Thread: Transfer case interchange ability

Originally Posted by TD5_Fender

I have just put an LT230 from a 98 auto 300tdi disco into my TD5 Defender and had no problem. The transfer case out of my Defender is now bolted to the ZF as well.
The only thing you have to watch is that the LT230 you pick has the later cross drilled input gear.

Cheers Shane

Yep this is correct and the early LT230's had narrower gears 26mm apposed to the later ones with 28mm wide gears and the early ones had no cross drilled input also there is a mod were as you bolt in an additional plate under the PTO cover which has a beak (so to speak) for catching oil to lube the spline of the output shaft and input gear as they suffer from premature wear

What year did they go to a crossed drilled? What is the advantage of the crossed drilled and what is its purpose- was it for lubrication?

Originally Posted by crash

What year did they go to a crossed drilled? What is the advantage of the crossed drilled and what is its purpose- was it for lubrication?

I am not sure of the year, but the reason is lubrication of the splines. This helps to prevent the premature spline wear issues that plagued earlier LT230 / LT77 combinations.