s50 or s52 ?

[ericzz]

I have searched and read and my eyes are crossed !

1989 M3 stock 410 lsd

I can buy a complete s50 obd1 for about 3500 with trans
I can buy an s52 same deal for about 4k with trans
then convert to OBD1
I think from what I have read this rear is not going to work so well .
what is the hp rating from engine to engine

The s50 seems like it will be a much easier swap since it' ready to install .

I use e36 rubber mounts and e28 535 metal brackets ?
Trans mount OEM but from what car ?
Many boostyers to choice this I can handle on my own .
Exhaust is custom
wiring I think I have figured out
ews disable chip is pro date is above 10/94?

Not looking to race the car just update the driveline the s14 is nice but not as quick as I like .

Thanks again I have searched and book marked a ton of sites these fianl opions/ answers will help alot !

[PiercedE30]

S52 converted to OBD1.

[redhatpat]

S52 converted to OBD1.

Yep. It's a no brainer if you can afford it. 240 hp* vs. 333 hp*? Easy choice, and your cost for the S52 engine isnt much more.


*These numbers pulled from the cobweb recesses of my brain, could very well be wrong.

[Adrian_Visser]

no 333hp is the bhp of the s54

the s52 in obd2 spec mkes the sme 240hp the s50 does. with the m/s50 intke, obd1 conversion you get like 20hp or something more from the s52

your new to the forum so its ok but use the serch tool theres more on this thn youll ever need to know in the site

[asubimmer]

I am using the e28 IE urethane motor mounts. urethane > rubber

[matt]

I use e36 rubber mounts and e28 535 metal brackets ?

You have that backwards.

You've caught a bunch of buzzwords, but I don't think you've really got the whole thing figured out just yet.

The S52 is a better motor. OBDI swapping is not hard. It takes an hour, if you're prepared and can solder.

Yep. It's a no brainer if you can afford it. 240 hp* vs. 333 hp*? Easy choice, and your cost for the S52 engine isnt much more.


*These numbers pulled from the cobweb recesses of my brain, could very well be wrong.

Yeah, they're both 240hp stock. The S52 will pick up a lot more HP with the right software though (I sell such software)

[surebimmer]

How much money do you have/want to spend. The S50 swap would be cheaper.

[golde30]

How much money do you have/want to spend. The S50 swap would be cheaper.

kinda sorta sometimes. lol:roll:

[ericzz]

Money is not the issue it's how much brain damage I want to encounter . seems the s50 is very simple and the s52 will tax my brain a bit more . Will the fun factor be that much better from one to the other ?

[matt]

LOL. Neither of them are simple. The S52 is not much harder and requires about 3 extra parts.

[FredK]

The S50US is more fun for <10/95 engines. You never know when a valve will drop, when a keeper pulls through the spring top plate. :mrgreen:

[SchnellerVert]

S52 are alot more common so....due the math. S50 was a limited amount of time so honestly S52 would be the wise choice. Newer and less mileage.

[ericzz]

Ok just order an s52 with trans and bought an e34 parts car for obd1 and pan . I want to order a master and booster Rock Auto ix booster and e34 m5 master ? please confirm .thanks Think I will grab the ebay headers as well .

injectors what part # and ho w has them
maf ?
and do I just order a 1995 m3 non ews chip for my e34 vanos non ews dme ?

Sorry for the ?'s

[FredK]

Ok just order an s52 with trans and bought an e34 parts car for obd1 and pan . I want to order a master and booster Rock Auto ix booster and e34 m5 master ?

Yes.

injectors what part # and ho w has them
maf ?

OBD-I HFM and many people run stock S52 21.5 lb/hr injectors (pink top). You can run 24 lb/hr blue top injectors with a 3.5" 540 HFM.

and do I just order a 1995 m3 non ews chip for my e34 vanos non ews dme ?

Yes.

Sorry for the ?'s

Repent. For the Search Nazi will visit you tonight. Kind of like the Tooth Fairy, except he'll punch your teeth out then leave 25 cents a tooth.

[matt]

OBD-I HFM and many people run stock S52 21.5 lb/hr injectors (pink top). You can run 24 lb/hr blue top injectors with a 3.5" 540 HFM.

Either way you'll need a chip tuned for that combo.

I have them better and cheaper than anyone else. Seriously.

Repent. For the Search Nazi will visit you tonight. Kind of like the Tooth Fairy, except he'll punch your teeth out then leave 25 cents a tooth.

Wait, is that me?