i am going to be making a braided hose for a turbo feed for a t3 turbo using aeroquip hose and fittings.

can anyone tell me the best bore to use for the hose is it -3 or -4? and also what thread is the fitting into a bailey turbo oil feed filter and also a ford CVH/zetec oil pressure switch as i will be using a hole where one of the plugs for the oil way go and that uses the same thread as the oil pressure switch.

 

bump

 

Use -4, Think the bailey filters are 1/8 NPT. Male one end female the other.

Not sure on the other size your after.

 

thats brilliant thanks for that. managed to find the thread size of the block end by using the burton cat and looking at preasure switches, its a 1/4NPT thread as its the same as what goes in the block.