2011 M3 E93 Stroked Twin Turbo

[///M Power-Belgium]

Originally Posted by SVH

I'm out of State during the week (work and all that) and use my DD to commute. I'm also have limited access to free WIFI and just the phone.
Never posted a video either. Guess I'll have to learn.
Weekend approaches...

OK my friend . Roger that . Would love to hear your car . I'm pretty sure someone can help you to post your video ..
We have time.... In the weekend

[Redd]

Originally Posted by jcolley

That's a statement I couldn't agree with more. I'm not a fan of sleeving any of these given the cylinder spacing.

Sleeving is done at the block, no? Why would cracked heads be due to sleeving? Curious.

[jcolley]

Originally Posted by Redd

Sleeving is done at the block, no? Why would cracked heads be due to sleeving? Curious.

I'm assuming that he meant in the region of the block deck that interfaces to the head. With 98mm cylinder spacing, going beyond 94mm bore makes things reaally tight. Now, go even further to get a 94mm bore with room for a sleeve and it's even thinner. Now add in differing coefficients of thermal expansion from iron or steel sleeves to an Alusil block and it's pretty easy to force some severe tensile stresses in an area of low thickness. Note that hypereutectic aluminums such as alusil have much lower thermal expansion coefficients than normal aluminum, but it's still higher than steel or iron.

[Redd]

I see. Thanks for the explanation.

[SVH]

Originally Posted by jcolley

I'm assuming that he meant in the region of the block deck that interfaces to the head. With 98mm cylinder spacing, going beyond 94mm bore makes things reaally tight. Now, go even further to get a 94mm bore with room for a sleeve and it's even thinner. Now add in differing coefficients of thermal expansion from iron or steel sleeves to an Alusil block and it's pretty easy to force some severe tensile stresses in an area of low thickness. Note that hypereutectic aluminums such as alusil have much lower thermal expansion coefficients than normal aluminum, but it's still higher than steel or iron.

Well said. I agree with that.
If i understand corretly the 94mm bore is also closer to the water/cooling jackets. Not sure if I stated that correctly though...

[jcolley]

Originally Posted by SVH

Well said. I agree with that.
If i understand corretly the 94mm bore is also closer to the water/cooling jackets. Not sure if I stated that correctly though...

That would follow, yes.

I believe the VS Motor TT S85 didn't bore the cylinders at all, but inserted undersize bore sleeves (90mm maybe?) to strictly add strength.

Video here because F_(k yeah.

[GORDON.M3]

Damn, I'm looking at the motor and it looks like it cost more than the car alone!

[SVH]

Originally Posted by jcolley

What's the new stroke for the engine?

Updated the info. Bore and Stroke is 93 x 78

[Mvy]

Awesome build. You have some dedication to the platform man. You must have spent a fortune.

[///M Power-Belgium]

Originally Posted by SVH

I'm out of State during the week (work and all that) and use my DD to commute. I'm also have limited access to free WIFI and just the phone.
Never posted a video either. Guess I'll have to learn.
Weekend approaches...

We are 4 weekends further...

[SVH]

Originally Posted by ///M Power-Belgium

We are 4 weekends further...

LOL. Your right!!

[///M Power-Belgium]

Originally Posted by SVH

LOL. Your right!!

Let us hear the sound of thunder !

[SVH]

Originally Posted by ///M Power-Belgium

Let us hear the sound of thunder !

Cold Start....

[///M Power-Belgium]

Originally Posted by SVH

Cold Start....

Ohhh.....Yes ! Your beast sounds very angry . And I love it !
Awesome ! Thanks for sharing my friend

[E92_Toronto]

Originally Posted by SVH

Gintani Stage 3 Twin Turbo Build
2011 BMW M3 Convertible

Engine:
4.2 L Stroker
Bore & Stroke: 93mm x 78mm
Custom Stroker Crank
Gintani Twin Turbo @ 7.5 psi
Mahle Custom Pistons
Carrillo Forged Connecting Rods
ARP Connecting Rod bolts
BE Rod Bearings
WPC Treated Main Bearings
NGK Iridium Sparkplugs #9
GT3076 Tial Turbos w/ Billet Impellor
CSF Oil Cooler
Heat treated powder coated manifolds and piping
Custom 3" Valvetronic Exhaust
Stock Compression ratio
Tuned for 93 oct.

