Where do I find p&c factory specs?

[Vintage914Racer]

I have a set of used 2.2s pistons and cylinders that I'm going to measure tomorrow. Where do I find the specs to determine if they are useable and within factory wear limits?

[VFR750]

Wayne's book on rebuilding has all the numbers for cylinders. In the appendix

Unfortunately there are many standards and there is no one set of numbers. You need the table and your markings and engine type (T,E, or S) to know which row & column applies.

[Vintage914Racer]

Ahh yes. I have the book somewhere in a box in the basement from moving a few years ago. Time to dig it out.

[VFR750]

An amazing amount of information is
In the appendixes. Using it now for valves....

[epilot]

is a 84mm 2.2T piston the same as a 2.4T piston ?
is a 84mm 2.2E piston the same as a 2.4E piston ?
is a 84mm 2.2S piston the same as a 2.4S piston ?

[Vintage914Racer]

Originally Posted by epilot

is a 84mm 2.2T piston the same as a 2.4T piston ?
is a 84mm 2.2E piston the same as a 2.4E piston ?
is a 84mm 2.2S piston the same as a 2.4S piston ?

They are different.

Porsche 911 Piston Reference numbers

yr/model size Mfg CR P/N
2.0 65-67 80mm Mahle 80v37
2.0 E 69 80mm Mahle 80v79
2.0 S 67-68 80mm Mahle 80P26
2.0 S 69 80mm Mahle
2.0 906 80mm Mahle 10.3 80P26
2.0 T 68-69 80mm Mahle
2.2 E 84mm Mahle 84v51
2.2 S 84mm Mahle 84p8
2.2 T 84mm Mahle 84V48
2.2 T 84mm KS 84072
2.4 T CIS 84mm Mahle 84v58
2.4 E 84mm Mahle 84072
2.4 S 84mm Mahle 84P11
2.4 T 84mm Mahle 84V54
2.4 T 84mm KS
2.7 CIS 90mm Mahle 8.1
2.7 CIS 90mm KS 8.1 90202
2.7 CIS 90mm Mahle 8.5 90L58
2.7 CIS 90mm KS 8.5 90208
2.7 RS 90mm Mahle 8.5 90P27
3.0SC 95mm Mahle 8.5 93L7
3.0 SC 95mm Mahle 8.5 95L70
3.0 SC 95mm KS 8.5 95136
3.0 SC 95mm Mahle 9.3 95L67
3.0 SC 95mm KS 9.3 95152
3.0 RSR 95mm Mahle 10.5 95P30
3.0 SC 95mm Mahle 9.8 95L70
3.0 Turbo 95mm Mahle 6.5
3.2 Carrera95mm Mahle 9.5 95p36++
3.2 Carrera95mm KS 9.5 95175
3.2 Carrera95mm Mahle 10.3 95p36++
3.2 Carrera95mm KS 10.3
3.3 turbo 97mm Mahle 7.5
3.6 100mm Mahle

[epilot]

Originally Posted by Vintage914Racer

They are different.

Porsche 911 Piston Reference numbers

yr/model size Mfg CR P/N
2.0 65-67 80mm Mahle 80v37
2.0 E 69 80mm Mahle 80v79
2.0 S 67-68 80mm Mahle 80P26
2.0 S 69 80mm Mahle
2.0 906 80mm Mahle 10.3 80P26
2.0 T 68-69 80mm Mahle
2.2 E 84mm Mahle 84v51
2.2 S 84mm Mahle 84p8
2.2 T 84mm Mahle 84V48
2.2 T 84mm KS 84072
2.4 T CIS 84mm Mahle 84v58
2.4 E 84mm Mahle 84072
2.4 S 84mm Mahle 84P11
2.4 T 84mm Mahle 84V54
2.4 T 84mm KS
2.7 CIS 90mm Mahle 8.1
2.7 CIS 90mm KS 8.1 90202
2.7 CIS 90mm Mahle 8.5 90L58
2.7 CIS 90mm KS 8.5 90208
2.7 RS 90mm Mahle 8.5 90P27
3.0SC 95mm Mahle 8.5 93L7
3.0 SC 95mm Mahle 8.5 95L70
3.0 SC 95mm KS 8.5 95136
3.0 SC 95mm Mahle 9.3 95L67
3.0 SC 95mm KS 9.3 95152
3.0 RSR 95mm Mahle 10.5 95P30
3.0 SC 95mm Mahle 9.8 95L70
3.0 Turbo 95mm Mahle 6.5
3.2 Carrera95mm Mahle 9.5 95p36++
3.2 Carrera95mm KS 9.5 95175
3.2 Carrera95mm Mahle 10.3 95p36++
3.2 Carrera95mm KS 10.3
3.3 turbo 97mm Mahle 7.5
3.6 100mm Mahle

vintage,

specifically for the 84mm pistons is it just the CR that differs and by that the shape of the valve pockets etc ?

[Vintage914Racer]

Originally Posted by epilot

vintage,

specifically for the 84mm pistons is it just the CR that differs and by that the shape of the valve pockets etc ?

To be honest I'm not entirely sure

[tom1394racing]

Send me your email and I can provide you with an inspection spreadsheet that I use for pistons and cylinder sets and also a reference spreadsheet for 911 piston types.