Topic: thread & dia. of vacuum gauge ports

[mutt]

I see my friends bike has screws in the inlet manifolds, and the books show threaded tube that goes in these holes for the purpose of hooking up a manometer or vac. gauge.
What do you fellows use? I thought perhaps some brass tube of ? diameter  & a size ? die- or can i find threaded nippels for it? 
thx

[Alan F.]

Z1 has them.   but I'm not sure if you need 5mm or 6mm.
I would think it's 5mm though.

http://www.z1enterprises.com/detail.aspx?ID=3264

http://www.z1enterprises.com/detail.aspx?ID=3263

http://www.z1enterprises.com/detail.aspx?ID=3262

[mutt]

thx, but Im cheap.......if I was seeing a lot of these machines, Id get them, but this will be a one shot deal.
I guess I should remove one, figger out what size it is- metric is a poorly spoken second language, still- figure out what size brass tubing I need from the hobby store....RC plane people use a vast array of small stock-the right size tap from....jeez. Pretty small. Anyhow, thats why I asked......

[Duke McDukiedook]

5mm for Honda