Gearbox/clutch/bearings/rage

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TehAshleigh
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Gearbox/clutch/bearings/rage

Post by TehAshleigh » Tue Aug 20, 2013 10:55 pm

Hiiii.

I replaced my clutch and release bearing about 6 weeks ago due to a whiny release bearing. Everything was dandy up till this evening when I took it for a drive and the same noise started again. It's now at the point where it screams every time I put the clutch in.

Any ideas? The release bearing was fucked - but there's no way I would bave gone through a brand new one already...

SkilletKid
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Post by SkilletKid » Tue Aug 20, 2013 11:01 pm

Is it making a clattering sound? Because this problem sounds very much like the problem a friend of mine had on her NA8 which "just stopped after a while" (quoting her).
"Yes, you got that, 16 years of [MX5] ownership and you too can become the Obi-wan Kenobi of not giving a s**t." - Moti

TehAshleigh
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Post by TehAshleigh » Tue Aug 20, 2013 11:07 pm

It's almost like a constant whine and grind. It will squeal every now an again but it's only if I'm changing gear or have the clutch engaged.

It feels like it's coming from the clutch end because I can feel it through my feet rather than through the test stick, if you were to compare it to something like crunching a gear.

God I hope that makes sense.

SkilletKid
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Post by SkilletKid » Tue Aug 20, 2013 11:20 pm

Does it sound like a door squeaking like in horror movies?

Will need others more knowledgeable to confirm but I have a feeling it's either the pilot bearing or you need to grease up the clutch slave cylinder pushrod and/or the clutch fork.
"Yes, you got that, 16 years of [MX5] ownership and you too can become the Obi-wan Kenobi of not giving a s**t." - Moti

TehAshleigh
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Post by TehAshleigh » Tue Aug 20, 2013 11:29 pm

SkilletKid wrote:Does it sound like a door squeaking like in horror movies?

Will need others more knowledgeable to confirm but I have a feeling it's either the pilot bearing or you need to grease up the clutch slave cylinder pushrod and/or the clutch fork.
Ughhh did the whole thing on axle stands last time. Not looking forward to pulling everything apart again haha

SkilletKid
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Post by SkilletKid » Wed Aug 21, 2013 1:13 am

The slave cylinder greasing shouldn't be too difficult if you can get the car up. Even just WD40 sprayed liberally on the fork and the push rod of the slave (slide the rubber bits to the side to get the spray in there) should atleast confirm/deny if that is the problem.

However it is quite late posting this and am probably giving bad advice at this point. If anyone notices anything wrong call it out and I'll edit to save people from silliness.
"Yes, you got that, 16 years of [MX5] ownership and you too can become the Obi-wan Kenobi of not giving a s**t." - Moti

2low2c
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Post by 2low2c » Wed Aug 21, 2013 7:45 am

did you do the spigot bearing in the fly wheel? without listening to it it is hard to say but the three most likely causes are spigot bearing,release bearing or a weak slave cylinder not quiet releasing fully

TehAshleigh
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Post by TehAshleigh » Wed Aug 21, 2013 9:12 am

2low2c wrote:did you do the spigot bearing in the fly wheel? without listening to it it is hard to say but the three most likely causes are spigot bearing,release bearing or a weak slave cylinder not quiet releasing fully
I wish we could upload sounds!!
You could be right, it could be the spigot bearing. We didnt do that - just the release bearing and clutch. Im seeing Cole this evening and Furai this evening i think so ill get their opinions on sounds.

I drove to work this morning and its slowed down to a 50/50 chance of noise. It could be the rain, i dunno. Im still learning :( I found that releasing and re-engaging the clutch quickly seemed to stop the noise a lot of the time. Im really heavy when i change gear, so i tried even half engaging it and it still does it.

Sigh.
I love/hate my car.

