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My M3 Build Up


Guest StanekM3

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Guest StanekM3

Sorry for leaving ya'll hanging. Over the Labor Day weekend I became a daddy :) . I now have a beautiful baby girl weighing 6 pounds and 7 ounces. I thought my wife would be cursing my name to the high heavens, but surprisingly she only forcefully insisted I get my tubes tied. :p

 

Here's a quick shot of my Wife, Rose and my daughter, Grace:

http://i109.photobucket.com/albums/n47/StanekM3/dsc0145.jpg

 

Now onto the car...

 

I purchased the car Spring of 04 and began doing bolt ons. I had met both Nate and Erik at Mid Ohio's BMWCCA events. After seeing Nate's M3 zip bye me with ease I had to see what was powering his black beauty. He was nice enough to let me take it to an open lap day, which, I admit, I could not stop hammering the car. It took a bit to get the feel of the car with the new found power, but I was hooked. I wanted it. After months of discussion and research of other Turbo M3s, Nate and Erik laid out a game plan for the car.

 

 

We decided on the compression ratio of 9.0:1 as a balance between throttle response and power achievable. Not many people make pistons for the M3, but luckily CP had started working on a standard bore size model for off the self production. I picked up a custom set at almost half the cost! For cylinder sealing, we chose ARP bolts and studs. The S50/S52 motors have very small distances between the bores, so Weber Racing drilled and tapped the block for 1/2" studs.

 

http://i109.photobucket.com/albums/n47/StanekM3/dsc0014.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0022.jpg

 

For a Head Gasket we chose the MLS type from Cometic. Standard Thickness was used to help aid in quench area/combustion design.

http://i109.photobucket.com/albums/n47/StanekM3/dsc0016.jpg

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Guest StanekM3

We broke ground and removed both the motor and transmission. The engine went first to NAPA Automotive to be cleaned, then to Weber Racing for the build. This how an M3 looks on jack stands, or better yet, how Nate's cars look :p

http://i109.photobucket.com/albums/n47/StanekM3/dsc0023.jpg

 

A picture of the block after cleaning and painting from NAPA:

http://i109.photobucket.com/albums/n47/StanekM3/dsc0021.jpg

 

A couple pictures of the block built from Weber:

http://i109.photobucket.com/albums/n47/StanekM3/dsc0018.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0019.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0009.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0015.jpg

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Guest StanekM3

The transmission and diff went to Koala Motorsport to be freshened up. The diff sports 3.17 final drive with a 45% lock up. The transmission is still your standard 5 speed with some TLC and hardened parts.

 

The head was freshened with new seals and guides. A 3 angle valve job was performed but really didn't show marginal results on Weber's flow bench. That's okay, that's what boost is for :D

 

While all this was going on, Erik and Nate were busy designing the exhaust and oiling solution. At first we used Nate's old oil pan. This caused problems due to his manifold poisition the turbo higher and further away. We found that oil was collecting in the return line and we were constantly getting oil in the downpipe. Since my turbo is a bit different and sits in a different relative location to the oil pan, we decided to run a collector tank and 12V pump to keep everything flowing smoothly from idle to high rpm.

 

http://i109.photobucket.com/albums/n47/StanekM3/dsc0013.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0034.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0032.jpg

 

 

After getting the engine back into the car and running NA. We then worked on the engine management and fueling. The TEC3R was chosen because of it's amazing ignition circuitry and scalablity in this application. It uses the 60-2 toothed wheel found on many BMW installations.

 

A picture of the TEC3..

http://i109.photobucket.com/albums/n47/StanekM3/dsc0012.jpg

 

I snagged a screen shot of what I guess is a log file Nate had open for analysis. This stuff is Greek to me :confused:

http://i109.photobucket.com/albums/n47/StanekM3/dsc0011.jpg

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Guest StanekM3

We decided to use a Supra TT fuel pump for our fueling needs. After some testing, it seems this pump will actually outflow a Walbro 255 @ the same voltage. It slipped in like butter.

http://i109.photobucket.com/albums/n47/StanekM3/dsc0035.jpg

 

While Nate was doing the fueling and EMS, Erik had fabricated a downpipe that was tested for fit on Nate's M3. We bolted it up with a few minor issues. Note the old oil return system.

http://i109.photobucket.com/albums/n47/StanekM3/dsc0029.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0027.jpg

http://i109.photobucket.com/albums/n47/StanekM3/dsc0044.jpg

 

The IC piping was than fabricated by Erik and the car came to life. Suspension and Rear sub frame followed with many curses. I have learned that bench top spring compressors are the way to go.

