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I'm still waiting.....
Kraton BashingBrian's Kraton EXB...
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I hope you get it soon...going with a nice setup there.
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- #10
Guess what, the front diff was practically empty from the factory ? and the center was the same..
Bit disappointed as I got fake droop screws that you can't adjust unless you take the suspension off..
Look at the bolt below there is no hole in it for a hex driver, so you can't adjust it from above ? so I fitted some bolts from a packet of ARA480017 I had laying around, I know Arrma do these bolts on their own also..
Few spares and first upgrades M2C shock standoffs
Droop screws fitted so now all adjustable from above, along with rebuilt diff full of 60k, couldn't get any 50k..
Managed to get one 0.15mm shim on the crown side, diff feels nice and tight..???
Mobil XHP222 grease just in case you want to know, this stuff is sticky as... ?
Quick test fit of the servo ( in EXB colors ? ), can't wait to see how powerful this thing is on max voltage.
Haven't decided if I'm going to stick with the EXB mount or go with my original GKA one..?
Put a longer caphead bolt and flipped it the other way up, also added 2 washers on top of the servo saver just so I could get the whole thing level..
I like the look of the red of the EXB servo mount but the GKA one is much better I think..?
That's it for now.....
Bit disappointed as I got fake droop screws that you can't adjust unless you take the suspension off..
Look at the bolt below there is no hole in it for a hex driver, so you can't adjust it from above ? so I fitted some bolts from a packet of ARA480017 I had laying around, I know Arrma do these bolts on their own also..
Few spares and first upgrades M2C shock standoffs
Droop screws fitted so now all adjustable from above, along with rebuilt diff full of 60k, couldn't get any 50k..
Managed to get one 0.15mm shim on the crown side, diff feels nice and tight..???
Mobil XHP222 grease just in case you want to know, this stuff is sticky as... ?
Quick test fit of the servo ( in EXB colors ? ), can't wait to see how powerful this thing is on max voltage.
Haven't decided if I'm going to stick with the EXB mount or go with my original GKA one..?
Put a longer caphead bolt and flipped it the other way up, also added 2 washers on top of the servo saver just so I could get the whole thing level..
I like the look of the red of the EXB servo mount but the GKA one is much better I think..?
That's it for now.....
jondilly1974
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You can adjust the droop from below if you compress the shocks all the way. It gives you just enough clearance to get a driver in there.
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So onto the rear diff...
There has been a lot of talk about the rear EXB diffs, I've read all the posts on here and I've heard more theory's.
As I'm in the UK I can't get any LSD star plates ( that's what I'm calling them ) so I decided to come up with my own recipe for the rear diff, I can get shims in so many sizes it's crazy so that's what I'm going to do..!!
Lets begin..
Plenty of grease on the outside, there was practically no oil on the inside though just like the front ?
QC on this car is really bad in my opinion..?
I had a shimtastic time doing this..?
Top row is the LSD replacement shims, ( next row is hub axle and camber spacer, they are for later ) all sizes are in MM
Next are the shims to replace the Arrma ones ( ARA709060, ARA709059 ) as they are also out of stock in the UK ?
So this is my recipe, the following will explain everything you need to know..?
Firstly I measured everything individually and noted the best combination of sizes, I had ordered a selection of 10 of each size as I was just planning on experimenting but in hindsight I should have bought 20 of each ?
You'll see that my measurements come up .2 short, but I'll explain that in a minute.
Next I noted the stated size and the actual measured size..!!
Everyone told me, including Arrma you can only use two shims under the pin if you run the 3x LSD plates, well balls to that ?
I tried lots of different combinations of shims above and below the pin, also different combinations of the bigs shims.
In the end, I used one of each of the Arrma shims plus that 0.1 shim, they all happily went under the pin and everything turned smoothly.
So my final setup is everything you see in the picture below EXCEPT the LSD plates..!! this is of course on both sides of the diff.
Sorry I forgot to take a pic of it all laid so you'll just have to believe me that it's all there..?
The big shims support the sun gear really well, once I'd put it all together it was buttery smooth with no play in the drive cups whatsoever.
Best of all it's a totally open diff..???
I chose 20K this time as my other Kraton runs 30K and it doesn't turn in very well, you can see the stack of shims under the sun gear if you look ?
When I re-fitted the diff I squeezed 0.2 on the crown side and the diff is nice and tight and spins freely..
You can see in this pic the double headed droop screws AR727410 that I used too..
