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Discussion Starter #1
I have a 97 itr and just recently rebuilt the motor. The car is pretty low and I'm going to be raising its tomorrow to hopefully solve the issue, but whats going on is that when I'm accelerating, doesn't matter what speed I'm going (can be going from dead stop or 80km/hr) my entire dash shakes side to side to the point where its hard to read the speedo...(this means the whole dash, mainly the upper dash from what it looks like) When the engine was out the engine mounts were inspected and all were good to go, the front torque mounts were shot and those have been replaced. The shaking happens in any gear ,but you do not feel it throughout the car, its only the dash thats shakes out of control. The harder you accelerate the worse it gets. Its getting to the point where I dont want to drive it and the latest shop I've taken it to didnt help.
 

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What mounts do you have installed? The stiffer they are the stronger the vibration is going to be. Also, if your tires are out of balance or if the rims are bent you may also feel the vibration. Any recent accidents that involved undercarriage damage? If so, reinspect suspension components and replace as needed.
 

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Out of balance wheels is probably not it since he said it happens from a complete stop all the way to 80 kph. Something not tighten down all the way (motor mount bolts, torn new mount), blown coilovers will shake the crap out of you too sometimes at a stop.

To what extent did you rebuild the motor? (gasket refresh, top end rebuild, long block rebuild, etc.)
As Built_not_bought already asked, what kind of engine mounts are you using?
What suspension are you using (lowering springs, coilovers (what brand), etc.)
Manual or automatic? (possible something is out of wack with the torque converter if auto)

could also be that something above finally loosened up some dash bolts/screws and now it's just more visible.
 

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Discussion Starter #4
Thanks for the replies, engine had a complete rebuild, bored to 81.25, new pistons rings, crankshaft balance and polished, the works basically. I just have the stock honda motor mounts, engine mounts looked good, had them inspected. The torque mounts were blown so I swapped those out yesterday. Im using tein flex coilovers and I'm extremely low, less than a fingers width from the fender to tire. Im lifting the car tonight after work to have at least a thumbs width between the fender and tire. Another thing to note is that both axles have been replaced prior to me having it and they look to be the cheapo after market ones. Im starting to think that the issue has to do with my axles. Ive bought new Cardone axles and should have those in next week. I recently tried reaching under the car and grabbing each of the axles and trying to see if there is any play, and there is some, I can easily twist each axle a couple degrees either way. Maybe that's the issue? Will update as I check and replace things on the car.
 

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One other item to check are the dash connections to the vehicle on each end of the dash when you open the doors there are screws that hold it sometimes those tabs beak and make your dash lose. There’s connections in the rear as well and right behind your hazard button and defroster. Especially if you have a real low car with all those vibrations year after year they are bound to break.
 

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What mounts do you have installed? The stiffer they are the stronger the vibration is going to be. Also, if your tires are out of balance or if the rims are bent you may also feel the vibration. Any recent accidents that involved undercarriage damage? If so, reinspect suspension components and replace as needed.

Like he said what mounts did you buy? I did aftermarket mounts on my ep3 and it vibrates a lot more at idle and in general. Although it tends to smooth out under acceleration. The harder the mount, the more transfer of vibration gets sent to the rest of the car.
 

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Discussion Starter #7
Hey guys, so I know its been a little while since I got back to you but I've FINALLY figured out my vibration on acceleration and it definitely an overlooked item hahah. So after doing everything I stated up top, I also replaced the inner and outer tie rods on either side. That seemed to solve my issue until I drove the car for a week or two and the vibration came back. So I took the car to get the tired balanced and the technician started asking me where I bought my wheels. I have a pair of Buddy Club P1's on the car ever since I bought it and never thought the problem would be them as I had put brand new tires on them. Well turns out my vibration was coming from the fact that my wheels didn't come with Hub Centric Rings.... Just had them installed today and went for a rip.... Vibration completely gone, I still get a little bit of torque steer but thats common. So if anyone is having a vibration issue (movement from side to side, left and right, more of a shimmy than a vibration) have a look at your wheels and where they connect to your hub. Thanks for the help, 4 and a half years later and I've finally fixed it!!!!! Cheers!
 
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outlaw001
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