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Anyone solved their wobbly crankshaft pulley?

 
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Old 10-28-2010, 09:46 AM
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Anyone solved their wobbly crankshaft pulley?

I've read several posts on this board about people replacing their crankshaft pulley in an effort to fix the wobbling issue. However, I haven't seen any posts where someone says "yeah, that fixed it!". Anyone have any success stories?

I've got a 99 Prelude that is having this same issue. I'm contemplating whether I should spend the money, time, and effort to replace my crankshaft pulley. But if there's zero chance this will solve the problem, then I'd rather not mess with doing the replacement.
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Old 10-28-2010, 11:00 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Tighten it. 181 ft lbs.
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Old 10-28-2010, 11:28 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Hi havikprelude,

Thanks for the advice. Tightening the pulley is going to be my first attempt at fixing it tonight. It seems like I've read several threads where people didn't get anywhere solving the wobble, so I'm wondering if this is even potentially fixable by replacing or tightening the pulley.

And I'll post my tightening results this evening.

-Kapernicus
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Old 10-28-2010, 11:59 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Well first off, you don't need the hi whatsyourname to begin your post with, and you don't need to sign it at the end. We're pretty laid back here, formality is not necessary.

Secondly, tightening it has worked for other people, but from what I've heard you gotta really put some kung fu on it. 181 foot pounds is not exactly something you can acheive with one hand. A breaker bar will prolly be required.

Third, I honestly don't know which way you'd wanna tighten it. As far as I knew, you should only ever turn the crank counterclockwise, but then I don't see how that would tighten it. Might want to look that up before you start cranking on stuff.



If that doesn't work, someone else will have idears.
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Old 10-28-2010, 12:38 PM
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Re: Anyone solved their wobbly crankshaft pulley?

Cool, thanks for the info. I've got a Honda service manual, so I'll look which way to tighten the bolt.

Yeah, sorry for my formality. I'm new around here, and I was trying to avoid coming across as a douche.
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Old 10-28-2010, 01:16 PM
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Re: Anyone solved their wobbly crankshaft pulley?

You tighten it the same way you tighten any other bolt, just make sure to get a crank pulley tool to hold the pulley as you tighten it. You can go rent a torque wrench from Autozone that goes to 200 ft-lbs.
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Old 10-28-2010, 01:44 PM
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Icon14 Re: Anyone solved their wobbly crankshaft pulley?

The crank pulley tool should be arriving today from Amazon, and I've got a big a$$ torque wrench that's supposed to go to 250 ft-lbs. Tonight I shall see if this fixes it.
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Old 10-28-2010, 02:51 PM
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Re: Anyone solved their wobbly crankshaft pulley?

i had the same issue nd all i did was tighten it nd shes still goin
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Old 10-28-2010, 05:38 PM
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Re: Anyone solved their wobbly crankshaft pulley?

I had to replace mine because the teeth next to the square woodruff key were compressed together/worn down, and the space where the key went was warped open a little. I put on a new pulley that didn't have any of these problems, and it fixed my issue. What condition is yours in?
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Old 10-28-2010, 06:10 PM
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Re: Anyone solved their wobbly crankshaft pulley?

if its wobbling then u might have a worn down woodruff key. at least that's what happened to mine. not to mention a mangle pulley and 3 ate up belts. I'd take it of and check first after all its a small but sufficient piece.
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Old 10-28-2010, 09:21 PM
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Re: Anyone solved their wobbly crankshaft pulley?

I replaced mine 2 times while i was rebuilding my head.. never solved the issue. Next time i go to a professional mechanic Im going to ask them if they can tighten it to 181 ft/lbs of torque, see if that works
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Old 10-28-2010, 09:43 PM
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Re: Anyone solved their wobbly crankshaft pulley?

Hi OP.

I've actually had to completely replace my Crank shaft pulley and key for my Lude.

The process of replacing it isnt tricky, but you will definately want good tools.

a 3/8 torque wrench and the special Honda crank tool, a swivel. Getting to the bolts on the tensioners was increadibly awkward and difficult, but with a swivel it makes things much much easier.

A good idea would be to replace your belts while the pulley is off. It also wouldnt be a bad idea to use some threadlock on the bolt before you put it in. You should inspect that key, make sure its not worn down, because if it is that pulley wont stay in.

Heres one of my threads that might answer some questions you'll have.
Installing crank shaft pulley - Honda Prelude Forum - Prelude Online.com

I have successfully replaced my harmonic balancer with the help of other Lude owners.

