scout model 20 twinstick?

[sandmanb]

can a scout model 20 twinstick be used in stock form in a jeep t-18/20 setup or does the caseing have to be changed out or is this even an option?

[scotty]

if the scout 20 has the "large" index hole(about 4" for the large,about 3" for the small) then it will swap right on. i have a later model single stick scout 20 that im gonna use someday,which does have the large hole. very few scout 20s had the twin sticks,so this must be a late 60s case,so im not real sure what it should have-im alittle unfamiliar with the older scout stuff.

r u sure its a 20 and not an 18? scouts used the model 18,too. if its an 18 you will need its matching input gear,since it will have a 2.46 vs 2.03 low range.if youre going to use this combo in behind a t18,the input gear must have 6 internal splines.if it is a 20,the factory jeep 20 input gear will work.

ok if the housing does have ths small index hole,you will need to swap all the guts ito a later model large hole 20 housing,which is not hard. this is what i did to use my spicer 18 behind my t18.

one word of advice: if the xfer has the big drum E brake on the rear output,you will need to relocate the fill location on the new 20 housig that youre using.its stock location is on the rear,and will not be possible to get the fill plug in and out due to the new rear output and drum. locate it to the side,where it is on the origial housing. i found this out the hard way :mad:

last and not least,there will be an interlock pill that youll have to remove wether its an 18 or a 20 in order to get the full range of drive options.

further ques? smile.gif

[Tubro]

The twin stick 20 was in the 800 series, not an easy find really. If you have access to one and already have a D20, then just swap the parts needed to use the twin sticks. I've got a 67 Scout 800 with a twin stick 20, but haven't pulled it apart and looked at it.

The scout has 2wheel Hi/lo and 4wheel Hi/Lo, remove the interlock and get Frontwheel Hi/lo

[scotty]

to swap the twin stick shift tower and rails,pretty much a complete case disassembly is neccessary. it may or may not be needed,depending on the size of the index hole.

turbo,your not sure if your twin stick 20 has a large or small hole?

if it has a large hole,you can stick the whole thing right onto the t18.

if not,youll have to disassemble both cases,and assebmle whatever gears(gears and all other internals for both cases should be the same),along with the twin stick shift tower and rails onto the later large hole 20 housing.

thanx for the tidbit on the scout 20.i knew they were in the late 60s,but didnt know bout the 800 series.

[Tubro]

Nope scotty never looked. Its on a T18, but I don't know if its a large hole or small, they put both in Scouts, and I don't know what year they switched. I have a T18/D20 with a single stick out of my 76 parts rig. Its a large hole, but who knows about my older one. I need to pull it out and do a little work on it anyway.

[scotty]

turbo-another question:
in your scout 800,when you are in 2wd,do you have the left stick all the way down,right stick in the middle position?

-to get 4hi,pull right stick down?

-to get 2 lo,you push the left stick up int N,then rest of the way up into low,while leaving the right stick in the middle?

-to get 4 lo,you dothe above,then push the right stick up?

-i assume the interlock pill keeps the right stick from moving up or down when the left stick is in the middle position(neutral)? thus,preventing a fwd only hi or low situation...

is this correct,if not how do your shifters work?

[Tubro]

Let me see if I can remeber without looking! Ok sitting in the seat here is the stick positions

Rear Axle Front Axle
-----------------------
Low Low
N N
High High

2 Wheel high = Left stick down, right stick middle

2 Low = Left stick up, right stick middle

4 High = Both sticks down, left first, then right

4 low = Both sticks up, first left, then right.

I'm pretty sure I got that right. I am just used to doing it, not thinking about it!

Oh yeah and right when they are both in N, you can't move the front axle stick. Which when I pull it out I will fix smile.gif

[ January 14, 2002: Message edited by: Tubro ]

[scotty]

cool,thats what i thot! thanx for the info :cool:

[porkchop]

I have a question to this, I know that the D20 came with two different gear cuts. The one on the manuals is a 20* cut and the autos is a 17.5* cut. This is how it is for jeeps. Were there any differences on the scouts? I am going to go and grab a t-case off a scout tomorrow. It is behind a TF727. I assume it is the large hole but I wonder if it is the 17.5* cut or the 20* cut. I am pretty sure the gears are numbered but are they the same part numbers that were used on jeeps?

[Tubro]

Being that I have two D20s behind T18s in scouts and one behind a 727, I should know this, but I don't. Never looked, But I can tell ya this. If it is this way on a Jeep it is almost certain to be on a scout. So whatever gears you need for a Scout Xfer, just buy em for a Jeep. If there was a way for IHC to not have to make a part they didn't. I know CJ guys steal Scouts D300s and I have heard about putting scout T18s in CJs. I would figure they are the exact same transmissions and Xfers. Although IHC used a Close and Wide ratio T18, and use the T19 which is Wide. I don't see you having a problem.

I would go for it, just follow Jeep logic and I bet it will fit.

[scotty]

PC the scout 20 i have is from behind a 727. leave the input gear attached to the tranny in case whomever buys the tranny might need it. it has a 23 internal splines and is therefore useless to our purposes smile.gif the good news is that the gears are the same.my jeep input gear is the same and meshes perfectly. the 17.5* cut is only used on the d20 behind the th400. im pretty sure everything else,jeep or scout is the 20* cut.

[porkchop]

OK I am pretty sure we figured this out between all of us and the two post about the D20. The Scout D20 will bolt right to the TH400 with the 18-8-43 17.5* cut main input gear. I verified this using the chart on Novak and by looking at the numbers that are on the gears between the two tranny's and t-cases. So now I just need to convert the D20 to twin stick and I will be in there.