Mag-Hytec transmission Pan

[beartrace]

I would like some feed back on the Mag-Hytec (deep dish) transmission pan. Anyone using and with what results? Is the pre-drilled 1/8" NPT fitting in the pan the best place to connect the transmission temp gauge?

 

[EMDDIESEL]

I am ordering one soon. I have heard great things about it. As for the transmission sender, the best place to mount it is in the line to the cooler. You will get the most accurate readings as to your trannies true health there. Readings from the pan will be alot lower. To install the sender You can buy a complete line from Mopar (About $95. 00)or a kit from Jannetty Racing ($45. 00) Check under search and there is a TON of posts regarding this topic with contact info. Good luck

 

[ToolManTimTaylor]

Hope the pic makes some sence ... (a little dark) but this is the DD pan frm mag~hytec



#ad
<BR>

<hr>

Truck Bio:

Y2K+1 3500 4X4 Quad Cab 4:10:1 LSD



Powerpacked (4 inch exhaust,High ram intake,wastgate mod to 38 psi,otto +guages,K&N) , Jakit's Front End Leveling Kit with 255/85R16 BFG http://www.bfgoodrichtires.com/ M/T's Custom Rhino Liner (see Tool Man's truck feature)DeeZee Goodies, WAAG Side tubes with kick~outs Mopar Performance accessories-Sill plates-hitch cover-cargo aux lamp'n'Power, Hadley air systems 150 psi comp and air storage. Diesel Transmission Technology's ~93%TC~&~VB , TC Saver, Mag-Hytec'sDouble Deep Trans pan,DD1's+Van Aken+Autometer Guages. #ad
Check out Tool's Stuff~>Here!<~ <h4>N. E Next Meet info Click ~~>THIS<~~</h4>

 

[John]

I removed my Mag-Hytec Deep trans. pan I had on my Ram for at least two years and replaced it with their new Double Deep model. Both are excellent products, I just wanted more fluid capacity.



As EMDDIESEL stated, the outgoing trans. cooler line is the best place to monitor ATF temps. I chose to add the Mopar replacement cooler line with the integral temp. sensor port. So far, no regrets.

 

[Cooker]

John,

Are you seeing cooler temps with the DD pan???

 

[amsoilman]

beartrace,

You will appreciate the DD pan from "Mag-Hytech".

They work very well, and as far as I'm concerned, the tapped hole in the pan for a temp probe works just fine. True this may be a bit cooler than in the line, but there is not that much difference in the readings. I have done some experimenting for Roy of Mag-hytec fame, and the difference in the two readings are insignificent.



Wayne

amsoilman

 

[EMDDIESEL]

Insignifigant? I have seen tempature differences of 20 degrees or more between a pan mounted sensor or a line mounted sensor. More importantly, its how fast you see the rise, if your trannie is starting to overheat you will know right away if your sensor is in the line going to the cooler. If its in the pan, it could take minutes before you noticed a serious temp increase, ESPECIALLY with a double deep pan which cools the fluid faster plus has more of a tempature "Buffer". If you are not towing or bombing the hell out of your truck, having the sensor in the pan is no big deal. Otheriwsie i would want to know NOW about the temp. Just my 2cents

 

[SlyBones]

Wayne,



Im interested in knowing those test conditions. Seems like the two temps may be similar under no load conditions, but hook up your 12K 5er, add in a large grade, pulling in 2nd or 3rd in fluid coupling mode ( tc clutch unlocked ) and I would have thought the temps coming out of the TC are much hotter than that in the pan. And the better the cooler the owner has installed, the bigger pans, synthetic fluids and all that only add to it.



After all one is measuring the temp right after the fluid comes out on the TC, and the other is measuring the temp after the fluid has ran through the cooler, and returned to the pan and mix with the fluid sitting in there being cooled by my trick DD magtec pan.



Seems like the pan temps would rise slower that the line temps. The line temp tells you what the TC is doing at that monent in time, the pan temp tells you more of an average, and what the rest of the transmission is seeing while the fluid is on its way to the TC.



Please enlighten me.

 

[beartrace]

temp reading

If you locate the sender in the cooler line how high a temp reading will you get for a normal reading. My gauge only reads to 250 degrees.

 

[EMDDIESEL]

My gauge only goes to 250 degrees too and i have the sender mounted in the line. The hottest i have EVER seen mine was about 210 and that was in traffic with the outside temp almost 100 degrees. As soon as you start moving, especially on the highway, the temp drops right away. It is usually around 170-185. If your trannie got hotter then 250, it would be toast anyhow.

 

[SlyBones]

emddiesel,



Is that 210 towing anything up a large grade with the tc unlocked?