Its nothing super difficult, anyone can do it
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Old 10-28-2010, 09:51 PM
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Re: Anyone solved their wobbly crankshaft pulley?

i agree with guys here ,if it wobble ,you need make sure the wedge in the crank isn't messed up because then the crank is done , so make sure take your time and take it apart or have some one do it and check carefully .good luck.
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Old 10-29-2010, 02:28 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Just replaced mine a few months ago. Damn thing was loose and i never knew. One day i heard something smacking around and i pull over to look and i see it all over the place. i went to pull into a parking lot maybe 100 feet away and it snapped my belts and bolt. Had to replace the bolt, pulley, and drill tap the snapped bolt in the crankshaft. All was well. Just came loose and broke. Like everyone has said its not that hard to replace it. But make sure your cam isnt messed up. Good luck
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Old 10-29-2010, 03:16 AM
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Re: Anyone solved their wobbly crankshaft pulley?

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i agree with guys here ,if it wobble ,you need make sure the wedge in the crank isn't messed up because then the crank is done , so make sure take your time and take it apart or have some one do it and check carefully .good luck.
Exactly what he said!!!

In my case with my USDM motor...

the crank shaft key was so badly worn that it went from the orig "U" shape to what looked like a CHECK MARK. Literally one said of that key was so grinded out that it formed a check mark and also my pulley itself...OMFG!!! The teeth on that sucka so grinded to bare nothing. When I gassed I would hit up to near 4000RPM before gettin any friction to make the car move!!! That's how bad mine was!!!
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Old 10-29-2010, 06:33 PM
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Re: Anyone solved their wobbly crankshaft pulley?

if your crank pulley is wobbling, you're either missing the key, the key is bent, or the pulley itself is bad. Other than that, your crank pulley should not be wobbling at all....
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Old 10-30-2010, 06:27 PM
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Re: Anyone solved their wobbly crankshaft pulley?

Ok guys, the pulley was definitely *not* loose, so that's when I decided to remove the sonofabitch for inspection. The key appears to be perfectly fine and the splines inside the pulley do not looked ground down in anyway. So, would there be anything else I should check, or should I just take a chance that a new $137 pulley is going to fix it? I did notice the pulley has a soft rubber-looking substance near the rim, which appears cracked or dry rotted like an old tire. Could this cause the pulley to spin out of balance?

I really hope the wobble is not a symptom of something like worn crankshaft bearings or some other hard-to-fix ****e.
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Old 10-30-2010, 07:08 PM
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Re: Anyone solved their wobbly crankshaft pulley?

Yes if that part is torn up that could definitely be an issue.
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Old 11-01-2010, 11:06 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Ok, got a new pulley, belts, bolt, and key ordered from the stealership. Should have it all by tomorrow morning. If that doesn't fix it, then I'll just drive the lude until the engine explodes.
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Old 11-01-2010, 07:01 PM
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Re: Anyone solved their wobbly crankshaft pulley?

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Ok, got a new pulley, belts, bolt, and key ordered from the stealership. Should have it all by tomorrow morning. If that doesn't fix it, then I'll just drive the lude until the engine explodes.
good luck man! If that fixes it I will be going the same route too
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Old 11-01-2010, 07:22 PM
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Re: Anyone solved their wobbly crankshaft pulley?

It would be wise to change the PC and A/C belts while you're doing this
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Old 11-02-2010, 11:04 PM
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Icon14 Re: Anyone solved their wobbly crankshaft pulley?

UPDATE: Installed the new pulley, power steering belt, alternator\ac belt, bolt, and woodruff key and I'm happy to report the wobble is practically gone and so is the droning noise that called my attention to the wobble in the first place. There actually is still a slight wobble at idle if you look closely, but I'll live with it. I'll recheck in a few days to make sure the wobble does not reappear.

Thanks for everyone's help and advice!!!
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Old 06-12-2011, 07:15 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Same thing happend to me, both the pulley and key needs replacing,
i have a quick question on instaling the cranshaft pulley,
should the crank pulley be instaled all the way on to the cranshaft,so its even with the end of the shaft and the key, on mine the crank sticks out only enough to slide on the pulley about %80 on
is that good
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Old 06-12-2011, 01:24 PM
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Re: Anyone solved their wobbly crankshaft pulley?

PrelCan,

I've slept since I did mine, but I don't recall how much of the shaft stuck out after putting on the pulley. On mine, it slid onto the crankshaft rather easily (after lining up the splines correctly) until it hit a definite stopping point, to which I assumed the pulley was where it needed to be at on the crankshaft. Then I tightened it down with some red loctite, reinstalled the belts, and all was good.

