Water pump pulley bolt size?

[dave harris]

Ok, so I give up - - - can't seem to find the correct size! Looks like a 3/8 18, but that does not fit. 8X1.25 metric is not correct either.

So, what size do I need? /ubbthreads/images/graemlins/confused.gif

Water pump is the "shorty" hotrod pump from Ford.

thanks

 

[Ron Earp]

5/16 as I recall, got a ton of them in the garage of various sizes. I'll check one here shortly and get back to you.

Wait, scratch that, you said pulley bolt, not housing bolt. I'll still check here in a bit and I think I have them. Same pump, shorty serpentine belt type.

 

[Ron Earp]

I think they are 1/4-20 thread.

 

[flatchat(Chris)]

Most all I've done are 5/16 24 UNF

 

[Jim Dewar]

Ford #F2SE-8505-ca (shorty) use 5/16"x24 (fine thread)I have pump and tap in hand to confirm!

 

[Ron Earp]

Good on you Jim, cause I still haven't gone out to take a look! ;-)

 

[dave harris]

Thanks everyone -

I finally found a tap (5/16 - 24 and ran it thru to clean them up and it works fine now!!

thanks again!