Valves and Guides Part Numbers

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Gillcorner
Posts: 1
Joined: Wed Jun 11, 2025 12:10 pm

Valves and Guides Part Numbers

Post by Gillcorner »

Hi All,

I've recently joined the club as I'm restoring a 1947 TEA20

I need to replace 1 inlet valve and the guide on my cylinder head - the valve has a part number 100651 on it, they have a 29.75mm head 108mm long and have a stem that is 7.81mm however I cant seem to find the inlet valves that match either that part number or the dimensions of mine? The exhaust valves seem to match the dimensions for 100652 - which are available online

Much appreciated if anyone can provide any information to assist
Sandy.
Posts: 110
Joined: Sat May 22, 2021 5:19 pm

Re: Valves and Guides Part Numbers

Post by Sandy. »

Hi.
Originally there where 4 version of cylinder heads with different valve head sizes. Your head is version 2 inlet 29.870 to 29.769 and exhaust 26.695 to 26.594, your best option would be to get someone to machine a TEF diesel inlet valve to the size if you cant find the correct size. The exhaust valves are the same size version 2, 3, and 4. it just seams they altered the inlet valve size.
Sandy.
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