Kraton Centre diff oil - 500000cst too thick?

[Asus127]

Evening guys and girls

Just changing the centre diff which I'm new to on my kraton but it's taking forever with the 500000 my LHS has given me. Is this oil too thick or am I just being impatient, waiting for it level out?

Keep topping it up, rotating the gears but it's like it's not doing much.

Plus... How the hell do I get rid of all these small air pockets?

Thanks

 

[Dan B.]

Not too heavy at all. It helps a lot in controlling the diffing out on the 6s rigs. A lot of guys run 1-mill. Just top it off and walk away. Go eat a sandwich. Do your Wordle. Come back later and, “look ma, no more bubbles!”

 

[Tex Koder]

Evening guys and girls

Just changing the centre diff which I'm new to on my kraton but it's taking forever with the 500000 my LHS has given me. Is this oil too thick or am I just being impatient, waiting for it level out?

Keep topping it up, rotating the gears but it's like it's not doing much.

I'm about to do the same.. for my center diff(s)
I got a bottle of 100K from my LHS the other day.

Plus... How the hell do I get rid of all these small air pockets?

Thanks

View attachment 365209

A vacuum chamber.

 

[Greengaunja]

Some, like me, run 20 million CST in our center differentials. Runs almost like a spool yet slips when it really matters. 500k is far from too heavy, I run it in my rear along with 1m upfront for a road setup.

 

[Asus127]

I'm not the patient type of person when it comes to these things lol. Waiting days for the post man turn up with it being a bank holiday.

Half a hour later and I'm at this point. Going to top it up a touch and leave it over night you think. As I don't have a vacuum chamber at hand lol

 

[Greengaunja]

I'm not the patient type of person when it comes to these things lol. Waiting days for the post man turn up with it being a bank holiday.

Half a hour later and I'm at this point. Going to top it up a touch and leave it over night you think. As I don't have a vacuum chamber at hand lol

View attachment 365210

This is why I like doing my shocks and differentials in the evening. I just leave them overnight and assemble them the next day. Time: poor man's vacuum chamber.

 

[Asus127]

I'll see what it says tomorrow. Won't be funny if I come back to it in the morning and it's leaked all out the bottom lol.

 

[Greengaunja]

I'll see what it says tomorrow. Won't be funny if I come back to it in the morning and it's leaked all out the bottom lol.

Well, you would learn next time to make sure the o rings were put back lol

 

[Tex Koder]

.

I'm not the patient type of person when it comes to these things lol. Waiting days for the post man turn up with it being a bank holiday.

Half a hour later and I'm at this point. Going to top it up a touch and leave it over night you think. As I don't have a vacuum chamber at hand lol

View attachment 365210

I'll see what it says tomorrow. Won't be funny if I come back to it in the morning and it's leaked all out the bottom lol.

 

[Asus127]

Well can't be any worse then what it was. Didn't have any shims inside

 

[332_RC]

Evening guys and girls

Just changing the centre diff which I'm new to on my kraton but it's taking forever with the 500000 my LHS has given me. Is this oil too thick or am I just being impatient, waiting for it level out?

Keep topping it up, rotating the gears but it's like it's not doing much.

Plus... How the hell do I get rid of all these small air pockets?

Thanks

View attachment 365209

Looks good. You can pop the bubbles w a toothpick if you desire. I always set a timer for 15min to let level out. Fill looks ok to me.

 

[Asus127]

Well I've topped it up a touch more and with the sun cog, should be alright

 

[332_RC]

Perfect. I leave one screw out when I assemble to let air or overfill escape. Tighten 3 even back-n-forth to snug, then the last, if any fluid escapes, ok, then tighten all up- loctite too

 

[BruceRC]

Well I've topped it up a touch more and with the sun cog, should be alright

View attachment 365222

Looks good to me.

 

[HoppyHop84]

I change my diffs fluids out all the time and I am super impatient. What helps move this process along for me is I use my heat gun on low setting to work out the bubbles and get the oil to settle in. Cuts down time, big time. Obviously careful it’s gonna get hot and don’t to hot you risk trashing anything on the diff. Use same method for my thicker shock oil.

 

[Big Kid]

Don't fret over some air bubbles as it really does not matter.
A bit of air space is fine as it help keep the fluid in as the assembly heats up with use !!!
If fill was 100% fluid when assembled, heat from use would expand fluid and force it out past the o-rings on output cups or the gasket .. so your just fine IMO

As too 500k center fluid, I track run both my rigs and that is about as thick as I go .... there and thicker the back end traction becomes too much and tracking straight out of corners under hard acceleration trends to blow out the rear end making steering control quite challenging.

 

[Asus127]

Thanks all. Diff is all back together with 0 leaks, woop. Start putting it back together tomorrow me thinks

 

[Dan B.]

If it’s a basher you’ll enjoy the 500k center and may even choose to go higher next time. If you’re track racing the chose weights are dramatically lighter. But a good track racer (traveling much more slowly and usually with lesser voltage) doesn’t need to worry about diffing out and exploding tires, right?
Give it hell and get back to us with your observations!

 

[Asus127]

If it’s a basher you’ll enjoy the 500k center and may even choose to go higher next time. If you’re track racing the chose weights are dramatically lighter. But a good track racer (traveling much more slowly and usually with lesser voltage) doesn’t need to worry about diffing out and exploding tires, right?
Give it hell and get back to us with your observations!

Yeah I just want to kick it's head in and then moan it's broke

 

[Dan B.]

Yeah I just want to kick it's head in and then moan it's broke

That’s the spirit!