Main Bearings are 60 ft/lb (tick) but the Big Ends are only 35 ft/lb
Cylinder Head - what studs are you using? are they new and what nuts?
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| Torque settings https://www.ausmini.com/forums/viewtopic.php?f=2&t=64203 |
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| Author: | jester99 [ Mon Jul 05, 2010 7:02 pm ] |
| Post subject: | Torque settings |
My haynes manual states 60ft/lb for main bearing cap tension and 46 ft/lb for conrod bearing tension. can anyone confirm if this is corrrect for a 1098? the haynes manual lists these settings listed above for a 998cc, is it the same for a 1098? also with the cylinder head tension, should i use the settings specified by the haynes manual or the settings from the gasket maker? (ACL) thanks guys |
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| Author: | GT mowog [ Mon Jul 05, 2010 7:09 pm ] |
| Post subject: | |
Main Bearings are 60 ft/lb (tick) but the Big Ends are only 35 ft/lb
Cylinder Head - what studs are you using? are they new and what nuts? |
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| Author: | jester99 [ Mon Jul 05, 2010 7:12 pm ] |
| Post subject: | |
yeh i bought a new set of competition studs and nuts. so should i re-tension the conrod bolts to 35 ft/lb? is 46 to much? head gasket is ACL monotorque. |
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| Author: | GT mowog [ Mon Jul 05, 2010 7:20 pm ] |
| Post subject: | |
Big Ends - yes, 46 ft/lb is over the top (for standard bolts). 35 ft/lb is the corect factory torque, however if you are using Unbrako Cap Haeds you can go to 42 ft/lbs. Competition Head Studs and Nuts - what brand? Did they come with any recommendations? Factory Studs, depending on specifically what they are, vary in torque settings from 40 to 50 ft/lb. The required torque is not dependant on the gasket, the the 'stretch' of the stud. |
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| Author: | drmini in aust [ Mon Jul 05, 2010 7:24 pm ] |
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998 & 1098 are same torque settings. But if you have done the factory 1098 rod bolts up to 46, I would bin them- they are now overstressed. |
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| Author: | jester99 [ Mon Jul 05, 2010 9:04 pm ] |
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head bolt kit is minispares C-AHT279 and no they didnt have any specs with them in the package they came in. so the rod bolts are throw aways? |
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| Author: | drmini in aust [ Mon Jul 05, 2010 9:14 pm ] |
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I would not trust them now. bolts are cheap, blowups are not. 
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| Author: | GT mowog [ Mon Jul 05, 2010 9:17 pm ] |
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jester99 wrote: head bolt kit is minispares C-AHT279 and no they didnt have any specs with them in the package they came in.
so the rod bolts are throw aways? If as the Doc says, you've torqued them to 46 ft/lb then YES (I'm surprised they didn't break). 42 ft/lb for that stud kit. |
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| Author: | jester99 [ Mon Jul 05, 2010 9:49 pm ] |
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thanks guys, will grab some new bolts tomorrow, lucky i checked before i put the box on 
will leave the mains they are fine, will tension conrods to 35 ft/lb after new bolts and head to 42 ft/lb. thanks guys greatly appreciated. |
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