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E34 (1989 - 1995)

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  #1  
Old 11-28-2012, 03:57 PM
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e34 touring engine swap options

I have found a great deal on a 525iT that has a bad motor. It overheated and blew headgasket and lifters. It also as an automatic tranny. I'm not a big fan of the m50 anyways its weak and not good on gas. The car is in great shape, straight, interior is great.

Questions
1. Do 6 cylinder and v8 models have different steering rack? (I have an e39 and know v8s and 6 cylinder may not be a direct swap)
2. I have found some m62 non vanos and 6 speed on craigslist how hard is that swap? Anyone do it before(link)
3. I was thinking about a small block chevy swap is that a feasible option for a 2k budget?
4. How much does a m50 run these days? I would have to turbo it though.
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  #2  
Old 11-28-2012, 04:00 PM
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  #3  
Old 11-28-2012, 04:32 PM
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Do what andy did and M70 the sucker. No but SBC can stay in Chevys find a M60
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Old 11-28-2012, 05:05 PM
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Originally Posted by Josh429er View Post
Do what andy did and M70 the sucker. No but SBC can stay in Chevys find a M60
I actually found a m70 on Craigslist with all the parts I could want except auto transmission. How hard is it?
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  #5  
Old 11-28-2012, 05:08 PM
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  #6  
Old 11-28-2012, 05:09 PM
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  #7  
Old 11-29-2012, 01:24 AM
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Quote:
Originally Posted by hh3uunp View Post
I have found a great deal on a 525iT that has a bad motor. It overheated and blew headgasket and lifters. It also as an automatic tranny. I'm not a big fan of the m50 anyways its weak and not good on gas. The car is in great shape, straight, interior is great.

Questions
1. Do 6 cylinder and v8 models have different steering rack? (I have an e39 and know v8s and 6 cylinder may not be a direct swap)
2. I have found some m62 non vanos and 6 speed on craigslist how hard is that swap? Anyone do it before(link)
3. I was thinking about a small block chevy swap is that a feasible option for a 2k budget?
4. How much does a m50 run these days? I would have to turbo it though.
1/ If you want a V8 wagon, buy a V8 wagon. not worth swapping a V8 into it really with 540iT going for only a few k more than 525iT. steering box, braking system the works is all different. about the only thing in the engine bay that doesnt change is the front subframe. I initially looked at doing the V8 swap on my wagon, but decided for all that work to end up with something I could buy anyway wasnt worth while.
2/ I dont think M62 came in non-vanos but i could be wrong
3/ Not on bimmersport you won't
4/ very cheap. turbo manifolds are where the cost will start to kick in.

why not do an S50/S52? the E30 guys pick them up cheap as so you should be able to as well. just remember, you dont get the ITB version we get here in non-USA-ville

Quote:
Originally Posted by hh3uunp View Post
I actually found a m70 on Craigslist with all the parts I could want except auto transmission. How hard is it?
certianly not a first or second swap, and even then no way i could have done it alone, and ive done swaps before
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Last edited by _Ethrty-Andy_; 11-29-2012 at 01:26 AM.
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  #8  
Old 11-29-2012, 10:28 AM
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Quote:
Originally Posted by hh3uunp View Post
I'm not a big fan of the m50 anyways its weak and not good on gas.
I should have you stoned for this.



A factory I6 car would need an I6 motor and a factory V8 car would need a V8 motor. The placement of accessories and welded brackets and all that othe stuff is different and would make the swap extremely complex requiring fabrication. Dont even get started on the M70. Its as easy to put an E34 shell and interior on an E32 as it is to put the M70 into an E34.

Fix the M50 as it's the best Motor BMW has made in a long time.
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Last edited by Monsignor; 11-29-2012 at 01:36 PM.
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  #9  
Old 11-29-2012, 10:40 AM
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Quote:
Originally Posted by 95 E34 View Post
I should have you stoned for this.



A facotr I6 car would an I6 motor and a factory V8 car would get a V8 motor. the placement of accessories and welded brackets and all that othe stuff is different.