Finally just to finish up the rear diff housing, I always put a longer bolt with a nut on the lower tower mounting position as it stops the bolt pulling through the housing ( after a conversation one day, top tip provided by Mitch aka M2C )
Hope that all makes sense, good luck and enjoy your diff building..??
So that's it for now....
There has been a lot of talk about the rear EXB diffs, I've read all the posts on here and I've heard more theory's.
As I'm in the UK I can't get any LSD star plates ( that's what I'm calling them ) so I decided to come up with my own recipe for the rear diff, I can get shims in so many sizes it's crazy so that's what I'm going to do..!!
Lets begin..
Plenty of grease on the outside, there was practically no oil on the inside though just like the front ?
QC on this car is really bad in my opinion..?
I had a shimtastic time doing this..?
Top row is the LSD replacement shims, ( next row is hub axle and camber spacer, they are for later ) all sizes are in MM
Next are the shims to replace the Arrma ones ( ARA709060, ARA709059 ) as they are also out of stock in the UK ?
So this is my recipe, the following will explain everything you need to know..?
Firstly I measured everything individually and noted the best combination of sizes, I had ordered a selection of 10 of each size as I was just planning on experimenting but in hindsight I should have bought 20 of each ?
You'll see that my measurements come up .2 short, but I'll explain that in a minute.
Next I noted the stated size and the actual measured size..!!
Everyone told me, including Arrma you can only use two shims under the pin if you run the 3x LSD plates, well balls to that ?
I tried lots of different combinations of shims above and below the pin, also different combinations of the bigs shims.
In the end, I used one of each of the Arrma shims plus that 0.1 shim, they all happily went under the pin and everything turned smoothly.
So my final setup is everything you see in the picture below EXCEPT the LSD plates..!! this is of course on both sides of the diff.
Sorry I forgot to take a pic of it all laid so you'll just have to believe me that it's all there..?
The big shims support the sun gear really well, once I'd put it all together it was buttery smooth with no play in the drive cups whatsoever.
Best of all it's a totally open diff..???
I chose 20K this time as my other Kraton runs 30K and it doesn't turn in very well, you can see the stack of shims under the sun gear if you look ?
When I re-fitted the diff I squeezed 0.2 on the crown side and the diff is nice and tight and spins freely..
You can see in this pic the double headed droop screws AR727410 that I used too..
Finally just to finish up the rear diff housing, I always put a longer bolt with a nut on the lower tower mounting position as it stops the bolt pulling through the housing ( after a conversation one day, top tip provided by Mitch aka M2C )
Hope that all makes sense, good luck and enjoy your diff building..??
So that's it for now....
Where you bought the shims from? So you have put shims under the pin and under the sun gera without any slop??. I was able to put another 0.2mm shim on the lsd diffs but decided to remove them decided to trust arrma on that LSD design. But the issue is on the diff cup mine doesn't accept more than 0.7mm but when i used 4 0.2mm it had slop like if i had 0.7mm? the QC is so messed up on the arrma shims
I decidee to put the lsd diff from the front to the rear and a build v4 diff with mugen shims and kyosho shims should be bulletproof now but i did screw up the initial grub screw threads on the diff cup i play it doesn't burst open but it was quite tight before i filed the diff with oil
And you didnt have droop screws from factory i had in my version
I decidee to put the lsd diff from the front to the rear and a build v4 diff with mugen shims and kyosho shims should be bulletproof now but i did screw up the initial grub screw threads on the diff cup i play it doesn't burst open but it was quite tight before i filed the diff with oil
And you didnt have droop screws from factory i had in my version
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So from the looks of it, you didn’t use any of your 12x18x0.2 shims?
Lot of info to take in just trying to get things solid before I tear into mine...
Thank you for the wealth of info here sir, well done ??
Lot of info to take in just trying to get things solid before I tear into mine...
Thank you for the wealth of info here sir, well done ??
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No more stock lol
Ordered a set of shims from a ~local bearings shop yesterday, I'll receive them today. 21.83€+10€ p&p. I'll test this solution first as it's totally open diff and if it fails I've got a center diff on the way.
(Edit: I fully expect this to work perfectly and would not order a center diff for LSD plates anymore. Unfortunately I ordered it before I was aware of this solution.)
(Edit: I fully expect this to work perfectly and would not order a center diff for LSD plates anymore. Unfortunately I ordered it before I was aware of this solution.)
Last edited:
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Awesome job ?? this is how they should have been shimmed by OEM - on the OD, not ID
great info thanks!!
