|01-03-2013 08:35 AM|
4.2 is old school, not quite the horsepower of the 4.0. Probably the only real difference.
The AX5, well I wouldnt suggest running it, but like anything you can get away with a lot if you are really careful. But then, I thought that of the Peugeot in my jeep when I rebuilt the reverse set. Lasted a month.
Personally, I would either rebuild what you have and run it, or I would sell it and find an I6 and buy that, or shoot for the V6 and upgrade the drivetrain while I was at it.
|01-02-2013 11:41 PM|
|dino_yj||I have always heard that the trans wouldn't hold up but I didn't know, just wanting my jeep back. In reality I would like to swap in a 4.3 vortec.|
|01-02-2013 10:14 PM|
|WICruiser||I do not know specifically about the 4.2 but everything I have read says that any other engine than the 2.5 would require a major change including engine mounts that are welded to the frame. The AX-5 transmission in 2.5 is not strong enough for anything with more power.|
|01-02-2013 08:19 PM|
2.5 to 4.2? advice and opinions
Advice and opinions on this please:
I own a 93 yj 2.5 mpfi that needs top end rebuilt... I prefer swapping motors since the lil 2.5 is low on horses, and I think I could do this for cheaper than a rebuild.
I found a 4.2 out of a 90 wrangler.... But everyone seems to hate on these motors compared to a 4.0. Why? Has anyone had both? I've had neither. Do you think I would be happy with this swap? Has anyone done this? What are pros and cons of the 4.2?
Any information on the 4.2 , the swap into a 2.5 mpfi jeep, and opinions are welcome.
I have the ax-5 trans... Will it bolt up? Or hold up? This is mainly a street jeep with slight offroading.