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Unread 01-04-2014, 08:49 AM   #1
mwroseberry
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JP Fab twin stick for Dana 300 question

Those with the JP fab twin stick. If I don't open my transfer case up what will my shift pattern be and what will/won't it be able to do with just the twin stick kit installed? Also how does this effect how hard/easy it is to shift into gear.

Thank you,
Merritt

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Unread 01-04-2014, 12:28 PM   #2
Spieg8
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It should be a little easier to shift. I've always removed the link pin so not 100% sure, but my understanding is that you won't be able to use any additional settings (2LO-rear, 2LO-front, or 2HI-front). On the positive side, you won't be able to put the front and rear in different HI/LO range at the same time. It's not that difficult to pull the TC apart, so if you're going to pull it to install the twin-stick you may as well do it (good opportunity to install fresh seals too).
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Unread 01-04-2014, 01:05 PM   #3
zillla
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I used a JB Fab twin kit on my D20.. My shift pattern is back for high forward for low. Both sticks. Nuetral is in the middle. The throw is much shorter and more positive than the jamm-omatic stock set up..
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Unread 01-04-2014, 09:33 PM   #4
John N
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With twin sticks on the D300 you should be able to add shift positions for 2 low in the front or rear. You will not get 2 high on the front without removing the shift interlock balls.
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Unread 01-05-2014, 08:28 AM   #5
mwroseberry
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So without the pin removed my options are: Both axles in HI, Rear axle in HI front in N, Rear axle in L front axle in N, Front and Rear in L, Rear in N and Front in L?

Please correct me if I'm wrong.

Thank you,
Merritt
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Unread 01-05-2014, 08:40 AM   #6
BlueRubiconrich
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No you will not get front in low. I've got a Scout Dana 300 with twin stick
behind a T18.When I pull onto a trail I shift the rear into low and put my T18 into first. Than I can move up and stop shift the front and and lock the hubs.
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Unread 01-05-2014, 08:52 AM   #7
zillla
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Here's the pattern I have..


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Unread 01-05-2014, 09:27 AM   #8
BlueRubiconrich
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to get front 2 wheel low you have to remove a ball not a pin.
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Unread 01-05-2014, 09:59 AM   #9
hole
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Weird, to my knowledge my D300 has never been opened up but I have 2-low in the front with my JB Fab twin stick.
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Unread 01-05-2014, 10:12 AM   #10
mwroseberry
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So you're saying I completely lose 4x4 low by changing shift linkage. I find this very hard to believe. I would agree I would not have front axle ONLY 4L without removing the lockout. That makes since but I don't see how I would lose 4x4 low.
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Unread 01-05-2014, 10:36 AM   #11
Spieg8
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Quote:
Originally Posted by hole View Post
Weird, to my knowledge my D300 has never been opened up but I have 2-low in the front with my JB Fab twin stick.
I've heard this sometimes happens with some TC that have a lot of wear in the mechanism. If the plate that holds the ball gets wallowed out (clearance enlarged by wear and tear), it will allow the shifter to move to positions it wouldn't otherwise be able to.
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Unread 01-05-2014, 10:43 AM   #12
texasdave
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Nope both sticks forward gives you 4wd low. Basically all a twin stick does is it allows you to control front and rear indidually. With 2shifters you can use 2wd low. If you break rear drive shaft you can use rear neutral and front wheel high to get you home. A Dana 300 has poppet balls and springs on the shift rails and in order to use the front only you have to modify the shift rails. Some off roaders use it for front digs. CAUTION: do not intermix selections ie front low rear high rear low front high or you'll crater your transfer case. If you don't modify your shift rail the poppets prevent this.
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Unread 01-05-2014, 08:37 PM   #13
TKFireman
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There is a way to modify the shift rail and leave the balls installed that allows you to use front wheel high or any selection you want, and keeps you from being able to put one axle in high and the other in low. Also by keeping the balls in place, the case is less likely to jump out of gear. I did it in my case, but its been a while. You can Google it, I can probably find pictures of when I did it, but it would take me a while to find them.
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Unread 01-05-2014, 08:49 PM   #14
John N
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The question seems to be, can you get front wheel low without any internal mods? In my case and friends, yes. I've done front digs in low, the interlock balls are still in place in my transfer case. I have the Lomax 4:1 gear set, the internals in my case are pretty fresh, not worn.
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Unread 01-05-2014, 10:02 PM   #15
CSP
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Quote:
Originally Posted by mwroseberry View Post
So you're saying I completely lose 4x4 low by changing shift linkage.
No, that's no what was said at all. As mentioned, both sticks forward = 4low, no mods required.
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