Need some opinion on this engine. Am I screwed?

[X53Jay4.8is]

Originally Posted by TiAgX5

If I was in your position, I would tear down both motors, send the best block and heads to a good shop for machining/refreshing, then rebuild one good motor with best parts from both motors.

As stated prior, cheap/non-running BMWs usually end up costing more in the end then fair priced/well sorted ones.

This is solid advice

[X53Jay4.8is]

Originally Posted by TiAgX5

He got the motor for $3500.

Wow thats alot for the condition of that motor.

[upallnight]

Originally Posted by TiAgX5

If I was in your position, I would tear down both motors, send the best block and heads to a good shop for machining/refreshing, then rebuild one good motor with best parts from both motors.

As stated prior, cheap/non-running BMWs usually end up costing more in the end then fair priced/well sorted ones.

Especially the cheap non running BMW or a running BMW with major issue. I would classify knocking sounds from an engine as a major issue.

But I have brought my share of non running cars, especially exotic cars like Lotus and a Lotus with a rod knock.

[TiAgX5]

Especially the 4cyl turbo Esprit, these needed engine rebuilds every 20k miles if driven hard.

[upallnight]

Originally Posted by TiAgX5

Especially the 4cyl turbo Esprit, these needed engine rebuilds every 20k miles if driven hard.

If you don't drive a Lotus hard than why bother to buy a Lotus. I remember driving my Lotus on LSD (Lake Shore Drive) and this dude in a BMW came up to me and was edging me to race him. We were approaching the two 90 degrees turn on the drive so I decided to go for it. He kept up with me but when we reach that first 90 dgree turn I still haven't brake and it was all over for him. He put that BMW on the concrete divider. Drove away laughing to myself, you can't out brake a Lotus.

[X53Jay4.8is]

Originally Posted by white46

Hi,

Some of you already know I've bought 03 4.6is pretty cheap.
More info on, http://www.xoutpost.com/bmw-sav-foru...-03-4-6is.html

Anyhow, I've purchased new motor, me and my friend replaced guides, rebuilt vanos, PCV valves, etc... anything that is PITA to do after the engine goes in.
It's taken pretty long time because we both have family with young babies and full time job. So much we can work on each day.

So we are at final stage, torquing down the crank shaft bolt.
When we were tighting it up, crank spinned, and all of sudden water gushed out from exhaust port. #3 cylinder exact.

I'll let pics and videos to do talking.

https://youtu.be/xThqS5Bu4vs

https://youtu.be/TWum8nJHqPY

I tried to contact seller but the engine only has 30 day warranty. so pretty much no help financially.
Having said that, he said crank the engine without spark plug and drip some engine oil, it should clean itself up and all water should come out. Also told me that sand like particles in water is from carbon build ups. Nothing to worry about. Is this trustworthy?

I never seen anything like this.... I see some rust on the valves.... Not sure whether there could be some corrosion on piston and cylinder bore.

What you guys think? Is this engine garbage?

Oh I forgot to answer your question directly. This engine is probably toast and yes you got screwed.

[Joshdub]

Originally Posted by upallnight

If you don't drive a Lotus hard than why bother to buy a Lotus. I remember driving my Lotus on LSD (Lake Shore Drive) and this dude in a BMW came up to me and was edging me to race him. We were approaching the two 90 degrees turn on the drive so I decided to go for it. He kept up with me but when we reach that first 90 dgree turn I still haven't brake and it was all over for him. He put that BMW on the concrete divider. Drove away laughing to myself, you can't out brake a Lotus.

Street racing is not cool. Especially when you cause an accident and flee the scene.

[upallnight]

Originally Posted by Joshdub

Street racing is not cool. Especially when you cause an accident and flee the scene.

Didn't cause the accident he just thought he could keep up with me and he found out he couldn't. My car didn't touch his car and he didn't touch my car. It's call understeer, which is built into most cars. When the car is not turning into a turn but continue to go straight you just need to let up on the gas to regain control, but he didn't. The opposite would be oversteer where the back end would come around like in a rear engine PORSCHE 911. In that case you don't lift off the gas pedal or else the car will swap end.

You weren't there so you have no right to accuse me of causing an accident and fleeing the scene.

[crystalworks]

Originally Posted by upallnight

If you don't drive a Lotus hard than why bother to buy a Lotus. I remember driving my Lotus on LSD (Lake Shore Drive) and this dude in a BMW came up to me and was edging me to race him. We were approaching the two 90 degrees turn on the drive so I decided to go for it. He kept up with me but when we reach that first 90 dgree turn I still haven't brake and it was all over for him. He put that BMW on the concrete divider. Drove away laughing to myself, you can't out brake a Lotus.

Though I certainly don't condone street "racing," I had something similar happen to me in my 2001 GT Mustang. It had been lightly modified, nothing serious, bolt-on power adders, and a good set of lowering springs and Bilstein sports.

Was on my way home in the evening and another mustang pulled up next to me. I out accelerated him and was first to a left turn under an overpass. I had upgraded the brakes to Cobra calipers/rotors and I guess was able to out brake him and had no trouble making the turn. He spun and went into the concrete wall... I was young at the time and certainly wasn't going to stop. It didn't look serious, though don't think the car was driveable afterwards.

Not one of my prouder moments... but no one's perfect. I had stopped and have stopped to help people out numerous times so I'm still in the black.

[CapeX5]

Boys, let's stay on point here. Liked the racing story, and totally appreciate it! Love shoving it up somebody's a#$ when you know your better. But our poor Brethren has a f$%*% motor, is out $3500 right now and trying to figure out what to do.
Depending on your financial situation, you have to decide whether to stay with this rig and see it thru till completion. I totally agree with the suggestion of making 1 good engine out of the 2. Comes down to whether you do it or pay a shop. I did the exact same thing with a 4.4 that had piston slap. Currently going 5K miles on the "frankenstein" motor and all is good. And it looks like OP hasn't commented back yet. I hope he does so all of this great advice isn't lost.