Markus951

My broken ones


Markus

944CS

you can't rely on PET to source you the exact rod Porsche used for initial production because Porsche sometimes discontinues parts and replaces with others to lower manufacturing costs, and maybe other reasons. For example, N/A 944's built before 3/84 came with forged rods, but I can gaurantee you wont recieve forged rods today if you order brand new ones from Porsche for your '83 944.

Chris White

If I get a minute tomorrow I will shoot some pics of the 968 rods/pistons I have sitting around the shop.
I don’t like the rod design (forged or not) the ‘neck’ at the little end is to narrow.

blodstrupmoen

All 968 engines I`ve seen has had forged pistons ..

I asked at Porsche, they checked and said both pistons and rods are forged on the 968, But then they also claimed the bores on the
951 to be nicasil

So as far as I know ............

pete95zhn

To be precise, PET gives only one number for early 944 ( including all MY's ) :
944 103 001 01 ... which apparently was forged.
Then it also says that "it's been dropped, use 944 103 008 00 as replacement". Which is again that very same replacement rod for almost all 944's.

Konstantin

yes both are
the first rods had problems.
to weak even for a NA 968

Konstantin

944CS

-01 is most likely the forged rod, and -00 is most likely the cast rod, which is why that is the replacement now.

rcatherton

From 944 Workshop Manuel 13-34a

Old - Sintered connecting rod, Part No. 944 103 001 00 (rough part number on inside of conrod shaft)
New - Cast connecting rod, Part No. 944 103 001 01 (rough part number reduced on both sides on conrod base and conrod cap).

From 951 Workshop Supplement

944 103 008 00 Sinter-Forged

From 968 Workshop Manuel

Rods Forged

Reinforced connecting rod adopted from Oct 1, 1993 as of the following engine numbers.

42R00598 M44/43
42R50621 M44/44

Reinforced transision are from stem to bolt head seating surface.

From 1999 Water Cooled Parts & Technical Catalog

924S 1987-88 Part 944 103 008 02
944/S/T 1983-88 Part 944 103 008 02

From PET

968 (Both Rods Shown For 92-95) M44.43/44

u944 103 008 01
944 103 008 04

944

944 103 001 01 M44.02, M44.04

944/2

944 103 001 00 M44.50/51, M44.52

944 103 008 00 M44.05-10, M44.40

amschnellsten

thicker gasket works quite well. I have seen doubled gaskets also and the owners say they have had no rpoblems. Gasket is easier and cheaper and proven.

Markus951

Hey

To those who have 968 pistons in their position..Can you please measure the thickness of the pistons top. I did cut one 951 piston into 2 halfs and you can see that the thinnes area in the dome is somethig 8mm - but we all know how deep is the dome in 951 pistons..

I need to know can stock 968 pistons dome area can be machined for that extra chamber volume to bring down the compress ratio? I could put them into CNC machine and remove some material from top of piston, dome without touching the quench. Lets say I need to bring down the comp ratio from 11:1 to 9:1.

By shortering the rod for lower comp.ratio it would mean 2mm shorter rod to bring it on the same kind level. in teh piston I need to go deeper because dome volume is not equal to chamber volume.

markus

968turbos2

just have some pistons made to an 8.0 or so compression ratio.

Markus951

Well I am looking for other options at the moment then to spend 1750 USD + transportation+ 10% customs + 18% VAT = 2400 USD just for PISTONS. I think there are other options and if you ask me 8,0:1 is way to low for modern 16 valve turbocharged engine. There are some other areas in my car where that money should be througed

Markus

nick_968

thrown....

Duke

Custom JE's with coatings should we well below 1000 USD?
If you're willing to try them out that is.

Markus951

But JE would also mean niklasil coated bore?