Classic cars forum & vehicle restoration.
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Bernie wade
Joined: 27 Jan 2014 Posts: 2
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Posted: Fri Jul 11, 2014 7:49 am Post subject: Rollsroyce engine data |
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Hi
Has anyone got torque tightening data for a RollsRoyce B60 20A engine
Fitted to an early fire engine
Head bolts
Big end bolts
Tappet settings
Firing order
Thanks
Bernie Wade |
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peter scott
Joined: 18 Dec 2007 Posts: 7118 Location: Edinburgh
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Posted: Fri Jul 11, 2014 12:07 pm Post subject: |
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Hi Bernie,
I have the service manual for the Wraith, Dawn, Phantom IV and MkVI Bentley and I can't find any reference to tightening torques for any of the places you list. (Only the slipping load of the vibration damper.)
Probably best to take a guess from the stud material properties.
Peter _________________ http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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Bernie wade
Joined: 27 Jan 2014 Posts: 2
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Posted: Fri Jul 11, 2014 12:17 pm Post subject: RollsRoyce |
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Many thanks for your reply |
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peter scott
Joined: 18 Dec 2007 Posts: 7118 Location: Edinburgh
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Posted: Fri Jul 11, 2014 1:28 pm Post subject: |
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Sorry, forgot the firing order.
My Service Manual quotes:
6 cyl
1,4,2,6,3,5
8 cyl
1,6,2,5,8,3,7,4
I see Ashley of this forum gives pdfs of the MkVI manual in his website (although the manual and parts list titles appear interchanged)
http://www.kda132.com/pdfs/partslist/6_E_Engine.pdf _________________ http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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Phil - Nottingham
Joined: 01 Jan 2008 Posts: 1252 Location: Nottingham
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Posted: Fri Jul 11, 2014 8:20 pm Post subject: |
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Perhaps a BMC site for the Princess R which had the 4 Litre FB60 engine may give some guidance? _________________ Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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Ashley
Joined: 02 Jan 2008 Posts: 1426 Location: Near Stroud, Glos
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Posted: Thu Jul 17, 2014 5:27 pm Post subject: |
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Rolls-Royce never gave torque figures for their engines, instead the specified the length of Tommy bar to be used with a box spanner.
There are two sizes of head bolt, mine are 3/8" and I tighten them to 35lbs/feet. Then because I've had trouble with pattern head gaskets, I do 100 gentle miles and then torque them again and again at 500. If they still go down a lot I keep checking until they settle. Do it with a hot engine because you have an iron head.
Big ends a bit less then I go further until I can get split pins in. Make sure they're a tight fit or they vibrate and fall to bits.
Main bearing too, are happy at 35-40lbs/ft.
Exhaust tappets are 6 thou and inlet 12. |
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