RB GF 19T Cast Turbo Review and Results

langsbr

Captain
Apr 5, 2017
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How is he guessing? Everything stated were facts. The "19ts" are nothing new except using a cheap chinafold instead of machining stock housings. You could buy a similar product YEARS ago. I would he happy to wager that GFs would make much more power in comparison to a China 19t setup with similar mods and same boost and timing levels.

Edit: Lets not derail the thread with another China turbo debate.

LOL beat me to it. I was going to say that nothing I mentioned had anything to do with results. But also for him to let us know when he makes 680whp at 27psi, like someone did with RB GFs ;) which there's no chance will happen, but OMG the backpressure if they even come close.

I'll give the 19T chinas a fighting shot to 550whp, but anything over 600 is just a happy dyno.
 

Blaster3500

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Nov 5, 2016
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Your forgot one of the biggest GF pros
- balanced on a VSR to very high specification by a pro.

I forget the numbers Robs shoots for. Discussed somewhere on line.. But each set of GFs come with a real balance sheet for the turbos you bought, not a xerox copy of some random graph.

Filippo

I would have to go back and dig up the exact specs but yes that is correct. I should have expanded and bit on that. Also for clarification the balancing goes for any set of RB turbos.
 

Blaster3500

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After the borla muffler was added the sound is great. The downside the exhaust is fairly low. If it becomes an issue I'll have it modified. I have posted a sound clip below.

I went to the 1/8th mile track this past Thursday. I was hoping for low 7s but was only able to get two runs in. Ended up with high 7s both runs. The first run it spun bad in 1st and I had a slow 1-2 shift. The second run the 1-2 was a little better but had low timing. Overall 103mph out of a full weight manual e90 and driving an hour and a half each way is nothing to complain about. The next trip will be a 1/4 mile and hopefully get the launch and 1-2 shift figured out. I would love to see a 135+ mph pass.
PXL_20201004_231633753.PORTRAIT-02.ORIGINAL.jpg

PXL_20201009_035959956.MP.jpg


 
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langsbr

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Apr 5, 2017
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Awesome time. Is that on pump gas or your E tune? What tires are you running in the rear? Are you NLS? I use the MHD NLS but can''t for the life of me hit second gear - not sure if it's mental or what, but I miss second every time I try to NLS. 3rd and up are fine.
 

Blaster3500

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Nov 5, 2016
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Awesome time. Is that on pump gas or your E tune? What tires are you running in the rear? Are you NLS? I use the MHD NLS but can''t for the life of me hit second gear - not sure if it's mental or what, but I miss second every time I try to NLS. 3rd and up are fine.

That was on E85. They are Toyo TQ 275/40r17's, a drag radial but still street-able. I did not do a burnout, so I am sure that would have helped. I will be sure to when I go back to the 1/4 mile track. As for not being able to hit 2nd, switch to Redline MT-90. I kept getting locked out of 2nd, its probably not you, it is the trans. This time I was able to hit it no problem, but lifted at the top of 1st from it spinning, so dropped out of boost and lost a bunch of momentum. Honestly I have never NLS the car. I will have to give it a try. It would help a ton ET's and MPH a good bit carrying boost through the gears.
 

langsbr

Captain
Apr 5, 2017
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II thought we had to use ATF - I have some Redline ATF for it, just haven't used it yet. Is the MT-90 that much better? I'm in SC as well, so it's a warm climate rather than cold if that matters.

The MHD NLS has helped me carry and extra 5lbs or more of boost between shifts, which definitely helps.
 
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Blaster3500

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The factory fill is thicker than ATF. The MT90 is thicker than the factory fill. I have not tried in super cold temperatures but I will be able to update soon. I had the Pentosin MTF-2 in it and so far I like the Redline better in all conditions. Once it gets around freezing I may have different results.

Considering I am going into vac between shifts it can't hurt :tearsofjoy:

https://www.bimmer boost.com/showthread.php?43633-6MT-Drag-Racers-heads-up!-)
 

derekgates

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Feb 23, 2018
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Great times. I, too, was curious about the rear tire. That's meaty! I am about to go square setup but can barely squeeze 255 in front/rear.

I would *love* an in cam video when you are ripping it down the track!
 

Blaster3500

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Nov 5, 2016
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Great times. I, too, was curious about the rear tire. That's meaty! I am about to go square setup but can barely squeeze 255 in front/rear.

I would *love* an in cam video when you are ripping it down the track!
Thanks! I'll brought my GoPro and forgot to mount it. I'll be going to the 1/4 mile track in the next few weeks and will be sure to get in car vids. I did take a video testing launching on the street. As you can tell it didn't go so good 😂. The drag radials had about 26psi in them so that was part of the problem.
 

derekgates

Lieutenant
Feb 23, 2018
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NW FL
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2011 335is
Thanks! I'll brought my GoPro and forgot to mount it. I'll be going to the 1/4 mile track in the next few weeks and will be sure to get in car vids. I did take a video testing launching on the street. As you can tell it didn't go so good 😂. The drag radials had about 26psi in them so that was part of the problem.

