Older Marinised Diesel Engines

Docktor

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30 Dec 2011
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Ireland
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Do all older marinised diesel engines use the same thread size for temperature and pressure senders?

I'm not sure what the thread size is on my 1980 Peugeot DTP-62 (also known as an Indenor DTP-62 or Volvo Penta MD21A) despite trying to read the engraved figures on the collar of the existing senders. Both the original senders are single station senders and I want to change them to dual station senders.

A friend advised me to order 1/8" NPT senders, and use an adapter or bushing kit to fit it to my engine. Is this a good solution?

I have he original owner instruction manual for the engine but the thread size for both senders is not listed within the manual.
 
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