Quote:
Originally Posted by Ebush
Did you not cut and hammer on the transmission mount bracket? If not then that’s your problem. Anyone using the stock trans needed to hammer that bracket in quite a bit for clearance. I feel like I went further than most on my first go at it. But I recently pulled everything out and pushed that trans mount bracket in further. It’s hard to see, but the trans has a small section that extends into the area that was hammered. I believe that even if there is an 1/8” clearance that we may still get some occasional vibrations from it. The stock Impreza mounts aren’t very good. I don’t understand why kpower went this route. I had Perrin mounts with my fa20, they nearly worked for this swap but I didn’t feel like modifying them, so I sold them.
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Yes I hammered the chassis, and I used a grinder on part of the transmission that could make contact. There is a quarter inch gap at least, and it isn’t the cause of the vibration for me. Like I said, I’ve been under the car when it is running and nothing is touching. The vibrations wouldn’t disappear at a 1400 rpm idle if it was touching. I don’t really get chassis contact driving. I know that now. It is more engine. It could be some driveshaft when driving. I just have no way to tell, but I’m leaning more to the engine.
My solutions are the fuel pulse damper, which I want anyways, the Fluidampr damper, which I want anyways, and the clutched alternator pulley, which I want anyways. If those don’t do it with tuning then I’ll triple check my timing chain hasn’t jumped a cog, but my suspicion is low for this.