Dimensions for a CJ T18 input shaft

[fifesjeep]

Hey people.. My next project is to lengthen my rear driveshaft by Removing the Long input shaft in my T18b and making a short input shaft... I'm looking for exact dimensions from the CJ T18 input shafts.. Any help will be highly appreciated... Also, when I make this shaft etc... will I need to replace or make anything else?
Thanks: Fife

[tufcj]

Are you planning on re-machining the long shaft? CJ length replacements are still available. Last one I bought was about $250 for the CJ input and bearing retainer.

I believe that if you re-machine, the splines are deep enough that you cut thru the case hardening, so you have to have it rehardened.

Bob
tufcj

[fifesjeep]

I have no plans to re-machine the Shaft.. I'm just going to make a new one out of 4140 or 4340.. and then heat treat it and then stress relieve it... making it a little stronger than the stock version. I can save easily $200 if I make it myself... No-sense in wasting money... on something you can do!... I just finised making a PTO shaft for a guy... Made it out of Stainless Steel.

[tufcj]

Pretty complex machining, as the input shaft is also 4th gear. You would need to machine the gear plus the cone and teeth for the syncro. I have a spare buried in my shed, it would be way too difficult to measure and post all the dimensions.

Bob
tufcj

[fifesjeep]

My buddy has one in his shed.... it's a ford T18 so, I'll take it apart and take the measurements... Will I need anything else when switching to the Ford type?