S2 Engine Project

[stitch2k1]

So, if some of you remember I had a 951 motor, turns out it was even a Turbo S motor, and I sold it. A kid in Ohio wanted it, and we worked out a pretty good deal that worked well for both of us. On my way home from meeting in Georgia (at the 944Barn no-less) I picked up a S2 motor.

This motor has a colorful history, if anyone on FB recalls there was an S2 in Arkansas that popped up for sale. This is the motor out of that car. It suffered a timing belt failure at startup, has lightly damaged piston #1, and faintly damaged #2. The shop in Arkansas that """attempted""" (strong air quotes) to fix it only ended up destroying the cylinder head, and thankfully not messing up the bottom end even more. They tore the entire head apart, replaced valves, replace the intake cam with an S1 cam (for some reason??), and indexed it wrong, and for good measure completely mixed up the line bored main caps for the cams. The (S1) intake cam snapped, and luckily didn't damage the bottom end any further. I got a different head with it, so the "bad juju" is gone.

The bores however are absolutely spotless, cleanest I've seen. The weird part is because it sat in Arkansas for so long (it took like 2 or 3 years to get """fixed""" so it corroded the tops of the pistons. Considering the bores I'm just gonna leave it and see what happens. So the bottom end will stay intact aside from new rod bearings. Thrust bearing checked out. So current plan is ACL rod bearings, it already has ARP head studs, and a general reseal of everything. It came with a LOT of the stuff I need, so that's pretty good, even got a nice lightly used Sachs clutch kit with it. It pays to be friends with people.

Some pics of it now.



Just going to be posting my progress with this. I have a car in mind to put this in...but that's for later.
As for this week I've so far just gotten it out of my car and onto a stand, and I'm working on cleaning it. Pressured washed it today and got a lot of the bulk dirt off, and removed a bunch of stuff including the water pump (new, but it's Uro so instant dumpster).
This weekend is hopefully getting everything organized and cleaning parts off. Just trying to slowly work on it in between working on client's cars, which have currently taken over my driveway.

[jsheiry]

That wagon is sure paying for itself....better get a really nice full length rubber mat for all the hauling needs.

Good luck with the S2 motor project. I may have a 968 intake/throttle body from a part out motor if you go in that direction. I do not know the ins and outs of this mod but have sold a few to guys with S2 motors.

[stitch2k1]

That wagon is sure paying for itself....better get a really nice full length rubber mat for all the hauling needs.

I had a pretty good solution. I have a homemade cargo mat off another car, I then put a moving blanket down, and then finally a drip pan. Strapped the motor down with ratchets and used the D-rings in the back. Worked really good. Survived 1300 miles of driving that weekend. I just picked up an 01 525iT, factory 5MT too, to fix up. It has a gray factory cargo mat in the back I might keep. Not sure yet. I need to look at possibly rebuilding a motor for it.

Good luck with the S2 motor project. I may have a 968 intake/throttle body from a part out motor if you go in that direction. I do not know the ins and outs of this mod but have sold a few to guys with S2 motors.

Thanks, I'll keep that in mind. Leaving it stock for right now. Eventually a 968 throttle body at the least would be good (I think those bolt up?) for the variable TPS, eventually I'll Megasquirt it. For now, I plan to grab an RS Barn chip (he still has them apparently), which I can transplant to my 91 S2 after I standalone this motor/car it goes in.