Should I be concerned
 

Hey Guys, I need some opinions on this. I bought a perrin crank pulley and just installed it following Perrins guidelines and the DIY guide on this forum. I torqued the bolt down to 33 ft/lbs and inspected the pulley to ensure it was sitting flush when I realized that the bolt wasnt completely centered in the opening for it in the pulley. I took the bolt out, re-seated the pulley, and torued down to 33 ft/lbs and it looked the same. It is alligned properly and all the components behind it are in place. What do you think? Should I be worried??

I did my best to take good pictures but it was kind of hard. It is not off by alot, maybe a mm or two. May be me freaking out being OCD and tired, but I do not want my car to sh!t the bed on the way to work tomorrow morning....

Turn the engine on and watch it spin. Watch for wobble.

You should replace that bolt every time you pull it out. The bolt actually stretches when torqued.

I havent read about anyone replacing it yet? I probs should look into it. It took a lot of force to get it off. I don't think perrin says to get a new one but I'll double check.

Like @Candlejack said turn the engine on and check for abnormal wobble. You should re-torque it after about 50 miles to ensure everything is good.

Yikes, 33 is to low. As far as I remember should be 90 something for crank pulley bolt.

Yeap as per DIY 94, hope you did not run your car yet :-(


http://www.ft86club.com/forums/showt...=perrin+pulley

all bolts stretch ever so slightly when properly torqued, that's what creates and maintains your clamp load. no need to replace unless specified. now if you over torque and the bolt is yielded(stretched beyond elastic region) then it will begin to neck then ultimately fail.

Sorry guys should have clarified more. Directions say torque to 33 to check alignment then do a final torquing to 94.

It has been torque to 94 ft/lbs with a brand new torque wrench, ANNNDDDDD there is an issue....:mad0260:

It is ever so slightly spattering oil on my exhause manifold because you can smell it. The pulley was clean and is oily now with some black particles on it, which i am assuming is the belt...

My auto tensions is bouncing ever so slightly, but I do not know if this behavior is normal.

I guess the best route of action would be to overnight a bolt, and reinstall with that.

Would it be worth my while to back the bolt out, re seat the O-ring again, and re-torque the bolt I am using? Or would that only stress the bolt further? I have all the tools on me and can easily do. I will most likely have my car towed home anyways.

Did you replace the o-ring?

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According to this the tensioner is suppose to bob a little bit, which make sense in a way, so alignment of the crank pulley which is good.

So one of two things come to mind. The Oil seal O-ring unseated when I pushed the pulley into place - or- the bolt faced to much force and has twisted.

I did not replace it with a new O-ring but I did put it back into the space it belongs... It was kind of easy to disturb it so it might have slipped out.

I believe it's just one those things that you can't reuse anymore or risk having issues. If you going to get a new bolt, get a couple of the orings.

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I think in your OP at the bottom, you can see the O-ring slightly unseated? Could just be a trick on my eyes but that's what I'm seeing...best of luck and don't rush anything! Last thing you want is a sheered crank bolt...

I think what you are looking at is a little bit of oil that collected in the pulley. Perrin calls out that you oil the threads and the flat part of the bolt behind the shoulder which I did do. The O-ring is located behind the pulley.

You 100000% need a new o-ring when you replace pulleys. Non negotiable. That's where your problem is.

Don't worry about the bolt being centered, as long as the pulley doesn't wobble itself.

My O-Ring never came out when I replaced mine. I just made sure I oiled the bolt but I am back to the stock pulley for my SC kit.

If you're going to go to the trouble to install the pulley, might as well spend the extra .80 and replace the o-ring.

Thanks guys.

What I think happened was that the O-ring partially unseated itself as I was aligning the pulley and sliding it into place. I then torque the bolt down, which squeezed the sh!t out of the O-ring.

This would explain why there is only small amounts of oil and why there is a minor amount of belt wear. The pulley is maybe half a mm out of level because the squished O-ring. My theory anyways. I am doing to order a new bolt from a Subaru Dealer, and see if I can get the O-ring somewhere today. Would like to get my car back to safe condition

but in the mean time, "Hey babe I'm taking your car to work" She is going to be thrilled lulz :sigh: at least she drives a fiesta ST and not something boring.

Anyone have the part numbers for the crank pulley bolt and O-ring? At work and can't research it quite yet...

BTW, Thanks for all the responses!

You have to grease the head of that bolt or the pressure of torqueing it will pull it off center.

From the manual:
"(4) Apply engine oil to the thread and washer of crankshaft pulley set bolt.
(5) Use the SST to secure the crankshaft pulley and tighten the crankshaft pulley set bolt.
SST 18355AA000 18334AA000
Standard value:
Tightening torque=20N·m { 204kgf·cm} {14.8ft·lbf}"


And the torque is NOT 90 ft-lbs.

It IS: 14.8 ft-lb, then 90 degrees of rotation from there.

"(7) Use the SST to secure the crankshaft pulley and retighten the crankshaft pulley bolt by 90° until the reference line (A) and end line (B) are aligned."

And the o-ring is labeled as a one time use only.
The bolt is NOT labeled as such

I did oil the threads and the flat part of the bolt that presses against the pulley. Perrin calls for it in there instructions, and it was in the DIY. I applied a healthy amount of oil, and as you can see in the pictures it collected at the bottom of the bolt placement hole in the pulley.

What Perrin says when torquing, is to torque to 33, then check your alignment. make sure the pulley is properly placed, then torque to 94. There should be 45 degrees of turn when going from 33 to 94.

I double check my torque spec. I torque it down. Back the torque wrench to min. value then reset it to 94, and torqued the bolt to make sure.

Well found this on the internet

O-ring packings are never reusable, on anything.

Would autozone carry that o-ring?

And any know that part number?

Dealership. Just get it there.

Sooo at lunch I went out and cleaned the parts with oil on them, then started my car. I let it idle for 5 minutes, nothing. Revved and held at 2,500, and nothing, revved and held at 3,500 and nothing. So i did a quick redline, and still nothing. Let it idle for ten more minutes and nothing....

So what I think happened is upon moving the stock pulley a small amount of oil seeped out. When I put the bolt back in, it was way over oiled, and all that oil came off.

I cannot reproduce the same thing that happened this morning, so it must have been that. I started slow and took a 5 minute drive to the bank, and it was fine so I drove home. I still plan on replacing the O-ring

Just want to say thanks to everyone who helped me out. It is really good to have a forum full of supportive members. I luckily did not have any issues but if I ever do, glad to know someone has my back:thumbsup: