O=Ring list.

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Re: O=Ring list.

Postby jhovel » Sat Mar 28, 2009 2:36 pm

The question about (M) and (V) in the O-ring list wasn't answered...
'M' stands for 'measured' - the dimensions are not given in the parts lists;
'V' stands for 'Viton' - a more expensive but higher temperatur material than the standard Butyl rubber O-rings. These are only needed in a few locations, but can generally be re-used because they don't seem to deteriorate.

Another point worth making here: many of the O-ring sizes are non-standard. A few are soft conversions from imperial sizes, and I'm currently rebuilding a couple of engines with standard commercial sized O-rings to check if they can be used everywhere (using metric and imperial commercial sizes O-rings). So far, I've been able to substitute, but haven't finished yet.
When I do, I'll publish the 'substitute commercial-sized O-ring list' here as well.

I have managed to successfully substitute the stangely shaped waterpump 'gasket' O-ring with a standard 127mmx3mm O-ring. It fits perfectly and is heald in place and shape by the little tangs in the O-ring groove. One of my waterpumps had a little bit of corrosion on the tangs and they weren't holding, so I used a thin smear of silicone applied with a match in the bottom of the groove to 'glue' the O-ring in place. I pushed the O-ring into the silicone spear and laid a piece of flat steel on top of it while the silicone cured. The waterpump housing could then be handled and installed easily without the O-ring popping out.

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Re: O=Ring list.

Postby Gman » Sat Mar 28, 2009 4:40 pm

Good news about the Water pump O-ring :)
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Re: O=Ring list.

Postby N79CX500 » Sat Jun 05, 2010 7:20 am

Where is a good place to get this assortment of O-rings? Not this exact assortment, but one that has the majority of these listed. Does such an assortment exist?
Also, I would like to find the best quality/heaviest duty O-rings possible for the build. I don't know if there even is a better grade of these O-rings or not, but if so what kind/quality should I get. I am tearing down the engine and trying to do some mild performance mods such as, camshaft grinds, head work, etc. I am having some copper headgaskets made, and am just trying to get the highest quality, most durable parts possible. Even small things such as O-rings can make a huge difference. I would like to find all O-rings that are the "Viton" material if possible.
Thanks very much for your time,
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Re: O=Ring list.

Postby Gman » Sat Jun 05, 2010 10:41 am

If you can find a FULL gasket set they contain most of the O-rings.If not a plumbers suppliers(Trade counter).They are usually the standard Butyl type but they do for all the coolant ways.I've even used a couple as a test on the Oil orifice(The small oil feed in the top of the cylinder) and as I'm just doing some head work I've checked them and they are still ok.Viton(A Dupont Trademark) are better of course as they are designed for higher temps.

Also in the UK David Silvers does a coolant O-ring kit,


But a stated I use a local plumbers supplies.

Also check out the links section for some North American suppliers.

Also last year I bought a cheap O-ring kit,


http://cgi.ebay.co.uk/419PC-METRIC-ORIN ... 3a5b72825a

http://cgi.ebay.com/407pc-O-Ring-Assort ... 439f9541fd

It's been invaluable.I know I'll never use many of them but already I've used several on my bikes.Some are not exact but work for things like the knuckles on the Thermostat transfer pipes etc.
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