1979 SC piston types

[MoparBoy72]

I am working on a 1979SC with a 930/04 type engine. My question is how many piston designs were in the 1979 SC engine?

Looking through disassembly photos, the pistons I removed and the new set do not look identical though I am told both are for a 1979 911SC?

The new pistons are like below:



The pistons removed from the engine are like the photo below:



Will I have any issues with the new pistons?

Thanks,

[Flat6pac]

The one on the top are cast inside @93Lxx. 8.5 CR 78/79
Need to look inside lower set but look like 95L67 Mahle 9.3 from 80/83 but you have to read them and post to be sure.
Bruce

[MoparBoy72]

Thanks for the feedback Bruce;

I just ran out to the shed and looked at the old pistons; Which are not Mahle but look to be KS, the number inside is 095136.

I am just looking to ensure I have the application correct and the piston dish did not seem to match 100%.

Thanks again,

[Flat6pac]

Two different manufactures. I can't recall the KS numbers. If you research there is a list of inside numbers here posted.
I found the list. The 136 show as 9.8 KS in reference.
Bruce

[pampadori]

095152 on the inside are the 9.3:1 95mm KS.
095136 on the inside are the 8.5:1 95mm KS.

Here is a picture I took earlier this week that shows the two side by side:

[MoparBoy72]

Thanks for the follow up; This makes sense; The KS and Mahle pistons are both 8.5:1 but just look different due to each supplier having their own design. Thanks for helping me clear this up.