Problems shifting, trans oil too thick?
#1
Hot Dicken's Cider
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Problems shifting, trans oil too thick?
I'm having some serious issues shifting at high RPMs. I have an OS Giken twin-plate clutch using a new OEM throwout bearing(I have heard that your supposed to use a Mazdaspeed TO bearing, but have also heard OEM works fine) and a Mazdaracing short throw shifter kit and ****. Brand new clutch master and slave cylinders with a braided clutch line. I'm using Valvoline gear oil(75 weight if I remember correctly, but it might be higher).
When I try to shift at 7000+ RPM, the shifter often will not go in the gate. This happens in 2nd, 3rd, and 4th. When it happens, it will not go in no matter how hard I pull on the shifter, but will go in after the revs drop to 5-6k.
A few older more experienced car nuts I know told me that I need to use a much lower viscosity oil in my trans, and the problem will clear up.
Does anyone have any experience with this problem? I've been running a high viscosity gear oil in my trans since I got it, and don't ever remember having this much of a problem.
When I try to shift at 7000+ RPM, the shifter often will not go in the gate. This happens in 2nd, 3rd, and 4th. When it happens, it will not go in no matter how hard I pull on the shifter, but will go in after the revs drop to 5-6k.
A few older more experienced car nuts I know told me that I need to use a much lower viscosity oil in my trans, and the problem will clear up.
Does anyone have any experience with this problem? I've been running a high viscosity gear oil in my trans since I got it, and don't ever remember having this much of a problem.
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I've started to have shifting problems. Of course the clutch pedal is causing the clutch to engage pretty low to the floor. Acouple of day's ago it actually died at a stop sign and then refused to go into first (or any gear), afterI restarted. Luckily I was on a slight down grade and when I started coasting to the side of the road, it allowed me to slip it into first.
I know *little* about clutches and transmissions. It has a Act 6-puck clutch. I'm going to put it on stands and crawl under to take a look next week.
What is there to check and adjust? Anyone have thoughts that might help direct my looking? Are there any forums or web sites where I might find information?
I know *little* about clutches and transmissions. It has a Act 6-puck clutch. I'm going to put it on stands and crawl under to take a look next week.
What is there to check and adjust? Anyone have thoughts that might help direct my looking? Are there any forums or web sites where I might find information?
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Originally Posted by john ward
i had a 1st and second gear problem and used gm syncromesh and all is fine now
Will switching to a lighter weight oil hurt anything?
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#8
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I use royal purple 75 90 in my na, it cleared up all the notchyness I once had. Check if there is any play in your shifter. (i.e. can you move it up and down) Worn shifter bushings are a possibility even it your shifter is fairly new. If there is no play in the shifter and synthetic gear oil doesn't clear up your problem then a rebuild is your only solution.
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