|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
335i Turbos - Stage 2 now installed and reviewed!!
|
|
11-06-2009, 10:08 AM | #89 |
Major
94
Rep 1,184
Posts |
YES totally correct. Hope TD could use stronger materials that will avoid usure and rattle...
|
Appreciate
0
|
11-06-2009, 10:09 AM | #90 | |
Moderator
322
Rep 5,493
Posts |
Quote:
Are you 100% sure? IF that is the case then potentially I would have major concerns over the longevity of the bearings, given the state of my own turbos. The water cooling system helps to keep the bearing temperatures down - without the water I can't see how the ASR turbos would survive long durations of full boost. Again, that's assuming you're correct and the ASR turbos are only oil cooled.
__________________
...
... ... DMS Remap Review ----- Quaife LSD Review ----- Hartge Antiroll Bars Review ----- Bilstein PSS10 B16 Ride Control Review ----- Detail by ShineOn ----- Paintshield Review |
|
Appreciate
0
|
11-06-2009, 11:36 AM | #91 | |
Colonel
263
Rep 2,559
Posts |
Quote:
BTW, I always thought the BMW turbos were oil cooled only, that's at least what I've understood so far. But I'm no expert, so could be wrong. Alpina_B3_Lux
__________________
Audi R8 LMX, BMW M550i xDrive (G30 LCI); gone: Alpina B3 3,3 (E46), BMW 335i, Audi R8 V10 manual, Audi R8 V10, BMW M235i, BMW 550i F10
|
|
Appreciate
0
|
11-06-2009, 02:16 PM | #92 | |
Moderator
322
Rep 5,493
Posts |
Quote:
The BMW turbos have both water lines and oil lines into the bearing housing. Having studied the pictures of the Racing Dynamics turbos very carefully, Turbo Dynamics have confirmed that those upgraded turbos are 100% only oil cooled. There are NO waterways anywhere on those turbos. What's more those CHRAs appear appear to be from an old T25 diesel unit, hence why there isn't any watercooling on the bearing housing as diesel engines never see exhaust gas temperatures at the same level as a petrol engine Turbo Dynamics share my concerns over the premature bearing wear on these units, and given the state of the bearings that came out of my turbos which showed a lot of heat soak damage, I struggle to see how the Racing Dynamics turbos will last any length of time, unless they have come up with an alternative cooling solution. Note that I have only said Racing Dynamics at this point - these comments might be applicable to ASR if they use the same techniques and components. I have sent emails to both Racing Dynamics and ASR for their comments as I am intrigued to see how RD has overcome this cooling issue and whether ASR have the same design principles.
__________________
...
... ... DMS Remap Review ----- Quaife LSD Review ----- Hartge Antiroll Bars Review ----- Bilstein PSS10 B16 Ride Control Review ----- Detail by ShineOn ----- Paintshield Review |
|
Appreciate
0
|
11-07-2009, 01:12 AM | #93 |
Lieutenant Colonel
83
Rep 1,557
Posts |
Great read Tony, congrats on pushing the boundaries mate,
8min `ring laps is really flying. What is the stock compression on the N54 Tony and how much boost can you run without needing helpers to avoid detonation? I remember reading that Alpina lowered the compression with their pistons but I guess they have to avoid warranty claims from people who might run low octane fuel. Look forward to seeing the results. |
Appreciate
0
|
11-07-2009, 02:26 AM | #94 | |
Colonel
263
Rep 2,559
Posts |
Quote:
Alpina_B3_Lux
__________________
Audi R8 LMX, BMW M550i xDrive (G30 LCI); gone: Alpina B3 3,3 (E46), BMW 335i, Audi R8 V10 manual, Audi R8 V10, BMW M235i, BMW 550i F10
|
|
Appreciate
0
|
11-07-2009, 03:00 AM | #95 | |
Lieutenant Colonel
83
Rep 1,557
Posts |
Quote:
Thats what I said, Mahle are very expensive when you consider someone like CP will machine a set to spec for a Grand. 2000 Euros is actually a good price for a set of genuine Mahle pistons if that includes taxes. The OEM pistons will already be forged (even the "old" S54 had forged/part-balanced pistons/rods/crank) but Alpina choose to lower the CR to play extra safe. If you lower CR you always loose power, the only way to make it back is raise boost or advance timing but obviously the lower CR allows this and a little more safely. |
|
Appreciate
0
|
11-07-2009, 03:10 AM | #96 | |
The Tarmac Terrorist
948
Rep 29,345
Posts
Drives: 997.2 GT3
Join Date: Mar 2007
Location: ''Fandango Towers''
|
Quote:
Mike is very correct there. Lowering the compression will enable to run higher boost to make more power etc.
__________________
997.2 GT3
|
|
Appreciate
0
|
11-07-2009, 05:41 AM | #98 |
Moderator
322
Rep 5,493
Posts |
Where did you get the quote for the Mahle/Alpina pistons?
