1987Porsche944WithRealLongName

Alright, so when I started up the first time oil sprayed all over my belts. For the most part I think that has dried up or I've wiped it off, leaving just a bit of residue. However I get a sound sort of like a chain... My timing belt feels like it's tightened properly but my balance shaft belt could be a little on the loose side, although it doesn't sound like a belt related sound, or at least not one I'd expect to sound like.

Also notice the timing belt seems to shift around. That's the part that really scares me. I'm certain the sound is coming from the front of the engine, I get good oil pressure and I torqued the crank bolt down well. When I changed the oil after the first run there weren't very many metal bits stuck to the magnet at all, but there were a ton of tiny particles suspended in the oil clouding it up.



Update** The noise was the belt guard on wrong, however the walking persists..

gcb951

I don't like the way that sounds either.

M Berg

Have you tried to run it without PS and alternator belt? Maybe something to try in order to eliminate that parts.

Richgreenster

I would check to see if you have put all of the parts back together in the correct orientation and place. I am guessing that it is not assembled correctly.

MM951

How did you set the balance shafts without the rear cover?

slap929

a bad roller? sounds like a grimy bearing to me, but I dont know. What would cause the timing belt to flex like you say? That part is odd...

Crackership

Did you check/replace your rollers when you did the belts? With the crappy speakers on my phone, that kind of sounds like bad bearings in a roller.

1987Porsche944WithRealLongName

All the rollers are new, waterpump looked in good condition.. How easy should they be to spin by hand with the belt tightened down? I didn't mess with the inside of the balance shafts much though, just took them off and put on a new bearing/seal and put them back on.

I don't have the power steering pump in the car, and a/c is deleted. There doesn't seem to be any damage on the belts themselves.

Richgreenster

I am thinking that if your belt is walking, then something is not right in that area. The way that you described it, it is not normal.

slap929

I would check all the turning bits that you have changed and see if they are orientated the correct way. You said it worked fine until you spilled some oil?

400hp944

What he said ^^^

1987Porsche944WithRealLongName

Actually it didn't even do it immediately after I spilled the oil. I turned the motor over by hand to see if I'd notice anything but no sounds or resistances were had... I didn't open the cam housing during the rebuild so I couldn't have forgotten something there. If I would have orientated anything wrong in the oil pump area I wouldn't have even had pressure would I?

Richgreenster

You are going to have to stop trying to guess what is wrong. Open it up so you can see it. Make sure every part is assembled correctly using a parts manual, then if you do not see anything there then start it back up and see If you can isolate it visually while it is running. If you do not see anything rubbing agaist the block or ?? then thy to figure out where the noise is comming from exactly. I use a very long extension placed upon the suspected area my zygomatic. (cheek bone). This will amplify the sound. Try it out.. It works for me.

P.S. good luck. and be careful.

1987Porsche944WithRealLongName

As much as I'd love to pull the engine completely apart again I no longer have the means to do so. I pulled the balance shaft and alternator belts and the noise persisted.

However when I got home I noticed the metal bracket on my waterpump is flipped over with the gap on the bottom of the top side. Maybe the oil kept it lubed and once it dried up it started to act up. Won't be able to try for another few days though.

Richgreenster

Can you get in there with a camera and post some pictures for us?