When the TC is locked it never hardly moves off the stop. Like you said I get 180-200 in town, stop and stop traffic, on a hot day. I have heard that on a long grade, heavy load, tc unlocked, the line temps reach 250-275 range is not too un-common. Most I have seem with my trailer is 230. This is the hot line comming directly out of the TC. I would agree that pan temps of 250+ you are pushing your luck.



There was a chart around here once apon a time, cant find it now. I dont think the transmission starts melting at these temps. But fluid life is dropped big time. If you tow a lot and see temps like these often, you had better be changing the fluid on those 12. 5K intervals like it says in the manual.

 

[EMDDIESEL]

I have never towed anything, my hitch is a virgin (The hitch step really does not count, its just a toy, Uhhhh... ). But i never see over 200 on the highway, even uphill. Only in stop and go traffic do i start getting up there.

 

[Greystoke]

Anyone who had upgraded to a double deep want to sell their regular size MagHytec transmission pan? Email me at -- email address removed --

 

[EMDDIESEL]

Anybody who has downgraded to a regualr depth pan and wants to sell there double deep pan? email me at -- email address removed --

 

[RADdodge]

I don't claim to know about transmission temperatures first hand, but I have done a lot of research in preparation for upgrading my 2001 automatic. A well respected transmission man said that Chrysler set their safety mark at 230-250 degrees before the temp gauge will light up in the dash. He considers 200 degrees a danger point when measuring in the pan, and 285 degrees at the cooler line. He also said that he has recorded differences between the temp sensors mounted in the cooler line and the factory temp sensor located in the transmission as high as 150 degrees. If you do a search through the automatic transmission threads, this info is repeated in several flavors. FYI.

 

[John]

Originally posted by Cooker

John,

Are you seeing cooler temps with the DD pan???

Yes, the trans. temps. are a little lower, something on the order of 10-15 degrees in my specific case. It's really hard to collect accurate data as some of the parameters change while trying to obtain averaged data (i. e. , ambient temp. , specific driving conditions, load, phase of the moon ... just kidding about the last one). Anyway, it seems to run a little cooler now.



EMDDIESEL, downgrade? Me? Never! I kept my (standard) Deep trans. pan just in case I didn't like the Double Deep pan for some/any reason. I later sold it to a friend and NW BOMBer.

 

[amsoilman]

Slybones,

First off, I try to keep the TC in the "locked" position when I am pulling. Especialy up a hill. I have a switch that I can lock the TCC, and keep it locked. This will certainly help in keeping the temp lower in the transmission by a large margin.

The gauge I had was incremented in 40 degree increments, so it was difficult to tell small changes in temps. However in all the time that I was doing the testing, I never exceeded the 200 F. degree mark. This was pulling GVW of 16,000 lbs. up grades as steep as 7 percent in hot summer temperatures. Now if the TCC is "unlocked", the temp will climb very rapidly, which is why I try to keep mine locked as much as possible.



According to GM's testing of ATF life, for every 20 degree temperature over 175 F the lifespan is cut in half. Varnishes will start to form at 212 F, Seals harden at 235 F. Plates will start slipping at 255 F. THe oil forms carbon at 295 F. and anything above 300 F will start the distortion of component parts.



The GM study was done using petrolium ATF. I was using a synthetic ATF,which has a much better oxidation stability as well as lower pour points which will allow the synthetic to function over a broader range of temeratures. In another test by GM, called THOT, which stands for "Turbo Hydromatic Oxidation Test", they require the (TAN) Total Acid Number increase not to exceed 8 in 300 hours. The ATF I am using goes to 900 Plus hours before it reaches a TAN of 8.



After the testing was completed, I sent a sample of the ATF to an oil analysis lab for testing, and the report came back as expected, "Normal", ATF is still servicable.



Wayne

 

[SlyBones]

Wayne,



Wheres your sensor mounted? I would agree with all that you said. so the lesson here is that line -vs- pan temps are similar when running with the TC locked. And can vary by a wide margin when unlocked.



Overall it is important that people not only install gauges, but learn to read them. We need to understand where the sensor is located, how transmissions produce heat, and the operating conditions when we are reading the gauge.



If I was in second gear, going 25-30, on the small hill near my house, and had a line temp of 230 I would not worry about it. If I was on the freeway, driving flat level ground at 65-70, in OD, TC locked and I saw a line 230 I need to start figuring out how I am gonna explain to my wife I need to go see Bill again.



I found a similar chart in a Mag-Hytec brouchure. I think they are using pan or internal transmission temps in those charts and not line temps when the tc is unlocked, as Bruce pointed out.



Thanks for the info on that ATF your using. I am using the same stuff. So how often are you servicing this, assuming not too much towing in the winter and a good summer season with many small trips and 1 good vacation trip.