Originally Posted by
turbo84voyager
Best advice I can give is Don't do it. I fell for this a few years ago. I believe you can get away with it better with a 2.2 then a 2.5 but still a ported swrl is the way to go. As for a cal, im not sure about the 2.2 but without one on a 2.5 the thing will barely run right trying to set the timing if you try to set it to stock 12 degrees and it is a complete dog. I have heard that it is not nearly as bad on a 2.2 but I dont have personal experience with that combo. All I know is I spent 2 years trying to tune my g-headed 2.5 in my van and after all the time, and trying everything possible to fine tune the timing ( very small window between too little timing and high EGT's and knock from too much timing) I pulled the head and put a ported swirl on. Performance was as good or better and much better driveability.