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Need a 2.5mm head gasket.. Source?

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Need a 2.5mm head gasket.. Source?

Postby Bofs » Wed Oct 20, 2021 11:47 am

Need a 2.5mm head gasket for a SIL 200 66mm barrel.
Been hunting online to no avail. Checked the usual suspects.
Anyone know where I`d get one?
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Re: Need a 2.5mm head gasket.. Source?

Postby al pushpak » Wed Oct 20, 2021 12:04 pm

Cambridge Lambretta ?
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Re: Need a 2.5mm head gasket.. Source?

Postby hullygully » Wed Oct 20, 2021 12:45 pm

why not use a 1 + 1.5 to get your thickness, on my gori I have to use 2 head gaskets to get my clearances as it's being top n tailed
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Re: Need a 2.5mm head gasket.. Source?

Postby shamrockexpress » Wed Oct 20, 2021 9:00 pm

you could use 6 x .5 mm gaskets and take one off that should get you back to 2.5 :mrgreen: :mrgreen: :lol:
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Re: Need a 2.5mm head gasket.. Source?

Postby Cgt75b » Thu Oct 21, 2021 5:48 am

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Re: Need a 2.5mm head gasket.. Source?

Postby Knowledge » Thu Oct 21, 2021 12:06 pm

Bots, if this is a one off, then why not make your own.

Get a bit of 2.5mm thick Ali and lay an existing gasket on top and overspray with an aerosol paint (ask Birdy for a can, he has loads). When it is dry, take the old gasket off and then remove any alloy from the 2.5mm plate that is painted.

I know you know this stuff, but I put it here just in case this is news to another member.
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Re: Need a 2.5mm head gasket.. Source?

Postby Bofs » Fri Oct 22, 2021 2:44 pm

hullygully wrote:why not use a 1 + 1.5 to get your thickness, on my gori I have to use 2 head gaskets to get my clearances as it's being top n tailed


Could do but rather have one to minimise blow-out. Yours work fine? No problems?
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Re: Need a 2.5mm head gasket.. Source?

Postby Bofs » Fri Oct 22, 2021 2:45 pm

shamrockexpress wrote:you could use 6 x .5 mm gaskets and take one off that should get you back to 2.5 :mrgreen: :mrgreen: :lol:

Dicko :)
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Re: Need a 2.5mm head gasket.. Source?

Postby Bofs » Fri Oct 22, 2021 2:46 pm

Knowledge wrote:Bots, if this is a one off, then why not make your own.

Get a bit of 2.5mm thick Ali and lay an existing gasket on top and overspray with an aerosol paint (ask Birdy for a can, he has loads). When it is dry, take the old gasket off and then remove any alloy from the 2.5mm plate that is painted.

I know you know this stuff, but I put it here just in case this is news to another member.



Yeh last resort, good point though.
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Re: Need a 2.5mm head gasket.. Source?

Postby Bofs » Fri Oct 22, 2021 2:49 pm

Cgt75b wrote:https://www.lambrettaupgrades.co.uk/apps/webstore/products/show/6819783


Spotted those but the idea of a 2.5 step under the head had me worried, mine is 66mm bore. Might only be 2mm around the edge, probably nothing to worry about?
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Re: Need a 2.5mm head gasket.. Source?

Postby Bofs » Fri Oct 22, 2021 4:32 pm

Cgt75b wrote:https://www.lambrettaupgrades.co.uk/apps/webstore/products/show/6819783


Cheers got some ordered, base packers and head gaskets, all on sale too. Base packers only £3.50 and head gaskets only £3.00!! :D
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Re: Need a 2.5mm head gasket.. Source?

Postby hullygully » Mon Oct 25, 2021 8:47 am

Bofs wrote:
hullygully wrote:why not use a 1 + 1.5 to get your thickness, on my gori I have to use 2 head gaskets to get my clearances as it's being top n tailed


Could do but rather have one to minimise blow-out. Yours work fine? No problems?


aye no probs bud, used 2 x rb20 head gaskets plus an alloy base
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