 

After a month of road tuning, track tuning, and logging we were ready to hit the dyno. The car was placed on a loaded dyno and Nate had the tedious job of running through each load point in seek of the best fueling and timing. What a boring job. After some low boost/ mid boost mapping we had upped the spool time by almost 500 RPM. The car was reaching peak boost around 4,600 RPM. We had planned on revving the motor to 7,000 RPM. As we turned the boost up we had found it was starting to taper down above 5,000 RPM. It turned out I had split (or nicked) the vacuum hose for the brake booster and we could feel a nice stream of air from a used Turbo XS blow off valve. We also were running the stock plug heat range and gap - I had left the NGKs in the garage.

 

Nearing the end of our time provision we decided to run with it and this is what she produced:

http://i109.photobucket.com/albums/n47/StanekM3/dyno1run1.jpg

 

We later re-dynoed with colder plugs, better vacuum system, New BOV, and some ignition changes. Torque and HP in the high revs were much better. At 7,000 RPM the car was making a nice and flat 652whp. I'll have to see if I can get this sheet scanned at work.

 

Once I figure out how to get video's off my camera, I'll put some up here. The car is a blast to drive on the street and track.

 

Any questions or comments don't hesitate to post!

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ZOMG, Congrats again Carl. I have some pictures I can email you when I get home from work.

 

In response to my cars being on jack stands, atleast I have enough common sense to not be nearly killed by a spring, atleast, not yet :) .

 

I'm suprised you took at picture of that particular log file.You actually broke the speed limit and accelerated uneedfully on an interstate. You're going to hell :D

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Guest StanekM3
No rematch fo you.

:D

 

I was just roughing your feathers. I've been beaten by many mustangs. I have learned the phrase "Can we start at 60mph?" plays a big part on the outcome of the race. :)

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Guest StanekM3
nice build, I might have missed it but what size turbo and how much boost.

 

Again my ADD mode kicked in and i just looked at the perty pictures.

 

Actually I think I only mentioned that in my introduction thread. The turbo is a GT35R (true 35R with a 40 compressor) with .70 AR.

 

Boost for the dyno run was 26psi on 100 Ocatane. I normally run 15psi on 93/94 which makes about 510 horsepower at the wheels.

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Guest StanekM3
So when can i get a race?

 

When my daughter is grown up and my wife is able to drive me to work :)

 

Whenever I can get some time to be out of the house on a weekend I'll take you up on that offer. I think National Trails is pretty close, but I could venture up to Norwalk. Unfortunetly I suck at the whole racing thing so it wouldn't be me driving the car.

 

I admit, I've had some fun with the car on the street when it was first finished, but the consequences aren't worth it with my new found fatherdom. I won't be putting anymore money in the car as its just something I'd do before starting my princess a college fund.

 

It's not the caliber of a rare and exotic sports car, just a BMW 3.0 I6 with a little bit of extra air. :)

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Guest StanekM3
wow. my work computer can suck a fat one...damn pics blocker

 

ironically enough, in 2-3 years, i think im going to be looking for a low mileage blue e36 m3 and throw on some bolt ons. that would be enough for me. 650whp id kill myself

 

From what I've learned, you spend a large amount of money to go a little faster. :)

 

Talk to Nate. He'll remove any type of purist NA feelings you possibly could hold.

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Guest StanekM3

Any questions you have, ask away. If I can't answer them I'll direct them to the builder(s) of the car. Nate on here has lots of experience with M3s and turbocharging. I'm sure his partner Tinman, and himself will be able to accomplish anything you want.

 

It wasn't cheap though...

 

Total invested into the car (including it) is around 27,650$. The purchase price of the car was 17,400$. I won't get into pricing of exacts, but that gives you a rough estimate.

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