Manual transmission issues
#1
Manual transmission issues
So I replaced my clutch/flywheel etc. with the kit from import parts pro about 3500 miles ago. I did the install myself with some help from a couple friends of mine. Everything went smooth. Well ever since I replaced the clutch It's been a little hard to get it into each gear. It's not grinding at all. So I assumed it wasn't the syncros going bad. (I know i shouldnt assume) I also replaced the master cylinder and slave cylinder about 1000 miles ago with the same results. I've bled the clutch numerous times and adjusted the shifter and clutch pedal about 10 times. I never got around to putting the stainless line in because the screw on the fender it attaches is stripped out. (I used a box wrench 10mm instead of a flare nut wrench) so my question is where do I start to try and fix this problem? I'm out of ideas. I had a friend of mine tell me that I could have a faulty throwout bearing or pilot bushing. Oh and when I replaced the oem clutch it wasn't worn out. It wasn't even close to hitting the rivets yet. I just wanted to start at the drive train because i plan to spray nitrous if I can ever get this problem sorted out.
I drive an 06 6mt 350z enthusiast with 95k miles
Any help would be greatly appreciated
I drive an 06 6mt 350z enthusiast with 95k miles
Any help would be greatly appreciated
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#10
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Redline MT-85. Do you still have the bottle for the old fluid you put in? Many gear oils come in both GL-4 and GL-5. The pennzoil syn 75w-90 definitely comes in both GL-4 and GL-5, so I would not get your hopes up on this being the fix.
edit: I googled the Valv. synpower 75-90 you were using it it is in fact GL-5 only, so maybe it will be as easy as just changing out the fluid. Good luck!
edit: I googled the Valv. synpower 75-90 you were using it it is in fact GL-5 only, so maybe it will be as easy as just changing out the fluid. Good luck!
Last edited by SlowNFurious; 12-04-2012 at 05:07 AM.
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Also, are you using an aftermarket short throw shifter?
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I've always wondered about Pennzoil Synchromesh fluid. I must have a million posts spreading the word about Redline MT-85 and Nissan MTF as good fluids to use. Let us know how that works for you! Also, did you do your clutch job with a set of jackstands or on a lift? That must have been fun!
#17
I actually am good friends with the manager of a local oil change place that I used to work at. So I used one of their bays for about 5 hours lol the transmission only weighs about 90-100 lbs which was very surprising. It's just awkward weight. If I end up removing the transmission again then ill do it on jack stands and use a little transmission jack.
#18
So I replaced the fluid with synchromesh today and Its 1000 times better so better. I'm hoping it'll get a little bit smoother after the fluid gets hot a couple times and coats everything again. I guess I need to drive another 350z or g35 around here and see how there's feels before doing anything else.
#19
You do realize that when you drain and fill you only end up getting like 3.5 quarts and I think the tranny holds like 9 quarts or more. You will need to do 3 fluid swaps (drain and fill) to end up with 93% new fluid. It is typically when you steer away from OEM fluid that you run into issues with the gear box. I would drive it for a 3 days and then drain and fill it again with OEM fluid and do it a third and final time. That is a cheap fix and should take care of most of your issues.
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You do realize that when you drain and fill you only end up getting like 3.5 quarts and I think the tranny holds like 9 quarts or more. You will need to do 3 fluid swaps (drain and fill) to end up with 93% new fluid. It is typically when you steer away from OEM fluid that you run into issues with the gear box. I would drive it for a 3 days and then drain and fill it again with OEM fluid and do it a third and final time. That is a cheap fix and should take care of most of your issues.