petrveit

I'm really sorry for picking this problem up again, but I'm really totally lost and don't know what to do. That's why I'm calling for your help guys.

After I have rebuild my 4G H22 (new rings+bearings) and changed my timing belt, the engine makes this sound at 1000 RPM: http://www.volny.cz/veitel/prelude/vtec.mp3.

1) The sound comes only at approx. 1000RPM, nowhere else. Dosn't matter if the engine is cold or warm, doen't matter if I go or stop. It seems that the sound comes from the inside of the engine itself (head or block, form the side of the timing belt).

2) I tried to remove the PS pump, alternator and A/C. No change. I also removed both the crankshaft pulleys, no change.

3) I removed the timing belt gear on the crankshaft, cleaned it, greased the hole in it (no the belt itself) and returned back. I thought there could be some clearence. No change.

4) The autotensioner and adjusting pulley were replaced for the manual H23 one. No change.

5) I removed the balancer belt, no change.

6) I changed the water pump, no change.

The sound disapperas at some conditions: When I set the timing belt tension according to the Helm's, the belt is pretty tight (same as with the autotensioner) and the sound is there (again same as with the autotensioner). When I make it little loose, the sound dissapears, but the belt itself vibrates a bit (about +-0.5cm on its way between the exhaust camshaft and crankshaft). With the autotensioner (when the tension is set right), the sound is still there.

WTF can this be? Why the sound stops squeaking when I loose the timing belt? The timing belt and all around there is brand new and correctly instaled, valves are set to spec. What else is directly connected to the timing belt?

The engine has 50000 miles and runs strong. I don't want to destroy it :-(.

ds2000

Hmmm, funny you should mention this, mine makes the same kind of noise as well, although not as loud...

Hmmm, I'm gna get my belt checked by my local H dealer asap then.

D

__________________
Dave
AIM - ds2RX8

petrveit

At the same engine speed?

ds2000

Yep idleing, its damn site quieter than yours, I put it down to the waterpump/tensioners but if you've done these....

It does seem to be getting quieter though, my advise is get it to a dealer and have them check your cam out.

I'll be doing this as soon as my car gets out of the sprayshop. Yep its gna cost but I don't want this belt snapping on me if its too tight

__________________
Dave
AIM - ds2RX8

willpower101

wierd. my car does a similar thing at 3k. only at 3k. as i pass 3k it grinds. in neutral coming back down past 3k, it grinds, and if i hold it at 3k, it grinds. maybe i should post my sound. but i don't know what it is?