tappet locknut: their undoing!

i have just done an engine which has tappet locknuts with nearly 1mm of lateral slop!

can i ask any of you checking tappets in the near future fo do this check for me and undo the locknut a 1/4-of-a-turn and see what lateral movement you can get.

i had an engine last week that was blown up because the locknuts had come off both inlets. it's happened to me, it's happened to froggy and i dare say a few others daen't admit it because initially it would seem to be a numpty's mistake!

so keep an eye out lads please and tell me what you know.

i have also been sent rockers where the tappet screws fall straight through the hole so what's the story on that?

some say they have always been 'X' but i have my doubts.

regards

Taffy

magnusson

we'd call that a helecoil and i agree with you. however the loose locknut with that much 'slop' is something i've never seen before.

regards

Taffy

you'll find the rockers are a fraction of the length of the old stuff that we're used to now, having stripped two shercos i can tell you that the rockers will jhave a lot in common.

haven't checked the camchain pitch yet but there is no way that that will still be 3/8th"

regards

Taffy

hoover

caterpillar

fairy liquid

who cares!!!!!!



:twisted: :twisted:

regards

taffy

its those irishmen that that make life worth living! everything looks better after a guinness!

regards

Taffy