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1st and 3rd series single six engines
#1
Quite a regular
Quite a regular

Richard Sturdy
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We are about to start rebuilding the engine for my 1922 1st series 126 Touring. I have the original engine and have obtained another 1st series engine and a third series engine. We intend to build a near-perfect engine from these three, plus a spare. However, I understand that the 3rd series had a bigger displacement - 288 ci against 268 ci, I believe. Can members advise whether the extra cubic inches were obtained by means of a larger bore alone, or was the stroke also increased? Obviously, this will affect the interchangability of parts from the 1st and 3rd series engines.
Thanks
Tricky Dickie

Posted on: 2015/2/17 11:39
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Re: 1st and 3rd series single six engines
#2
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Owen_Dyneto
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Answered in your other thread where you essentially asked the same question and added some other info. Stroke stayed the same at 5", bore increased from 3-3/8 to 3-1/2.

Posted on: 2015/2/17 12:01
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Re: 1st and 3rd series single six engines
#3
Quite a regular
Quite a regular

Richard Sturdy
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Thank you very much.
Tricky Dickie

Posted on: 2015/2/17 12:22
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