK


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Offline Oddjob

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Re: O Ring Sizes as per Honda Parts Book
« Reply #6 on: May 15, 2019, 12:12:24 PM »
Delta?
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Offline K2-K6

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Re: O Ring Sizes as per Honda Parts Book
« Reply #7 on: May 15, 2019, 01:31:13 PM »

Offline paulbaker1954

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If you think there's light at the end of the tunnel it's usually another train !!

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Offline Oddjob

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Re: O Ring Sizes as per Honda Parts Book
« Reply #9 on: May 15, 2019, 04:16:26 PM »
Then why not just put difference, we ain't all scientists  :) :)
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Offline Jamesh_sussex

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Re: O Ring Sizes as per Honda Parts Book
« Reply #10 on: May 15, 2019, 10:45:07 PM »
Delta worked for me lol

Offline Oddjob

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Re: O Ring Sizes as per Honda Parts Book
« Reply #11 on: May 20, 2019, 06:50:38 PM »
I have a NP gasket set but it's loose in the packet, there are 2 head gaskets in the packaging which means I've bought one at some time and just slipped it in with the NP ones. One is around 1.36 thick but the other is around 1.58 thick, no idea which is the original NP one but I'd imagine the thicker one.
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