Turbo D16

Welp, looks like im joining the list of unfortunate y8 owners who have the "curse".

Tonight after turning onto a 35mph street with my friend in the lane next to me, I see a set of bluish hids flying up behind us at more than twice our speed. To avoid the crash I braked hard and he just missed both of us swerving between.

I was absolutely livid so as he pulled into the turn lane at lockwood ridge (ive included a map with route of the chase) I went ballistic just as the light turned green and he laughed and sped off through the turn..so it was on.

http://bit.ly/45XXjb

He led a high speed chase (I was driving sanely and safely behind, I just wanted his plate number) That went on for a few miles. The guy was in a mercedes, and that greasy haired little fuck could not shake me to save his life. Even with worn azenis you cant shake a guy who knows what the hell is up when it comes to technical driving. Im almost certain he was shitting his pants.

Anyway..to finish the story the guy darted into a friendlys parking lot and if id have known there was only one way out thatd have been it..but I followed in a circle till he popped out and ran through a close yellow that I wasnt willing to run while red... and he got away, the friends that I had left way back at the beginning saw him too and didnt even think about it..grrrrrrr Fucking assbags.

So just as I mad the corner into the friendlys I started hearign a high speed click..and common sense told me exactly what it was.

The car idles fine and makes no noise, but if I blip the throttle to 3.5k or higher there is a distinct hammering noise that I know now is not a pully or anything hitting. Also when under loads on the road at mid rpm its loud, and at very light transitioning throttle I cant hear it.

Just trying to get a 100% from you guys before I tear the bottom end of my NA!!!! y8 apart tomorrow

How in the hell did I pull that off without a turbo? No idea..

I am proud that the merc had no chance of losing my ass though

That's some shitty karma. You lead the fight for justice and you end up getting your motor broke. That sucks man, the only thing I would say before to start tearing it apart is to check valve clearance. Its not likely after your description but just maybe you'll get lucky. Best of luck!

so you didn't get the plate?

sounds like rod knock to me.

id take off the oil pan and check the rods big end for play. it should be obvious if there is a problem.

Yeah I plan to do it tomorrow when its light out.

And no, I never did get his plate, im really pissed about that. I was honestly waiting for him to eat shit, and I hung back about 100 yrds so I could anticipate the turns and his choices. He tried to fake me out, badly, a couple times and almost hit at least 3 cars in doing so. I was hoping hed get stuck in traffic, or at a light.. he kept getting lucky and catching lights just as they turned or just before they went red...to which I eeked past the wall of cars on two different yield sweepers.

I was shaking mad for a good 2 hours, and now that I think about it..if he'd have stopped in the parking lot I probably would have dragged his ass across the asphalt like a ragdoll until the cops came and arrested me.

The engine sounds exactly like the B7 that was in my hatch before the y8, I drove it like that for several months not knowing it was a rod knock. It would only do it at high rpm, mid range acceleration and also high speed on the interstate (75+). After awhile it started doing it for a second when id first start the car, but otherwise ran great. I suspect it had just flattened out a bearing and I hope mine is similarly damaged.

What are the odds that I can salvage this, preferably WITHOUT machining?

And it really sucks, I was going to head to tampa tomorrow to pick up an a6 shortblock to mate to my z6 head. Looks like my new del sol shell may be seeing an engine faster than I had expected.

if it hasnt overheated the rod yet, you might be ok

i wouldnt drive it as is.

No-no. I took it back to the blockbuster lot back on 17th and lockwood where I was headed in the first place, and then about 2 miles home, very gently. Like I said it sounds perfect at idle. Ive got my fingers crossed.

Also after a bit of looking, I believe it to be a c-class..likely the 3.0 v6, which explains me not getting completely dusted in a straight line.

Your lucky it wasn't the C63.. My brother owns one of those, And MAN.. Do they ever move.

Anyway.. I would stop driving it. Just because you can't hear it at idle, doesn't mean it's still not doing damage.. :/

Haven't started it since last night when I brought it home. Praying for no horrible damage but im still headed up tonight to pick up an A6 shortblock anyway.. cant beat 40 bucks I guess.