Mods:
ACM Shift Boot w/ [COLOR="Blue"]BLUE [/COLOR]stitch
ACM installed OEM CF Rear spoiler w/ [COLOR="Blue"]BLUE[/COLOR] pinstriping
ACM Headlights, blackened, with BMW strips (right side only)
ALCON SS BBK - 394mm front, 380mm Rear w/[COLOR="Blue"] BLUE [/COLOR]painted Calipers
BBS CH-R Wheels in titanium finish
BMW Performance Steering Wheel w/ [COLOR="Blue"]BLUE[/COLOR]
BMW Illuminating Door Sills
BMW Wind Screen
BMW Performance Seats in Black leather w/ [COLOR="Blue"]BLUE[/COLOR] stiching
CSF Oil Cooler
DEFin Titanium Brace
DINAN CF Strut Tower Braces w/ [COLOR="Blue"]BLUE [/COLOR]Strut Tower Rings
Escort 9500ci Laser Jammer / Radar Detector - hardwired
Gintani Stage 3 - 4.2 L Engine build
Gintani Twin Turbo @ 7.5 PSI
Gintani Enhanced DCT oil pan
Gintani - Custom Painted Turbo Manifold & Throttle Bodies in [COLOR="Blue"]BLUE[/COLOR]
Gintani - Custom Full 3" Valtronic Exhaust w/ 100 cell resonators
Gintani Meth Kit - trunk mounted
Gintani CF Side skirts
IND CF mirror covers, M5 style w/ [COLOR="Blue"]BLUE[/COLOR] pinstrips
IND Start Button & "M" Button - [COLOR="Blue"]BLUE[/COLOR]
IND Carbon Fiber Interior Trim Set w/ [COLOR="Blue"][/COLOR] door trim pinstrips
iND Custom OEM carpets w/ [COLOR="Blue"]BLUE [/COLOR]Trim
IND Matte Black Kidney Grill
IND Matte Black Side Gills with smoked LED side marker
KW DDC ECU Coilover
Pedal Haus Extended Billet DCT Shifter Paddles - [COLOR="Blue"]BLUE [/COLOR]Inlays
Pedal Haus Quick Release Lisence Plate Mont
PSS 19/35/255 front & 19/35/275 Rear
RPK GT-4 Front spolier w/ [COLOR="Blue"]BLUE[/COLOR] Pinstrip
CF Rear Difusser
SCHROTH Quick Fit harness
Turner Motorsports Heavy Duty Metal Underside Complete Tray
3D Design Gas & Break Pedals w/ foot rest

OEM Parts - new
OEM Battery
OEM Alternator
OEM Starter
OEM Engine Mounts

To Be Installed
Arown Gauge

Several years ago, after 20K miles running around with the ESS 600 and 650 SC's, my M3's rod bearings spun and damaged the block and crank. Looking at the replacement costs for a stock motor I decided to instead have the motor rebuilt, stroked, with proper clearances on the crank and rod bearings. The goal I wanted was a strong motor for FI, stroked for torque to off-set the convertible's added weight, to run at a reasonable boost. I wanted to utilize the stock fuel system. Try not to complicate things too much. Reliability and longevity were the goal.Attachment 1922907
Attachment 1922909


I did drove the car from LA to Denver, about 1,000 miles. My intentions was to drive back to the East Coast. I went easy on the motor all the way. Along the way, going thru California to Nevada, the outside temp was 112 F. Air Conditioning was on at it's coldest setting, 60 F, with the engine temp running no higher than 225 to 228 F. Posted speed limit was 75mph, while Nevada and Utah was mostly 80mph. Engine temp was typically 210 F. Gas mileage came out to be almost 23 mpg (logged). Gas is also a dollar less (still only 91 oct.) once you leave California! Around town I'm getting about 14 mpg, about what I expect. Unfortunately the alternator quit and I had to ship it back to Gintani. It was cheaper to ship it back than have the local BMW dealer install a new alternator. BMW wanted over $900 just for the part plus they estimated labor costs around $1,200 + since the sub frame has to be dropped to even get to the alternator. (there simply is no room left in the engine bay with the turbo set-up, everything is extremely tight!). Gintani fix the car at no cost. Then it was shipped to ACM in New Jersey.
Attachment 1922912


Although it took an inordinate amount of time to complete, break-in, and test the car, the final outcome is a well build, solid engine and turbo system with the kinks worked out of it. While I have had it home only a short time I can report that the engine and TT system work great and the car's performance is everything that I had hoped for. It pulls "like a angry pit bull" and pins me in the seat all the way! The engine bay looks OEM. Boost come on strong and quick, with full boost at 3,000 rpm. Rear wheels spinning through the gears. Fair to says she has 600+ whp on stock fuel system. The exhaust is very loud (almost too loud- attracts attention ) when fully open, yet quite quiet when the valves are closed. Still drivable around the neighborhood. Open the exhaust valves and it's definitely louder. The whole TT set-up is definitely not a simple boxed kit you can buy and install yourself. There no more room in the engine bay, everything is very tight. Hopefully next spring I'll have the car Dyno'ed and numbers to put up for everyone's view. I still have a Arown to install and I'll also put on some fatter tires (she needs them badly!). In the mean time I'll just enjoy her before winter arrives.
Attachment 1922908

I'd like to thank ACM and Gintani for all the work they've done in helping me put this build together. She's a beast. She'll keep up with the SC'ed coupes and sedans and then some. And it's one of a kind.

I'd give up both my nuts for this car

[acarr6]

Originally Posted by BramptonE90

I'd give up both my nuts for this car

There’s a 4.4L stage 2.5+ gintani Sc local to you. Always for sale for right price

[commedeschatons]

Top down with this must be quite the experience !

[HolyChitMeng]

This is awesome man!