Pas, do you have experience with JE low tension oil control rings? They feel really suspicious. Have now tested 2 kits of rings. Next I will take all apart and measure everything.
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Proper torque settings for 12.9 grade main bolts?
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Originally posted by Thuppu View PostPas, do you have experience with JE low tension oil control rings? They feel really suspicious. Have now tested 2 kits of rings. Next I will take all apart and measure everything.sigpic
1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racer
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Originally posted by AndyP View PostYou using JE pistons too? I hope mine is not rings as I really don't want to rebuild the engine again
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - Project
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The more I read about JEs the more I think they are just not suitable for use in a road engine! But I guess they are not designed as such, I am sure in terms of strength & lightness they are great, but I was put off by the seeminlgy massive clearances you need to run with them, hence I went with Wossner (which still use 3 x the clearance of the OE Mahles!)Panthero Coupé quattro 20vt
Indigo ABY coupé
Imola B6 S4 Avant
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Originally posted by Thuppu View PostSo, the stock main bolts(10.9 grade) torque specs are 48ft/lbs. ARP mains 65ft/lbs, but this can bend the main caps and press the clearance to zero.
So I suppose 12.9 grade bolts should be something between these? What would be the ideal sweetspot?91 Modded 3B
14 A6 Avant Black Edition
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Looking at this web source, the torque spec for 12.9 grade bolts should be in the 80NM range.
https://www.wtools.com.tw/STANDARD-B...G-TORQUE.shtml91 Modded 3B
14 A6 Avant Black Edition
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Originally posted by SteveH View Post
Did you ever get an answer to the correct torque rating for 12.9 grade bolts?
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - Project
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