MyE28.com DEV

How about a discussion about something other than the typical turbo upgrades. Here are some ideas I have thought would be cool to do some day.

turbo eta
e30 with a super eta
tiny turbo for instant spool and tq
2.79LSD
30+mpg hwy?
200hp/300tq

turbo m10
euro 518i (I have tried to buy 2 without success)
2900lbs?
200hp/200tq
30+mpg hwy?

Ecotec LNF swap
Truly latest technology for cheap money
2.0L
a twin-scroll turbocharger
cam-driven high-pressure gasoline direct injection
dual camshaft continuously variable valve timing
sodium-filled stainless steel Inconel exhaust valves
low-friction cast aluminum pistons with oil squirters
forged steel crankshaft
forged steel connecting rods
cast stainless steel exhaust manifold
5 speed RWD from Skyline/Solstice
260hp/260tq stock
euro e23 3300lbs
27/28mpg hwy?

I'm considering a turbo eta build in the future. A GT2560R spools right about now on a 2.7l M20. I don't know what kind of boost the 82-87 eta would tolerate without detonation though.

I would expect better city and highway mileage. The NA eta seems to have to work too hard to get up to speed and to maintain a high speed cruise.

S38 turbo

Pretty common in Europe, very common in Scandinavia and non excistance in the US?

id like to see something with VG turbos, once upon a time i had plans to use a he351vgt holset on my old b35 powered shark but never got past mock up, when i was playing with that turbo nobody had figured out how to run the servo and they were dirt cheep on ebay as "defective" take offs from dodges when they were having soot problems, got mine for $125 delivered.
i had planned on using a linear actuator on the rack driven by a couple Hobbs switches (found a actuator/controller combo that you could set 3 preset positions for under $80), its been a while but i think it had a range of 7cm to 21 or 24cm via sliding ring instead of vane's like a Garrett

couple pics of the monster on a modified 745 manifold, i milled out the opening to match and the odd flange of the holset was close enough to be made to work



its huge and would've needed about 1" sectioned out of the top of the frame rail on my e12 to clear

T_C_D wrote: turbo m10
euro 518i (I have tried to buy 2 without success)
2900lbs?
200hp/200tq
30+mpg hwy?

I considered tackling this if I had the resources. Better yet, why not 1 up things & do a turbo m42 powered e28? That could be interesting & I wonder what power output could be obtained?

Nebraska_e28 wrote:

T_C_D wrote: turbo m10
euro 518i (I have tried to buy 2 without success)
2900lbs?
200hp/200tq
30+mpg hwy?

I considered tackling this if I had the resources. Better yet, why not 1 up things & do a turbo m42 powered e28? That could be interesting & I wonder what power output could be obtained?

My next project is going to have the goal of a 12.99 and 30mpg HWY.

I have run a whole bunch of LNF/LHU GM 2l engine at work. They are amazing little engines. We have been running them over very demanding LSPI ceignition testing where we have seen peak cylinder pressures over 300 bar during an LSPI event. I accidentally killed one on the dyno, but it was an ECM software problem that caused the mishap. I have thought numerous times that it would make a great project car engine.

Brad D. wrote:I have run a whole bunch of LNF/LHU GM 2l engine at work. They are amazing little engines. We have been running them over very demanding LSPI ceignition testing where we have seen peak cylinder pressures over 300 bar during an LSPI event. I accidentally killed one on the dyno, but it was an ECM software problem that caused the mishap. I have thought numerous times that it would make a great project car engine.

That's great to hear. I already planning the next GM/BMW project.

Another thought I had previously... How much work would it be to pull off a m70 twin turbo in an e28?

Hard enough to keep a NA M70 running...

turbodan wrote:Hard enough to keep a NA M70 running...

turbodan wrote:Hard enough to keep a NA M70 running...

I'm not familiar with these motors, would that apply to an M70 running MS hence eliminating all the extra electronic crap?

Nebraska_e28 wrote:

turbodan wrote:Hard enough to keep a NA M70 running...

I'm not familiar with these motors, would that apply to an M70 running MS hence eliminating all the extra electronic crap?

To keep it "OE" you could run it on 2 MS units.

T_C_D wrote:

Nebraska_e28 wrote:

T_C_D wrote: turbo m10
euro 518i (I have tried to buy 2 without success)
2900lbs?
200hp/200tq
30+mpg hwy?

I considered tackling this if I had the resources. Better yet, why not 1 up things & do a turbo m42 powered e28? That could be interesting & I wonder what power output could be obtained?

My next project is going to have the goal of a 12.99 and 30mpg HWY.

I REALLY like this idea, too.

clongo wrote:

Nebraska_e28 wrote:

turbodan wrote:Hard enough to keep a NA M70 running...

I'm not familiar with these motors, would that apply to an M70 running MS hence eliminating all the extra electronic crap?

To keep it "OE" you could run it on 2 MS units.

That would be cool! (unnecessary but cool)

Nebraska_e28 wrote:

turbodan wrote:Hard enough to keep a NA M70 running...

I'm not familiar with these motors, would that apply to an M70 running MS hence eliminating all the extra electronic crap?

Eliminating the dual electronic throttle bodies would be a good start, possibly with two M20 throttle bodies. Then a six speed swap....

I researched this swap quite extensively. Check out choiceautowiring.com- the guy who runs it has alot of experience converting the m70 to a stand-alone system. He reverses the manifolds by swapping them side to side and ditches the electronic side of the throttle bodies and converts them to cable actuation. He builds his own harness and uses all GM sensors and a common GM computer. He also ditches the BMW distributors and runs 6 GM coils. The harness runs $1250 and comes with complete instructions. The only reason I scrapped the idea is the scarcity of a manual that bolts up to it. A T56 six speed can be made to work but requires LOTS of machining and a custom bellhousing...

turbodan wrote:

Nebraska_e28 wrote:

turbodan wrote:Hard enough to keep a NA M70 running...

I'm not familiar with these motors, would that apply to an M70 running MS hence eliminating all the extra electronic crap?

Eliminating the dual electronic throttle bodies would be a good start, possibly with two M20 throttle bodies. Then a six speed swap....

Those throttles are really the only reason I have had any trouble with M70s. I will eventually do something with mine. I've been looking at motorcycle throttles to possibly do a 12 throttle setup. Already have the 6 speed, too. If Aaron punts on his swap I'll buy the shell and finish the work.

I also really want to put the supercharger from a Caddy STS-V on an M6x. It runs upside down and has an integral 4 tube Laminova W/A intercooler. Port spacing is close, but some serious adapter work would need to be done because of the bolt spacing.

Or you could use proven bootable rotary power fits beautifully light and more then enough power and a huge parts base. My build is expected to reliably exceed 400 on e85. S5 full P"n"P and street port custom manifolds running a vg30 turbo mushimoto EVO intercooler.

Miller Cycle cam with small very quick spooling turbo. Would the idle be too rough?

Or sequential turbos, one more for high rpm power.

A supercharger is too easy, right?

How about an M42 turbo in a 2002? I've got one in the corner or my shop that i've been slowly rebuilding. This would make an awesome efficient 2002 swap motor...

Patrick McHugh wrote:How about an M42 turbo in a 2002? I've got one in the corner or my shop that i've been slowly rebuilding. This would make an awesome efficient 2002 swap motor...

The m42 is a common swap. Not sure I have seen a turbo m42 though.

Non BMW projects allowed?

If so I am seriously considering turbocharging my Alfa Milano with the Busso 2.5V6. The engine bay is tight , as in very tight, so I would steal the spare tire well in the trunk. The turbo could be very small, therefore eliminating lag. The reason for the small turbo is the trans-axle turns to glass over 300 rwhp. Besides, 250hp or so would turn that light little thing into a race car.

I guess I need to learn to read a turbo chart first off.

Does anybody know if Hartley enterprises still does the 'Busa engine with a bellhousing flange? Turbo one of those and you're in the money with an engine that weighs less than a full tank of gas.