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Old 07 Jul 2008, 04:01 am
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Default I have a 2002 civic si.... when i speed shift from 1st to 2nd the gears grind. why is that??

thanks for the advise.... well i will have the clutch all the way to the floor slam it into second and still grinds with the clutch still to the floor......
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Old 07 Jul 2008, 04:16 am
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either youre not compressing the clutch properly or youre syncros are going bad.
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Old 07 Jul 2008, 04:31 am
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You are beating the syncros - in other words you are not giving the syncronizers enough time to match the speeds of the two gears.
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Old 07 Jul 2008, 04:46 am
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the syncros are definitely shot
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Old 07 Jul 2008, 05:01 am
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Your syncro mesh is worn out. You probably have bad driving habit of shifting too fast or not depressing the clutch deep enough. When the car is new you may not notice anything wrong. But give enough time and this will happen.I notice that lot of you stick shift driver have bad stick shift habits. And they teach each other these bad habits.Good Luck...
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Old 07 Jul 2008, 05:16 am
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THERE CAN BE A COUPLE OF REASONS1) YOUR SHIFTING TOO FAST2) YOUR CLUTCH IS GOING OUT3) SOUNDS LIKE A BAD PRESSURE PLATE
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Old 07 Jul 2008, 05:31 am
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I had an '04 Si(i bought new) and it did that with a regular shift from 1st to 2nd( i took care of that car like it was my mother but did have some fun with it like a Hunt's Point(Bronx) hooker). You're not keeping the clutch engaged long enough for that split second. If you're not using the clutch, stop now. Change the transmission fluid and if that doesnt solve the problem, kiss your synchros goodbye.
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Old 07 Jul 2008, 05:46 am
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Cars arent designed for speed shifting.Cars arent desingned for shifting without a clutch.Cars are designed to be driven normally, fully depressing the clutch, shifting at a normal speed and releasing the clutch. Road cars gearboxes are designed with syncro rings and helical cut gears, to shift slowly and smoothly.Why do you think that race cars have different gearboxes to road cars? Race gearboxes are made with straight cut gears and no syncro rings to enable them to be shifted with no clutch and shifted very fast.By the sounds of things, you have stuffed your syncro rings. As suggested, try draining your oil, and refilling with new oil. I doubt it will have any affect though.Your best option is to change your driving habits, or instal a gearbox that will handle constant abuse.
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Old 07 Jul 2008, 06:01 am
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FIRST: CMPUNK is wrong you can do this as long as you do it the right way. I have been street racing POS cars for some time. SECOND: you are not performing this the right way. There is about a 500 rpm difference per gear maybe a little more or less depending on the car. You must know your car before you start doing this. THIRD:Sounds like the syncros are definitely bad and you should have this looked at. Fourth: You have an SI and should have bought a Volkswagen GTI. Happy Dubbing
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Old 07 Jul 2008, 06:16 am
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Learn how to shift! Than you will not have to ask this question! If your sinsyncros are going out I'm sure it has something to do with you. Sorry! but its the brutal truth and the truth hurts sometimes.
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