If only I had some ramps or a jack or something here id know by now..

Well today I decide that instead of getting into the bottom end of the car since I had no jack or stands here at home. I went to Tampa and picked up an A6 shortblock for 40 bucks and a z6 intake mani that had been blasted and cleared for 8 bucks.

The block is dirty on the outside but appears to be in pretty good shape, I will need to put a caliper to the rod bearings to be certain but it seems good, there is some wear on the bearing surfaces and the no 2 has about 5 very faint streaks on the top of the rod journal, but you cant feel them and there is no sign of heat discoloration. I suspect its just 18 yrs of startups etc. He told me the cylinders may have one small score, I found it and its not even a score..its a hair thin line that you can barely see, much less feel. I believe it will disappear with a hone, if even that. In all a great purchase considering it came with a new water pump, tensioner and he threw in some z6 head bolts.

The damage assessment of my y8 will really tell the future for this block, as to whether or not I get to keep it on the side and build it the way I would like.. or if I need to do an emergency transplant into the y8, or just swap the head etc etc.

Looks like my engine build may start far before I had intended, since I hate to do things twice.

And damn I wish I hadnt sold my digital camera.

At least with the A6 block.. It'll sit properly in your engine bay..

If you need a Crank or pully for the A6, Let me know.. I have a good one. Also.. I have an oil pan as well.. Might be tapped..

He gave me the oil pan and pickup for it, but thanks. And actually this little guy was planned to go into the del sol, but perhaps it will end up in the hatch after all. I like your thinking though, no more prybar and busted knuckles just to get the mounts lined up.

hook up an oil pressure gauge and see if your still maintaining pressure. if so i wouldnt worry about it.

http://s234.photobucket.com/albums/ee30 ... 001_00.flv

i didnt know what the hell that was but i suspect in had to be the rods. still had good oil pressure. the noise didnt get any worse either. I daily drove it like that too. i eventually replaced it with my vitara setup but i took my sweet ass time building it. hopefully your engine will be just as forgiving. good luck!

That's not a Rod knock. That's Valve tick or some sort..

Rod knock is much more dramatic..

http://www.youtube.com/watch?v=DfJIpiQZtR4&feature=related

i thought that was valve tick too but it wasnt. i'm using the same head off that motor on my vitara build.

Yeah of course my cv shaft chose a great week to rip the sender wire off my oil pressure gauge. Because im running one, it was just unhooked... Today im opening the bottom end and we shall see. Ill also hook up the gauge.

I know now why the engine did what it did. Im pretty far over an oil change and the engine is low on oil..which isnt a problem until you start throwing it through corners at ridiculous speed and high-ish rpm..and it runs dry for just a sec.

it wont run dry
but it will run hot
and old hot oil doesn't have the viscosity to keep the barrier
so the journal rubs the bearing more

Yeah im really hoping for just some seriously worn down bearings.

Its rained right after work 2 days in a row now.

I did get my new short block apart and while the crank seems good (havent meaured) the bearings have seen better days. Need to get pics up asap.

Well boys...lets just say ive never seen anything like this before, and I may or may not have gotten my wish.

As I pulled off the pan all seemed normal except that I only had about 1qt of oil total. there were some thin shavings in the pan and small chunks.

But as I began to pull the girdle off though I began to smell seriously burnt oil, really foul.

I took off the rod bolts and tried to knock the bolts up to get the cap off..the damn bolts popped right out of the rod. The rod doesnt look black or overheated, but the bearings...holy shit. They are worn to hell, and as I was hoping the whole time. I fuckign WAFFLED one of them..like it squeezed out the side a bit, hows that for oil clearance

Now the crank, ill have to clean it up a bit more and inspect better but so far it looks like it has some marks on it but no grooves or scarring..just blackened oil marks. Wish me luck! I have to get a picture of these things, its wild.

Also the mains look pristine.