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E36 M3 (1995-1999)

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  #1  
Old 07-03-2014, 05:23 AM
BryGuy11 BryGuy11 is offline
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Location: New Hampshire
 
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Mein Auto: 1995 M3
95 M3 motor replaced with S52, questions

Hi All,
I have a 95 M3 with 113,000 miles and blew the engine. I'm getting a 3.2 M3 engine to replace and of course going to use the S50 manifold and anything else that was better off the original engine, I believe the OBD I can be used ? my question is will it be a little off the mark without the 3.23 rear gears standard in the 96-98's ? I believe I have 3.11's. Also any comments on what to use and what not to would be very helpful !
Thanks in advance ! Bryan
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  #2  
Old 07-03-2014, 05:50 PM
BryGuy11 BryGuy11 is offline
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Location: New Hampshire
 
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Mein Auto: 1995 M3
Thumbs down Great website !!!

Anyone alive on here !!!
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  #3  
Old 07-04-2014, 06:44 AM
7pilot 7pilot is offline
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Location: i dunno
 
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Mein Auto: 90 Ford Tempo
1, grab the water temp gauge sender and retap it to 12mmx 1.5 pitch(iirc)
Then you can install it into the TB heater circuit (deleting that function) or locate a Tee fitting and add it to the circuit (may not need to be retapped).
2, swap the manifold and its gubbins over.
3, adapt the CCV system to the port on the S52 Cam cover or use the S50 Cam cover on the S52.
4, swap the Coolant Temp Sensor from the S50 to the S52.
5, Swap the crank position sensor from the s50 on to the nose of the S52. Leave the S52 crank sensor in place as a plug(do not use with OBD1)
It would be nice if you could use the S52 exhaust headers (more power).
Cam position sensors are inter changable.

m
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  #4  
Old 07-04-2014, 08:58 AM
BryGuy11 BryGuy11 is offline
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Location: New Hampshire
 
Join Date: Mar 2014
Posts: 11
Mein Auto: 1995 M3
Thank you !

Thank you for the response...any idea how my 3.15 or 3.11 (not positive which gears exactly in 95 stick) will perform with the S52 engine v.s the 3.28 gears standard in 96-98's with stick ? Also are the headers that much different ?
Again, thank you in advance !
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  #5  
Old 07-05-2014, 07:27 AM
7pilot 7pilot is offline
Git
Location: i dunno
 
Join Date: Feb 2011
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Mein Auto: 90 Ford Tempo
There is a little more shove on launch from the 3.23 diff but the taller diff gearing will shorten the rev band in first and second versus the 3.15 .
The gearbox should be the same if your car has the ZF320 .
The 3.15 will be a smoother drive on the street, although there's not much difference apparent until you really get to know the car.
The S52 exh manifold may be worth around 10 hp minimum.
The OBD 1 intake is worth 10 hp minimum but the real gain is that the engine does not flatten noticeably as it would with the S52 OBD2 intake once the rpms are rising past 5k rpm


m
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  #6  
Old 07-07-2014, 08:52 AM
bmw-mania bmw-mania is offline
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lemmiegethistraight..

You blew your S50, and your replacing it with a S52?
Your diff, is not going to be a issue regarding the motor swap. 3.15, 3.23, etc..

Your going to have to convert the OBD2 engine to OBD1.. as pointed out above ^
like, swapping the Hall type sensors for the VR type sensors (or vice versa)

Do lots of searching, and reading on it.
The information is plentiful, and it is here, just search the forum.


Cheers!



ps- what are you doing with your *blown* S50?
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  #7  
Old 07-07-2014, 09:03 AM
BryGuy11 BryGuy11 is offline
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Location: New Hampshire
 
Join Date: Mar 2014
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Mein Auto: 1995 M3
Question Sadly, yes

Money shift, and dropped at least 1 valve into cylinder...don't know if I'm going to use it as an anchor for mother in law or large paperweight. How will the S52 run with all of the OBDI bolt ins and the 95 stock rear gears ?
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  #8  
Old 07-17-2014, 12:39 PM
bmw-mania bmw-mania is offline
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Properly swapped over, it will run as it should..

If you do tasteful upgrades while you're in there.. you should be pleased.
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  #9  
Old 07-18-2014, 05:39 PM
williamm3 williamm3 is offline
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Location: San Jose, CA
 
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Mein Auto: 1995 M3 Lightweight
This may help:

http://forums.bimmerforums.com/forum...1#post22847281
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