v8 block thread cleaning

[..]

Use a "bottoming tap" it cleans the threads almost to the very bottom of the
cavity.
rap

"Stowe, Ted-SEA" wrote:

> howdy.
>
> what do you guys use to clean up the block head bolt holes ?
> it would be criminal to torque my shiny heads to all that crud down there,
> which I think exits to the water jacket and or the oil pan ? especially with
> the arp thread sealer/lube on them.
>
> I see that snap on has a thread chaser tool set, rtd-42, however I can't
> seem to find a local snap on guy to buy it from.
>
> compressed air would blow that junk down into my engine beyond any doubt.
>
> so if you were doing a valve job, what do you use ?
>
> thanks, Ted Stowe