Advice sought....2.2E or 2.4S pistons with E cams

[M491Cabriolet]

I am looking for the advice of the experts, please. I am having a stock 1972 911T 2.4 MFI engine professionally rebuilt. The MFI I'll be using is straight off of a perfectly running 2.2 E engine. The cams are new E cams. The quandry is, which pistons and cylinders should I use? I want the engine to be the strongest and fun, but street-usable as possible. I have two good sets. One set is 2.4 S pistons and cylinders, and the others are 2.2 E pistons and cylinders. I know the E pistons will offer higher compression, but I think the 2.4 pistons were also really good, right? I just don't know which to choose! The heads are the standard small valve 2.2/2.4 MFI heads with stock ports. I would so much appreciate your kind advice on this topic! Thanks in advance!

[BK911]

I had a 2.4E with 2.4S pistons in several of my cars. IMO the best engine I ever had. Now I am building up a 2.4E with 2.2E pistons for that extra compression bump. Should be even better! I don't think you can go wrong either way.

[YTNUKLR]

2.2 E, more compression, and keep the revs under 7k, because they are cast pistons

[blue72s]

Originally Posted by YTNUKLR

2.2 E, more compression, and keep the revs under 7k, because they are cast pistons

What about the 2.2E sets (Mahle) from Andial? Are they also cast?

[YTNUKLR]

I believe the OEM spec (Mahle) for the 2.2E is all cast.

[larrym]

search this & 911 forum for "cams" & "DRC"

- you are doing a mix-n-match that is fraught with conundrums - visit DRC site at the very least

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