Fix the M50 as it's the best Motor BMW has made in a long time.
Really 4/5 m50s blow a head gasket I think they might be designed to do so. The best engine made by BMW is the m30. M30 is a tank. Anyways I found a donor m54b30 so I can make the m50 into a s50 (USA) plus I'm going to put an extra thick head gasket to lower the compression so I can get more power out of it after I turbo it. BMW screwed every m3 in the USA with a m50 slightly upgraded motor.
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  #10  
Old 11-29-2012, 11:07 AM
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Quote:
Originally Posted by hh3uunp View Post
Really 4/5 m50s blow a head gasket I think they might be designed to do so. The best engine made by BMW is the m30. M30 is a tank. Anyways I found a donor m54b30 so I can make the m50 into a s50 (USA) plus I'm going to put an extra thick head gasket to lower the compression so I can get more power out of it after I turbo it. BMW screwed every m3 in the USA with a m50 slightly upgraded motor.
Mine has 250K miles and still runs strong. BMW definitely never designed anything to blow anything, you must be from a GM crowd. I'd love to see your supporting evidence of 4/5 M50s blowing HGs. As far as i'm concerned, every motor will eventually wear through its HG, BMWs just do it later.

You want to talk about poor fuel consumption? well you hit the nail on the head with the M30. Sure more displacement and power but its in the stone age comparitively. Id rather have an M20 and get the efficiency. heres a tip, for both power and efficiency DOHC>SOHC

and its an M52 that swaps into the M50 block and thats just for stroke. you want an S50? better pony up for the cams and the turner tune.

Stick to your E39 V8 pole riding. Around here we dont like to bash our own.
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Last edited by Monsignor; 11-29-2012 at 11:16 AM.
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  #11  
Old 11-29-2012, 12:13 PM
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Quote:
Originally Posted by 95 E34 View Post
Mine has 250K miles and still runs strong. BMW definitely never designed anything to blow anything, you must be from a GM crowd. I'd love to see your supporting evidence of 4/5 M50s blowing HGs. As far as i'm concerned, every motor will eventually wear through its HG, BMWs just do it later.

You want to talk about poor fuel consumption? well you hit the nail on the head with the M30. Sure more displacement and power but its in the stone age comparitively. Id rather have an M20 and get the efficiency. heres a tip, for both power and efficiency DOHC>SOHC

and its an M52 that swaps into the M50 block and thats just for stroke. you want an S50? better pony up for the cams and the turner tune.

Stick to your E39 V8 pole riding. Around here we dont like to bash our own.
I know m30 is stone aged but it was voted best motor made in the 1900s I think that is a pretty good achievement.

No it can use m54 pistons/cams to create a s50. I always wanted to take an engine apart. I'm power hungry addicted to power

Are you bashing me? I don't want to bash anyone.
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Last edited by hh3uunp; 11-29-2012 at 12:15 PM.
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  #12  
Old 11-29-2012, 12:47 PM
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S50 cam specs - Intake/exhaust
Duration 252 / 240
Lift 10.2 / 9.7

M54 cam specs -Intake/exhaust
Duration 240 / 228
Lift 9.7 / 9

Enjoy your "S50"

BTW: M54 top-end parts need trimming and modification for the M50 recipient. wanna borrow my dremel?
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  #13  
Old 11-29-2012, 12:52 PM
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M54B30 2,979 cc (182 cu in) 170 kW (228 hp) @ 5900 rpm 300 Nm (221 lbft) @ 3500 6500 2000 89.6 mm (3.53 in) 84 mm (3.3 in) 10.2:1

The 2,494 cc (152 cu in) M50B25 was introduced with the 1990 525i/525ix . It has an 84 mm (3.3 in) bore and 75 mm (3.0 in) stroke and produces 141 kW (192 PS; 189 hp) at 5900 rpm and 245 Nm (181 lbft) at 4700 rpm.

M50 stroked.
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  #14  
Old 11-29-2012, 12:54 PM
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e S50B30 is a 2,990 cc (182 cu in) higher output version of the M50 which powered the E36 M3 (except in North America). It produces 210 kW (282 hp), has a bore of 86 mm (3 in) and a stroke of 86 millimetres (3.4 in).[7] The limited edition "M3 GT" model from 1995 had different tune and produced 216 kW (294 PS; 290 hp)
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  #15  
Old 11-29-2012, 01:06 PM
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Thats great, ctrl+C, ctrl+V, ctrl+C, ctrl+V...



Quote:
Originally Posted by hh3uunp View Post
No it can use m54 pistons/cams to create a s50. I
back this up
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Old 11-29-2012, 01:15 PM
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  #17  
Old 11-29-2012, 01:26 PM
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Quote:
Originally Posted by hh3uunp View Post
No it can use m54 pistons/cams to create a s50.
From you're link:
Quote:
Originally Posted by HakenTT View Post
Now you can decide on what camshafts you want to use, if you want to have the same power curve as S50 engine then just get some S50/S52 camshafts for your build.

