Haynes Warning

[WildGoose]

a word of advice, be very wary about following any advice from these books regarding torque settings

i'm well aware that torque settings are pretty in-accurate as it is, but it appears haynes has no clue about the bikes they write about, and so far i have encountered 3 torque settings that are so woefully wrong, that its caused the bolt to shear clean off

so use only manufacturer quoted torque settings, if you dont wish to ruin your weekend

and avoid instant gasket, its toss, use only official honda parts, thank you
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So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[Kickstart]

Hi

Go on, which bolts and what torques?

Also might be worth checking the torque wrench. Years ago I sheared a head bolt on on the MBX125 using a torque wrench. Turned out that when it was indicating 15 lb/ft it was actually almost 30.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[WildGoose]

disc bolts, quoted as 20 when it should be 15, snapped as a result

clutch cover bolts, read as 24, should have been 12, bit of confusion on my part, as they word it as "8mm engine cover bolts" which i thought meant the head, but apparently means the thread

would be much nicer if they quoted the bolts they mean

the exhaust bolt torques were too tight as well, i sheared one of those earlier today, but cant remember the exact number
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So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[Kickstart]

Hi

That is a very low torque for a disk bolt. EG, early CBR600 it is 29lb/ft, slightly later ones 31 lb/ft. The VFR400 it is 14lb/ft though.

Metric bolts are always quoted on the thread size (it is the old WW ones that the spnner size referred to the thread).

Had fun with a Clymer manual that told you to refer to "table 1" for the cylinder head torques. Found table 1 and it gave a torque for the appropriate size fastener. Later found another table one in that chapter (rather than in the notes at the front) which gave a specific higher torque for those bolts.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[WildGoose]

the above torques were in Nm, didnt make that clear

it just frustrates me, cos making a manual like a haynes must cost loads, why cant they do it properly, making the list of torque settings 3-4 pages long rather than trying to abbreviate it by saying, 8mm bolt = such and such a torque

haynes are sposed to be an idiots guide anyway, surely
____________________
So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[Kickstart]

Hi

Personally I wish they would put the torque in the text as well as a list at the start of the section, as I get hacked off wandering off to find the torque figures and loosing the place in the manual.

However most bolts are just torqued to a generic value for that size bolt, and with metric bolts an M8 refers to an 8mm thread.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[ZRX61]

You torqued the clutch cover bolts?????

[WildGoose]

yes, do you have a point, other than trying to sound condesending?

every bolt down to the oil filler cap has a specified torque setting, if you were to service a bike officially by the book, you would use a torque wrench for everything

and considering the clutch cover, is an area with gasket, where the idea is to stop oil leaking, you would think its a fairly important bolt to get the torque right

so kindly stfu
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So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[Robby]

Goose has a torque fascination. Others just do things up tight, goose torques everything.

We leave him to it, and he doesn't bother us.

[Ste]

[Robby]

Its only Danny, its not an important bolt.

[carvell]

Bleh to torque settings.

I've never ever used one, I just do them up as tight as I think they should be done up, when I feel it beginning to shear or I think it's goign too far, I stop.

Not had a problem yet.
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Yamaha TDM 850

[Rory]

*cue sheared sump plug*
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My Old CBR400RR | Bike Oil FAQ | Petrol FAQ

[carvell]

That's the one I'm most weary of - bollocks am I letting some tool tell me if its tight enough - if I do it myself I can stop before it shears, the tool won't!
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Yamaha TDM 850

[Phoenix]

I thought you guessed the tightness goose, as your torque wrench didn't go low enough

[WildGoose]

shush, that was only one of them
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So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[mrchips]

What happened the gold old days of mechanicing when you knew how tight a bolt should be by the feel of the ratchet?

[stinkwheel]

[RealNinja]

[Clanger]

We use the Clymer manuals - far more descriptive in their diagrams!
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Be who you are and say what you feel, because those who mind don't matter, and those who matter won't mind - Dr. Seuss

[mr.z]

Somehow managed to get hold of a factory manual (for a 20year old bike they are a little bit rare!) i go by that for torque settings...

I'd rather spend 3minutes torqueing a bolt properly than several hours fixing it. I very nearly had a knackerd radiator because somebody thought they knew better and guessed the torque, it was WAY too tight and could have knackered the rad, just because they couldn't be arsed to check. It didn't need torqueing but 2lbft gives you a clue.
Overtightening might not shear the bolt but it can cause fractures in say.. your engine caseing (on the sump plug, how about a never ending leak, great fun).

Haynes have a bit of a reputation for over-enthusiastic torque settings, if it says 10-20 i use 12 or 25-30 i'll use 27, or get it out the propper manual!
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