Euro vs Suncoast Torque Converter

Mountainman · **Posted:** Thu Feb 20, 2020 8:37 pm

TKB4 wrote:

to be clear the CRD I drive with a Hemi and 32 inch tires and GDE hot tune and towing yp to 3,000 lbs does not shudder even at 60 mph lockup and later when I added the GDE ecotune trans tune it had no shudder in top gear lockup down to wherever it drops lockout around 50 mph . In fact I never had it shudder even once.

The one my son drives has Old man emu lift and 31.4 inch tires and GDE Turbo with the Hemi and he says he occasionally has shudder but his front pump may be problem and he definitely has the low pressure at startup problem still. None of the three TCs I replaced had the front pumps changed or upgraded. I used the Hemi TC listed for the 5.7 Hemi I could probably find the part number but would take a while . I think I got mine from Rockauto for about $180. Another one I have had had a different trans put in and it had no shudder,dont know what TC it has. The problem my son rarely has may well be the pump and not the converter

I am pretty sure the Hemi TC I used was rated at 450 to 500lbs but only thing I found just now is that the Hemi 5.7 engine it is used in is rated at 400ft lbs and 407 ft lbs depending on the year.

You need to start buying lottery tickets! I've had 3 back to back seperate transmissions shudder like a stock torque converter (in my personal jeep), well, one was stock TC, then hemi, then suncoast, still shuddered.
If only I had listened to WW's advice several years ago about the FULL shift kit (minus resistor). But it seems that the transmission shops were holding the essential knowledge that it's the springs in the front pump that stops the shudder (plus upgraded TC of course), but they are in the kit. A shop can even upgrade the existing old style pump, but it's a wasted opportunity to replace a part that wears out, and the old style can have leaks that the new style addressed.

Mountainman · **Posted:** Thu Feb 20, 2020 8:37 pm

Accidental double post

timothyd · **Joined:** Wed Feb 20, 2019 2:58 am **Posts:** 90

I had shudder in with the stock TC on rare occurrences but with that I was not brave enough to use the hot tune with the stock one. When I did the Suncoast I did the transgo kit myself and installed ALL of it including the retaining ring in the clutch pack and did not replace the front pump, just that parts that repair the failure points. I can say that I am impressed with the Suncoast, 0 shudder under any throttle or load and much tighter stall. HOWEVER, I do wish that I did a full rebuild when I had it apart as I do have the 2-3 clunking shift from time to time.

This also is based on internet talk but I opted NOT to use the Sonax line booster with the alarming amount of complaints that it caused transmissions to fail almost immediately after installing (I would assume that they were older transmissions that were not happy with the higher line pressures).

My :2cents:

is to use an upgraded TC and not the euro, whether that be a Florida, Suncoast or otherwise. Install the transgo kit in its entirety (minus the resistor), and avoid the Sonax. I do not see a reason to replace the front pump unless it shows obvious signs of wear or you want to throw money at it. Even the owner of Transgo states that the parts in the kit are sufficient to solve any of the front pumps issues.

WWDiesel · **Posted:** Thu Feb 20, 2020 9:26 pm

timothyd wrote:

Use an upgraded TC and not the euro, whether that be a Florida, Suncoast or otherwise. Install the transgo kit in its entirety (minus the resistor), and avoid the Sonax.

Super great advice and I totally concur! If you pull the tranny to replace or upgrade the TC, for sure replace the front pump assembly with an updated new design pump assembly and install the TransGo kit without the resistor. No need for the Sonex. New ATF+4 & filters as well. The TransGo will give you all the line pressure needed and not overtax older parts in a higher mileage transmission.
Been preaching this very thing for years! :wink:

My advice is cheap and free, but rest assured, if I recommend it, I have already tried it or installed it on my vehicle and if it did not work or function well, I would tell you so.

GreenDieselEngineering · **Joined:** Sun Jun 07, 2009 5:10 pm **Posts:** 1111

We installed the Mopar Euro TC in our two CRD test vehicles back in 2009 when they first were released. Been through many tune develops and turbo kits and the Euro TC has never given us any issues with shudder. It is borderline with the turbo kit. Euro is rated at 400 ftlb. They were only $220 when first released back then, it was dirt cheap for a solid fix.

