Rossler Transmission

[gectek]

does anyone know the upgrades on the rossler transmission (4T45E) , and an estimated cost for it?

[AaronGTR]

Schweppe23 would be the one to ask. There's only a few people who have them from rossler and he's the only one I know with one. I'm not sure if he can even tell you everything they might have to done inside it like moddifying the valve body etc, but he can tell you how much it cost. We do know they used the raybestos blue clutch plates, koleen treated steel plates, and the EP LSD.

I used the same parts on my build. Tejohnson used those minus the koleen steels and he also has the superior aluminum accumulator pistons. Those weren't out when I did my build and he's rebuilt his twice. We both used updated parts from GM. Most of the updates can be found here by looking under "new or changed". http://media.gm.com/division/2004_prodinfo/powertrain/automatic/index.html
Their records only go back to 2004 now though, so the 2003 changes aren't on that site anymore. I have the '03 but it won't let me attach it here since it's in .doc format. Here's the relevant stuff though.


"SEALED PRESSURE SWITCHES
There are six pressure switches and a temperature sensor on a manifold attached to the valve body inside the transaxle. These switches signal the control module when various shifting actions occur. The switches have been partially sealed to reduce the possibility of contaminants in the fluid impairing their operation. This results in greater reliability of operation.

MORE ACCURATE LINE PRESSURE CONTROL SOLENOID
A solenoid is an electro-magnetically-operated valve. In this transaxle it controls fluid pressure to the clutches, affecting the smoothness of the shifts. This solenoid was replaced by a unit manufactured with more precision and the result is less variation in line pressure and more accurate operation.

DRIVEN SPROCKET SUPPORT THRUST WASHER IMPROVED
A thrust washer is a flat, round bearing that axially locates the driven sprocket gear against the driven sprocket support of the transaxle. Tabs were added to the washer so that it will be positively located on the driven sprocket support during assembly. This results in easier assembly. The material was also revised to a high temperature nylon to increase its toughness."

[gectek]

all shift solenoids, pump, pump shaft and shaft bearing, driven sprocket support thrust washer,and input sun gear thrust bearing, pressure control solenoid, that looks like the bill on mine then also. i also got the higher stall converter that didnt come on the factory trans, factory on mine was like 1600 or1800, i got the 2385 stall, i should notice difference with that. also on the trans fluid, siince im running the lsd should i upgrade with friction enhancer? i know they make that special fluid for lsd rearends, and dont know if i could maybe get more out of the lsd with a friction adder or diff fluid like maybe dexron IV, V, or VI

*edit

also can i send my new plates to rossler and get them coated, or would it be better to send them to a manufacturer and get it?

srry forgot to add the pressure switches

[gectek]

and for the 06-07 they changed the low roller clutch, the drive chain and the internal final drive gear(i think they are talking about the ring or annulus gear on that) so i guess ill get those also

[gectek]

so then all of these parts should be in their most revised state if i were to get them as parts for an 06 or 07 4t45e, like the bearings and such, so i should tell the parts guy at the dealership that, so he wont have to search around for the parts from diff years

[iceman]

I remember Pat saying something about Rossler stood behind everything they did on that trans sans the EP LSD.. something in the trans went at the last drag strip thing he went to, haven't talked to him in a lil bit to find out what

[AaronGTR]

so then all of these parts should be in their most revised state if i were to get them as parts for an 06 or 07 4t45e, like the bearings and such, so i should tell the parts guy at the dealership that, so he wont have to search around for the parts from diff years


Exactly. Whatever changes they incorporated from year to year... it means they used the new part in every version of the trans from then on, so the newest trans will have all the same parts.

[gectek]

aaron, did that pump bearing you got come installed in the pump, if not which bearing is it

[AaronGTR]

It's the pump shaft bearing. Goes on the shaft, not in the pump. The smallest splined shaft in the center of the trans input shaft is what drives the pump. They also started putting a thicker retaining flange on that shaft in later years although it's not mentioned in those updates. The guy that did my rebuild told me about it and replaced the shaft too. Probably not critical, but I wanted everything done at the time since it was apart. He replaced the input drive sprocket too because he found pitting on the face of the teeth. Also got a fresh stock torque converter because the old one was contaminated... the whole trans was full of burnt clutch material. That was the last of what I replaced besides the normal stuff.

[gectek]

we were looking at a diagram at my dealership and couldnt really tell which was the pump bearing, im guessing it goes inside the stator support, like a brass bushing

[gectek]

ok i found where it goes, it goes in the channel plate

[gectek]

found the pics to show...

# 200 on the pump and #400 on the driven sprocket support, those are the bearings you are talking about

[AaronGTR]

Yep, those should be the ones. :) I have some expanded diagrams in my file cabinet somewhere too but can't find em right now.

