Supercharged e46 M3 Build Videos

[Crash_Nemesis]

So, I thought it would be easier to put all the build videos from Supercharged M3 build Peter and I did over the last 8 months. The full thread can be viewed here -- http://www.bmwfanatics.co.za/showthread.php?tid=51678

On to the videos. Enjoy.

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[video=youtube]https://www.youtube.com/watch?v=Isvu3wHTZcg&list=PLtg0qB0ER7k5xQJIwzZDg_veJX-Cz_EJs[/video]

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More info on the car.

Production date: 14th May 2001. Registered 2002 model e46 M3.
Carbon Black, Harmon Kardon sound system, onboard phone and business front loader with Cd upfront and 6 cd shuttle at the back.

Bought the car on July 25th 2012 from the Previous owner MattQ in Cape Town. The car already had a reputation for being supercharged and heavily modded, but had fallen from it's glory days as many parts needed replacing. He has also removed his supercharger kit, so the car was now back to stock.

These are the major OEM Parts I replaced. Power Steering Pump and all hoses. New M3 Propshaft from BMW Germany. Rebuilt Limited Slip Differential with M motorsport 3:91 gears. New bushings for entire rear suspension. New OEM plastic covers for various parts of Engine bay and wheel arches (were missing). Various Fuses that required replacing. Battery.

Mods: Entire engine rebuilt by Axis engine works. Forged CP pistons (11:5:1 compression). Forged HPF connecting rods built by Crower (HPF turbo M3's run these rods). ARP L19 studs and bolts. Vac Motorsports High Perfomance coated main end and big end bearings. Vac Motorsports uprated oil pump. Vac Motorsports High performance Race Valves and single groove locks. Cylinder head ported and flowed with 3 angle valve cut at JB engineering (Same engineering workshop RGM use for their engines). Block honed with 45° honing cross hatch pattern for easier oil distribution. CP pistons rings filed to correct size for metal expansion. Car has fully adjustable Bilstein PSS10 coil over suspension as well as UUC adjustable rear camber arms, and UUC swaybarbarian front and back swaybars with endlinks. Polyurethane rear trailing arm bushes. Turner Motorsports front camber plates (Can dial in over -4.5° camber on the front). UUC short shift kit with ZHP gear knob. AEM Boost and Air Fuel ratio gauges mounted in HPF mickey mouse pods. Custom forged 19" Vorsteiner Narrow and wide lightweight rims. Carbon Fibre AC Schnitzer racing mirrors, AC Schnitzer top mounted brace, HPF under Brace. Turner Motorsports Rear subframe reinforcement plates. Custom rear shock tower Brace. Umnitza LED predator Angel eye Kit with Xenon projector lamp retrofit. Rear LED brake lights. M3 CSL front Bumper and M3 GTR Vented bonnet. Carbon vinyl interior trim.

VF engineering Supercharger kit boosting 4psi (for now) with Tial Q 50mm Blow off Valve, Devils own Water Meth kit from Project SHift and running Project Shift Alpha N software with Bosch Green giant 440cc injectors. Just installed an uprated Pulley tensioner for when I go to 9psi wheel.

Enjoy the build. More videos coming soon.

 

[TrickTrick]

Amazing, just amazing. Pretty sure I've seen this car once or twice on the roadraise:

 

[Crash_Nemesis]

Thank you. Car is usually in bedfordview area or William Nicol

 

[Peter@AEW]

Thank you. Car is usually in bedfordview area or William Nicol

....and in the recent past when on William Nicol a silver e38 is in front of it

 

[Crash_Nemesis]

Thank you. Car is usually in bedfordview area or William Nicol

....and in the recent past when on William Nicol a silver e38 is in front of it

LOL... :fencelook:

 

[TrickTrick]

Thank you. Car is usually in bedfordview area or William Nicol

Then its definitely the car i've seenraise:raise:

 

[Spiro]

so i've watched all the videos during the build...seen the car on the road... and here i am on this sunday watching all the video's again...


Chris is your Belt Still coming off ?


and while we on the topics of belts.. did you manage to sort out the pulley for the belt in the car ?


:=)::=):

 

[Peter@AEW]

Belt sorted out for the time being.

PS bracket sump bolt was loose.

We will do a mod during the week to support the pump better.

 

[Crash_Nemesis]

Yeah... Belts not coming off anymore. A bolt on the newly installed power steering pump had come loose. So the PS pulley sat skew and kept throwing belts. Such a small thing caused so much kak. But it is sorted. Took so long to figure out because the car is so low, I couldn't get under the car till Burgy lent me his Jack and Nikhil came past with his jack too and gave me a hand raising her and looking under. (also used Burgy's jack stands - Thank you). LOL. Without the tools I just sat staring at the car waiting for a miracle.

None the less. Had a run with a 435i m performance pack tonight. Left him 4 cars at least. I'm still running base file. Car chews fuel like mad and retards timing as I have not put on the proper tune file on. TOMORROW... Burgy installs the new tune file. I wanted to fix the belt problem first before installing the tune file. Will update with further info this week.

 

[Crash_Nemesis]

Some more pics from the build.

ENGINE almost finished.​

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Engine going in.​

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The supercharger​

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Supercharger on the engine being test fitted.






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The blow off valve.

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Supercharger mounted in the car.

