Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: w113bkk on April 30, 2018, 02:40:33

Title: pistons
Post by: w113bkk on April 30, 2018, 02:40:33

I am rebuilding my 230sl engine. Other than the classic center where can I find pistons for my car? I am most likely using 1st over pistons. I also need to find the diameter of the piston to give to the machinist. Does anyone also have recommendations on a good place for an oil pump and cam gear?

Thanks!

Title: Re: pistons
Post by: Jowe on April 30, 2018, 06:22:28

Check SLS: https://www.sls-hh-shop.de/main/en/mercedes-230-280sl-w113-/03-engine-m127-m129-m130

Title: Re: pistons
Post by: Benz Dr. on April 30, 2018, 15:00:43

Would need to know how many rings are on your pistons, the width of those rings, casting number on your connecting rods, and piston pin diameter. There are 3 different pistons used on 230SL engines. I have a set on 3rd version pistons in stock. 3 ring 25mm pin.

Title: Re: pistons
Post by: George Des on April 30, 2018, 16:27:41

I would not have the machinist do any work on the block until he has the pistons in hand regardless or whether you know the size beforehand. All sizes are plus or minus a certain amount from the given sizes--engineering tolerances. The cylinders need to be bored precisely to the diameter of the piston plus the required side clearance. This is best done when the actual pistons that will be fitted are in hand and can be individually fitted with the proper clearances.

Title: Re: pistons
Post by: Benz Dr. on April 30, 2018, 16:36:01

I agree.