__________________
...
... ... DMS Remap Review ----- Quaife LSD Review ----- Hartge Antiroll Bars Review ----- Bilstein PSS10 B16 Ride Control Review ----- Detail by ShineOn ----- Paintshield Review |
Appreciate
0
|
11-07-2009, 09:14 AM | #99 |
Colonel
263
Rep 2,559
Posts |
Evotech. Does not include taxes, BTW, so add another 400 EUR if you buy them in Germany. Then, the install has to be added to that which is not obvious either as you have to take most of the engine apart. But a good investment for the durability of the engine, IMO. If I had the financial means to do that, I'd go down that route as well.
Alpina_B3_Lux
__________________
Audi R8 LMX, BMW M550i xDrive (G30 LCI); gone: Alpina B3 3,3 (E46), BMW 335i, Audi R8 V10 manual, Audi R8 V10, BMW M235i, BMW 550i F10
|
Appreciate
0
|
11-07-2009, 04:49 PM | #101 |
Major General
161
Rep 7,377
Posts |
I dont think is needed to lower compression. We are not boosting 25 psi and i guess alpina choose that route only for durability since the car should be able to run as oem does. You can always raise the head to lower compression.
__________________
07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
|
Appreciate
0
|
11-07-2009, 05:58 PM | #103 | |
Colonel
263
Rep 2,559
Posts |
Quote:
Alpina_B3_Lux
__________________
Audi R8 LMX, BMW M550i xDrive (G30 LCI); gone: Alpina B3 3,3 (E46), BMW 335i, Audi R8 V10 manual, Audi R8 V10, BMW M235i, BMW 550i F10
|
|
Appreciate
0
|
11-07-2009, 06:03 PM | #104 | |
Major General
161
Rep 7,377
Posts |
Quote:
i want to keep the water cooling and definetely get an 100% proof solution for the wastegates (which ASR and RD dont offer) so i probably will do the Rob Turbos , pictures on N54tech.
__________________
07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
|
|
Appreciate
0
|
11-08-2009, 05:59 AM | #105 |
Major
94
Rep 1,184
Posts |
Yes first of all get decent wastegate...
On my new 09 turbos with upgraded OEM hardware 8mm rod, the rattle is coming again little by little on soft acceleration. I am evaluating all turbo upgrade possibilities, looking for better flow at redline without sacrifiing spool time and low rpm torque. Could you post a link to Rob turbo upgrade? It seems that Turbo Dynamics retain the same wastegate rod that get used... will it work? And yes after the turbos we need the adequate flash to obtain the max of the combo: turbo + DPs + methanol + FMIC It will be a killer setup if a tuner can bring the optimized flash |
Appreciate
0
|
11-08-2009, 06:21 AM | #106 |
Major General
161
Rep 7,377
Posts |
here is the link: http://www.n54tech.com/forums/showthread.php?t=5029
pictures on page 3, 4 and 8 i think. i am not putting in my car a set of turbos which will at some point have wastegates issues. only removing and installing the turbos has a steep price involved. Also it seems that MT cars suffer more than AT cars of wastegates problem. at least all people i know that were forced to change turbos had MT. i have not this issue. only at start up you can hear them but otherwise i have been pretty lucky.
__________________
07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
|
Appreciate
0
|
11-08-2009, 06:34 AM | #107 |
Major
94
Rep 1,184
Posts |
great found the post on rob turbo and the discussion about the wastegate system.
In the pictures about old and new actuator it seems that the rod is always 6mm didn't someone said that the new actuators have 8mm? or is it about the wastegate axle that goes inside the housing? Indeed we need a complete new design. My 335i is 6MT 06/07 got new revised turbos beginning 09 |
Appreciate
0
|
11-08-2009, 06:52 AM | #108 |
Major General
161
Rep 7,377
Posts |
yeah the problem is the wastegate axle that goes inside the housing. The pictures in the thread are showing still the old wastegates. He is working on a solution . i was looking 2 weeks ago at the old S4 Audi engine and the wastegates assembly was incredibly sturdy... really bad engineered wastegates we got on the N54 ...
__________________
07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
|
Appreciate
0
|
11-08-2009, 09:19 AM | #109 | |
Captain
61
Rep 938
Posts |
Quote:
|
|
Appreciate
0
|
11-08-2009, 10:37 AM | #110 | |
Colonel
263
Rep 2,559
Posts |
Quote:
Alpina_B3_Lux
__________________
Audi R8 LMX, BMW M550i xDrive (G30 LCI); gone: Alpina B3 3,3 (E46), BMW 335i, Audi R8 V10 manual, Audi R8 V10, BMW M235i, BMW 550i F10
|
|
Appreciate
0
|
Bookmarks |
Tags |
boost, compressor, overhaul, turbine, turbo, turbo upgrade, turbocharger, upgrade |
|
|