Help ID this piston, block, and head gasket

[smutts]

 ;DBetter budget for some new tappets judging by those kisses on the pistons, did it stop when the cam cap studs pulled out?
This bodger is amazed at the vastness of the optimism vs technical ability ratio shown by this thing. Maybe it was done for a bet? 

[smutts]

UhOh! Have I just killed the thread, or am I in a weird time zone?

[Turbinepowered]

UhOh! Have I just killed the thread, or am I in a weird time zone?

Thread murderer! 

[87octane]

Finally it's official. It's a 1.8T gas block, rods and pistons, either a PL or PF. It threw me, having a vacuum pump and all. Thanks to Zulfiqar for the 1.5 SAE white paper to understand the radical changes to the diesel piston and ring grooves. Explains nicely why the gas pistons/rings fail so quickly. Also explains why the anonymous engine builder was scared ***less of any boost on this particular engine. So now I need a complete TD bottom end and other misc to put it back on the road. Chasing leads... AAZ stuff is rather scarce and rather spendy on ebay this week. I'm leaning towards cutting up a 1Z intake for my AAZ head/T3 combo. Might shove a Suzuki intercooler in the middle for grins. It's off to the wrecking yards to see what awaits my attention...

[Rabbit on Roids]

its not a 1.8t they never made a 16v 1.8t. its a scirocco engine. a later one. 1.8 16v. the 20v 1.8t engines had even different pistons. and a diesel head wont come close to fitting on a 20v block. that engine is a PL, bet my left nut on it.

[Turbinepowered]

its not a 1.8t they never made a 16v 1.8t. its a scirocco engine. a later one. 1.8 16v. the 20v 1.8t engines had even different pistons. and a diesel head wont come close to fitting on a 20v block. that engine is a PL, bet my left nut on it.

We'll remember this is if that engine turns out to be more of a mutt than we know, and some weird combination that looks like a PL but isn't a PL block.

[MJF]

Second vote for PL. Pistons are not 8 valve gasser nor 20 valve (1,8T) gasser. And block is not 20v.

[idgtd]

Yeah, I think the 1.8t blocks have 3 oil drains across the back. I vote PL.

[Rabbit on Roids]

and this engine actually ran for a short time?

[Powered by Spearco]

I think you can just make out the CCV breather behind the injector pump. Looks just like the ones used on the PL blocks.
The head gasket looks to be 1.9 AAZ cause its metal.

[Rabbit on Roids]

has anyone noticed the breather block off cover? pretty sure its specific to Audi 3A blocks that were swapped into other rides. may be wrong, but i know that is a gas engine specific piece. 3A's had distributors too. hence why it had a vac pump. but whatever tweeker built this engine must have been one hit away from an overdose the entire time he was building this engine to get soo many mixed up and mis matched parts on one engine. this thing is worse than a frankenstein conglomeration.

[87octane]

So I'll buy the PL concensus. The next juicy tidbit from the builder is "how to get 16v pistons (on 16v rods) to stick out of the block far enough to get some compression". Answer: aftermarket gas +1 mm stroker crank from Germany. I guess that makes the stroke 87.4 and the displacement slightly over 1.8.

The PO(#1) claims he paid for the "rebuilt diesel engine" and drove it 8000 miles over one year, no problems other than a worn out injector. He added a grease car conversion during the 8000. He sold it to PO#2, supposedly perfect, with grease system disconnected. PO#2 drove 800 miles from Denver to WY over the continental divide 8000 ft pass, probably deep into boost the whole climb, and landed at home with another bum injector. PO#2 knew nothing about diesels or engine building or turbo boost or EGT or french fry oil, he just wanted a 4x4 for his ranch. (It's a suzuki sidekick 4 door with 5.13 gears, 5 spd, etc).

I drove it 300 miles from Jackson Hole to SLC, initially it was slow, smooth, bad turbo lag, but would spool up to 10-11 if you stuffed it to the floor and left it there long enough. Took 3 psi just to sustain 60 mph (5.13's in the diffs).
But it just kept getting worse and worse, and eventually couldn't idle, no power. Confirmed bad injector in the #2 hole and really lousy compression results (dry/wet)  1  250/350 2 140/150 3 250/350 4 250/350.

I don't think PO#1 had any idea about the internals, and I don't think PO#2 had any idea about anything except that he might suspect that he cooked it coming over the pass. I'm sure the rings were weak when I started. I knew the injector was bad but the nearest replacements were in SLC so I just drove it till it died.

[smutts]

Answer: aftermarket gas +1 mm stroker crank from Germany.

  Yup, that must be the simplest way round!

[catlin_cava]

They Need an Award.... MORON MECHANIC OF THE YEAR AWARD 

[smutts]

 ;DThis needs a bump!

Just so the world can admire the skill and craftsmanship!