Wtf? (1.6 VLSD failsauce bulltrash)
12-09-2009, 11:28 PM
#1
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Wtf? (1.6 VLSD failsauce bulltrash)
Recently, I've noticed that getting on the gas while turning causes the engine to rev but the car to not move. Basically like a slipping clutch. I'm damn near certain its not a slipping clutch because this doesn't happen in a straight line(that I've noticed, I should really pay more attention to **** like this). Its always wayyy worse on cold mornings. It seems like it catches, like if I had slightly disengaged the clutch then dropped it.
Now I know that the 1.6 VLSD is a piece of **** and turns into an open diff in real short order, but it's been a while since I've driven a completely open diff car. I don't remember my first open diff Miata doing **** like this, but then again I drove that car way differently since I was barely 16 at the time.
Is this just my VLSD being toast? It would really suck to know that out of nowhere my clutch with 5k miles on it is slipping. The only thing that's leading me to think about this being the diff is the fact that I autox'd my high school auto shops car, and it was doing the same thing. My teacher put some shims in the diff and he said the problem was gone when he drove it at the next one.
Opinions/suggestions/**** talking?
Now I know that the 1.6 VLSD is a piece of **** and turns into an open diff in real short order, but it's been a while since I've driven a completely open diff car. I don't remember my first open diff Miata doing **** like this, but then again I drove that car way differently since I was barely 16 at the time.
Is this just my VLSD being toast? It would really suck to know that out of nowhere my clutch with 5k miles on it is slipping. The only thing that's leading me to think about this being the diff is the fact that I autox'd my high school auto shops car, and it was doing the same thing. My teacher put some shims in the diff and he said the problem was gone when he drove it at the next one.
Opinions/suggestions/**** talking?
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12-09-2009, 11:38 PM
#3
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I'm saying I don't think its the clutch because this doesn't happen in a straight line. My question is basically do normal open diffs do the same thing?
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12-09-2009, 11:42 PM
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Yea, I want a torsen but I don't have the funds for one right now really.
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12-10-2009, 01:42 AM
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Back up a second.
Let's forget for a moment that 1.6 R&Ps are fragile and stock VLSDs are weaksauce.
You step on the gas and the RPMs increase but the car does not accelerate... I'm assuming that this is not accompanied by one wheel spinning- correct? If that's the case, then it doesn't matter if the VLSD has reverted to fully open status. There's no way for slippage of the differental unit itself to allow the engine to speed up without at least one of the two wheels also speeding up.
And then there's the R&P. If it were metal salad, you'd know it. As in: car doesn't move at all, or makes horrible grinding sounds. R&P gears don't slip. They either move in a fixed relationship, or they're chunky salsa.
Either you're spinning one wheel, or your clutch is slipping. Diffs aren't nearly this subtle.
Let's forget for a moment that 1.6 R&Ps are fragile and stock VLSDs are weaksauce.
You step on the gas and the RPMs increase but the car does not accelerate... I'm assuming that this is not accompanied by one wheel spinning- correct? If that's the case, then it doesn't matter if the VLSD has reverted to fully open status. There's no way for slippage of the differental unit itself to allow the engine to speed up without at least one of the two wheels also speeding up.
And then there's the R&P. If it were metal salad, you'd know it. As in: car doesn't move at all, or makes horrible grinding sounds. R&P gears don't slip. They either move in a fixed relationship, or they're chunky salsa.
Either you're spinning one wheel, or your clutch is slipping. Diffs aren't nearly this subtle.
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12-10-2009, 04:15 AM
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Back up a second.
Let's forget for a moment that 1.6 R&Ps are fragile and stock VLSDs are weaksauce.
You step on the gas and the RPMs increase but the car does not accelerate... I'm assuming that this is not accompanied by one wheel spinning- correct? If that's the case, then it doesn't matter if the VLSD has reverted to fully open status. There's no way for slippage of the differental unit itself to allow the engine to speed up without at least one of the two wheels also speeding up.
And then there's the R&P. If it were metal salad, you'd know it. As in: car doesn't move at all, or makes horrible grinding sounds. R&P gears don't slip. They either move in a fixed relationship, or they're chunky salsa.
Either you're spinning one wheel, or your clutch is slipping. Diffs aren't nearly this subtle.
Let's forget for a moment that 1.6 R&Ps are fragile and stock VLSDs are weaksauce.
You step on the gas and the RPMs increase but the car does not accelerate... I'm assuming that this is not accompanied by one wheel spinning- correct? If that's the case, then it doesn't matter if the VLSD has reverted to fully open status. There's no way for slippage of the differental unit itself to allow the engine to speed up without at least one of the two wheels also speeding up.
And then there's the R&P. If it were metal salad, you'd know it. As in: car doesn't move at all, or makes horrible grinding sounds. R&P gears don't slip. They either move in a fixed relationship, or they're chunky salsa.
Either you're spinning one wheel, or your clutch is slipping. Diffs aren't nearly this subtle.
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12-10-2009, 08:42 AM
#13
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However, the diff would not be the cause of your issues.
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12-10-2009, 09:08 AM
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Back up a second.
Let's forget for a moment that 1.6 R&Ps are fragile and stock VLSDs are weaksauce.
