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  1. Bottom end rebuild using crank and pistons from old engine

    BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Hi all I just need some advice on using my old crank and pistons in my second engine as I've found that 5 rod bearings have been rotating and knackered the crank and rods my problem is when I disassembled my first engine I never kept the pistons in order and I'm having trouble finding what...
  2. Brake Pistons will not Push back

    General BMW Discussions
    Hey We have an E85 Z4 and I am trying to change the pads but the brake pistons will not retract fully to allow the new pads to go on. Both sides go back the exact same amount and then just stop, no amount of force is getting them back anymore. See attached image. I have the master cylinder...
  3. M50B20 stroker to M52B28 Pistons issue

    Hello, I am assisting a friend with his project. In general we have M50B20 engine block with increased cylinder bore to 84mm, cylinder head from M52B25, Crankshaft,Pistons (from aluminum block) and Rods,fuel injectors from M52TUB28, everything else (with some exceptions) from M52B20. I have the...
  4. Mixed pistons in a rebuild, does it matter?

    BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Doing a rebuild on a m62b44 lump after the usal timing chain issues!, manidged to mark 2 of the pistons with the same number!!:hihi(blonde moment)changeing the end shells anyway but not rings,will it really matter?:cool
  5. Swirl Flaps Fell in - Advice Needed please... (Pic Heavy)

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi Guys I'm a new forum user with a 2004 E46 320D ES Touring with the M47TU2 engine. I had never even heard of Swirl Flaps until about a week ago when my car started to make a horrible 'metallic' sound. It sounded like it was coming from the top of the engine, but I couldn't pinpoint exactly...
  6. Help with stroker (math) - head, pistons, compression m50b20 -> m50b25 -?> m50b30

    BMW Tuning Forum
    Hello friends! I am new on this forum and I apologise for being total newbie in matter of BMW and mechanics (and sorry if I posted this in wrong category). I got a problem while working on my stroker E36 M50B20 (1992). I am not sure what if I understand correctly calculations I was trying to...
  7. M57N Pistons, Anybody have some?

    BMW X Series - Tech Talk For All Gen Of X Series
    Hi I am in need of some M47N Pistons if anybody happens to have any. I'm doing an engine rebuild and I'm in need of four. Any Help would be greatly appreciated! Thanks :@)
  8. 330D Pistons, got one I can borrow? Help with engine build!

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi guys, I'm looking for a 330d piston with conrod. Seems as I have an engine apart that I'm building I would like to, for the benefit of others also, test fit a 330D piston to a 320D block. I know there would be no performance advantages to doing this, and the combustion chamber is undoubtedly...
  9. Forged Rod and Pistons

    BMW 3 Series Forum - Technical Talk on the BMW E21
    Hello to all! My motor is locked, my mechanic told me what happened, lacked oil because the pump stopped working and so the engine caught and broke a connecting rod, so now I need to buy a new set of rods and pistons too, someone I can suggest a brand of rods and forged pistons good quality? I...
  10. 2004 e46 320d pistons

    Hereford BMW - Bimmerforums Shop
    hi there, can you give me your very best price on a set of pistons and rings for a e46 320d 2004..? a set and seperate? thanks vin fy70164
  11. Will 2006 E60 530d pistons fit a 2003 E60 530d please ?

    BMW 5 Series - Tech Talk For All Gen Of 5 Series
    I'm told they measure 82.07 mm and look to be in good nick, but haven't managed to pull mine out yet and didn't want to miss the offer, Thx in advance
  12. 2002 BMW 320D SE Touring Pistons

    Hereford BMW - Bimmerforums Shop
    Hi, my reg is KE02 CFA.. Do you do oversize pistons with rings for my car? If so, which size pistons and how much for a set of 4?
  13. 2001 E46 M3 - Pistons Question

    BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi, I had a previous problem which has resulted in 1 piston being damaged, unfortunately im told BMW only sell them in full sets of 6, and they are out of my budget, but on looking around, i see that JE do forged pistons which are expensive but not as expensive as OEM. I'm not that mechanically...
  14. 1985 E23 745i pistons

    BMW 7 Series - Tech Talk For All Gen Of 7 Series
    Where can I buy pistons first oversize for my 1985 745i ? Thanks
  15. S50B30/S50B32 pistons?

    BMW 3 Series Forum - Technical Talk on the BMW E21
    Are the pistons interchangable?,Been looking for pistons for my rebuild and replacement forged piston are...well damned exspensive!. standard B32 pistons are the same bore as over sized B30 ones. are they the same piston just a bit bigger or is the crown a different height?