2.2 to 2.5 tbi

[Lone Eagle]

Quote:

Originally Posted by william I have run my 92 TBI shadow 2.2 on both 2.2 and 2.5 computers with no difference in performance or economy. The computer has more than enough latitude to adapt the fuel based on O2 readings. That isn't to say that they are the same, only that I noticed no difference in my case.

IIRC, the '91-up cars software would adapt. Us pre-90 jocks are stuck with this issue....lol

[Sasky]

I'm throwing this in here just for grins, giggles, and a "What were you thinking....???" award...

I have a 1988 Dakota that came with a 2.2 Carb engine and a 5 speed. I got the truck for a good deal. It ran like crap. I had the carb rebuilt, performed a major tuneup and other yada, including much research on timing and replacing the timing belt. I got it to run good in the driveway, but not worth a plug nickel on the street. It then developed a knock, so I yanked the engine out and replaced it with... Get this... a 2.2 TBI common block engine out of a 1989 Shadow that had an automatic tranny. I grabbed everything, and I do mean everything. Wiring, computer, the whole kit and kaboodle. I had to get an oil pan, steering pump bracket, exhaust manifold, breather box, gas tank, fuel lines, and other odds and ends, which all came form a 1992 Dakota that had a seized 2.5 TBI with a (missing) 5 speed. After about 50 hours of tedious wiring, I got the original wiring from the bulkhead connector married to the computer. I have been told by many MoPar guys that because of the age, and since the A/T was the original tranny, and yada, yada, ya I should be okay. I have verified that the engine is getting electricity and that the lights, wipers, and all of the other stuff works as it should. As a side note, I had to use the waterpump assembly (not just the replaceable impellor part) from the 88 2.2 along with the 88 alternator bracketry and setup. The trickiest part of all on this swap was drilling and tapping three holes for the motor mounts. A warning to anyone doing the reverse of waht I did. If you get an engine from a truck, you will have three extra mounting holes. Keep the original bolts form the truck application and puth them back in the three holes you do not use. That is, seal up the holes with silicone and torque the bolts down as per the manual. I do know one of the holes on the driver's side (in the truck) goes all the way through the block.

Well, now you know how to build what I have, an 892 Dodge Shakota. If it does not pan out, I will find a bellhousing for a v6 or v8 and put my old Polyhead 318 in the truck!

By the way, I have parts for an 89 Shadow if anyone needs anything. I am also selling the almost complete 2.2 I yanked.

Blessings,
Sasky
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