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M50/S50 in fc3s

Old 11-26-09, 12:09 PM
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M50/S50 in fc3s

*Please keep the flaming to a minimum* - I say minimum because if you have a solid argument about why it is a bad idea then I want to hear it, just not any of that stay rotary bs or talk about price comparison.

I just wanted to see if anyone on here had any Bimmer knowledge. I have been playing around with the idea of swapping a e36 6 cyl. into a fc3s. Either a m50 or s50, I want to stay obd-1 to make the wiring easier.

I know they are heavier than I would like but I was wanting to know if anyone had any idea if the motors oil pan would clear the subframe.

Any info would be great, not sure if it has been done before.

Thanks
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Old 11-26-09, 01:48 PM
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i don't know why anyone would think to replace one money pit engine with another. just buy a beemer!
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Old 11-26-09, 06:03 PM
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How about you tell us why YOU think this a GOOD idea instead... you are talking about throwing in an engine that is:

-heavy
-expensive
-aftermarket support is minor in comparison to other choices
-have to fab up everything yourself as no kits exist
-no power increases over most other swap options

.... so why is this a good idea?
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Old 11-26-09, 07:46 PM
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A) I already have the motor so I wouldn't have to pay for one.
B) The aftermarket support isnt the best but the s50 parts bin for upgrades is cheap and well worth it.
C) I am not building it to be the fastest
D) I have owned many m series motors and they have been nothing but reliable
E) I know how to work on them better than other motors
F) I haven't seen it done before

and with a built head (the money I would have spent on a different engine) it will rev to 9500 and make more power than the 13b-t + I like the oil set up on them, that's why I asked about the oil pan because If I have to fab one up then I wouldn't be going this route

Thanks guys.


... oh and yeah I already got the bmw. Go figure
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Old 11-27-09, 01:26 AM
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Ok bro.. I have a 06 BMW 325ci before that I had a 325 from
87.. The e30 chassis... If u really need to say enjoy the rx7
with that motor it's gonna be a long and difficult project...
Were talking custom exhaust$$$ custom drivetrain$$$ then
as u said it wiring the motor.. Now that's fair inexpensive..
But instead of blowin a large load on the car put it into something
that will pay u back!.. I love my rx7's there fast and they look
great.. But it's not the only way I roll.. Aparently u dnt either..
I got the 06 325 ci to pull ho's.. It's monoco blue with hid's
and led tails.. Completely stock... But it pulls.. H o e s of course.
I'm just givin u my two cents.. Not enough money really falls
from the trees.. Keep it and put it into something that's more
productive homeboy!!
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Old 11-29-09, 03:17 PM
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if you have the motor just fab up a oil pan and the mounts for the engine and trans and custom driveshaft exhaust is in the same side of the rx7 so exhaust will be cheap, dont listen to theses dumb monkeys. if you do it ,,do a thread for i can see your project swap.
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Old 12-01-09, 02:23 PM
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hmmm, with the motor length, and angle. Well with the right work, just about anything is possible. Just got to weigh the cost and fun meeter. Is it going to be fun to drive to be worth the cost of the build.
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Old 12-05-09, 02:11 AM
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Originally Posted by DrftKingIII View Post
A) I already have the motor so I wouldn't have to pay for one.
B) The aftermarket support isnt the best but the s50 parts bin for upgrades is cheap and well worth it.
C) I am not building it to be the fastest
D) I have owned many m series motors and they have been nothing but reliable
E) I know how to work on them better than other motors
F) I haven't seen it done before

and with a built head (the money I would have spent on a different engine) it will rev to 9500 and make more power than the 13b-t + I like the oil set up on them, that's why I asked about the oil pan because If I have to fab one up then I wouldn't be going this route

Thanks guys.

... oh and yeah I already got the bmw. Go figure


my fc has an inline 6 as well but from the toyota family, love bimmers though. I know to swap a 1J in to an FC it has to be a rear sump oil pan to clear the subframe, what kind of pan does your e36 motor have? i say you should go for this swap if you have the ability to fabricate the various mounts & wire up the engine harness, that's a good amount of the swap work right there.

and the thought of a 9500rpm redline... makes me want a group A 4AG

Last edited by fstbckgt; 12-05-09 at 02:13 AM.
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Old 12-05-09, 03:51 PM
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Eh, lots of work for a low output engine. It takes a lot of money to make good power out of those engines, computer control and tuning is an issue, it's heavy, it doesn't fit well, and it will require major custom fabrication.

Anything is possible, but this is a long walk to get to your destination, especially when a warmed over 13BT is likely to make more power with less weight and money invested.

I have a bit of experience with these swaps, and an E36 in the driveway, FWIW.
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Old 12-08-09, 06:01 PM
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i saw one of these motors on a pallet the other day and from memory i'd say the oil pan is completely wrong to fit in the FC chassis. BMW put the sump in the front, mazda put the steering rack and crossmember in the front. possible to flip the pan backwards?

IMO its a ton of work for a heavy engine that doesn't out power or out reliable the rotary, the engine i saw was the 2nd backup motor for the guys pitted next to us. the first motor died before we even got to qualifying.
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Old 12-16-09, 12:48 AM
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Be the first LS9 FD on the steet! Then do the lingenfelter stage 2 on it and make 800whp
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