M20B25 Reboring

Moderator: martauto

Mindelis
E30 Zone Newbie
E30 Zone Newbie
Posts: 118
Joined: Sat Feb 11, 2012 11:00 pm
Location: PE13

Post Sat Jun 29, 2013 11:14 am

I am thinking to rebore my m20b25 because it was left with no cylinder head so sleeves are a bit rusty, so i was wondering if i will rebore it will be enought to change piston rings or i really need oversized pistons aswell?
Top
Quaser
E30 Zone Addict
E30 Zone Addict
Posts: 2622
Joined: Sun Jan 09, 2005 11:00 pm
Location: West London

Post Sat Jun 29, 2013 12:11 pm

why don't you get a 2.0 block and rebore that?
BMW E30 2.0 Convertible (M52B28)
BMW E30 2.0 2 Door (M20B28 Turbo project to start)
BMW E36 328i Sport (M52B28 Turbo Project)
http://www.e30zone.net/modules.php?name ... ic&t=68663
Top
Mindelis
E30 Zone Newbie
E30 Zone Newbie
Posts: 118
Joined: Sat Feb 11, 2012 11:00 pm
Location: PE13

Post Sat Jun 29, 2013 12:28 pm

So i can rebore then b20 block to b25? Then i will be able to use my old pistons from b25?
Top
User avatar
reggid
E30 Zone Squatter
E30 Zone Squatter
Posts: 1983
Joined: Mon Jul 11, 2005 11:00 pm
Location: Oz

Post Sun Jun 30, 2013 2:34 am

ask the guy doing the machine work if honing will fix the rust. i would trust him over any anonymous guy on the internet
E30 325is with M20B31
Top

Return to “M20 Engines”