Strike 1.

M54B30 cams into M52 head

S50 Camshafts

Turner Chip for M3 cammed M50


















But hey the M50 is just a weak gas guzzler, huh?
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  #18  
Old 11-29-2012, 03:14 PM
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Quote:
Originally Posted by 95 E34 View Post
From you're link:


Strike 1.

M54B30 cams into M52 head

S50 Camshafts

Turner Chip for M3 cammed M50


















But hey the M50 is just a weak gas guzzler, huh?
Turbo turbo
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Old 11-29-2012, 09:28 PM
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I would buy the V10 engine and find a car for it.Those are reliable powerful engines .
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  #20  
Old 11-29-2012, 09:49 PM
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Quote:
Originally Posted by 95 E34 View Post
I should have you stoned for this.



A factory I6 car would need an I6 motor and a factory V8 car would need a V8 motor. The placement of accessories and welded brackets and all that othe stuff is different and would make the swap extremely complex requiring fabrication. Dont even get started on the M70. Its as easy to put an E34 shell and interior on an E32 as it is to put the M70 into an E34.

Fix the M50 as it's the best Motor BMW has made in a long time.
Not going to get involved in a fight, but the M50 is not the best engine they have built. sure its a good engine, but weak in terms of strength, and the cooling system id almost go as far to say it was an afterthought. The non-Vanos isnt too bad. If you want a bullet proof engine, the only BMW one that comes to mind is an M30, though the M10 is pretty good too, though because it puts out very low power its not really high on the priority list. as for new engines, the M47 is a fantastic engine, One would assume the N47 is better still with them overcoming cooling issues, but at least the M47 cooling system is designed where possible to excessively cool rather than overheat when parts fail.

I wouldnt mind doing an M47 conversion to my 316i one day
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  #21  
Old 11-30-2012, 02:08 AM
Josh429er Josh429er is offline
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I believe that BMW holds the most wards best engine awards out of any manufacturer. So to say that the M30 has done more than any other engine is.a stretch. I agree with 95 E34, if i were swapping why wouldn't you go to twin cams and VANOS?

Personal opinion and nothing more. Boosting these motors is retarded. Unless you really like it...***** a fudging N54 lol you'll probably spend the same money, Atleast one isn't gonna have your heart sink when you try to start it and it ejects a turbo. Or else go the displacement route. You want power you hafta go get it because it isnt in this car.

I severely doubt you will have anyone even consider a post you put up if the swapped motor isn't a BMW motor. Either way Goodluck.
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  #22  
Old 11-30-2012, 10:18 AM
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To each their own then. I'll stick to my M50TUs.

OP was asking for options as far as an engine swap. M/S50, M20, M30, M/S52, S38 is the answer. Everything else will need a lot more fabbing.

This thread has turned into apparently an M50 build thread.
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Old 11-30-2012, 01:24 PM
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The BMW M30 (early models are sometimes referred to as "M06") is a straight-6 SOHC piston engine which was used over a 28 year lifespan over many BMW models. Ward's have rated the M30 as one of the "Top Engines of the 20th Century".[1]
It has been given the nicknames of 'Big Six' and 'Senior Six', following the introduction of the smaller BMW M20 straight-6 in the late 1970s.

M30 was used from 1970-1994. It is old technology but doesn't mean its a bad engine. The the m50 was used what from 90-96, why would bmw replace it so quickly then replace that quickly again. Because it wasn't enough power mixed with bad gas mileage plus mechanical break down. My dad e60 has the n54 that is a good engine 150,000 miles nothing is wrong with it yet. The m54 that was in my 525i was a good motor if you take care of bmw engines in general they will last a long time. It just seems like everytime I look at craigslist I see 1000s of m50s with blown headgasket and a bunch of m30s still running
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  #24  
Old 11-30-2012, 02:40 PM
Josh429er Josh429er is offline
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My M30 has a bad headgasket, Radian recently did a headgasket on his. I think snowsled did one too...It's just your perception.
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Old 11-30-2012, 02:49 PM
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My M30 has a bad headgasket, Radian recently did a headgasket on his. I think snowsled did one too...It's just your perception.
Ok let's agree on this all BMWs straight 6 engines are great.
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