Spark plug torque
#3
10-08-2011 | 08:03 AM
OVERDRIVE
Joined: Jul 2006
Posts: 7,037
Likes: 282
From: Melbourne, FL
Haynes for Mini 1969 to 2001
page 1.2 Servicing Specifications
Torque wrench settings
Spark plugs 25 Nm ... 18 lbf ft
I used the bottom + 1/4 turn for a very long time as well
yes it would be nice if all tor' specs were in one place, but the more time you spend with your nose in the Haynes the more places you remember to look! I've got a bunch of sticky tabs hanging out of my copy . . and many notes written in white space of the front page with references for recurring issues. Like the valve adjustment order, and engine tor' specs (but not ALL as we see)
page 1.2 Servicing Specifications
Torque wrench settings
Spark plugs 25 Nm ... 18 lbf ft
I used the bottom + 1/4 turn for a very long time as well
yes it would be nice if all tor' specs were in one place, but the more time you spend with your nose in the Haynes the more places you remember to look! I've got a bunch of sticky tabs hanging out of my copy . . and many notes written in white space of the front page with references for recurring issues. Like the valve adjustment order, and engine tor' specs (but not ALL as we see)
Last edited by Capt_bj; 10-08-2011 at 01:15 PM.
#4
10-08-2011 | 09:10 AM
#6
10-08-2011 | 01:21 PM
OVERDRIVE
Joined: Jul 2006
Posts: 7,037
Likes: 282
From: Melbourne, FL
or what I call a two ugh
an oil filter only gets one ugh
+++++++++++++++
I'm gonna add an editorial comment here and if some disagree ... well what's NEW about that?
'click' type torque wrenches are not very accurate at the extreme ends of their range - the less expensive the wrench the wider the spread of the "bad area"
While I had heard this professionally many times when I was manager for rebuilds of 3000+ hp engines with pistons 18 inches in diameter I'd never experienced it personally until a lil' while back when I was torq'ing a lug nut on my 79 and it stripped.
What the . . . . thought I and I changed the lug & bolt, retried and DAMN ... same thing. I was using a low cost click type tor' wrench and the tor' needed was in the lower 10% of the wrench's capacity.
I sought out an old fashion 'beam type' tor' wrench and discovered my click was all but worthless - AT THE LOW END.
+++++++++++
If you are using a HF click type tor' wrench for your wheels AND your plugs .... you are probably better off using the UGH method for the plugs!
BTW A Classic Mini's lug nut tor' is typically half of what you'd expect (according to the book)
an oil filter only gets one ugh
+++++++++++++++
I'm gonna add an editorial comment here and if some disagree ... well what's NEW about that?
'click' type torque wrenches are not very accurate at the extreme ends of their range - the less expensive the wrench the wider the spread of the "bad area"
While I had heard this professionally many times when I was manager for rebuilds of 3000+ hp engines with pistons 18 inches in diameter I'd never experienced it personally until a lil' while back when I was torq'ing a lug nut on my 79 and it stripped.
What the . . . . thought I and I changed the lug & bolt, retried and DAMN ... same thing. I was using a low cost click type tor' wrench and the tor' needed was in the lower 10% of the wrench's capacity.
I sought out an old fashion 'beam type' tor' wrench and discovered my click was all but worthless - AT THE LOW END.
+++++++++++
If you are using a HF click type tor' wrench for your wheels AND your plugs .... you are probably better off using the UGH method for the plugs!
BTW A Classic Mini's lug nut tor' is typically half of what you'd expect (according to the book)
Last edited by Capt_bj; 10-08-2011 at 02:26 PM.
#7
10-10-2011 | 09:53 AM
4th Gear
Joined: Sep 2005
Posts: 385
Likes: 0
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