Mase Engineering 6262B Build Thread
Originally Posted by dsddcd,Oct 1 2010, 03:08 PM
I like to think of this as growing pains. I have talked with many others and there are a few things that many of us need to address. Below are the issues I have or need to address with the system. It may look bad but compared to others this is pretty good.
(1) Oil Burning Ball Bearing Turbo's (Precision's Issue)
(2) Melting Filters (Seems that some do and others don't but I have yet to figure this out)
(3) Melting Oil Cooler Lines (I removed mine but will be reinstalling with higher grade heat sleeving.
(4) Manifold Vibration (Have yet to tackle this one, but some sort of bracing will result for this)
(5) Downpipe attachment (Need to add a bracket to attach to the block)
(6) Intercooler line attachment (Don't like that they just free float)
(7) Manage the extreme heat from the system (Not a design problem but should be addressed more most)
(1) Oil Burning Ball Bearing Turbo's (Precision's Issue)
(2) Melting Filters (Seems that some do and others don't but I have yet to figure this out)
(3) Melting Oil Cooler Lines (I removed mine but will be reinstalling with higher grade heat sleeving.
(4) Manifold Vibration (Have yet to tackle this one, but some sort of bracing will result for this)
(5) Downpipe attachment (Need to add a bracket to attach to the block)
(6) Intercooler line attachment (Don't like that they just free float)
(7) Manage the extreme heat from the system (Not a design problem but should be addressed more most)
So far I have had no issues with melting filters, oil cooler lines etc. Yes I think the kit probably needs to be braced.
Originally Posted by s2000442,Oct 5 2010, 09:47 AM
If you have trouble getting a hold of Mase at shop. I have tried recently but no one answers phone and voice mail is full then try this.
Fernando at Central Florida Turbo made me this:

It is a -3 90 degree to 1/8 fitting with a 0.031 nitrous jet he adapted to fit. The restrictor appears to have stopped my smoking turbo issue. My 5857 was leaking oil from the seals and would smoke from the hot side of the turbo. You could see a steady stream of it when the hood was raised.
This fitting is a direct replacement and takes minutes to install for about $20. If you have a BB precision, they now recommend this for their turbos due to the high oil pressure.
Fernando at Central Florida Turbo made me this:

It is a -3 90 degree to 1/8 fitting with a 0.031 nitrous jet he adapted to fit. The restrictor appears to have stopped my smoking turbo issue. My 5857 was leaking oil from the seals and would smoke from the hot side of the turbo. You could see a steady stream of it when the hood was raised.
This fitting is a direct replacement and takes minutes to install for about $20. If you have a BB precision, they now recommend this for their turbos due to the high oil pressure.
Got back on the dyno tonight and had some good results made a large amount more midrange torque on pump gas.It was an eventful night, I got on House Of Boosts (www.houseofboost.com) dyno about 7:00PM and their tuner worked with me a bit to get familiar with the dyno. I was amazed at how willing they were to help and work with me through the process, thanks again Erik. I needed to get back on the dyno as many things have changed since Mase was originally here. Unfortunatly the one thing that did not change was the clutch. The dyno below was my final run before slipping the clutch. The large torque spike from the spool is just too much for my ACT w/ factory disc to handle.
(1) Added the Cutout w/ the factory exhaust and cat
(2) Rescaled nearly all my Breakpoints for greater resolution in partial throttle and light loads
(3) My knock sensor was not working on the original visit and I wanted to log and setup the knock curve
(4) The timing in the EMS was Synced about 7 deg advanced
(5) My Mishimoto fan shroud was keeping the engine temps very high 215+ on the dyno originally which was coupled with a very hot and humid day
I had to completely rework the fuel map, the curve changed quite a bit on the low-end and at boost with the exhaust changes. This was done on the street before I got to the dyno though I did have to add another 5-8% fuel at 20PSI over the 5-8% I added when Mase originally tuned it. Since everything was pretty close I jumped on the dyno and started making pulls. I was strange that after 16PSI I was either keeping the timing the same of barley changing it as we moved to up to 22PSI.
DynoCom Dyno - No Correction
New Tuning Session

Old Tuning Session
The orange line is pump and green is C16
It seems that the 6262 is not that efficient at low boost and was gaining efficiency as I went past 18PSI but I did do not have enough data to verify. As for the setup it seems to lose its efficacy of 7500RPM and I think it is an exhaust flow restriction that is causing this. Currently I am running a 0.63A/R on my 6262 and based on all the dyno’s I have seen and this testing at 5857 w/ 0.82 A/R is probably the perfect turbo for my use. The exhaust is flowing well but I believe I could also benefit from a 3” cutout and downpipe. I am debating on purchasing an 0.82 A/R back housing and testing it to see how it effects the spool and topend. I still think that Inline Pro has the right idea using the 5865 0.63 A/R on our cars for street use. Hmm, maybe I will try and get a 5862 and try it but not matter what I am splitting hairs. Anyone want to lend me their trubo’s for testing?
Originally Posted by spectacle,Oct 5 2010, 03:23 PM
What other options? Whats wrong with aluminum?
I just got my parts today to make mine and I will post up when I get a chance to complete it and test the different restrictors diameter I ordered.
You can borrow mine if you swap your 6265 turbine housing on although I doubt you want to try mine out lol.
IMO I'd keep the same turbine housing that you have. Can you try out your 6265 on that and swap your 6262 compressor housing on?
IMO I'd keep the same turbine housing that you have. Can you try out your 6265 on that and swap your 6262 compressor housing on?







