420 turbo question

420 turbo question

Author
Discussion

sharky55

Original Poster:

73 posts

250 months

Monday 20th August 2007
quotequote all
Can anyone tell me what pistons should be in the engine as standard? I have just taken the head off the engine due to h/gasket failure to find a composite gskt (should MLS AFAIR) and valve cut outs in the pistons. Although i have a number of head gskt jobs on this type of engine (usually in 800's though) i don't recall seeing the valve cut outs????? The pistons are made by Mahl part no. 817***3, they also appear to be in the wrong way round, the front marking appears to be facing the back? Could they be retro fitted or am i making a fuss about nothing?confused

Dave 500

6,623 posts

249 months

Tuesday 21st August 2007
quotequote all
Sorry mate don't know but someone will on rovertech.net smile

sharky55

Original Poster:

73 posts

250 months

Tuesday 21st August 2007
quotequote all
Thanks man, found the site through google!

Fordo

1,552 posts

231 months

Wednesday 29th August 2007
quotequote all
Sound like the right pistons to me. I know they definat;ly use mahle pistons

My old t series nasp had valve cut outs on the piston crowns. Not sure about the turbo, but i'd guess they do to. Obviously the turbo has lower comp pistons though. (So i hope somone hasnt put nasp pistons in your turbo)