Untitled Document
  • 6th April 2013 – Oil temp, coolant temp & Oil Pressure capillary pipes

    Next job we decided to do was to connect up the oil temperature, coolant temperature and oil pressure gauges. This involved feeding the capillary pipes from the back of the gauges through the front bulk head into the engine bay. We started by laying the dash face down across the transmission tunnel in the cabin just in front of where it will be fitted. We had to cut 3 holes through the bulk head either side of the heater unit big enough to suit the grommets provided with the gauges. We decided to put the oil temp and coolant temp on the drivers side and oil pressure through the passenger side. This way we could run the pipes down either side of the inlet manifold and p-clip above the rocker covers. The grommets supplied stretched to allow the bulbs to pass through and then neatly sit around the thinner capillary pipes afterwards.

    We then ran the oil temp and coolant temp pipes along the top of the rocker covers on the offside and the oil pressure pipe along the rocker cover on the near side and neatly secured them in place using P clips.

    There is an outlet on the front of the engine for the oil pressure switch and the oil pump. The oil temperature then connects to the sump and coolant temp to the top of the inlet manifold. We ran PTFE tape around the thread of the coolant temperature connector when fitting.


  • 31st May 2012 – Water temp gauge & heater outlet union

    We look at fitting the water temperature gauge and heater matrix pipes but before we could do this we needed to get some new unions in order to fit them.

    The problem we had with the water temperature gauge was that the original part that came with the coolant temp gauge (the silver adapter in the picture) was to small for the thread in the inlet manifold which was 5/8 BST (British Standard pipe Thread). Mark asked his mate with a lathe if he could help and he kindly made us up a brass union with the correct thread that now fits the manifold 1/2inch NPT (National Pipe Thread). He did this using 1″ hex brass rod then tapped a 1/2 NPT thread on one side and for the other side they measured the diameter of the original union which was 0.650 diameter x 19TPI (threads per inch). He then used this measurement to screw cut the thread on the lathe.

    The other union we needed was for the heater matrix outlet pipe to connect to the inlet manifold. He made this to match the 16mm stainless steel pipe that we had for the heater matrix pipes. He then tapped a 3/8 NPT thread to the end to enable it to be screwed in the the manifold. While we were at it we got him to make some stainless steel olives to be braised to the heater matrix pipes.