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Sneak updated pic of the car ...​

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[Alain]

Have you boys got any dyno stats yet? :fencelook:

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Also with that shorter diff ratio where will she run out of steam? Just so that I know where I need to be to get away from you :biglol:

 

[Elton_LV]

Tooooo amazing


Sent from my iPhone using Tapatalk

 

[Crash_Nemesis]

Have you boys got any dyno stats yet? :fencelook:

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Also with that shorter diff ratio where will she run out of steam? Just so that I know where I need to be to get away from you :biglol:

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Hey Alain, good to hear from you man.

Just loaded new map today. Boy, what a difference. Car drives smoother, is more economical, no more lumpy cold ilde or retarding of timing. Can't believe I drove the car with a base map for two months while we sorted out these teething issues.

THE RESPONSE.... holy shitballs. I get kicked into the back seat. It's addictive. I love it... I LOVE IT..

Well done Burgy!!! LEGEND!!! This alpha N tune has made such a difference. I don't care if the new tune makes no more extra power, just the responsiveness the car now has, the drive, it's almost like a stock M3, smooth when driving her normally, but as if I always had the sports mode on. Before this tune, with the base map, the car was slow to respond. It was lumpy, it was irradic. Cold starts had the car coughing and if I suddenly tried to accelerate the car would hold back and retard timing completely. all in all, the base map was generally just a bitch to drive. So, in that regard, the car feels like an M3 again. THANK YOU Burgy.

We will go Dyno this week. I am seeing 3psi, sometimes 4psi. So, I'm guessing maybe 240-250wkw. I dunno. she feels good. JUST CRAZY wheel spin, even in third if I suddenly put my foot down. DTC light is going off like a German trance party in my dashboard. She feels good.

Regarding the 3:91 diff question. This diff raises the revs by 125-130rpm when cruising along in 6th gear. So it is not by much. I should lose about 15kph at top end. But I don't have the balls to even take the car that fast yet. There is a video of a 3:91 diff M3 vs a CSL M3. The 3:91 still reaches above 280kph and almost 300kph, way before the CSL.
Theoretical top speed of the M3 is 320kph but it will never get there due to drag coefficient. So, 300kph top speed from a diff swap is still good.

Below is an extract from Turner motorsports webpage.
"Hands down - one of the best performance upgrades you can make to an E46 M3, E60 M5 or E63/E64 M6! With almost no downside you can make your BMW much quicker by swapping in a new ring & pinion gear set. The R&P acts as a torque multiplier, getting you into the power band quicker in each gear. There is an 8% increase in torque at the wheels with the shorter R&P. Want to make your car faster off the line or out of corners? This is what you need.

3.91 Gearing Example: 2004 M3, 6-speed manual, 275/35-19" rear tires

70 MPH Cruise
Ratio -- Gear -- Speed -- RPM
3.62 --- 6th -- 72 MPH -- 2,750 RPM
3.91 --- 6th -- 70 MPH -- 2,875 RPM
5th Gear Speed at Redline
3.62 --- 5th -- 175 MPH -- 8,000 RPM
3.91 --- 5th -- 162 MPH -- 8,000 RPM
What the above graph indicates, is what speed the car will be doing when you change to 6th.

Why do the test in 5th gear? Because 6th does not have the mechanical advantage to get past wind resistance at these speeds - it is more of a cruise/overdrive gear. Using 5th for comparison purposes is much more relevant than having to take into account wind direction, resistance, grade, elevation, tire sizing, etc. These numbers are for comparisons among gear ratios only, not to determine what your M3 will top out at.

So, I've seen videos of 3:91 geared M3's still doing over 280kph before topping out, but these are not supercharged M3's. If you are able to add forced induction that can add enough power to overcome the drag inserted on the car at 280kph, then they may do well more than 280pkh. Remember, Top speed is limited by two factors, drag and gearing. If a stock M3's top speed is drag limited at 290kph (and had more rpm to rev) then adding a supercharger or any other form of power adder will improve the top speed by overcoming the drag coefficient. Changing my gear ratios but adding a supercharger may cancel one another out... So, to answer your question, I actually have no idea where she will top out. ha ha

But for your car, if you definitely want to do more than 300kph, keep the 3:62 gears.

Hope this helps.

 

[Crash_Nemesis]

Saved FOR UPDATE....

 

[Alain]

:bravo: you like a info centre buddy, thanks for all that info! I think you seriously addicted to the power like I am :rollsmile: so now we must check your power output and if similar to mine then we can feel the difference between the two, what does that diff ratio set a man back? How much faster does it make them?

 

[Crash_Nemesis]

:bravo: you like a info centre buddy, thanks for all that info! I think you seriously addicted to the power like I am :rollsmile: so now we must check your power output and if similar to mine then we can feel the difference between the two, what does that diff ratio set a man back? How much faster does it make them?

BMW 3:91 ring and pinion can be anywhere between R6000 up new.

Turner sells them for R7000.00. You still obviously need to import and then get a proper diff place to install it for you. The diff place we originally sent my diff said the ring and pinion wouldn't fit. They also broke all the bearings.

I had to get all new bearings, which isn't a problem. I got boetie budler to rebuild the diff with all the new internals. He charged me R2000. The parts for all the bearings was about R1000.

Watch this video to see the difference the 3:91 gears makes in acceleration between a stock car. Camera car is stock 3:62 gears, middle is 4:10 gears and far from camera is 3:91. Enjoy.

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[Alain]

dude thats huge