WWDiesel · **Posted:** Sun Feb 23, 2020 5:20 pm

GreenDieselEngineering wrote:

We installed the Mopar Euro TC in our two CRD test vehicles back in 2009 when they first were released. Been through many tune develops and turbo kits and the Euro TC has never given us any issues with shudder. It is borderline with the turbo kit. Euro is rated at 400 ftlb. They were only $220 when first released back then, it was dirt cheap for a solid fix.

GDE, Is there any options for TCM tunes anymore, a lot of people are asking and still wanting one? :juggle:

Rrusse11 · **Posted:** Sun Feb 23, 2020 11:21 pm

GreenDieselEngineering wrote:

We installed the Mopar Euro TC in our two CRD test vehicles back in 2009 when they first were released. Been through many tune develops and turbo kits and the Euro TC has never given us any issues with shudder. It is borderline with the turbo kit. Euro is rated at 400 ftlb. They were only $220 when first released back then, it was dirt cheap for a solid fix.

"GDE, Is there any options for TCM tunes anymore, a lot of people are asking and still wanting one?" WWDiesel

Me for one! An eco tune for the engine as well, though I gather that might
be a touch problematical. Please, PM me with options if at all available.
Cheers!

GreenDieselEngineering · **Joined:** Sun Jun 07, 2009 5:10 pm **Posts:** 1111

WWDiesel wrote:

GreenDieselEngineering wrote:

We installed the Mopar Euro TC in our two CRD test vehicles back in 2009 when they first were released. Been through many tune develops and turbo kits and the Euro TC has never given us any issues with shudder. It is borderline with the turbo kit. Euro is rated at 400 ftlb. They were only $220 when first released back then, it was dirt cheap for a solid fix.

GDE, Is there any options for TCM tunes anymore, a lot of people are asking and still wanting one? :juggle:

Not in the US, but any other country is still fine.

PZKW108 · **Joined:** Sun Apr 06, 2014 5:23 pm **Posts:** 461

GreenDieselEngineering wrote:

WWDiesel wrote:

GreenDieselEngineering wrote:

We installed the Mopar Euro TC in our two CRD test vehicles back in 2009 when they first were released. Been through many tune develops and turbo kits and the Euro TC has never given us any issues with shudder. It is borderline with the turbo kit. Euro is rated at 400 ftlb. They were only $220 when first released back then, it was dirt cheap for a solid fix.

GDE, Is there any options for TCM tunes anymore, a lot of people are asking and still wanting one? :juggle:

Not in the US, but any other country is still fine.

Looks like right now U.S. based diesel tuners sells only for other countries. Other country based diesel tuner sells in the U.S...…... :roll:

TURBO-DIESEL-FREAK · **Joined:** Sat Apr 17, 2010 3:29 pm **Posts:** 1167

This is sad... the EPA simply has too much power, and only listen to themselves and their tree-hugging advisors.

Rrusse11 · **Posted:** Fri Feb 28, 2020 9:59 am

Got my tune courtesy of *******, who also tweaked the TCM for higher shift points. MUCH better to drive, now for a TC, I'm leaning towards the Florida billet.

WWDiesel · **Posted:** Fri Feb 28, 2020 3:40 pm

Rrusse11 wrote:

Got my tune courtesy of ********, who also tweaked the TCM for higher shift points. MUCH better to drive, now for a TC, I'm leaning towards the Florida billet.

Be very careful advertising that fact, EPA will be knocking on his door like they did to GDE and many others. :grim:

I would not publish their name if they are in the US! :juggle:

Communicate it by PM or email. :wink:

Rrusse11 · **Posted:** Fri Feb 28, 2020 4:09 pm

Fair enough, edited. There was a recent discussion on the TDI forums about this, it appears the EPA is specifically targeting trucks. Those who "roll coal" are under scrutiny. GDE has been used as an example, rightly or wrongly. Elderly Jeeps and VWs, not so much. Still, point taken.

Euro vs Suncoast Torque Converter

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