BMW Marine Engine M30

[Rupert]

I have collected a number of these Marine M30 Engines with low hours. I would love to fuel inject them . What would be the most economical way to go about it? I obviously need an intake manifold with injectors and throttle body, aftermarket ecu , various sensors to feed ecu etc. What models came out with a fuel injected M30 motor and are these parts available second hand at a reasonable price? Is there a business that specializes in 2nd hand spares. I am on lake Cahora Bassa and have a boat where I use these engines in.They couple to the BMW stern drive leg . I have Mk1 and Mk2 legs. At present I have the 4 barrel Solex carbs fueling them and one with a 4 barrel Holley. I think the sound of a an M30 doing 5500 rpm fuel injected must be great. Any ideas

 

[freerider]

Wow, I wasn't even aware marine versions existed.

Welcome to the forum, hope someone can help you here.

Sent from my GT-I9100 using Tapatalk 2

 

[Psymon69]

Wow this is new to me aswell! maybe more pics of the engine itself?
This is the intake you are looking for I think

They came with the 533 or 535 or even the 530s I think. It should be relatively easy I think to put it on. I know stevin did the conversion from carb to injection on his M10b18 and I think they are pretty similar engines bar 2 cylinders.

All the best! parts should not be THAT hard to come by I would imagine:thumbs:

 

[Rupert]

Hi Crew
I have a quote from Spitstronics for Hardware but am looking for manifolds and throttle bodies X 2 The beauty of marine engines is WOT . Wide open throttle and the lovely sound. Dig in the scrap heap and find me two good manifolds plus throttle bodies and injectors. Keep me amused on the lake.
Am prepared to pay reasonable money but have a Scots ancestor.

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I think this was a Police boat from Kariba and notice the dual Alternators. Also to the right of picture was a bracket to hold seagull reserve motor. But does it fly . With present prop I can get it up to 4500 rpm ,but with a bit of fuel injection maybe a bit more.

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Wow this is new to me aswell! maybe more pics of the engine itself?
This is the intake you are looking for I think

They came with the 533 or 535 or even the 530s I think. It should be relatively easy I think to put it on. I know stevin did the conversion from carb to injection on his M10b18 and I think they are pretty similar engines bar 2 cylinders.

All the best! parts should not be THAT hard to come by I would imagine:thumbs:

Find me a pair(throttle bodies and injectors incl)
thanks
Rupert

 

[Peter@AEW]

You will also need the water manifolds as a lot of the sensors are located there.

Those are 3.0L motors if I am not mistaken.

You may wish to get the camshaft from a 3.2L motor as well as the distributor drive and the front engine cover.

Then you will see 5500rpm easily.

This is what the water manifold looks like on the fuel injected motors.

 

[Pfw28]

New to me also, these marine engines, but there is 1 thing that comes to mind. Is the cooling system closed or does it use lake water circulated back out? This will affect the mapping due to temp. issues. I've encountered open systems on dredging barges, hence the question. Once the injection is right, you'll be ready to Supercharge, give you 6k+ I'd bet, or an upgrade on your prop! Good luck.:thumbs:

 

[Rupert]

New to me also, these marine engines, but there is 1 thing that comes to mind. Is the cooling system closed or does it use lake water circulated back out? This will affect the mapping due to temp. issues. I've encountered open systems on dredging barges, hence the question. Once the injection is right, you'll be ready to Supercharge, give you 6k+ I'd bet, or an upgrade on your prop! Good luck.:thumbs:

The cooling system is closed with thermostat and heat ex changer with Jabsco type pump(raw water) driven off back of camshaft . I am keen to supercharge . What type of blower do you recommend? Guys around the lake think I have gone loopy. They all hate inboards. The 3 b's burn, blowup and breakdown. I am going to prove them wrong.

 

[Pfw28]

:thumbs:

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Oops, cell hell, lost the message! I'm no expert, Burgy at Project Shift will be able to assist, I'm sure, and they had kits on special not long ago, perhaps something that'll fit! He'd probably come to you to install for a holiday on the lake, too. lol. Drop him a pm.

 

[Rupert]

Hi All
Update on project. Have picked up all hardware from Spitronics. Caught Gautrain from OR Tambo to Hatfield and met crew from Spitronics. They were very helpful. Picked up a couple of manifolds with injectors and throttle bodies with TPS plus loom from Cliftons in Cape Town. R700 all in. Read the manual 4 times so should be ready to go when I get back. Nice thing about a boat is that you have constant load so no Dyno required . Have gone for Lamda sensor option for max fuel efficiency but not wasted spark so still using old distributor. I want to change that because it sticks out and is vulnerable to damage.

 

[Pho3niX90]

This is interesting, did BMW make boats? Or only engines for them? Or is it a normal engine converted to marine?

Subscribed :thumbs:

 

[Rupert]

BMW made a whole range of marine engines . Diesel and Petrol. The Petrol engines are versions of the M10 4 Cylinder and the M30 6 cylinder. The M30 was referred to as the big block straight six and was found shoe horned into the early 3 series in the 80's . I think as the 333i . The marinised version came out with a four barrel solex carb with dual cooling system with heat exchanger and a water cooled exhaust manifold. I have found a couple of these engines and z drives around zimbabwe and as I am on Cahora Bassa Lake the obvious thing to do is to run these engines in a boat as far more fuel efficient than a 2 stroke outboard especially if you fuel inject. here is my new manifold with injectors and throttle body and tps. Hope it fits in the suitcase. What a thing of beauty . All for only R700

 

[Rupert]

Here is the baby on the engine . A super charger would look good as well/
couple of details still left and I will be firing it up. Notice water cooled manifold . Battling to find spot for lamda sensor as it has to mount through water jacket . I think I have a plan. Machine down an 18mm nut and press fit it into 20mm hole /.

this is the timing pick up gear mounted onto front pulley.

 

[gimp73]

Here is the baby on the engine . A super charger would look good as well/
couple of details still left and I will be firing it up. Notice water cooled manifold . Battling to find spot for lamda sensor as it has to mount through water jacket . I think I have a plan. Machine down an 18mm nut and press fit it into 20mm hole /.

this is the timing pick up gear mounted onto front pulley.

 

[ters]

And, did you fire up the beaut? I only stumbled upon this thread now.
It is like reading a novel, the book taken away before you read the end.... Please update.

Ters.