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Drivetrain
Clutch Fork Geometry Question
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<blockquote data-quote="Terrorist 5.0" data-source="post: 1563771" data-attributes="member: 30689"><p>Today, I finally had the time to finish the car, and I am happy to say my issue is almost completely eliminated! The clutch still grabs closer to the floor, just a little higher than before as I dialed in my preload. I measured my clutch stack up and after comparing the numbers, my setup was in spec. I put it together and used more grease this time. I dialed in my preload by feel, although I measured it after to check. With about an inch to an inch and a half of “free play” at the pedal, and the throw out bearing firmly against the pressure plate and spinning at the same speed, it comes to about 8 and a half pounds of preload, give or take a pound before the fork begins to move.</p><p></p><p>While I was under the car, I did notice one of the pressure plate fingers was just barely too low compared to the others, maybe a quarter of a millimeter. I don’t think this is enough to cause vibrations, but I could be wrong. I will come back if I run into any issues, although I am hoping I won’t, not only because I don’t want to pull a transmission on the ground again, but because my apartment complex is not too happy with me. Oh well. Thanks to everyone who took the time to post anything that could help.</p><p></p><p>All in all, I don’t think my throw out bearing was the issue, rather a lack of grease. I may have done all this work (taking my transmission back out) for nothing, as I could have tried adding grease before, but live and learn. Hopefully, anyone who has a vibrating clutch fork (a lot of people judging by how many forum posts there are about it) sees this post and is able to fix their problem using information in this post.</p></blockquote><p></p>
[QUOTE="Terrorist 5.0, post: 1563771, member: 30689"] Today, I finally had the time to finish the car, and I am happy to say my issue is almost completely eliminated! The clutch still grabs closer to the floor, just a little higher than before as I dialed in my preload. I measured my clutch stack up and after comparing the numbers, my setup was in spec. I put it together and used more grease this time. I dialed in my preload by feel, although I measured it after to check. With about an inch to an inch and a half of “free play” at the pedal, and the throw out bearing firmly against the pressure plate and spinning at the same speed, it comes to about 8 and a half pounds of preload, give or take a pound before the fork begins to move. While I was under the car, I did notice one of the pressure plate fingers was just barely too low compared to the others, maybe a quarter of a millimeter. I don’t think this is enough to cause vibrations, but I could be wrong. I will come back if I run into any issues, although I am hoping I won’t, not only because I don’t want to pull a transmission on the ground again, but because my apartment complex is not too happy with me. Oh well. Thanks to everyone who took the time to post anything that could help. All in all, I don’t think my throw out bearing was the issue, rather a lack of grease. I may have done all this work (taking my transmission back out) for nothing, as I could have tried adding grease before, but live and learn. Hopefully, anyone who has a vibrating clutch fork (a lot of people judging by how many forum posts there are about it) sees this post and is able to fix their problem using information in this post. [/QUOTE]
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