Date: Wed, 27 Aug 2003 22:46:14 +0100
From: Grunff <>
Subject: Re: crack in gearbox case & vibration between 140 and 150 mph (230-240 km/h)

Simon Putz wrote: > i have that 2 problems i already mentioned in the topic with my MY90 9000T, > the biggest one of them is that i have a crack in the gearbox case rightt here > where the two halves meet each other, at the differential. any idea on what i could do? > welding is not really possible i guess and nothing else would stay there given the > vibrations, heat and the oil pushing from above, but if someone has any other idea, please tell me. > right now ill stay with refilling about 1 liter of oil every 4 weeks :( Either weld it up (remove, drain, cleanup, weld, refit), or get a replacement. > and the second problem is that after replacing both front wheel bearings and rotating tires front-back > i get a strong deep vibration on the highway between 140 and 150 mph its most noticeable Your 9kt does 150mph??? > it feels like > the vibration you get when the car is at very low rpms and you push the gas. also i feel some strange kind > of "play" not really play because the wheels go where i point them to, but a feeling like something is loosing contact to the ground, like lifted up inside, when i accelerate between, well 70 and maybe 100 mph. > does this rather sound like track rod ends/balljoints, cv joint or maybe just the motor mounts? > otherwise the car behaves just fine handles well and doesnt make any cracking sounds, just a bit of clunking sometimes in stop n go traffic, but i believe that are just slightly seized brake calipers. > any advice greatly appreciated If you intend to use the car at high speeds, first you need to check the suspension + steering thoroughly. Check for play in the front suspension and steering, and the rear suspension. Get the wheels balanced. -- Grunff

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