just be sure your your clutch fork is not fouling on anything, this happened to me once and all it was it was hitting on the fuel line that comes up from the transmission tunnel, i found that it wouldn't engage into gear no matter the amount of adjusting.

When i changed my 4 speed to a 5 speed in my ute i got supplied the clutch fork and the bearing carrier and i know that the lengths are different, the 5 speed bearing carrier is a bit longer, i think in your case it shouldn't matter that much, i would be double checking everything to make sure.


thats a pic of the difference between the two.Seeing that you are using the 4 speed it shouldn't matter, but i could be wrong.i know if you use a 5 speed with the 4 speed bearing carrier it doesnt reach the pressure plate, not sure if it matter the other way around? it shouldn't, but i haven't come across it.