That is a freaking handful, right there. Holy crap man!

You have a very similar driveline setup to me... it's incredible to see it fighting that power. hahaha

What a car. This thing is wild.
 

langsbr

Captain
Apr 5, 2017
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What track you heading to and when? If I can get mine back together I might try to make it.
 

Blaster3500

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Nov 5, 2016
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That is a freaking handful, right there. Holy crap man!

You have a very similar driveline setup to me... it's incredible to see it fighting that power. hahaha

What a car. This thing is wild.

It's fun haha. Definitely needs boost limited in 1st. On street tires 2nd wraps up faster than 1st on the drag radials. I took a log the other day. From 4k it took less than a second to hit limiter from the time I went full throttle

What track you heading to and when? If I can get mine back together I might try to make it.

It is probably a haul for you. Atlanta Dragway in Commerce, Ga. The 1/8 mile track is in Greer, SC. Much closer for you. They have test and tune on Thursday nights. Once you get your car together let me know and I would be happy to meet up there.
 

Blaster3500

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Nov 5, 2016
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That's brutal quick. 1 second? sheeesh. I would love to see that car at the dragstrip, but...

View attachment 45065

😂
Haha definitely not worth the trip to see a heavy e90 with a sub par driver 😂. I'll be sure to get good videos. I had my wife record at the 1/8th mile track. Needless to say I got a video of a grey f30 that was a few cars in front of me. Here is the log from the 2nd gear roll on street tires and e85. It isn't as bad in warmer weather.

 

Blaster3500

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Nov 5, 2016
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Went to the local 1/4 mile track tonight. I was only able to get one good pass. Once it cooled down I struggled bad with traction issues. Not a great ET but I was very happy with the trap (134.23). I wish the prep at the 1/4 mile is as good as out local 1/8th mile track. The car constantly picked up 35mph on the big end. Using ricer math, if I was able to combine that with the 1/8 track time it would be trapping 137mph. Below are some pics and vids. I took one video showing the car is 100% full weight down to the floor mats.

PXL_20201023_230341863.MP.jpg

PXL_20201023_232209818.MP.jpg

 

Brule

Corporal
Feb 20, 2017
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Making some power there. Puts alot of single turbo 6266 setups to shame.
 

Brule

Corporal
Feb 20, 2017
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I agree but it's only part of the story. If you do a Google on MMP turbo's, it's usually Rob replying, talking shit and smack without any solid background info on his claims. Basically behaving like a little bitch who got bettered by the competion (at that point in time anyway)
Also in some E-mail conversations we had I was also not impressed.Very arrogant and I got lied to repeatedly about my PCV kit bieng shipped out. It took him weeks. And this all was still in a "good guy new customer" settings. I would never want to get in a warranty claim issue with him so I avoided him and went with MMP, who actually sent me more than what was promised, way better pricing, quick and direct on the E-mail and has a nice clan of MMP drivers to share experiences with.

Any reports/results from any twin turbo guys, regardless of brand, who run 26PSI+ on twins, i ignore. Those guys should get singles :)

This is funny.
Wheres mmp now?
Whos still making n54 turbos?

Where will all these $1000 chinese turbo companies be in 1-2 years?
Gone like the other past 15 companies. They all promise better everything, more power, 3 year gurantee but all disappear within 2 years.
 

MoreBoost

Sergeant
Jul 27, 2017
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This is funny.
Wheres mmp now?
Whos still making n54 turbos?

Where will all these $1000 chinese turbo companies be in 1-2 years?
Gone like the other past 15 companies. They all promise better everything, more power, 3 year gurantee but all disappear within 2 years.

The opinion is MMP is unreliable junk that doesn't perform. RB trash talked alot but his Turbos work well.

That's a great trap on the GFs
 

langsbr

Captain
Apr 5, 2017
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07 335i 6MT e90
Did you short shift early? I trap 98 in the 1/8, but only 128-130 in the 1/4. You're adding a LOT of MPH on the big end which is crazy, but awesome.
 

MoreBoost

Sergeant
Jul 27, 2017
334
135
0
Ride
335i
Did you short shift early? I trap 98 in the 1/8, but only 128-130 in the 1/4. You're adding a LOT of MPH on the big end which is crazy, but awesome.
I trapped about 101, 102 in 8th on my GCs but 129 at qtr. Kept misfiring last gear. Dct, dmf issue.

How much boost and timing?