The new turbo style M2, M3, M4. Use the N55/S55 engine, same as the m54b30 stroke and bore and rod bolts that run on a turbo, so them M9x47 bolts must hold up ok if they use them still..
ARP not needed ??
Asked my machine shop about the ARP way and said only if you go for turbo use them. Told him about the standard OEM bolts are used on a modern M/// turbos and said them bolts and rods must be a good setup. His only seen the s50, s54 and s62 rod bolts go. They use the M11 blots I am sure..
M52b30/M54 rod bolts info
Moderator: martauto
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reggid
- E30 Zone Squatter
- Posts: 1984
- Joined: Mon Jul 11, 2005 11:00 pm
- Location: Oz
rpm hurts rod bolts more than boost and it is rpm^2 factor. standard are fine on pretty much any NA m50-M54 unless you are doing a high rpm motor for the extended track use
E30 325is with M20B31
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frogy
- E30 Zone Newbie
- Posts: 14
- Joined: Mon Mar 19, 2018 11:00 pm
The new Turbos have a rpm of 7k so them bolts must be ok or BMW wouldnt use them again on a new spec M blocks