Torque settings

[brokabolt]

Hi all,
Can anybody tell me what the settings are for the head nuts on a 250 griffon are. Cheers. Mick.

[Kim275]

Mick I use 22lb feet - which is what Dave Harpur advised me.
This is actually quiet a low torque. Key is after engine has been run and hot - to re-torque them.....and then you shoudl be fine

Any other views on the forum on this one?
Cheers Kim

[Brian Thompson]

Torque settings for Greeves Cylinder Heads.

Hi Kim, Mick,

I had a quick look earlier before leaving for work, and the 'Greeves General Service Notes-All Models' (GMC 157) handbook also quotes 22 lb ft, for both 4 and six bolt fixing Greeves heads.

Hope this helps guys.

Brian.

[brokabolt]

torque settings

Hi Guys,
Thanks for the quick reply. Much appreciated. Mick

[Rob]

I think it also quotes a piece of 1/4" rod 12 " long on the point of bending! I've always used good old 22 ft lbs anyway. Rule Britannia before we have to measure it in Newton Wombles or some other mythical continental rubbish such as HertZ-Litres!

No, I'm not hiding any Imperial scales under the workbench, honest Mr Euro-Policeman!

[Kim275]

1/4" rod 12 " long on the point of bending!= 22lb ft

Love the alternate torque method Rob!! Comes form an era when maybe you could not necessarily afford to buy a specialist too like a torque wrench!!
I am going to try that one out and do a comparison when I rebuild big Griff this winter !!

p.s wonder if there are any other engineering gems/tips like that in either the Greeves manuals or members own knowledge

Brian could be worthy of a section if we get some good input!

[Brian Thompson]

I like tools, I have several!

Brian could be worthy of a section if we get some good input!

Hiya Kim,

Great idea, but I relinquished my powers in that direction long ago....one for the mods/admin team now.

For what it's worth though, I tend to favour using a spigotted double-ended wibble shafter, calibrated in Christian units of course, but they are hard to come by these days....

Brian.

[Brian Catt]

On the subject of torque settings, a respected purveyor of Royal Enfield components has published a list of settings in both English and Metric...Great and very helpful, except that they had at least one vital setting transposed. Very embarrassing!

[dave higgins]

ooh err!!!!

Rob/kim/brian, with reference to the steel bar method!, there is a flaw with this, & without wishing to sound like benny hill, it must be pointed out that where you place your hand over the twelve inches is crucial, much easier to bend farther out! wheras you will find it much firmer down by the nuts....

[Rob]

Yes quite but I've always placed my hand on the end of the 12 inches, well away from the 4 nuts! This always seems to work well.

A bending moment should always be avoided as this can lead to later disappointing performance, female participants often seem to spot this.

22 ft lbs should prevent blowing.

[dave higgins]

Ha Ha, nice one......

[Brian Thompson]

Nuts!

Yes quite but I've always placed my hand on the end of the 12 inches, well away from the 4 nuts! This always seems to work well.

A bending moment should always be avoided as this can lead to later disappointing performance, female participants often seem to spot this.

22 ft lbs should prevent blowing.

Good one Rob!

Some cracking posts tonight, great to see the old forum/GRA spirit showing itself again on here, and some much more interesting (and useful) stuff being posted (...well, mostly!)

It's a breath of fresh air.

Keep up the good work men!