View Single Post
  #4  
Old 04-07-2008, 10:26 PM
300EVIL's Avatar
300EVIL 300EVIL is offline
Moderator Incarnate
 
Join Date: Apr 2000
Location: Lake Geneva, WI.
Posts: 1,676
Quote:
Originally Posted by JayRash View Post
i am doing a rebuild anyways so i thought forged will keep trouble away.
Do u know for what HP the original pistons are good for? will they take like 0.55 bar boost?
check this by the way:
http://www.youtube.com/watch?v=DDFJZTeKbR4
If you only plan on running .5 bar of boost, your fine with a stock bottom end. Forged pistons are a good way to go but compression ratio is a more important factor when running boost. Your stock M103 is at 9.2:1 CR which should handle 8 psi without any problems. The stock pistons are a very tough cast alloy and will handle a good beating. Don't waste your money or time on pistons unless you are looking for 1 bar + boost.
__________________
Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

Reply With Quote