[gectek]

that was from all data, but i have the atsg manual also. ive rebuilt my tranny before, and am doing it again, because i wasnt satisfied with the results and wanted to make sure that itll handle the power i wanna put through it. do from what i see the pump bearing would come with a new pump, so i dont have to worry about replacing it and the pump also

[lastyear4gt]

I have an 04 GT, what is a list of upgraded GM parts beyond this year I would need? Can anyone tell me where to get the parts to rebuild this LSD etc?

[gectek]

well here is what i got so far. the superior 1,2,and3 accumulator pistons can be had from them, or you can get them through transstar also. i have a thread on another forum (60*v6) that shows the diff stall converters that you can get for it. stock is around 1600-1800, not good. also there are the raybestos powertrain blue plate specials, plus all the other things we talked about in this thread about the pump, pump shaft and shaft bearing, the output shaft support bearing, pressure control solenoids and trans temp/pressure sensors, also the lsd can be had from www.engineered.net umm i heard you can have the steels for the trans koleen coated also, but havent found a company yet to do it. thats all i got for now. anything else just ask

[AaronGTR]

I have an 04 GT, what is a list of upgraded GM parts beyond this year I would need? Can anyone tell me where to get the parts to rebuild this LSD etc?

You pretty much have all the important upgrades. '04 was the last year they made any significant changes. '05 they didn't change anything related to durability and '06 they only changed the heat treatment process for the final drive gear set. If you were that worried about gear strength you could just take all the gears and sprockets out of your stock trans and have them cryo treated and shot peened. All the info for '04-'06 changes can be found on the site link in my first post.

[tejohnson]

If you really want to go forward with the kolene treating, there is a company in Cuyahoga Falls, OH. (That is who did Pat's and Aaron's steels anyways)

One of the updates in 2003 came with a new plate, gasket, and valve (without a small hole in it). I posted the TSB on here a while back. Pat posted the name and address of the company that did the Koelene treating.

Hardening of the metal may be a bit overkill, but, nobody has really it done it before on the 45e (that I am aware of).

Mine is still in good shape, I've been curious of Pat's. That e-brake can be evil. Never touched it once in my burnouts. Just cycled the tires enough to get the dirt off.

Also, going with a much higher stall on the converter is not too great of an idea due to the heat it causes. It will make programming the transmission settings a little "interesting". ( like 7000k shifts interesting if your not careful ;) )

[tejohnson]

I remember Pat saying something about Rossler stood behind everything they did on that trans sans the EP LSD.. something in the trans went at the last drag strip thing he went to, haven't talked to him in a lil bit to find out what


I talked to him on Saturday. Went up to a climbing gym just outside of Akron and Cuyahoga Falls. Called to see what was up, but it didn't sound like it was the differential that went. Sounds to me like an issue with the hydraulics or the steels/clutches.

[gectek]

thats good, and yah they redesigned the separator plate and of course the gasket also, but i dont know if i wanna do that or not. im not sure if they had to revise the vavle body to make the changes work or not. and i already had the update vavle in my vavle body.

the converter i got isnt that much over stock, and im installing a trans cooler also. and a trans temp sensor. the factory stall was like 1895 i think and i got the 2385, so not incredibly high for a factory converter, but better than stock. and ill have the rev limiter way before that, like 5900 or 5800.

i got the dhp powertunr, so i dont have to worry too much about the programming. the dhppcm 1.0 i have now shifts it at 6400 or a little higher, but the guy there said that it had the right code, it revs way too high for the stock vavletrain and i lose foreward momentum after 6k.......so i think ill just monkey with that a little when i get it in.

[gaowners32]

Whats about www.levelten.com they are local for me what can they do for our tranny's?

[AaronGTR]

Whats about www.levelten.com they are local for me what can they do for our tranny's?


Nothing. They are a scam... stay far far away! They've done a few decent things with imports (auto supra's and stuff) but they don't specialize in fwd or domestic stuff and don't really make anything themselves for our trans. Do some searching on clubGP about them. They did several so called "bulletproof" 4T65's for members there that ended up being just stock rebuilds and blew up.

[gectek]

hey aaron was wondering if you remember which pressure control solenoid you used for your rebuild...ill see if i cna get a pic.

there are 2 diff styles and gm says they are not interchangeable, but i figured an upgrade was an upgrade, they use the same valve body and separator plate, and springs, so what could be bad with that?

left is older 2000-02 style(delphi) right is 03 style (bosch)

[jaketuff]

Whats about www.levelten.com they are local for me what can they do for our tranny's?

Let 'em stay in Iraq!

OUT

[AaronGTR]

hey aaron was wondering if you remember which pressure control solenoid you used for your rebuild...ill see if i cna get a pic.

there are 2 diff styles and gm says they are not interchangeable, but i figured an upgrade was an upgrade, they use the same valve body and separator plate, and springs, so what could be bad with that?

left is older 2000-02 style(delphi) right is 03 style (bosch)


Couldn't tell ya that. The trans guy used whatever style was supposed to go in my trans. He didn't tell me if he switched or upgraded anything with that.

[gectek]

dang, ok well i guess ill just have to see which one works, i have the newer style in, i think ill take it to a trans shop and have them press test it to see if it is good or not