Grand Moff Joseph Posted April 25, 2005 Report Posted April 25, 2005 I'm sure this has been asked before, and I did try the search function, but came up empty on useful information, so here goes. I just installed FFP dogbones on my 3.1 Lumina yesterday. First of all, let me say that the difference in power delivery and shifting is awesome! Great job FFP! Now, the only problem is, my car now rattles and vibrates like a mofo. At speed, or when out of gear, it sounds fine, with maybe just a little louder tone to it. But, when I am idling (in gear), or coming to a stop, the whole car shakes and vibrates so bad, you would think I have a rattle can attached to the car somewhere. I have the dogbones installed properly, and torques to 50 ft/lbs of torque. Did I mess something up, or is this indicative of any sort of probleme with my car? Thanx for the help! Quote
5speedz34 Posted April 25, 2005 Report Posted April 25, 2005 When we put them on my friends '93 Cutty, it did the same thing. The car will always vibrate more then stock, but it should quiet down after a few days of breaking in. Quote
Grand Moff Joseph Posted April 25, 2005 Author Report Posted April 25, 2005 When we put them on my friends '93 Cutty, it did the same thing. The car will always vibrate more then stock, but it should quiet down after a few days of breaking in. OK, but is the extra vibration really noticeable after the new bones break in? In other words, will the car always sound like a rattle can when idling in gear? Quote
digitaloutsider Posted April 25, 2005 Report Posted April 25, 2005 It'll slowly go away. It won't ever be near as smooth as the shitty rubber ones, though. Quote
Grand Moff Joseph Posted April 25, 2005 Author Report Posted April 25, 2005 is there anyway to speed up the breaking in process? Quote
digitaloutsider Posted April 25, 2005 Report Posted April 25, 2005 [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] Actually, I don't know. Quote
Grand Moff Joseph Posted April 25, 2005 Author Report Posted April 25, 2005 wow, that was a lot of help... So, I guess the best thing to do is to let it work itself out then...right? Quote
Grand Moff Joseph Posted April 25, 2005 Author Report Posted April 25, 2005 OK, sounds good. Thanks for the help! Quote
5speedz34 Posted April 25, 2005 Report Posted April 25, 2005 How old are you're lower mounts, if you wanted to replace all of those that would help soften it up. I put new mounts on my Z34 and then put the FFP dogbone, and all I could tell was the steering wheel vibrate a little. Quote
Grand Moff Joseph Posted April 25, 2005 Author Report Posted April 25, 2005 lower mounts are original to the car. How costly/time consuming is it to replace, and how much are the mounts? Quote
5speedz34 Posted April 25, 2005 Report Posted April 25, 2005 Alot to do it. Drop the Cradle and replace them all is the easiest IMO, theres alot of ways to do it though. Quote
5speedz34 Posted April 25, 2005 Report Posted April 25, 2005 Well you'll have to drop the front frame to do it, that's the way I would do it. I think some guys have jacked the motor up enough to take stress off the mounts and gotten to them like that to replace them. I would just drop the cradle, then you can replace stuff at the same time too. Quote
90TGP Posted April 25, 2005 Report Posted April 25, 2005 Yeah, it'll take about a week and a half of daily driving for the vibrations to subside. Quote
Stevo Posted April 25, 2005 Report Posted April 25, 2005 [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] [vroom] [screech] Actually, I don't know. ROFL!!!! ahahaa .... too funny. Remember the tighter the mounts the less vibration dampening you will have. But when they are very loose it tends to buck on shift and initial acceleration. Quote
maybe2fast Posted April 25, 2005 Report Posted April 25, 2005 the lower mount is probably bad, the liquid filled one, it has a metal bar as a fall safe and when the mount is bad the metal on metal contact vibrates bad Quote
digitaloutsider Posted April 25, 2005 Report Posted April 25, 2005 I hated changing that piece of shit. UGH. What a mess. Quote
maybe2fast Posted April 25, 2005 Report Posted April 25, 2005 I hated changing that piece of shit. UGH. What a mess. the worst, mine was not even there, just the oil and the metal cross member Quote
GTPrix Posted April 25, 2005 Report Posted April 25, 2005 The vibrations never went away in my cutty. It did get better, however I think I just learned to live with it. Drew Quote
digitaloutsider Posted April 25, 2005 Report Posted April 25, 2005 I hated changing that piece of shit. UGH. What a mess. the worst, mine was not even there, just the oil and the metal cross member Exactly. Quote
Grand Moff Joseph Posted April 25, 2005 Author Report Posted April 25, 2005 Well, the vibration has settled down a little bit today, and I noticed that the bushings on the new dogbones have begun to expanbd outwards a bit, whereas they were flush with the edge of the bone when first installed. I take that to mean that they are beginning to adjust themselves. Also, on those lowe mounts, I had been feeling some hard thuds from the engine bay when accelerating hard, or when hitting bad bumps. Should I get the lower mounts checked out, and if they are bad. how much do you think a dealership would charge to replace them? Quote
digitaloutsider Posted April 25, 2005 Report Posted April 25, 2005 Oh man, I couldn't begin imagine what a stealership would charge for that.. Quote
Euro Posted April 25, 2005 Report Posted April 25, 2005 haha EXACT same problem when i put mine on. it was so bad it shook change in my console...and my maglite in my glovebox(what a bitch that was...f-ing annoying!!!) i just took them off before it shook something important loose. that was almost a year ago....still havent gotten the lower mounts replaced..... anybody who had it done...or did it,how much did it cost? Quote
digitaloutsider Posted April 25, 2005 Report Posted April 25, 2005 It's like $50 for the mount if you do it yourself. Really, it isn't that bad of a job. Quote
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