Hope that helps!
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Old 09-12-2011, 10:37 PM
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Re: Anyone solved their wobbly crankshaft pulley?

yeah I have the same question. I have an 96' h22a1 and my crank bolt came loose. Tore up the lower cover and tore the h22 pulley a new one. So I picked up a used but in top condition H23 pulley and key. So how do you install the key? I installed it i believe with the end that has a little worn down on the bottom and slid it in. With the square edge on the outside. It sticks out off the crank a bit. I probably shouldn't have done this but I stuck the pulley on there and torqued it to 225 ft lbs. with no loctite. Did I install the key right? Should I take off the pulley and get a 96' h22 crank key from honda and then install the h23 pulley? Maybe I just didn't install the key correctly. You can install it like 20 different ways. What's the correct way? By the way I called honda and the crank keys are the same on the 96' h22a1 and the 96' h23 engines. The key and pulley I got may of been on a 92' Si prelude. Possibly different length snouts and keys for different year engines... Who knows? My pulley wobbles a tiny bit but the car runs great... I didn't pay enough attention to see if the pulley sat flush on the crank so the bolt wasn't up against the key and not the crank. That's the part I'm worried about.

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Old 09-13-2011, 03:11 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Mine came off while driving...

New pully and key and just cranked it as tight as possible. Drove 10 000km to the West coast and back only a week later, it's been 6 months and haven't had an issue. She always is a bit wobbly though. I wouldn't be that concerned, seems like many Ludes do this?
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Old 09-13-2011, 08:43 AM
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Re: Anyone solved their wobbly crankshaft pulley?

I'm worried I have the wrong key installed and it will just come loose again. I torqued it to 225 ft. lbs. with no loctite. I know that I saw the key stick out off the crank a little but I think that h23 pulley sat off the snout a little as well so the bolt wasn't flush with the crank. I think it's sitting on top of the key where it's tightened to. Can anyone confirm key part numbers? If there are different keys for any year of h23 Si prelude's which may be different than the h22 key? I think I may have to get an h22 pulley and h22 key to make sure they are flush with the crankshaft. Please can anyone help? Also how do you install the key. In what EXACT position should the key be inserted into the crankshaft?

thanks
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Old 07-18-2014, 12:00 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Quote:
Originally Posted by PrelCan View Post
Same thing happend to me, both the pulley and key needs replacing,
i have a quick question on instaling the cranshaft pulley,
should the crank pulley be instaled all the way on to the cranshaft,so its even with the end of the shaft and the key, on mine the crank sticks out only enough to slide on the pulley about %80 on
is that good
I just finished replacing my timing belt and I am having the same problem. I noticed when I took the old key out it was sheared off a little bit so I already got a new one from Honda. I don't know how much it was wobbling before but it has a minor wobble now; maybe like a 1/8" to 3/16" and is pretty obvious visually.

It also doesn't perfectly line up with the crankshaft. The Crank Pulley is about 1/8" off the crankshaft.

I know I'm late to the party but has anybody resolved a similiar issue?
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Old 07-18-2014, 12:09 AM
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Re: Anyone solved their wobbly crankshaft pulley?

Yeah that's normal, however the wobble isn't.

Sadly it's gonna need a crankshaft to resolve the wobble 100%. However the reason it occurred is failing, loose crank pulley bolt. Over time the permanent damage occurs. So basically to at least get it damn close make sure the key way is clean and not tore up in any way. If it's not a perfect valley with sharp edges then I'd find someone who can guarantee a good job and weld a little on the crank and grind down the excess so the pulley sits on there nice and secure and tight.

I'd get a brand new crank pulley, and a brand new key as well as brand new crank bolt for it. Apply red lock tight to the threads and throw 225 lb ft if you don't want it ever coming loose ever again.

I have yet to have my crank welded as my valley is tore up. I've been using a high milage h23 crank pulley & key on my h22 for over 2 years now or my last post above. I saw that it sit off the crank a bit just like you guys see and that's apparently normal I suppose. Since once you throw 225 lb ft it tightens flush. I do have a bit of wobble but the pulley has not budged for 2 years now.

I think I took the stock spec and literally threw another 50 lb ft on it. Which is safe and it will come loose without breaking off as long as your smart about it.

Good luck guys
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Old 07-18-2014, 09:22 AM
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Re: Anyone solved their wobbly crankshaft pulley?

There's usually a bit of wobble as the harmonic balancer balances harmonics.
Unless your motor is super duper balanced there is some inertial forces going on inside the block which causes some vibrations that the rubber between the two parts of the crank pulley absorbs.

If the outter parts moves back n forth but the inner part don't, that's normal.
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Last edited by bykfixer; 07-18-2014 at 09:25 AM.
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