You step on the gas and the RPMs increase but the car does not accelerate... I'm assuming that this is not accompanied by one wheel spinning- correct? If that's the case, then it doesn't matter if the VLSD has reverted to fully open status. There's no way for slippage of the differental unit itself to allow the engine to speed up without at least one of the two wheels also speeding up.
And then there's the R&P. If it were metal salad, you'd know it. As in: car doesn't move at all, or makes horrible grinding sounds. R&P gears don't slip. They either move in a fixed relationship, or they're chunky salsa.
Either you're spinning one wheel, or your clutch is slipping. Diffs aren't nearly this subtle.
Let's forget for a moment that 1.6 R&Ps are fragile and stock VLSDs are weaksauce.
You step on the gas and the RPMs increase but the car does not accelerate... I'm assuming that this is not accompanied by one wheel spinning- correct? If that's the case, then it doesn't matter if the VLSD has reverted to fully open status. There's no way for slippage of the differental unit itself to allow the engine to speed up without at least one of the two wheels also speeding up.
And then there's the R&P. If it were metal salad, you'd know it. As in: car doesn't move at all, or makes horrible grinding sounds. R&P gears don't slip. They either move in a fixed relationship, or they're chunky salsa.
Either you're spinning one wheel, or your clutch is slipping. Diffs aren't nearly this subtle.
Thats the only thing that seems possible since my clutch isn't slipping. This whole thing causes some strange jerking when I corner hard and I'm on the gas, somewhat like quickly throttling in mid corner.
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12-10-2009, 11:21 AM
#15
When my diff went....it went. There was no "slipping" There was working, and then there was completely ******* broken. No real "in between"
The gears ground into paste...and didn't allow **** to turn. I had "roaring" from the rear end for ~8 hours of driving prior to the final "break" but I assume that was slightly less-pasty gears becoming more pasty and obliterated as I accelerated.
Sounds like clutch is slipping or Perhaps you are spinning out on the corners?
l2drive, l2observe ;p
Strange jerking when you "corner hard and on the gas" sounds like baby dorifto?
The gears ground into paste...and didn't allow **** to turn. I had "roaring" from the rear end for ~8 hours of driving prior to the final "break" but I assume that was slightly less-pasty gears becoming more pasty and obliterated as I accelerated.
Sounds like clutch is slipping or Perhaps you are spinning out on the corners?
l2drive, l2observe ;p
Strange jerking when you "corner hard and on the gas" sounds like baby dorifto?
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12-10-2009, 11:40 AM
#16
If it quacks like a duck ... your clutch is toast. After all it is a wear item and old as ****.
The diff being bad is about as likely to cause this problem as an exhaust leak is.
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12-10-2009, 12:58 PM
#17
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Seriously though, I'm not sure I'm following your train of thought here. When you round a bend, yes, one wheel turns faster than the other. That's the whole point of having a diff in the first place.
However, if the RPMs are going up so much that you can actually notice it on the tach, this is more than just normal differential action. You'd need to have a wheel actually spinning, and by this I mean sphincter-puckering "Oh God, I'm going to hit the wall" sort of spinning.
Thats the only thing that seems possible since my clutch isn't slipping.
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12-10-2009, 01:45 PM
#19
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You are a bad stick driver, but Hustler forgives you.
Seriously though, I'm not sure I'm following your train of thought here. When you round a bend, yes, one wheel turns faster than the other. That's the whole point of having a diff in the first place.
However, if the RPMs are going up so much that you can actually notice it on the tach, this is more than just normal differential action. You'd need to have a wheel actually spinning, and by this I mean sphincter-puckering "Oh God, I'm going to hit the wall" sort of spinning.
Well, that's a relief. For a moment, I thought we'd definitively diagnosed a slipping clutch. It certainly seemed like a slipping clutch, what with the slipping behavior and all.
Seriously though, I'm not sure I'm following your train of thought here. When you round a bend, yes, one wheel turns faster than the other. That's the whole point of having a diff in the first place.
However, if the RPMs are going up so much that you can actually notice it on the tach, this is more than just normal differential action. You'd need to have a wheel actually spinning, and by this I mean sphincter-puckering "Oh God, I'm going to hit the wall" sort of spinning.
Well, that's a relief. For a moment, I thought we'd definitively diagnosed a slipping clutch. It certainly seemed like a slipping clutch, what with the slipping behavior and all.
I'm not saying my diff is broken as in I can't drive the car guys. I mean the "viscous" function of it is toast. I know the difference between a working diff and a blown diff, I'm not a complete idiot.
I'll **** around with this on my way to the parts store later on and see what I find.
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12-10-2009, 01:49 PM
#20
I'm not doing smoky burnouts here. And its not my stick driving because it happens with my foot nowhere near the clutch pedal.
I'm not saying my diff is broken as in I can't drive the car guys. I mean the "viscous" function of it is toast. I know the difference between a working diff and a blown diff, I'm not a complete idiot.
I'll **** around with this on my way to the parts store later on and see what I find.
I'm not saying my diff is broken as in I can't drive the car guys. I mean the "viscous" function of it is toast. I know the difference between a working diff and a blown diff, I'm not a complete idiot.
I'll **** around with this on my way to the parts store later on and see what I find.
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