2.2 motor options

[super9064]

What would be the result if I put a 2.4/2.7 crank in my 71T. It has had the following modifications by the previous owner, 2.2E pistons and cylinders, Webber Carbs, and these modifications by me 2.2E cams and a 71 "E" distributor.

I know one of the popular setups is 2.2 S pistons in a 2.4 motor which bumps the compression. Will going " Backwards" have the same result? Replacing the crank give me a higher compression ratio, correct? Also,increased displacement, right? will it be a 2.4? any idea of Hp resulting in this conversion?

Is there any reason not to do this? I have several cranks at lest one should spec out.

Thanks, Rob

[Flat6pac]

You will still raise your compression.
You will probably have to trim your skirts to clear the counterbalance on the crank
Your compression will come into the mid 9. cr
Its all the same idea as the S
If you got to buy a grind on a cam, buy a Solex grind unless youre turning the T cams to E which is less expensive.
Bruce

[Shoepop]

You will also need to change rods, 2-2-2 liter rods will not fit a 2.4 crank and if they did would be to long @ 130MM which would raise you compression alright, for a millisecond until pistons hit the heads. You will end up with a 2.4E with T heads. I would estimate HP 140-150 @ crank if all is fresh.

[super9064]

I guess I should have consulted Waynes book First. Waynes top engine picks

2.2>2.4 upgrade

70.0mm crank, E pistons, 2.2 cylinders, E cam, Carbs , 2.2 heads, Disp.2.4,Ratio10:1
"This is the best upgrade for 2.2 engines as it essentially turns them into a 2.4L displacement. The 2.4 and 2.7 share the same crank, so these cranks are easy to find out of junk 2.7 motors. Using the shorter stroke 2.2 pistons means that the compression ratio is elevated to about 10:1. This engine runs fine on pump gas without twin-plugging." He did not mention Rods.

According to Anderson The E and T heads have exactly the same specs, valve size,I46, E40 ports I32, E32

[Bez]

Originally Posted by super9064

I guess I should have consulted Waynes book First. Waynes top engine picks

2.2>2.4 upgrade

70.0mm crank, E pistons, 2.2 cylinders, E cam, Carbs , 2.2 heads, Disp.2.4,Ratio10:1
"This is the best upgrade for 2.2 engines as it essentially turns them into a 2.4L displacement. The 2.4 and 2.7 share the same crank, so these cranks are easy to find out of junk 2.7 motors. Using the shorter stroke 2.2 pistons means that the compression ratio is elevated to about 10:1. This engine runs fine on pump gas without twin-plugging." He did not mention Rods.

According to Anderson The E and T heads have exactly the same specs, valve size,I46, E40 ports I32, E32

This is what I was thinking for my 2.2 E rebuild (at some point). What was hp on this setup?

[super9064]

Originally Posted by Bez

This is what I was thinking for my 2.2 E rebuild (at some point). What was hp on this setup?

Don't know, should be more than a stock E, smaller ports hold it back, 180? 185? just a guess? wishful thinking. A Stock 2.2T is rated at 125hp, not sure if its worth the expense if its less than a 50hp increase.

A 2.4E =165 @ 6200rpm W/8.0:1, so I would think with 10:1 compression it would be closer to S specs

A 2.4S=190 @ 6500rpm w/8.5:1, S ports are larger 36/36

Has anyone done this build and run it on a dyno?

[marlinaness]

I once had a 2.2 with S cams and E pistons (in Germany). The car screamed on the autobahn . I may be following the same path but starting with a 2.4; E cams and 2.2 E p/c. Any results on any of these builds above?
thanks
Marlin