How much noise is a 5-speed supposed to make?
Ever since I replaced my clutch and transmission fluid a couple months ago, my transmission has been whining. I'm using the Ford MTX fluid, and I put in an FM stage 1 clutch. Did I do something wrong or is the new fluid making it whine or something?
I can only hear it at low speeds, or when in neutral with the clutch out. It's not really loud, but I'm pretty sure it wasn't ever this loud before. This transmission has about 55k miles, and about 3k of those are turbo'd. |
my buddys 5 speed makes all kinds of racket but he has almost 200k miles on it and i am sure it is more than alil worn in the synchros etc.
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Bearings make noise when cruising, not synchros.
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Originally Posted by hustler
(Post 730111)
Bearings make noise when cruising, not synchros.
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Originally Posted by magnamx-5
(Post 730178)
His shit makes noise all the time while i dont think he has any real bearing damage i told him to be on the look out for a 6 speed or a better 5 speed.
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So I should just keep driving it and hope? Is there some common mistake while changing fluid and clutch that would cause this noise? I'm pretty sure it started suddenly.
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Originally Posted by skidude
(Post 730187)
So I should just keep driving it and hope? Is there some common mistake while changing fluid and clutch that would cause this noise? I'm pretty sure it started suddenly.
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Also could be your throwout bearing... My brother installed a cheapie that came a w/ a oe parts store clutch and its loud now. (we didn't know better) push the clutch in and it shuts up. Trick is to get the $50 one from mazda.
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I can do gearbox work. Not a lot of guys can do it at home, but I would still buy a healthy box for a daily once the old one broke every time, its not worth the hastle or money to pay someone to put a new set of bearings through it.
So yeah, what hustler said. Dann |
Originally Posted by skidude
(Post 730066)
Ever since I replaced my clutch and transmission fluid a couple months ago, my transmission has been whining. I'm using the Ford MTX fluid, and I put in an FM stage 1 clutch. Did I do something wrong or is the new fluid making it whine or something?
I can only hear it at low speeds, or when in neutral with the clutch out. It's not really loud, but I'm pretty sure it wasn't ever this loud before. This transmission has about 55k miles, and about 3k of those are turbo'd. Generally it only effects the box when in overrun, but if yours is badly out it could effect it all the time. |
align? I guess I would say no... How would I align them more than just putting the bolts in?
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does it sound like this:
if not does it sound like an RC car motor, and if so, does it happen in 4th gear? |
Originally Posted by skidude
(Post 730066)
Ever since I replaced my clutch and transmission fluid a couple months ago, my transmission has been whining. I'm using the Ford MTX fluid, and I put in an FM stage 1 clutch. Did I do something wrong or is the new fluid making it whine or something?
I can only hear it at low speeds, or when in neutral with the clutch out. It's not really loud, but I'm pretty sure it wasn't ever this loud before. This transmission has about 55k miles, and about 3k of those are turbo'd. Bob |
Originally Posted by bbundy
(Post 730358)
The transmissions that I broke the drive gears for the secondary shaft all squealed shortly before they went. Think I've broke 3 of them like that. loos every gear but fourth. I think it is a bearing in the transmission that allows the shafts to separate a bit when it goes out and then the teeth break as they get more tip loaded.
Bob I broke one just like this. They will squeal and holler before they let go from bearing failure. I used a quart of lucas oil stabilizer, and a quart of their regular old gear oil, and mine shut up. This isn't conventional miata wisdom, but hey. |
Originally Posted by skidude
(Post 730352)
align? I guess I would say no... How would I align them more than just putting the bolts in?
How to do it is in the Miata manual Brain hosts in the useful saved posts area, it's very simple to do, just jack the tail of the box up to a certain height in relation to the frame rails. There's a large-ish tolerance but not enough to cover the tail dropped as far as it can attached to the PPF. |
Originally Posted by Braineack
(Post 730354)
does it sound like this:
if not does it sound like an RC car motor, and if so, does it happen in 4th gear? |
that noise was all because i failed to grease anything when i installed.
it's the sound of the TOB rattling on the fork. if the whine goes away in 4th gear, it's internals. |
What was I supposed to grease? I put some on the input shaft, but I think that's about it.
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yeah.
FSM shows the: Fork pivot joint Fork "fingers" where the TOB sits Input shaft TOB "guides" the hold to fork http://www.boostedmiata.com/gallery2...ase_points.jpg http://www.boostedmiata.com/gallery2...se_points1.jpg I have yet to grease the springs on the disc, but i see that as well. After doing those spots, I have no more clutch noise. |
Damnit. Pulling that shit off again is going to suck, especially just to grease it. At least this time the exhaust should be pretty easy to get undone.
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