Differences between stock 2.2T and the E and S engines
 

Hello gentleman first of all thanks for your time and knowledge, I'm curious as to the differences between a stock 2.2 T and the E and S motors for 1970. I'm looking at a barn find 1970T with a stock 2.2 w Zeniths. I own a 1980sc with CIS and have just completed a top end refreshed heads, new rings, new gaskets ect.
As I have learned the 1980 US SC configuration is too expensive and difficult to modify even to Euro specs , due to the induction and CIS pistons, ect. You all know how much $ you have spend to increase HP. Any information on how the 2.2 S produced 180 HP instead of the T's 125hp would be great. What else is responsible for the difference 55 more HP besides the MFI induction set up. Hotter cams? Different pistons? Dreaming about a light long hood with a potent motor. Can the original 2.2T be adjusted to S specs or would a smarter plan be to find a 2.7 or 3.0 for a transplant.

Thank you.

JS

Here are the major differences in the S vs the T engines:

1. Counterweighted crankshaft
2. Forged, higher compression pistons
3. Heads with bigger ports
4. Cams with more lift, duration and overlap
5. Mechanical fuel injection

These differences allowed the S to make more power especially at the high RPM range

Thanks Tom-

Any thoughts on course of action for HP upgrades for the stock 2.2 T motor?

JS

Js, 30 years ago I had the same situation. worn out 2.2 T. My solution was to get 90 mm 2.7 nicasil p/c 8.5 CR. L/E cam, webers, ssi. back then the p/c cost $750 btw. This ran very well even though compresion with the 2.2 crank made 8Cr and 2515 ccs. It needed an external oil cooler at track runing. on the track it would accelerate with 3.2s so doing a weight/ acce test I guess it made aprox 170 hp. Today you can get JE with 9.5 Cr or more with a better cam ie E or solex you would have a very good engine. BUT remember as stated you won't have a couterweight crank so keep rpm under 7 k.