Author Topic: Pistons  (Read 3594 times)

AndersO

  • Full Member
  • Junior Level
  • *
  • Sweden, Skane, Barsebäck
  • Posts: 33
Pistons
« on: May 27, 2015, 11:59:12 »
Hi,
I am trying to restore a 280SL block ( engine number 130 983 12 - 014205) which supposedly comes from the US. The restoration was started by someone unknown, the bore is now 87.50 mm and good, and I need to find pistons that fit.
Does anyone know if I can use the EU type pistons with a compression height of 48.6 mm and the length of 80.6 mm, instead of what I believe to be the MB specs with compression height 47.9 mm?
Many thanks,
Anders in Sweden

Naj ✝︎

  • Associate Member
  • Platinum
  • ******
  • United Kingdom, Surrey, New Malden
  • Posts: 3163
Re: Pistons
« Reply #1 on: May 27, 2015, 14:49:06 »
Doe this help?

naj
68 280SL

AndersO

  • Full Member
  • Junior Level
  • *
  • Sweden, Skane, Barsebäck
  • Posts: 33
Re: Pistons
« Reply #2 on: May 27, 2015, 16:25:56 »
Thanks Naj,
These are the pistons I want to buy. The question is if they will work in the US Automatic engine?

Naj ✝︎

  • Associate Member
  • Platinum
  • ******
  • United Kingdom, Surrey, New Malden
  • Posts: 3163
Re: Pistons
« Reply #3 on: May 27, 2015, 20:51:13 »
Hi, AndersO,

According to my interpretation of the EPC, Both Euro and  US engines after engine # 12 007230 use the same pistons.
The standard piston part # is 130 030 8917.
I could not find the part #s for the oversize pistons.

Hope this helps

naj
68 280SL

AndersO

  • Full Member
  • Junior Level
  • *
  • Sweden, Skane, Barsebäck
  • Posts: 33
Re: Pistons
« Reply #4 on: May 28, 2015, 07:11:46 »
That is reassuring.
I have now ordered and hope for the best.
Many thanks,
Anders

AndersO

  • Full Member
  • Junior Level
  • *
  • Sweden, Skane, Barsebäck
  • Posts: 33
Re: Pistons
« Reply #5 on: June 29, 2015, 13:29:54 »
Pistons are now in place, and although the engine is far from complete, they seem to fit very well.

Benz Dr.

  • Vendor
  • Platinum
  • ******
  • Canada, ON, Port Lambton
  • Posts: 7146
  • Benz Dr.
Re: Pistons
« Reply #6 on: June 30, 2015, 01:51:50 »
I've found that over size pistons are a bit shorter so that you can deck the top of the block which is usually needed anyway.
« Last Edit: July 02, 2015, 22:36:22 by Benz Dr. »
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC