E30 M30 swap owners...which gen m30 did you use?

[SpunkyE30nOk]

I'm getting ready to start on my motor swap from a m20 to a m30 I'm using the 2nd gen m30 from a e23 86 735i w the motronic system. I know I have to use the e34 oil pan and the gen 3 m30 is most ideal but the e23 was free so thats what im going with. I plan on doing custom exhaust *straight pipes to a magnaflow 2.5in dual in/single outlet*, and adding a Conforti chip. I have a couple questions.

1st. What Generation motor M30 did you use?
Gen I w the L-jet injection i.e e12, e9
Gen II w motoronic injection ..i.e e23/e28
GenII w advanced motronic inj..i.e e32/e34

2nd. Did you leave the motor stock? Add boost, chip??

3rd. What kind of power can i expect? I know stock is 182hp but thats with a cat converter and i won't have one of those. In Euro trim i think hp was 208 or 218hp

[ping65810]

I used a late generation e32 m30, out of a 1990 735iL. So far, stock, but no cat. At some point it will see a chip, etc

[Garageaholic]

My stats:

Engine 3.5L M30B35 from 1989 735i: Position 2 1/2
New distributor cap/rotor
Complete 3"-2.5" exhaust w/ no cat.
Magnaflow 14833 square tipped muffler
Custom E30M30 engine mount brackets www.e30.de
E28 535i radiator
E32 8mm Ignition wires

Turbo Cast iron turbo exhaust manifold
TO4E Turbo
Tial External Wastegate
3” downpipe (ceramic coated) 
Intake pipe (ceramic coated)
Charged air pipe (ceramic coated)
30lb injectors
Billet RRFPR
Bosch bypass valve
K&N Filter
All silicone couplers and stainless hose clamps
Oil supply/return line and fittings
Modified pass. Motor mount bracket

Steering E36 1995 M3 steering rack (3 turns L-L)
E36 M3 tie rods
New reservior, HP hose

Drivetrain JBR 8.5# lightweight flywheel
Brand new Sachs clutch kit E28
Tranny E28 '85 535i 5 speed
Re-manufactured Driveshaft
3.25 LSD rear end
S.S.K. 40% reduced throw
E30 hard rubber tranny mounts
Polyurethane motor mounts

Suspension H&R sport springs
Bilstein sport shocks
New upper shock bearings F/R
New wheel bearings F/R
Front shock tower brace bavauto
Suspension techniques ASB kit 22/19mm F/R
New front sway bar links
Powerflex urethane rear subframe bushings
New trailing arm urethane bushings
New control arms - hard rubber CA bushings

Brakes TMS cross drilled rotors
Axxis ultimate ceramic pads
4 Stainless steel lines
Amber high temp brake fluid

Custom Amber LED mood lighting
Radiator fan LED status light
Red gauge needles
Stock Options Cruise Control
Electric windows/mirrors/sunroof
BMW alarm/keyless entry w/ keyfab
ABS
Fog lights
Analog clock

Exterior Styling Jline 17x8 20RL2 wheels F/R ET: 20/15mm
Dunlop sp sport FM901 215/40ZR17 tires
89+ bumper swap
M-tech II Rear spoiler (lower half)
Zender sideskirts
"is lip front spoiler
Shadowline trim

Interior Styling BMW E30 black sport leather seats
Rear seat headrests
Rearview mirror with maplights
Center armrest
///M technic II alcantara 360mm steering wheel
///M pedal set w/ dead pedal and knobs
Custom alcantara boots with ///M stitching
A-pillar gauge pod with turbo and A/F ratio gauges
Aluminum gauge rings

Lighting All red taillights
Angel eyes headlights w/ eyebrows
Lamin-x headlight/foglight covers
Mcollough HID headlights kit 8000k
Smoked front turn signals
Brand new fog lights OEM

[Garageaholic]

Hope that wasn't too much info.

Expect around 190hp without a cat in the second gen M30. It still should be a good boost considering that the TQ is insane. You can always upgrade to a M30B35 gen III head later on down the road.

Not to mention, your engine is a perfect candidate for turbo-charging with it's low stock compression of like 8.5:1. Good luck!

[SpunkyE30nOk]

Hope that wasn't too much info.

Expect around 190hp without a cat in the second gen M30. It still should be a good boost considering that the TQ is insane. You can always upgrade to a M30B35 gen III head later on down the road.

Not to mention, your engine is a perfect candidate for turbo-charging with it's low stock compression of like 8.5:1. Good luck!

thanks there is never too much info..the more the better... I want to add a turbo on down the line but I can't jusitfy spending 5500.00 on a turbokit which is more than 2x the cost i paid for my e30...but ya never know i may get power crazy :) . Btw did you hook your obc back up and how is it working for you?

[Garageaholic]

Yep, power is a friggin drug. You can't get enough of it.

[euroshark]

Early Euro "L" Block, 9.3:1, 264 cam, 93.355mm pistons, 3453cc instead of the B34's 3430cc. Makes 218hp and ~232ft/lbs stock... It revs a little better than the later ones because of the shorter stroke, bigger bore, and hotter stock cam.

Not to mention, your engine is a perfect candidate for turbo-charging with it's low stock compression of like 8.5:1. Good luck!

The US B34 actually had 8:1 compression! Weak!!

[bmw335isturbo]

http://www.cardomain.com/ride/629515

http://www.cardomain.com/ride/2546462

One is m30B34 extreamly modified Turbo that is the first link.and sig.
you will notice the big cam 292
second link new car m30B35 E34 awsom road/track car.

[Garageaholic]

I love that turbo setup you have. Where did you get the turbo kit from and how much was it?

[bmw335isturbo]

I love that turbo setup you have. Where did you get the turbo kit from and how much was it?

I saw your post at mye28
turbo kit is from TCD stage 2+ I have extras it took that spical clutch disk to hold the power but todds clutch holds fine I beleve I had already bought my disk when he came out with his.

What fuel pump are you running?

I was running 42# injectors after market fuel pump with stock pressure 35 psi I was running 12:0:1 A/F that was bouncing off 6900-7000 RPM's
I might have been close to 14:7 A/F at 15psi

[Garageaholic]

I have the stock fuel pump right now. Todd never mentioned anything about getting an upgraded fuel pump. Can my stock fuel pump handle 65psi of fuel pressure? That is what I was told to set it at at 9psi boost with 30# injectors

I haven't tuned it yet, I will do that soon. As far as the clutch goes. Do you think I'm going to have clutch problems? I really don't wanna take my tranny out because it's a Biotch to get to and damn near impossible to remove/install. Do you think I'll have problems if:


I stick with my stock E28 sachs clutch? Maybe, just maybe the only problems i'll have is with the tires, NOT at the clutch..

[SpunkyE30nOk]

I have the stock fuel pump right now. Todd never mentioned anything about getting an upgraded fuel pump. Can my stock fuel pump handle 65psi of fuel pressure? That is what I was told to set it at at 9psi boost with 30# injectors

I haven't tuned it yet, I will do that soon. As far as the clutch goes. Do you think I'm going to have clutch problems? I really don't wanna take my tranny out because it's a Biotch to get to and damn near impossible to remove/install. Do you think I'll have problems if:


I stick with my stock E28 sachs clutch? Maybe, just maybe the only problems i'll have is with the tires, NOT at the clutch..

are you running an aftermarket flywheel or stock? can you shave a flywheel down for the m30? I running a stock flywheel that i had shaved down to 14lbs *wanted a safe range so only took off 5lbs* and i love it.. she revs so much faster now and I can even run the A/C on and not feel like its sapping all the power....I have a z3 shifter in right now I can still use that for my swap right?

[Garageaholic]

I have a JBR lightened flywheel it's 8.5#

I love it. simple as that

The z3 shifter is fine for the swap, just watch your rubbing your shift rod on your driveshaft. If you have to bend the shift rod, then go for it.

You have A/C in that car with the M30 in it? daaam, you must have a really frontheavy car

[SpunkyE30nOk]

I have a JBR lightened flywheel it's 8.5#

I love it. simple as that

The z3 shifter is fine for the swap, just watch your rubbing your shift rod on your driveshaft. If you have to bend the shift rod, then go for it.

You have A/C in that car with the M30 in it? daaam, you must have a really frontheavy car

i still have my m20 in right now, but even when i do add my m30 Im keeping A/C because this will still be my DD...I'm going to use engine position #3 so the Lbs balance of my car should still be close to 50/50 or 49/51 atleast..I was having power steering woes and got pissed off and cut the belt off so I may just continue to run without it..the front end is pretty light and I do like how much more road feel you get without power steering

[Garageaholic]

I think that your 88 325is with the M20 alone is like 53/47 stock. When you add an extra 100lbs in the front, it's going to be even more favorable toward the front. If you put A/C in there with a heavy front mount compressor and evaporator, you're talking about like 60/40. But like you said, if it's your daily driver, then you aren't really going to push it enough to notice much (except on and off ramps on the highway).