Installing Water Temp and Presure Gauge

[hudelrob]

Yamaha 2003 130TLBR 2 Stroke

I want to install a water temp and pressure gauge. I notice two bolts on top of the cylinder head on both sides is that where each sensor would be installed and what is the NPT size?

Any recommendation on what sensors and gauges to purchase?

 

[rodbolt]

Re: Installing Water Temp and Presure Gauge

its not NPT.
use an NPT fitting and you can destroy the block.
its a 10mm but I cant remember the pitch so you take it by a parts store and have it checked with a pitch gauge.
or simply buy the temp and pressure kit from yamaha and it fits and is all plug and play.
pressure is tapped from the port bank and temp off the stbd.