Turbo time for my S50 on a "budget"

[bataangpinoy]

OP, my recommendation for you would be a Garrett GT3582rs. Would meet or exceed your power goals at 15lb of boost, using the .82 turbine housing and stock s50us cams.

If you're running cams far more aggressive than the M3 cams (and a higher redline), look into the 1.02 turbine housing. Would move the power delivery higher into the revs to match.

[BMW_TUNER]

As in finish this build and then build a spec car?

Yes sir. I have a friend who races spec and I was shocked the grip that a spec car generated.

[BMW_TUNER]

Short Block is back in the garage.


Upgraded oil pump installed

[BMW_TUNER]

OP, my recommendation for you would be a Garrett GT3582rs. Would meet or exceed your power goals at 15lb of boost, using the .82 turbine housing and stock s50us cams.

If you're running cams far more aggressive than the M3 cams (and a higher redline), look into the 1.02 turbine housing. Would move the power delivery higher into the revs to match.

GT3582rs is still on my list. I am leaning towards the BW S256-RS with AGP .82 , as it should spool a bit faster. I am waiting for July (aka 3 paychecks for the turbo purchase).

[BMW_TUNER]

Waiting on my new timing cover so that it can be decked to match the block and the oil pan is being modified to keep a downward slope on the turbo oil drain and have the Achilles baffle installed. I will get pics of those up before I put the motor back together.

[GG///M3]

This looks like its going to be fancy.

[BMW_TUNER]

I little fancy. The is it mocked up. I am doing the 3 day tq sequence on the studs with the cut ring. Cams will go in on Wednesday then the motor will be ready to be installed.

[mrcheezle19]

I would take a look at the Precision 6266 Gen 2. I am running that turbo on my car now and I made about 525whp on pump gas and I make 625whp on e85. I specifically chose this turbo over the gt35r82. The boost comes on early and hard and the transient response is awesome. Similar in price too.

[BMW_TUNER]

I would take a look at the Precision 6266 Gen 2. I am running that turbo on my car now and I made about 525whp on pump gas and I make 625whp on e85. I specifically chose this turbo over the gt35r82. The boost comes on early and hard and the transient response is awesome. Similar in price too.

I have been thinking more and more about a precision. It appears that reliability is gravely improved. Did you go BB or JB?

[BMW_TUNER]

Did some final assembly last night. Now I am just waiting on a few small parts then I will bolt the engine to the tranny to test fitment. After all fitment is verified I will drop the tranny in the tunnel then the engine into the bay and bolt them together in the engine bay and then I will really need a Turbo Wastegate and Blow Off Valve.

[greyis89]

Enjoying the build progress.

Dave out there posting up my Dyno charts before we even turn it all the way up ;)

[vaughnbannister]

I'm all for the GT3582r with 1.02. [emoji851] join the club, you know you want tooooooooo

[arams325]

I have a hx35 on my s50, it has a 12cm housing and starts spooling at 2500rpm i made 426 at 13psi on pump gas so far. I have been told to upgrade to a precision 6266 by my tuner i guess they are the bees knees.

[BMW_TUNER]

Big thanks to the forum and to Butters for the hook up. Ordered the GT3582R V band Tial 44mm MVR and Tial Q-BOV!!! Time to start making magic psssshhh!!! noises.

[BMW_TUNER]

I'm all for the GT3582r with 1.02. [emoji851] join the club, you know you want tooooooooo

I went with a .82 just to make it spool fast. I want to make it as useful on the track as possible and 2-300 rpm lower boost may help. I am curious to see the comparison on our dyno graphs as I will be running a 86mm low boost S50 very similar to yours. What made you go with the 1.06?