[4doorbmwpower]

I know a couple people have done this, but i cant seem to find the DIY or info i am looking for. I wanted to know if anyone knew exactly what fittings (NPT to AN type) i would need IOT do a custom TC on my 07 AT 335i. Also the locations. Anyone have some guidance and forgive me if this is covered my search yeilded nothing.

[135Pats]

Originally Posted by 4doorbmwpower

I know a couple people have done this, but i cant seem to find the DIY or info i am looking for. I wanted to know if anyone knew exactly what fittings (NPT to AN type) i would need IOT do a custom TC on my 07 AT 335i. Also the locations. Anyone have some guidance and forgive me if this is covered my search yeilded nothing.

I'll PM you when I get home tonight. I was ready to launch into this project and gamed it out very, very thoroughly with ABRHouston. In the end, it's difficult and likely not cost effective to do it right. It's physically doable but after they did some pretty extensive mock up work, fluid pressure testing, and thinking on a shop car they decided it was not viable for them or the end customer.

A larger, billet transmission pan is what we need. More fluid capacity will be of greatest use IMO.

[Cloud9blue]

Originally Posted by 135Pats

I'll PM you when I get home tonight. I was ready to launch into this project and gamed it out very, very thoroughly with ABRHouston. In the end, it's difficult and likely not cost effective to do it right. It's physically doable but after they did some pretty extensive mock up work, fluid pressure testing, and thinking on a shop car they decided it was not viable for them or the end customer.

A larger, billet transmission pan is what we need. More fluid capacity will be of greatest use IMO.

Hey 135Pats, never got around to thank you for that message on this matter. Very insightful. Was thinking about having my shop to mount one too, but as of now, think I will just stick to changing the fluid every year.

[135Pats]

Originally Posted by Cloud9blue

Hey 135Pats, never got around to thank you for that message on this matter. Very insightful. Was thinking about having my shop to mount one too, but as of now, think I will just stick to changing the fluid every year.

No worries dude, glad it was helpful.

Yea I'm strongly of the mind that clean fluid and the potential for larger central fluid capacity is the best practice with the transmission. A few folks have dedicated coolers, i'm not remotely convinced they are helping at all. In some cases, it's likely they are creating unnecessary stress on the entire fluid system. The routing is also a PITA, and the E8x is easier in this regard as we have more space in the ducting area. It's far more complicated than I had originally thought it would be.

Hey nice bike

[4doorbmwpower]

thanks curious to hear what you got. It doesnt LOOK so hard. I was planning on putting it in the passenger wheel well. was the tranny pressure an issue? like a cheap pump can eliminate that. I remember someone did it. hmmmm

[135Pats]

Originally Posted by 4doorbmwpower

thanks curious to hear what you got. It doesnt LOOK so hard. I was planning on putting it in the passenger wheel well. was the tranny pressure an issue? like a cheap pump can eliminate that. I remember someone did it. hmmmm

Yes, a big one. It's extremely sensitive to changes in line length. Far, far moreso than the oil pumping system. Why that is i'm not sure.

Full details tonight.

[Cloud9blue]

Originally Posted by 135Pats

Yes, a big one. It's extremely sensitive to changes in line length. Far, far moreso than the oil pumping system. Why that is i'm not sure.

Full details tonight.

I strongly suspect that these ZF transmissions don't have a oil pump by itself, and only uses the pressure generated by the torque conveyor and spinning gear sets to push fluid through stock heat exchanger, which is probably why the heat exchanger is located at the lowest point possible on our car and taking up bottom portion of our AT specific radiator.

[Torgus]

Originally Posted by Cloud9blue

I strongly suspect that these ZF transmissions don't have a oil pump by itself, and only uses the pressure generated by the torque conveyor and spinning gear sets to push fluid through stock heat exchanger, which is probably why the heat exchanger is located at the lowest point possible on our car and taking up bottom portion of our AT specific radiator.

Unless I am mistaken most integrated radiators/tranny coolers have the tranny part at the bottom of the rad. I assume there is a reason for this...

