Spark Plug thread

[Purple_rob]

Hi all,

Just wondering if anyone knows what the spark plug thread is.

I want to buy a tap to clean the thread on no1 as some tard has started to x thread it at some point.

Planning to do it from the inside when I have the head off one day.

Thanks all

[gtmatt]

buy 1 of these mate ,
http://www.machinemart.co.uk/shop/product/details/cht261-spark-plug-thread-chaser

[Purple_rob]

they look good!, It's the 14mm side isnt it?.

In an ideal world I want to go from the bottom out to ensure I follow the original thread.

Do you think its long enough to cover the whole thread?

[Purple_rob]

Would like to get a proper tap.

Anyone know if M14x1.25 is corrent?

http://cgi.ebay.co.uk/M14-x-1-25-HSS-Metric-Fine-Second-Tap-Spark-Plug_W0QQitemZ290354091838QQcmdZViewItemQQptZLH_De faultDomain_3?hash=item439a73d73e

There are several pitches = x1, x1.25, x2

Thanks

[gtmatt]

That will do the full thread ,I have crossed threaded a few plugs and used this works a treat up to u mate m14 1.25 tap I think there is a topic some where have a look