Is this timing belt noise abnormal? VIDEO

[Bouche Dag]

Just finished dropping a JDM EVO 1 engine in my talon.

I eliminated the balance shafts and hooked up a B&M super cooler oil cooler.

Other than that the motor is stock. It has a new timing belt and new timing components. Everything fell within spec when I did the timing.

There is a high pitched whine that varies with RPM. Timing belt still looks good so I don't think it's rubbing on anything. I also made sure to put the smaller bolts for the pan under the belt as to not chew it up. Is this just a normal oil pump noise? Video doesn't do the noise justice - it's louder in person.

DSM timing belt noise. Is this abnormal? - YouTube

Here's a video in cab with some light revs.

DSM timing belt noise. Abnormal? (In car) - YouTube

 

[TSIfreek]

You have oil pressure?

 

[Bouche Dag]

You have oil pressure?

Primed the pump for about 5 minutes before dropping her in. Oil light goes right out when started (disregard factory gauge as the JDM OFH doesn't have a port for the gauge - it's not hooked up).

 

[allwheelTSI]

To answer the question, no, that's not a normal noise. You positive its the belt making the noise? If so, it wouldn't hurt to take it off and inspect it, pull your pulleys off and inspect them too, as well as their mating surfaces to the block, making sure their is no foreign debris causing misalignment. Once you're sure that's installed properly you can move on to further diagnose the problem.

 

[Bouche Dag]

To answer the question, no, that's not a normal noise. You positive its the belt making the noise? If so, it wouldn't hurt to take it off and inspect it, pull your pulleys off and inspect them too, as well as their mating surfaces to the block, making sure their is no foreign debris causing misalignment. Once you're sure that's installed properly you can move on to further diagnose the problem.

To be honest I have no idea what the noise is coming from. It's got to be the t-belt though. There are no accessory belts hooked up. I'll start pulling things off one by one and starting the car to hear if the noise goes away.

The only abnormal thing I noticed about the timing belt job was the fact that I had to start the exhaust cam half a tooth off in order to get it in time. Also, the oil pump sprocket was way off before I took the belt off. At this point, the belt doesn't seem to have too much slack, nor does it seem too taut.

 

[allwheelTSI]

Its common practice to have and offset a half tooth to get them aligned right once they get tension, so not too much to worry about on that one. Did you follow the hydraulic tensioner adjustment procedure, and verify the rod was extended properly? (not likely the cause, but can't hurt to be sure)

 

[Bouche Dag]

I'm not sure if it's worth mentioning; however, I did take the oil pump gear with the stubby shaft out of my old motor and put it in the EVO engine... They were both straight cut gears.

I also DID take a feeler gauge and measure the clearance between the tensioner arm and the tensioner body and measured within spec according to the FSM.

 

[romeen]

I would verify that the hydraulic tensioner is still within spec. You may have done this, but it's a good idea to wait a minute after tensioning the pulley before tightening it's bolt since the hydraulic tensioner rod doesn't stabilize immediately.

 

[Bouche Dag]

I checked the clearance once immediately after doing the belt, once again after 15 minutes, and once again after 25.

I will tear into it this weekend and measure the clearance again.

 

[shockracer]

I had a timing belt pully make a noise like that (even worse when cold) 2 months later it fell off. Is your pullys new?

 

[Bouche Dag]

Yeah pulleys are all new.

I'm thinking that the belt is on too tight. I'm going to do the drill bit procedure again and redo the tension.

I'll report back. Please keep sending the ideas though guys! Much appreciated!

 

[bryanwheat]

The straight cut gears will make noise, which i do hear, but it sounds like there is something rubbing also. It could be your crank pulley rubbing on the timing cover. As for the tension, i wouldn't worry too much about checking the actual clearance, i would just verify that you can re install the grenade pin and if so than it is good.

 

[Bouche Dag]

Well the video is super low quality (as you can tell). I should shoot a quick HD video.

In person it really sounds like a dog box trans but it's coming from the timing area. It sounds like its coming from the cam gears but I suppose it could be the oil pump resonating up...

As long as the tensioner is okay, nothing's rubbing, and the pulleys are nice and flush and tight I'm not going to worry about it any more. I just really don't want to destroy my valves or my timing belt!

 

[shockracer]

Have you let it warm up completely, just idling?

 

[Bouche Dag]

Have you let it warm up completely, just idling?

No. I've only started it thrice for about 10 seconds per time.

 

[wranglerunner22]

I can't really tell by the video, but do you have the lower timing cover on? The belt could be rubbing up on the plastic cover? Needless to say, I would take the belt off and inspect everything, if nothing really showsup try warming her up and see what happens.

 

[Bouche Dag]

Yeah lower timing cover is on.

I think the best plan of attack is to start by pulling the crank pulley, starting it and listening for the noise, then pulling the timing cover and repeat until I get down to the bare front case. Then I'll do the drill bit/grenade pin procedure and rule out an over tightened belt.

 

[Bouche Dag]

Well I think we have the culprit.

I pulled the lower timing cover. Couldn't get the grenade pin back in so I reset the tension, started her up and Viola - no more noise. However, once I put everything back on the noise came back. I see evidence of the crank pulley rubbing on the cover. I think the pulley is separated.

I'm going to throw a known good one on there tomorrow and report back! Thanks for your input guys!!! Much appreciated!

Resolved!

When the crank pulley is on with all covers on-the noise is present. When the pulley is off-no noise. I've tested two known good pulleys, both made noise.

The lower timing cover is cracked by one of the bolts and apparently it's cracked enough to cause it not to sit flush against the front case causing it to rub on the pulley. Off to the dealer on Monday to get a new black cover!