If the length of piping is a concern why not bypass the stock and use a dedicated? even with the exact same piping length(if it is an issue) you will get better cooling.

As said above it should be very possible to keep the pressure at an exact psi.

[Cloud9blue]

Originally Posted by Torgus

Unless I am mistaken most integrated radiators/tranny coolers have the tranny part at the bottom of the rad. I assume there is a reason for this...

If the length of piping is a concern why not bypass the stock and use a dedicated? even with the exact same piping length(if it is an issue) you will get better cooling.

As said above it should be very possible to keep the pressure at an exact psi.

There isn't any room around where the stock heat exchanger is (FYI, the stock is not a radiator, but just a small heat exchanger that takes the thermal from the trans oil to the engine coolant, which then goes into the bottom part of the radiator). To the right (passenger side) you have the radiator and intercooler taking almost all of the space. The only way is to move it to the driver side front wheel arch. But a lot of us plan on using that space for the ER oil cooler too... Maybe another way is to move the whole thing backward, there should be some space just behind the rear diff to mount a small radiator...

[TheeGovernor]

Originally Posted by 135Pats

Yes, a big one. It's extremely sensitive to changes in line length. Far, far moreso than the oil pumping system. Why that is i'm not sure.

Full details tonight.

I would like details. If this is the case then i fell my tranny would be under water from all the abuse. My lines run to driver side well. I havent had any issues with my transmission.

[4doorbmwpower]

im interested. maybe i can come up with a cheap effective solution. I got some guys that work on twin turbo lambos to help out when i get back from this deployment.

[135Pats]

Edit: i'll just post it here i'm lazy

i'm not saying it's impossible or inherently dangerous. But it's appreciably more difficult than just saying "here's some line, some AN fittings, and a core. Tada". I was ready to throw a good deal of money at this and ABR is in the business of making money. We both determined that it wasn't viable. For that matter, it's a billet pan that we're now exploring.

Meanwhile my trans suffers. Seems like it slips 3rd more and more every week.

I was actually in the process of having Alex fabricate a dedicated cooler for my car and a local car that was being used to test and do R&D. We had to call it quits because it just wasn't remotely cost effective, doing it right is not a $5-800 type proposition. All the one-off versions look nice, but are not particularly impressive in terms of performance. Notice you'll never see actual data from the one-offs that have been put together. It can be done, but doing it right is a much more serious endeavor than a bigger oil cooler.

There are a few main issues

There isn't enough space for a good core in the driver's side ducting. This is on an E8x, which has larger ducting than the E9x. You'd have to fab up extensive bracketing and one-off new shrouding for the brakes. It's a huge PITA to do right with a large core.

Another issue involves getting to the transmission cooler lines. It goes directly in front and under the crankshaft. the heat exchanger is right in front of the power steering pulley. The boost tube is directly next to it- and the lines go towards the middle of the car.

So, the exchanger would have to come out- and the aluminum tubes cut/welded on with AN fittings. then AN fittings plumbed 180* to go underneath the drivers frame rail. Plenty doable but again, not simple. A dedicated exchanger could get around this, and to those who have done it have at it.

With that said, I bet no one who has done a conversion has the data to prove it's efficient.

[4doorbmwpower]

....and with that.. tranny cooler custom idea is scrapped.. anyone wanna buy a brand new oil cooler core? 19 row and some sweet fittings?

[danniexi]

Originally Posted by 135Pats

Edit: i'll just post it here i'm lazy

i'm not saying it's impossible or inherently dangerous. But it's appreciably more difficult than just saying "here's some line, some AN fittings, and a core. Tada". I was ready to throw a good deal of money at this and ABR is in the business of making money. We both determined that it wasn't viable. For that matter, it's a billet pan that we're now exploring.

Meanwhile my trans suffers. Seems like it slips 3rd more and more every week.

