Transmission Grinds

2004 MAZDA RX8
113,000 MILES • 1.3L • RWD • MANUAL
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WELDON RAY DAILY
When i shift at high rpm's in second gear only it grinds.
i have changed the transmission oil (amsoil).
Jun 25, 2016 at 9:13 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,520 POSTS
  • ASE Certified Mechanic
Hi Weldon

It sounds like you have a pilot bearing that is going out not allowing the input shaft to slow down enough to change gears causing the grinding you are talking about,, here is a guide that will show you what you are in for when replacing it. There is a slight possibility you have a transmission synchro that is worn out which is inside the transmission

Here are the guides

https://www.2carpros.com/articles/pilot-bearing-replacement

Let me know what you find

Best, Ken


Jun 27, 2016 at 10:30 AM
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