Gearshift moving all over the place with the engine throw...
04-19-2007, 06:32 AM
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Gearshift moving all over the place with the engine throw...
Hi guys i'm new here and was wondering if someone can help me out. I recently bought my Rx8 and since i've had it it's always done this.. is it normal?
While driving around, when changing gears, the whole gearshift area seems to move with the engine movement. If the engine is thrown back, while holding the gearshift, i can really feel the engine movement through the gearshift. If for example i brake hard, and wedge my hand between the gearshift and the front dash, i can feel the gearshift pushing on my hand while braking... isn't it meant to be 100% totally still? Also when i take hard left and right turns, i feel the gearshift fighting to stay still and instead is forced slightly to the opposite direction to the turn. Basically it feels like there's a transmission mount about to go but that's how it's felt since day 1.
When i complained to my dealership they said that all rotary engines do this but then i came across an article on-line (which i cant seem to find anymore) and someone who's driven a lot of Rx8s was told the same thing by the dealer but unlike me since he knew better he was able to put them right.
If anyone knows anything please help me out since car is still on warantee and dont want to pay for any oem factory damage
Thanx
p.s. a 'better' description would be "i've got a belly dancin gearshift!!!"
While driving around, when changing gears, the whole gearshift area seems to move with the engine movement. If the engine is thrown back, while holding the gearshift, i can really feel the engine movement through the gearshift. If for example i brake hard, and wedge my hand between the gearshift and the front dash, i can feel the gearshift pushing on my hand while braking... isn't it meant to be 100% totally still? Also when i take hard left and right turns, i feel the gearshift fighting to stay still and instead is forced slightly to the opposite direction to the turn. Basically it feels like there's a transmission mount about to go but that's how it's felt since day 1.
When i complained to my dealership they said that all rotary engines do this but then i came across an article on-line (which i cant seem to find anymore) and someone who's driven a lot of Rx8s was told the same thing by the dealer but unlike me since he knew better he was able to put them right.
If anyone knows anything please help me out since car is still on warantee and dont want to pay for any oem factory damage
Thanx
p.s. a 'better' description would be "i've got a belly dancin gearshift!!!"
04-19-2007, 07:31 AM
#2
Extraordinary Engineering
The engine and transmission sit on isolation mounts and will move around relative to the car interior. The only issue that can cause excessive vibration and movement is a bad motor mount. So some questions.
What year is your car?
Did you buy it new?
How is your idle?
What year is your car?
Did you buy it new?
How is your idle?
04-19-2007, 09:06 AM
#4
Extraordinary Engineering
So far it sounds very normal.
When I was installing my AFE short shifter I had to remove all of the plastic covers and rubber seals in the centre console. At that point what you see is the transmission with the pavement below. The shifter literally bolts into the top of the transmission so you don't get the isolation typical in other cars, especially FWD cars. Don't worry, be happy.
When I was installing my AFE short shifter I had to remove all of the plastic covers and rubber seals in the centre console. At that point what you see is the transmission with the pavement below. The shifter literally bolts into the top of the transmission so you don't get the isolation typical in other cars, especially FWD cars. Don't worry, be happy.
04-19-2007, 04:18 PM
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Originally Posted by abbid
If you put it in gear and slam the gas, does the shifter move UP at all? or just forward or backward[depending on which gear]
04-19-2007, 04:21 PM
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When driving the car hard on second gear (while it's in its sweet spot), when i let go of the gas the engine movement is nuts! it jerks the car forwards and back. Is this how the normal mounts react? should I mention it to my dealer or is it a matter of upgrading the mounts to aftermarket ones?
04-20-2007, 05:45 AM
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Originally Posted by nycgps
Its normal, unless its shaking so badly that it starting to look like a snake.
Anyone done this upgrade? is it really worth it? and where can i get good engine mounts (sorry still a novice with my car as far as tuning parts)?
04-24-2007, 05:53 PM
#13
Power!!
There is a TSB on worn motor mounts. If you're still in warranty bring it in and ask them to check out your mounts. Second thought it to make sure your Power Plant Frame is on properly and tightened. It connects the back of the transmission to the differential.
Again if you're in warranty bring it to the dealer with the TSB for the motor mounts and see what they say.
You can search on it and find them on this forum.
Again if you're in warranty bring it to the dealer with the TSB for the motor mounts and see what they say.
You can search on it and find them on this forum.
04-24-2007, 06:29 PM
#14
mine doesn't do that, and I have one of the highest output NA engines here ... 
and FWIW, the entire drivetrain is suspended on the chassis by only the two motor mounts at the front and two differential mounts at the rear. There are no trans mounts on an RX-8. The trans bolts to the motor and is then bolted to the differential via the PPF (power plant frame) to form one rigid assembly.
and FWIW, the entire drivetrain is suspended on the chassis by only the two motor mounts at the front and two differential mounts at the rear. There are no trans mounts on an RX-8. The trans bolts to the motor and is then bolted to the differential via the PPF (power plant frame) to form one rigid assembly.
Last edited by TeamRX8; 04-24-2007 at 06:32 PM.
04-25-2007, 03:05 AM
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Originally Posted by shaunv74
There is a TSB on worn motor mounts. If you're still in warranty bring it in and ask them to check out your mounts. Second thought it to make sure your Power Plant Frame is on properly and tightened. It connects the back of the transmission to the differential.
Again if you're in warranty bring it to the dealer with the TSB for the motor mounts and see what they say.
You can search on it and find them on this forum.
Again if you're in warranty bring it to the dealer with the TSB for the motor mounts and see what they say.
You can search on it and find them on this forum.
04-25-2007, 03:07 AM
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Originally Posted by TeamRX8
mine doesn't do that, and I have one of the highest output NA engines here ...
and FWIW, the entire drivetrain is suspended on the chassis by only the two motor mounts at the front and two differential mounts at the rear. There are no trans mounts on an RX-8. The trans bolts to the motor and is then bolted to the differential via the PPF (power plant frame) to form one rigid assembly.
and FWIW, the entire drivetrain is suspended on the chassis by only the two motor mounts at the front and two differential mounts at the rear. There are no trans mounts on an RX-8. The trans bolts to the motor and is then bolted to the differential via the PPF (power plant frame) to form one rigid assembly.
04-25-2007, 03:42 AM
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04-25-2007, 01:17 PM
#18
Power!!
^^Yup. There's a sticky with a link to that site to get all our TSBs. It's a good read. I would take a look at all of them and see if you car does any of those things. Then bring it in with a stack of TSBs and get them all fixed...under warranty.
04-25-2007, 01:18 PM
#19
Power!!
Originally Posted by TeamRX8
The trans bolts to the motor and is then bolted to the differential via the PPF (power plant frame) to form one rigid assembly.
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