I was actually in the process of having Alex fabricate a dedicated cooler for my car and a local car that was being used to test and do R&D. We had to call it quits because it just wasn't remotely cost effective, doing it right is not a $5-800 type proposition. All the one-off versions look nice, but are not particularly impressive in terms of performance. Notice you'll never see actual data from the one-offs that have been put together. It can be done, but doing it right is a much more serious endeavor than a bigger oil cooler.

There are a few main issues

There isn't enough space for a good core in the driver's side ducting. This is on an E8x, which has larger ducting than the E9x. You'd have to fab up extensive bracketing and one-off new shrouding for the brakes. It's a huge PITA to do right with a large core.

Another issue involves getting to the transmission cooler lines. It goes directly in front and under the crankshaft. the heat exchanger is right in front of the power steering pulley. The boost tube is directly next to it- and the lines go towards the middle of the car.

So, the exchanger would have to come out- and the aluminum tubes cut/welded on with AN fittings. then AN fittings plumbed 180* to go underneath the drivers frame rail. Plenty doable but again, not simple. A dedicated exchanger could get around this, and to those who have done it have at it.

With that said, I bet no one who has done a conversion has the data to prove it's efficient.

is this why you say we need a larger radiator to help offset the ATF temps?

what about the auxiliary radiator (1M, 335is)? does that no provide sufficient cooling of the ECT therefore the ATF?

more fluid capacity would make sense as well.

[135Pats]

Mishimoto said they'd look into it like 4-5 months ago, tons of people expressed strong interest. Nothing since. It's not their fault either, they make really nice stuff and their 6MT main rad looks awesome. It's not as easy as it looks....

[4doorbmwpower]

they released it.. the Mishimoto radiator.. its out brah.. look it up it was on this fourm like last week

[135Pats]

Originally Posted by danniexi

is this why you say we need a larger radiator to help offset the ATF temps?

what about the auxiliary radiator (1M, 335is)? does that no provide sufficient cooling of the ECT therefore the ATF?

more fluid capacity would make sense as well.

That's an interesting idea, the aux radiator and fan. I've never tried so I won't speculate.

But yes a billet pan would be awesome. The OE design can be substantially improved upon in terms of total capacity and cooling. So that's what i'm looking into.

[TheeGovernor]

I would love to datalog my transmission temps. Give me an idea of what you would like me to do. I can disconnect my cooler if need be.

[135Pats]

Originally Posted by 4doorbmwpower

they released it.. the Mishimoto radiator.. its out brah.. look it up it was on this fourm like last week

6MT only k.

http://www.mishimoto.com/bmw-335i-13...uctdescription

"NOTE Fits manual transmission vehicles only."

[135Pats]

Originally Posted by TheeGovernor

I would love to datalog my transmission temps. Give me an idea of what you would like me to do. I can disconnect my cooler if need be.

That's quite an offer. What will you use to log it? We'd need to know a lot of information and temperature is just one of those factors.

And to be clear, i'm not saying I have all the answers. Hardly.

[135Pats]

Originally Posted by Cloud9blue

There isn't any room around where the stock heat exchanger is (FYI, the stock is not a radiator, but just a small heat exchanger that takes the thermal from the trans oil to the engine coolant, which then goes into the bottom part of the radiator). To the right (passenger side) you have the radiator and intercooler taking almost all of the space. The only way is to move it to the driver side front wheel arch. But a lot of us plan on using that space for the ER oil cooler too... Maybe another way is to move the whole thing backward, there should be some space just behind the rear diff to mount a small radiator...

This about sums it up. It's a royal PITA. So much less space than you'd think.

[Ingeniator]

Originally Posted by 135Pats

That's quite an offer. What will you use to log it? We'd need to know a lot of information and temperature is just one of those factors.

And to be clear, i'm not saying I have all the answers. Hardly.

Did this unfortunately you can't log and run the JB4 at the same time. As I have no plans to install a Cobb on my 335 I won't be able to contribute temp changes under heavily tuned abuse. While JB4 is disabled even aggressive driving does not change trans temp much.

You can log it with autoenginutiy.