How smooth should this be?
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How smooth should this be?
My car arrived at the dealership late yesterday and didn't make it through PDI but I went to take a look anyway. I started it up and expected butter smoothness from the engine but there was actually quite a bit of vibration feedback through the shifter and inside the car. Is this normal? Is it something to do with not being PDI'd (blocks in place, etc)? I have just heard of the legendary smoothness of this motor and honestly the v6 in my Jetta idles far smoother then what I experienced last night. I am going out today to check it out after PDI but thought the "rotorheads" would have some insight.
#4
Yes it does. Even in neutral you can see the shifter vibrate. As you shift the gears it vibrates. I guess this is normal for a rotatary.
One thing I notice is the clutch catches very high. Almost have to take your foot off before it does. Not sure if this is normal. Wonder if can be adjusted to catch at halfway.
One thing I notice is the clutch catches very high. Almost have to take your foot off before it does. Not sure if this is normal. Wonder if can be adjusted to catch at halfway.
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Originally posted by Wolfer
One thing I notice is the clutch catches very high. Almost have to take your foot off before it does. Not sure if this is normal. Wonder if can be adjusted to catch at halfway.
One thing I notice is the clutch catches very high. Almost have to take your foot off before it does. Not sure if this is normal. Wonder if can be adjusted to catch at halfway.
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Originally posted by alarabie
I have mine since Monday and there is some vibration at idle, you notice it in the shifter, but otherwise it's pretty smooth.
I have mine since Monday and there is some vibration at idle, you notice it in the shifter, but otherwise it's pretty smooth.
I ask this because I remember the engine in the Gen II RX-7 GTU I drove for a while liked to "hunt" a bit when first started (the idle would drop down to about 700 then pop back up to 1500 or so then back to 700 then back to 1500, etc.)
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On mine the idle speed looked to be around 900 or so and was holding fairly steady there. So it seems like this is normal which does seem somewhat odd since I have heard about the smoothness of the rotary.
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I have had my car since Monday. There is a little stick vibration when not engaged, I keep my hand on the stick while driving, sits there just right and I don't feel any vibration while driving. My clutch engages at about the halfway point and is fully engaged with about 2 inches left. Other that the stick at idle or in neutral, I feel no vibration at all. Checked oil after first tank, its rock solid on the full line and clean.
#10
Careful, I bite!
Very little vibration for me other than the previously acknowledged shifter.
In terms of the clutch, in my opinion it's actually better to have it engage higher. Higher engage means you don't have to travel as far to make it work. That means less time with the engine less than fully engaged, and also means that it's less likely the RPM will fall under where you want them to be for the next gear - in fact, they might be above where you want them to be, slightly dragging the car faster rather than slower.
In terms of the clutch, in my opinion it's actually better to have it engage higher. Higher engage means you don't have to travel as far to make it work. That means less time with the engine less than fully engaged, and also means that it's less likely the RPM will fall under where you want them to be for the next gear - in fact, they might be above where you want them to be, slightly dragging the car faster rather than slower.
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Originally posted by Chuck Clifford I keep my hand on the stick while driving[/B]
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Originally posted by BillK
I ask this because I remember the engine in the Gen II RX-7 GTU I drove for a while liked to "hunt" a bit when first started (the idle would drop down to about 700 then pop back up to 1500 or so then back to 700 then back to 1500, etc.)
I ask this because I remember the engine in the Gen II RX-7 GTU I drove for a while liked to "hunt" a bit when first started (the idle would drop down to about 700 then pop back up to 1500 or so then back to 700 then back to 1500, etc.)
-ss
#13
Son what is your Alibi?
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Yes the Shifter vibrates at Idle; it’s to a lesser degree after you’re in 2nd. The clutch does catch on right before you let off, its a very forgiving clutch I hadn't drive a clutch in a year nor a rotary and didn't stall it once, bogged down pretty well though. You tend not to notice the shifter vibration when you’re driving too.
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I'm not certain about this, but I think it has nothing to do with the rotary engine, but rather has to do with the linkage to the transmission. Most cars have cable linkages to the transmission, which reduces vibration but also gives a feeling that's described as "rubbery" or "vague" in magazine reviews. A benefit is that it doesn't transmit the vibration from the engine as well. A direct linkage with the transmission gives much better feel, but at the cost of vibration.
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Hey, I found some links. Check these out for some reading on a related transmission:
http://www.miataforum.com/cgi-bin/ul...c;f=6;t=009411
http://www.miataforum.com/cgi-bin/ul...c;f=6;t=007799
http://www.miataforum.com/cgi-bin/ul...c;f=6;t=013981
I love the Miata forum. Every question has already been asked. Too bad most of them are scared of rotaries.
http://www.miataforum.com/cgi-bin/ul...c;f=6;t=009411
http://www.miataforum.com/cgi-bin/ul...c;f=6;t=007799
http://www.miataforum.com/cgi-bin/ul...c;f=6;t=013981
I love the Miata forum. Every question has already been asked. Too bad most of them are scared of rotaries.
#17
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Originally posted by Lensman
Don't do this! It puts pressure on the gear selector mechanism and wears it out prematurely. It's as bad as resting your foot on the clutch pedal all the time.
Don't do this! It puts pressure on the gear selector mechanism and wears it out prematurely. It's as bad as resting your foot on the clutch pedal all the time.
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My idle is about 1000, my clutch engages very low almost to the floor, I have to be careful when I stop and clutch, if I'm nor all the way in it grabs a little bit. I really like it like that the gear changes are really quick.
#23
Careful, I bite!
Yep, resting your foot on the clutch or resting your hands on the gearshift are both bad for the mechanism - it creates slight amounts of friction that can slowly wear out the mechanisms. You may have heard of "riding the clutch", either way you're essentially doing the same thing. You're preventing the gears from being perfectly synchronized by slightly disengaging them from normal interaction. So instead of one gear being ready for its partner, there is a slight disconnect. The point when the gears retouch is where the wear happens.
FYI, older clutches used to also have the problem that you shouldn't keep the clutch fully depressed either, but newer clutches are able to completely separate the elements at this stage, eliminating the problem.
FYI, older clutches used to also have the problem that you shouldn't keep the clutch fully depressed either, but newer clutches are able to completely separate the elements at this stage, eliminating the problem.
Last edited by DisneyDestroyer; 07-17-2003 at 01:21 PM.
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Originally posted by 8_wannabe
Oh man, is this really true or just one of those purist beliefs? I've never heard resting your hand on the shifter is gonna wear things out. Keeping my hand there is the cool thing about driving stick. Do I really, really have to give this up to (along with compression/engine/trannie braking?)
Oh man, is this really true or just one of those purist beliefs? I've never heard resting your hand on the shifter is gonna wear things out. Keeping my hand there is the cool thing about driving stick. Do I really, really have to give this up to (along with compression/engine/trannie braking?)
#25
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Hehe glad to have started a side discussion Thanks for the answers on the vibration - makes sense with the transmission directly coupled to the engine.