minecab

Active Member

• Jan 6, 2019

• #1

can anyone tell me it the heater threads in the head of a 2.5 are the same as a 2 1/4 as I need to fit a heater tap into the head of a 2.5 petrol in my series 2a. thanks

 

L

landyman02

Member

• Jan 8, 2019

• #2

the later heads on 2a and 3's moved over to metric which I am pretty sure it's M16 x 1 pitch which is a really fine thread, had to change the head on my engine because I had a crack in the head and replaced with a newer head, found out the temp sender doesn't fit you have to put in an adapter.
hope this helps.

 

minecab

Active Member

• Jan 8, 2019

• #3

may have to run a piece of copper household pipe with an inline shut off valve in it then thanks

 

R

rob1miles

Well-Known Member

• Jan 8, 2019

• #4

Just looking at this issue for another reason, dedicated heater shutoffs seem to be quite expensive (£10-£30) but Toolstation do a 15mm ball valve for about £5 that fits 15mm copper and looks better made than the heater valves so I'm planning to try one of those in line..

 

minecab

Active Member

• Jan 8, 2019

• #5

that's what I intend to use