Jesse James

K so i'm kinda confused on what the difference is. i've got an H.O. sittin in the XJ that i'm tearing apart as i need stuff for mine and i'm just unsure of what the difference is/ if there is anything transferable to squeeze some more power out of mine. the H.O. is in a '92 and mine is a regular 4.0 in a '00 if that changes anything.

Anyone know?

Thanks in advance.


Jesse J.

OnlyInMyXJ22

Yours is a Power Tech in the 2000, which is basically the new name for the H.O. There will be no benefit, if anything it will be a small set back.

BuckB91XJ

yeah, about the only thing you could gain from the 92 HO motor is a 7120 casting number head which breathes a little better. Everything else on your 00 motor is probably better. It should be that way with 8 years of getting smarter time for the engineers in between these 2 XJs. The only reason the 00 doesn't have an equally good breathing head was for emissions and MPG efficiency or so I've read.

a1racer

yeah there is no reason to switch to the 90's stuff the 2000 is good to go just put a good intake an a exhaust and you are alright

Jesse James

ya when business slows down a bit i'm gunna fab up an intake and i've got a nice Magnaflow just waitin to get put on

thanks for the input everyone.. as usual you havent let me down