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| Torque & Tappet Settings for 425 http://www.international2cvfriends.com/forum/viewtopic.php?f=7&t=5371 |
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| Author: | Jono [ August 19th, 2014, 10:29 am ] |
| Post subject: | Torque & Tappet Settings for 425 |
Hi, Can anybody please tell me the following settings for a 1962, 3 stud, 425cc engine (from an AZU, if that makes any difference): - Cylinder head torques. Head oil feed pipe torques (head ends) Tappet gaps Many thanks Jono |
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| Author: | Bart [ August 19th, 2014, 7:49 pm ] |
| Post subject: | Re: Torque & Tappet Settings for 425 |
Well for the 425cc A79/0 engine (which I think is with the 4 stud manifold..) my Haynes says: Tightening hot initial: 10 lbf ft / 1,5 kgf m = 14.7Nm final: 15 lbf ft / 2,3 kgf m = 22.6Nm Again Haynes but not engine type specific: Cylinderhead oil unions: 10 lbf ft / 1,3 kgf m = 12.7Nm Oil cooler bolts (which I suppose are the early cooler/engine type ones): 10 to 14 lbf ft / 1,4 to 1,9 kgf m = 13,7 to 18,6Nm For comparison Haynes says for oil cooler union bolts (which I suppose it the late type) 7 to 9 lbf ft / 1 to 1,2 kgf m = 9,8 to 11,8Nm Tappets; Haynes says 0,15 to 0,2mm (0,006"/0,008"). On my M4 engine there is a plate next to the engine plate, saying it should be set "chaud" = warm/hot to 0,2mm and I think this is the rule of thumb for all early type engines. All this could be different for your engine with 3 stud heads, but I am sure it can't be far out. Hope this helps.. good luck! |
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| Author: | Jono [ August 20th, 2014, 11:21 am ] |
| Post subject: | Re: Torque & Tappet Settings for 425 |
Hi Bart, and thanks for that. I did check the Haynes first, but would like to find out the correct settings for the 3 stud before I start screwing this engine back together. I presume tappets should be set a touch wider than the original specs nowadays, as per M28s? P.S. Tappets will be set cold, as the engine's currently on my kitchen table... |
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| Author: | Sean [ August 20th, 2014, 6:53 pm ] |
| Post subject: | Re: Torque & Tappet Settings for 425 |
Jono wrote: P.S. Tappets will be set cold, as the engine's currently on my kitchen table... put the heating on ! reduce the oil head banjo bolt torque, they are the same as M28 and so will strip if you horse them up a-la Haynes |
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