1 reply to this topic

[seb79]

hi

i would like to to know what is the right tap for my weber inlet manifold
i need to drill this inlet and then to tape this one. The bolt size is 5/8 unf, but i dunno what is the right tap necessary.

i don't have a gauge in order to know the right tap i need .

can you give the right tap ?

thanks a lot !

[mini13]

do you mean a 5/8 spanner fits the head of the bolt?

I have seen two diferent threads used,

the usual one is threaded 5/8 unf (5/8x 18tpi) and has IIRC an 15/16" bolt head.

the other one I have seen has a smaller bolt head (possibly 5/8) and a thread that I suspect is 3/8 UNF (3/8 x 24 tpi)

anyway here is a handy imperial tap chart too.

http://www.carbidede...ap-standard.htm