hey guys,

i'm building an engine and need to clean out all the threads using bottoming taps.

can anyone tell me what sizes taps i need for the head bolts, main bearing caps and other holes?

thnx.

 

It's probably cheaper to buy a set then to buy individual ones for specific sizes.

 

yeah i've been trying to find sets like that but without luck...

 

usually with taps your better off with indiv.
i really havn't seen many "sets" maybe a few generic ones

besides taps work in stages.. usually 2.. starter.. finisher.. and some i believe have even 3 stages..
so a set of just some standard sizes would be a lot of pieces. and probably be pretty expensive..

id recommend just buying the sizes you need

to figure out what tap sizes you need go by your desired/required bolt size.

I have provided you a chart that will tell you the size you need (be it that you know the bolt size)

http://www.imperialinc.com/pdf/I_Tap&DieChart.pdf

hope that helps
GL

 

I've had good luck with taps (and other items) from McMaster-Carr. They have all kinds in every size, their prices are reasonable, and they ship FAST. Every order I've placed with them has come the next business day with no extra charge.