On the plus side!! Here is a photo of the celebratory drive - was pretty happy to have all my bits and pieces on and painted:

Image

broomfish
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Post by broomfish » Thu Aug 22, 2013 10:24 pm

I did a clutch for a customer that had exactly the noise you describe and it was the spigot bearing had failed.
Shame to have to do the job again for the sake of a $6 bearing
regards

Peter Lee
Broomfish
www.broomfish.co.nz

TehAshleigh
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Post by TehAshleigh » Fri Aug 23, 2013 8:32 am

broomfish wrote:I did a clutch for a customer that had exactly the noise you describe and it was the spigot bearing had failed.
Shame to have to do the job again for the sake of a $6 bearing
Hey! Thanks peter :)
Yeah i took it into cole and he said its probably the spigot bearing. My top bolts for the gearbox were a bit loose too so im planning to hoist it, pull it apart and see if theres any other damage.

I hate gearbox removals.
XP

Skilfil
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Post by Skilfil » Fri Aug 23, 2013 9:18 am

broomfish wrote:I did a clutch for a customer that had exactly the noise you describe and it was the spigot bearing had failed.
Shame to have to do the job again for the sake of a $6 bearing
Wasn't a red NA6C about 2 years ago was it? I took mine to you for that exact issue, it was gone after a new clutch and spigot bearing.

broomfish
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Post by broomfish » Fri Aug 23, 2013 9:37 am

yeah thats the one i was referring to.:wink:

The spigot bearing had actually collapsed which was causing the noise
regards

Peter Lee
Broomfish
www.broomfish.co.nz

TehAshleigh
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Post by TehAshleigh » Fri Aug 23, 2013 10:02 am

Thanks so much everyone. Ill get to pulling out the gearbox this Sunday. Looks like its going to have to be another home job. If anyone wants to join and share an asahi lemme know!

Angreal
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Post by Angreal » Fri Aug 23, 2013 10:25 am

TehAshleigh wrote:Thanks so much everyone. Ill get to pulling out the gearbox this Sunday. Looks like its going to have to be another home job. If anyone wants to join and share an asahi lemme know!
Hmm don't freeze one for me :/ Would be keen to see how it's all done though

Growler
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Post by Growler » Fri Aug 23, 2013 11:07 am

TehAshleigh wrote:I hate gearbox removals. XP
Pulling the gearbox is such a bitch of a job, thats why I pull the engine and box out in one hit.
And yes I would have changed the spigot bearing anyway as preventative maintenance. Don't put too much grease in the bearing though as you can hydraulic the bearing out.
When I did my clutch I took the standard flywheel off as well and skimmed a couple of pounds (just under a kilo for the young people) off it, then got the whole flywheel/clutch assembly balanced.
It was a cheap performance upgrade!
(Don't take too much off the flywheel though - its only cast steel. Not as strong as a billet aluminium one).

PLSEME
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Post by PLSEME » Fri Aug 23, 2013 4:26 pm

Growler wrote:
TehAshleigh wrote:I hate gearbox removals. XP
Pulling the gearbox is such a bitch of a job, thats why I pull the engine and box out in one hit.
And yes I would have changed the spigot bearing anyway as preventative maintenance. Don't put too much grease in the bearing though as you can hydraulic the bearing out.
When I did my clutch I took the standard flywheel off as well and skimmed a couple of pounds (just under a kilo for the young people) off it, then got the whole flywheel/clutch assembly balanced.
It was a cheap performance upgrade!
(Don't take too much off the flywheel though - its only cast steel. Not as strong as a billet aluminium one).
Who did you get to do the Balance on your Flywheel :?: :?: :?:
Scientists now foresee the future will be much more futuristic than they first forswore

Growler
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Post by Growler » Fri Aug 23, 2013 11:58 pm

PLSEME wrote:Who did you get to do the Balance on your Flywheel :?: :?: :?:
It was a local guy in New Lynn. Not too sure if he is there anymore (Would have to check). I think it cost me about $50 to do it.
If I had a big enough lathe at the time I could have lightened it myself, and if I had the gear balanced it as well.
There will be other engineering companies out there who can do it though...

Snapfrozen
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Post by Snapfrozen » Sat Aug 24, 2013 6:52 am

I've had amazing work done by autoclutch before but never any flywheel work..

broomfish
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Post by broomfish » Sat Aug 24, 2013 6:56 am

Snapfrozen wrote:I've had amazing work done by autoclutch before but never any flywheel work..
Ive had exactly the opposite and will never use them again for anything ever.
regards

Peter Lee
Broomfish
www.broomfish.co.nz

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