Thread size?

[CycleSi]

Does anyone know if the thread size for the oil pressure sender on a EU3 K-series R300 1.8 160 bhp is M12 x 1.5 or 1/8 BSP?

Cheers,

CycleSi

[Gingerbread Man]

Probably no help, but an 1999 EU2 K series is 1/8" BSP I believe.

[RobGT81]

M12 on my 2004 EU3 VVC

[Stiggolas]

Unlikely to be a BSP thread, more a 1/8"NPT. Very similar but not the same

[BertBert]

From my time of buying them, there are definitely two types, but can't tell you just what they are. IIRC the conversation with Caterham Parts went "is it a fine or coarse thread"? Reply "er, fine, I think"! That was for an EU2 K.

Bert

[Gingerbread Man]

What was the answer to this in the end?

[Chrisp5782]

The fitting size depends on the age of the car, on both my 2003 and 2004 cars the thread is M12x1.5mm. (BOTH EU3 ENGINE CARS)

In order to fit a mechanical OPG you would require an M12x1.5 - 1/8 BSP adaptor.

Earlier cars have an M10x1.5mm thread in the sender housing.

[BertBert]

I am sure you are right, but I have distinct memories of them being different pitch threads.
Bert

[Chrisp5782]

BertBert said:

I am sure you are right, but I have distinct memories of them being different pitch threads.
Bert

They might be actually, the M12 is 1.5 for sure but I couldn't be 100% sure about the M10 version.

[anonymous-user]

Chrisp5782 said:

BertBert said:

I am sure you are right, but I have distinct memories of them being different pitch threads.
Bert

They might be actually, the M12 is 1.5 for sure but I couldn't be 100% sure about the M10 version.

An M10 x 1.5 is a metric coarse thread. You'd think a fine thread would be specced for such an application, which could be .75, 1.0 or 1.25 pitch.

Nothing's straightforward is it?