Junkyard s52 help

[wuboring]

Pete here..long time lurker first time poster.

I have a e30 im preping for a turbo s52 swap. I got a junkyard s52 for $1200. The comp. Was 187the psi +/- 2 psi on all cylinders. Got it home popped off the valve cover and the first thing i notice is the cams say Shrick on them. Im a bmw noob but im familiar with the cost of these. The numbers on them are 1718888 and 261a5800 on the exhaust and 1738369 and 261E5807 on the intake. Does anyone have any info on these. Also the oil pump nut is already welded on. Im guessing this motor was ran pretty hard..what all should I be checking over and replacing as preventive maintenance.


Thanks

[Robert]

Just run it till it blows up. then build it. pretty hard to blow these motors up.

Nice find tho.

[brenE30]

that is a nice find for a great price. just run it

[wuboring]

Thanks guys. I notice a tiny bit of burnt oil on the vavle stems in the exhaust ports..also i purchased it with no intake or harness but it has knock,cam,crank sensors ect..im wondering if it was converted to obd1 in a former life. Any quick way to tell without cross refrencing part numbers?

[frankie591]

if the knock sensors have individual connectors they are obd1. If the sensors share the same connector it is obd2.

[Roysneon]

Just check for signs of worn crank and rod bearings. Seems like an awesome score, good job.

[etxxz]

Try to go back and get that ECU. 9/10 says its got atleast a shark injector (if obd2) or a chip/tune if obd1 - the type of ecu alone would tell you what OBD you have.

why was the car in the junkyard - damage wise.
You never know what you got with this engine. Could be a fresh build. Could have upgrades. Could be a shit build too. $1200 is an excellent buy regardless. Run her till it blows. It took me 3years of street drift and track time to do exactly that to a 160+kmi s52. After the DIY rebuild, it went after less than a year of track because i did a shit build. Learned quite a bit from that that's for sure..

good luck and keep us posted :o

[ACHTUNG]

Nice score!

[Cha Ching]

Great find!

The oil pump nut is usually tacked-on to keep it from working itself loose and wrecking havoc on the motor. Some guys use wire-ties to keep the nut on. This and your cams is a good sign that this motor was taken apart at some point by an enthusiast. Compression points to good working condition as well.

[wuboring]

Thanks for the tips guys. Im gettinf back to working on this and trying to identify if its obd1 or obd2. Frankie recommended looking at the knock sensors but they have been removed before i got the engine. There is however a crank sensor in the front of the motor. Would this indicate obd1 sensors swapped in other locations eg cam position ect. Thanks

[SwiftE30]

Check the ECU, red label 413 etc. and the crank sensor should be a male connector for obd1 IIRC. Not at my car so I can't check. If you found it in an e36 I'm thinking it would still be obd2.

Great find though. Sounds like a great start for a turbo s52. I'm also in the process of turboing my e30 s52. GL!

[gazellebeigem3]

Crank sensor in the front sounds like someone was running obd1 on it. Otherwise an s52 uses the sensor in the block that reads a ring on the crankshaft, not the toothed wheel in the front.

If you can snap a few pics I'm sure people could tell you with certainty very quickly.

[wuboring]

Unfortunately I dont have or have access to the ecu. The sensor on the front has 3 pins and they are male. It has 013006B stamped on the sensor itself. The cam position sensor also has 3 pins but is female. It has AO 47 on its plug

[Mr.SWISS]

Crank sensor in the front sounds like someone was running obd1 on it. Otherwise an s52 uses the sensor in the block that reads a ring on the crankshaft, not the toothed wheel in the front.

If you can snap a few pics I'm sure people could tell you with certainty very quickly.

This

[wuboring]

Here is a picture of the crank sensor. somehow my phone was accidentally set to black and white. anyhow i can take a photo some something exact if that would help