Vacuum hose and radiator header tank hose sizes

[Yash 0]

Hi, hopefully quick question.

 

Car is is a 1.8 16v KR engine.

 

Does anybody know the exact internal diameter of the rubber vacuum hoses that connect to the more rigid plastic hoses and the T's/Y's, the really small ones that go to the ECU/MFA etc? Having looked through the forum I have seen 3.2mm, 3.5mm and 4mm mentioned.

 

Next question, what is the internal diameter of the hose that runs between the top of the radiator header tank and the top of the radiator?

 

I need to order replacements and want to ensure I order the correct size cotton braided hose.

 

thanks

[carrots 1]

I would like to find out the correct size of the vacuum hose

[Yash 0]

Anyone?

[carrots 1]

I still need to know it must make a difference

[kongo127 0]

I replaced with 3.2mm and works fine. You can trim the hose to the right size if you use some maths in order to calculate the exact volume vs. lenght and diameter.