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Discussion Starter #1
Anyone use the Roverdrive LT230 high-cap TC sump cover? (The one with the cooling fins)

Info on Roverdrive site says it "may" not work with V8 DII due to exhaust placement. Just wondering if anyone has experience with this unit?
 

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I have never heard of it or the need for a t/case cooler. If your geas and bearing are you, you run a 85/140 gear oil and change it every 20,000, you don't need additional cooling cause it has never been an issue for this t/case.
 

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Discussion Starter #3
It'd be nice to keep the TC cooler on longer drives. After a little while it starts to bake the cabin pretty well, especially in the summer.

I don't think it will work, though. Looks like only about a couple of inches clearance to the exhaust on the top end of the sump cover.
 

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It is not the t/case causing the heat in the passenger compartment, it is the engine and tranny, leave the t/case alone. By the way, when was the last time you changed all your t/case, tranny and diff fluids. Might want to check out my major service list at the top of this section and do it along with the front drive shaft.
 

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It is not the t/case causing the heat in the passenger compartment, it is the engine and tranny, leave the t/case alone. By the way, when was the last time you changed all your t/case, tranny and diff fluids. Might want to check out my major service list at the top of this section and do it along with the front drive shaft.
all fluids changed less than 1,000 miles ago. major service already done. FDS already done (see signature)
 

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The other reason I say a cooling unit is not required is, back in the late 60's and early 70's, I ran full size modified Blazer with the 203 t/case, which is a chain drive, which are usually the hottest, and each of them had a temp sensor and in Arizona, they never ran over the 160 range.
 

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The other reason I say a cooling unit is not required is, back in the late 60's and early 70's, I ran full size modified Blazer with the 203 t/case, which is a chain drive, which are usually the hottest, and each of them had a temp sensor and in Arizona, they never ran over the 160 range.
Point taken. I'll just crank up the A/C a little more and not worry about the TC. Thanks :beer:
 

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Might try recharging your a/c, they do leak down, I did mine a couple of weeks ago and boy is it a lot colder now. I have had to recharge mine about once every 3 or 4 years to maintain a cold breeze.
 

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I have never heard of it or the need for a t/case cooler. If your geas and bearing are you, you run a 85/140 gear oil and change it every 20,000, you don't need additional cooling cause it has never been an issue for this t/case.
Good advice.

In the past my transfer case would leak, but only when towing a heavy load which indicated it was getting pretty hot.

After I moved up to the heavier 75/140 gear oil(synthetic) in the transfer case- it no longer leaks while towing.

In the last year I drove 25,000 miles(half of those towing) and changed the transfer case fluid(12 month interval) and was surprised at how nasty looking it was.

Curious of the price of the cooling fin/sump cover?
 

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Good write up, but he never mentioned testing the operating temp before and after the sump was installed so it is up in the air if there is any benefit to adding one other then you will have a little extra fluid which can lower the temp.
Just go to the heavier 75 or 85/140 and don't worry about it.
 

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Call Justin, over at lucky 8. He's had them for a few years now. But I do not know of anyone running one.

Lucky8 Llc. - Take the road less traveled....

Here is one guys take on it, with a write up. www.discovery2.co.uk - Transfer box Sump
Thanks for doing that.

I wish the write up did indeed have a before and after. The guy who helped me with my heads and let me use his tools at his shop does work on VW's built for racing- both off road and on road applications. Around his shop I noticed that all the performance/racing diffs had cooling fins. So it must do something, but whether this little cover makes much of a difference who knows. I might rig up something to see what my transfer case temp is on this next long haul, based on that I might try one of these covers out and let you know if it made a difference or not.
 

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Thanks for doing that.

I wish the write up did indeed have a before and after. The guy who helped me with my heads and let me use his tools at his shop does work on VW's built for racing- both off road and on road applications. Around his shop I noticed that all the performance/racing diffs had cooling fins. So it must do something, but whether this little cover makes much of a difference who knows. I might rig up something to see what my transfer case temp is on this next long haul, based on that I might try one of these covers out and let you know if it made a difference or not.
yeah, my old M3 had a finned diff, I assume the factory wouldn't spend the money to engineer something no one would ever see if it was a waste;

but the other point is i don't think you'll be able to fit the cover without hacking up the exhaust...
 

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My apologies for the above write up I linked (I was on the crapper). More of a tech/install, than the before and after... If your that worried about cooling, you could plumb up something with a little ingenuity.
 
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