where would i get a tranny oil cooler for the MR 6spd , and how would i go about installing it, and how much would the project cost me ?

 

Courtesy of razorlab

Tilton 40-524 Trans/Diff cooler pump
http://www.tiltonracing.com/content...ist2&id=222&m=d

Fluidyne DB-30110 4x11x2 transmission cooler
http://store.summitracing.com/partd...=0&autoview=sku

 

There are probably a number of places to get one if you want to piece the parts together yourself. I think Robispec is selling a complete kit for transmission oil coolers. You might check with him (Robert Fuller). 760-912-4337 or info@robispec.com There may be other sources for complete transmission oil cooler kits as well, I'm just not aware of any...

 

how hard is it to install something like a pump and cooler ?

 

evo drivetrains are meant to fail at the clutch so that the rest of your drivetrain wont take the beating. it was designed to be the weak point. so when everyone is upgrading their clutches drivetrains, in this case the tranny will fail at some point. it's cheaper to fix a clutch than a tranny. I guess it was the compromise after all those eclipse half-shafts were getting shattered.

 

Launching it repeatedly isn't what breaks it, so that's not a worry either. Yes, you can break any trans from 7k dumps (t-case mainly), but as I keep saying, I have 250+ passes on my 6spd, and my 250th run was with a 6000rpm 2-step launch and fully powershifting all the way down the track with not even a hint of grinding or failure, so it really only comes down to road racing or no road racing.

 

The MR and its 6 speed are a great combo if you plant to keep the car relatively stock. For a daily driver i think the 6 speed is great. Once you mod and make more power, the 6 speed is pretty bad, whether road racing or drag racing. I dont think anyone can say that road racing or drag racing is harder than the other, it is more that high power high RPM shifitng is what kills the 6 speed. I road raced with the 6 speed in the car early on and yes 4th started grinding. While drag racing, high rpms became very very sloppy like shifting from 2nd to 5th, or 3rd to 6th. Anyway...I cracked the ACD and shattered the input shaft, amongst other internals i am sure. All in all I ended with a Shep 5 speed which was an amazing difference. NOw my shep trans is grinding 2nd and 3rd but I also shift at 9500 LOL. Good luck

Shahin

 

I totally disagree again, DOOMID. There is absolutely NOTHING wrong with the 6spd when modding and drag racing in terms of its strength. As we've already said, gears 1-3 are STRONGER than in the 5spd. They are very beefy, but then 4-6 are smal with tiny teeth.

You are totally off, imo, about the main cause of failure being high power/high RPM shifting. That is NOT what is causing these failures we are talking about. We have been saying over and over in this thread and in the huge Motorsports forum thread that it's not power - it's extreme heat caused by sustained road racing. Drag racing doesn't generate anywhere near as much heat. The shock can be bad, but it's not what is causing these failures. As I've said probably 3 times in this thread, I had 250 drag runs all with hard launches and very hard shifting (even powershifting) with no problems. The trans lasted through 3 clutches, the 3rd of which was a grabby 4-puck, and it shifted just as good on the 250th pass as it did on the 1st. Also, the problem we're talking about doesn't have anything to do with grinding...that is not a symptom of the 6spd problem, and road racing would not cause that unless you were damaging the synchros with your shifts. I didn't manage to damage my synchros even with those 250 drag runs and nasty shifts.

Maybe you had a problem due to making 600whp, but that can happen to a 5spd, too. In fact, it has happened to many high powered Evos with 5spds.

 

too bad our 6spd was not built by audi...1000hp drag audi s4 uses stock 6speed..no issues..unreal

"The transmission, TORSEN center differential, front differential (with addition of a Quaife LSD), rear differential, driveshaft, and rear halfshafts are all 100% stock S4 items. With well over 1,000 horsepower being sent though the driveline the vehicle represents a very impressive testament to Audi OEM engineering. "





http://www.audiworld.com/news/06/aud...ds-in-poland1/

 

...Guess us 99%ers should be ok then........since we don't really use our cars for the intended purpose

 

Bingo! If you want to be a track rat, get a dedicated track car and beat on it all you want. Something like a spec Miata...

Beats me how someone who's stretching to make the nut on a 35K car will take same car to a track and flog it with reckless abandon. Any car regularly tracked will require a lot of maintenance and some repairs. Wreck it and you can walk to work on Monday.

MRs are great - the "weakness" in the six-speed is irrelevant for those who don't track them. Probably half of those failures had other contributing causes, such as using the wrong lube.

 

Yes, you should be ok. Don't be butt hurt if you don't race it. Be happy that you don't have to worry about your trans failing.

 

Yeah but in reality you are talking about a car that is more like a car show. That Audi looks like a fully sponsored Audi where many combined manufacturers created a beefy and improved drivetrain.

Don't go too far, look at what happen to one of the brand new 06 C6 vette Z06 when Road and track was doing the road testing, the rear differential completly disintegrated during the test.

Look WOTM Supra, they do have the stock tranny but look how many times they actually destroyed the rear Diff. The thing is that at one point one of the components is going to give up.

There is a vendor that has been working for over two years on a stroker kit on a Subaru STI. Their kit offers a 2.8 liters very powerfull, the problem is that the engine produces so much torque that they aren't able to offer a reliable competitive clutch to match their own performance engine.

As you can see, my list goes on and on. All cars have weak points on their drivetrain, eeven that Audi that you mentioned.


Carlos

 

Well, primarily the main differences is that the Evo gearbox is transversal and the Supra is in line. Just the configuration itself gives the advantage to the Supra.

A transvesal gearbox is always a much bigger challenge when you deal with power.

Carlos

 

What happend if you get the 6 speed trans rebuilt, what are the chances of it breaking again? I'm kinda worried because I just bought my evo 9 mr and was planning to do some road racing. More I read about these transmission failure, i'm kinda disappointed in myself and should've picked up a regular GSR. =*(