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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 11-29-2010, 02:57 PM   #1
dhmc
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Going to fit an M62 into e46 By my mate whos bmw chief engineer :)

So decided to get an e46 not happy with the power other than the m3's

And superchargers are 4-6k alone.

So planning on swapping in a m62 4l from 540/740 apparently its 286hp

with remap and boltons is good for 310hp

Whole front end is carbon fibre - wings bonnet bumper, boot rear bumper and doors aswell

Also Poly-carb rear windows and rear screens

So weight isnt an issue, I know this isnt a popular swap but just after some ideas or links to other threads?

What should I look out for? The works going to be done by my mate whos the head of the engineering team at a bmw centre and he will be doing it on the wknds..

Mates rates and I'll be helping..

Sump and throttle is my first concern??

Also plan on lifting most if not all of the electrics from the 540 including locks barrels ecu loom

So basically a stripped out 540 in a e46 shell.

Thing is I dont know what engine management or other electricals I'll loose frm the conversion? I want to use m3 dials, which are fine swapping onto say a 330... even tho not everything works, dunno if thats ok on this swap?

Anyway in the early stages but excited to get started..
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Old 11-29-2010, 03:18 PM   #2
RockLee
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If you go through with this then put a Remus exhaust on it.
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Old 11-29-2010, 03:26 PM   #3
rowdy lee
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sump and throttle?

Main concerns? How about the diff? Swapping in a lim-slip?

Happy Engineering!

Good luck on it!
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Old 11-29-2010, 03:26 PM   #4
Alex323Ci
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sounds like a whole lot of work and parts and fabrication for power that you could get with a supercharger(that can be taken on/off and sold later). but i do like doing mods and if you plan on keeping it forever then go for it. subscribed
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Old 11-29-2010, 03:27 PM   #5
3coupe
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If you are looking for 310hp get a supercharger. An engine swap will cost a lot more. I've been looking for more power and have been researching it for a while and the only reasonable way to get more power is FI.

Personally I think it would be a sick swap. But be prepared to pay more than you estimate. Engine swaps are a lot more difficult, especially if the engine was never offered in the car.
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Old 11-29-2010, 04:07 PM   #6
GA-e46
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i've read of a similar swap done to a white convertible e36, try looking it up on bimmer forums. IMHO it would be worth it to supercharge. with all the carbon fiber modifications you plan to make you'll end up saving more weight with the smaller engine. also you probably end up spending more money fabricating one off pieces to make the m62 work.

when you start to consider suspension also, the extra weight of the 8 vs 6 cylinder will become a signifcant variable also. regular off the shelf suspension pieces will probably not be applicable.

but if the larger displacement is really what you seek, then hey its your project. either way good luck with the build, i'm subscribed.
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Old 11-29-2010, 04:55 PM   #7
iansanderson
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shouldn't be too challenging as far as electrics go. The E39 5 series and the E46 share many things in common, electronically. The M54 is an engine option for the E39 too. The real challenge will be fitting the engine into the bay. The E39 has more space than our cars do.

You do realize that the M62 and M62TU are horribly unreliable and you will average about 16 MPG in the city, right?
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Old 11-29-2010, 04:58 PM   #8
Broach><330
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that would be legit my buddy is doing the same thing with an e30 gona be ballin son
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Old 11-29-2010, 05:30 PM   #9
dhmc
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well it would be running on LPG...

The carbon fibre is already on and installed..

I just want v8 torque!

Also its more of a staggered expense rather than the one large one off bill!
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Old 11-29-2010, 05:32 PM   #10
dhmc
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Ok so say I stick with the 328... Where would/who would I go to for full rework of internals? crank lightweight pullies forged pistons/cons etc?

Car weighs about 1200kg i guestimate
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Old 11-29-2010, 05:35 PM   #11
dhmc
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Anyone know much about schrick camshafts?
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Old 11-29-2010, 05:36 PM   #12
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Originally Posted by dhmc View Post
well it would be running on LPG...

The carbon fibre is already on and installed..

I just want v8 torque!

Also its more of a staggered expense rather than the one large one off bill!
Idk sounds quite complicated, possible with lots of money and time, but somehow deep inside i really dont think that this swap will happen, you can shove a v8 into an e46, its been done, its the electronics that are the hard part.
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Old 11-29-2010, 05:37 PM   #13
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pm PEI330Ci
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Old 11-29-2010, 05:38 PM   #14
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If you go through with this then put a Remus exhaust on it.
wow that sounds sweet!
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Old 11-29-2010, 06:21 PM   #15
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Originally Posted by dhmc View Post
Ok so say I stick with the 328... Where would/who would I go to for full rework of internals? crank lightweight pullies forged pistons/cons etc?

Car weighs about 1200kg i guestimate
You could stick a 330 engine in, add cams, headers, ati damper and a supercharger kit.

Should be good for at least 350+ whp and alot less hassle.

This is the route I went (not got cams yet) and I would do exactly the same again.
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Old 11-29-2010, 09:56 PM   #16
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sub'd
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sometimes i'm into it and my one hand gets tired, i try switching, but then it's like someone with lou gehrig's trying to peel a carrot.
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Old 11-30-2010, 04:34 AM   #17
dhmc
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Arent the 28 and 30 the same engines other than displacement??
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Old 11-30-2010, 05:05 AM   #18
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Originally Posted by dhmc View Post
Arent the 28 and 30 the same engines other than displacement??
PM kevinterkelsen as he has a 328->330 conversion with built internals running 14psi

Clicky
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Old 11-30-2010, 05:43 AM   #19
dhmc
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While I'm here is there any reason why the M3/CSL air box cant be retrofitted to the 328? I dont know much about these engines used to fords! where everything is fair game!

If not do anyone manufacture a lightweight/air flowed aftermarket inlet manifold.. There's a carbon fibre CSL one but they informed me it wouldnt fit, which makes me what it even more lol.

Dont see the point swapping to 330 engine for an extra 28hp especially if im going to SC
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Old 11-30-2010, 05:52 AM   #20
dhmc
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http://cgi.ebay.co.uk/BMW-M3-2-5-lit...item414d14791d

might get these guys to gas flow my heads for me
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