Pete's right. That's not normal at all, replace it asap!
does this C Beam look normal?
Le Mans Master
Joined: Sep 2006
Posts: 6,050
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From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
looks like some bozo jacked the car up on the C beam.
I have one in my storage unit, and I can look at it tomorrow and let you know if it looks like that.
I have one in my storage unit, and I can look at it tomorrow and let you know if it looks like that.
Team Owner
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From: Riverside County Southern California
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No, that is not a normal C-beam
Racer
Joined: Jun 2008
Posts: 420
Likes: 1
From: Janesville WI
It is hard to tell w that pic, but I don't know.
I had a D44 and C-beam shipped to me recently. The box got it's butt kicked! I thought the C-beam was damaged because of the support structure (for the lack of a better word) looked bent. It obviously had the diff banging into it. However, once cleaned up it is so uniform, I feel it may be how it is shaped.
It may be damaged, I just wouldn't rush to judgement.
I had a D44 and C-beam shipped to me recently. The box got it's butt kicked! I thought the C-beam was damaged because of the support structure (for the lack of a better word) looked bent. It obviously had the diff banging into it. However, once cleaned up it is so uniform, I feel it may be how it is shaped.
It may be damaged, I just wouldn't rush to judgement.
Thread Starter
Pro
Joined: Jul 2008
Posts: 565
Likes: 0
could this be what is causing my car to shake and feel like insane tirehop under hard acceleration?
p.s. had my transmission replaced by a shop. not very happy right now. one of many complications i have had with their work.
p.s. had my transmission replaced by a shop. not very happy right now. one of many complications i have had with their work.
Last edited by MP6; Apr 16, 2010 at 02:05 AM.
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I had a D44 and C-beam shipped to me recently. The box got it's butt kicked! I thought the C-beam was damaged because of the support structure (for the lack of a better word) looked bent. It obviously had the diff banging into it. However, once cleaned up it is so uniform, I feel it may be how it is shaped.
Drifting
Joined: Jun 1999
Posts: 1,874
Likes: 1
From: Garden Grove CA
In regards to the OP's picture, I don't see what is troubling him - at least not from that picture. Yes its dirty, but even a pristine c-beam will not have perfectly straight sides.
As long as nothing is touching and the slignment is good, then no problem. I think the following will work on manual or auto trans: (Measurements taken from www.zfdoc.com) ALIGN DRIVELINE COMPONENTS: Take the following measurements directly above and to the right of the Propeller shaft front yolk universal joint. To ensure proper alignment of the driveline, a clearance of 45 mm +/- 6mm (1.77 in. +/- 0.236 in.) must be maintained between the top of the support to the underbody and a clearance of 28 mm+/-6 mm (1.1 in. +/- 0.236 in.) from the right side (passenger side of vehicle) of the support to the side wall.
There is something else that ZFDoc sells that helps with wheel hop c-beam issues, he calls them beam plates: http://www.zfdoc.com/c4beamplate.htm
Wheelhop can be cause by many issues, including:
1) worn shocks / old hard tires
2) seriously unbalanced wheels
3) aftermarket wheels with a hubcentric bore larger than 70.3mm - an uncentered wheel can trammel noticeably under acceleration.
4) driveline alignment
5) bad wheel bearings
6) bent or damaged suspension components
Sometimes it can be a process to discover the cause.
Thomas
As long as nothing is touching and the slignment is good, then no problem. I think the following will work on manual or auto trans: (Measurements taken from www.zfdoc.com) ALIGN DRIVELINE COMPONENTS: Take the following measurements directly above and to the right of the Propeller shaft front yolk universal joint. To ensure proper alignment of the driveline, a clearance of 45 mm +/- 6mm (1.77 in. +/- 0.236 in.) must be maintained between the top of the support to the underbody and a clearance of 28 mm+/-6 mm (1.1 in. +/- 0.236 in.) from the right side (passenger side of vehicle) of the support to the side wall.
There is something else that ZFDoc sells that helps with wheel hop c-beam issues, he calls them beam plates: http://www.zfdoc.com/c4beamplate.htm
Wheelhop can be cause by many issues, including:
1) worn shocks / old hard tires
2) seriously unbalanced wheels
3) aftermarket wheels with a hubcentric bore larger than 70.3mm - an uncentered wheel can trammel noticeably under acceleration.
4) driveline alignment
5) bad wheel bearings
6) bent or damaged suspension components
Sometimes it can be a process to discover the cause.
Thomas
Le Mans Master
Joined: Jul 2007
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From: Tampa Florida
Was this damage done by the transmission shop or was all this stuff damaged prior to you buying the car and you just never noticed it before now?
Team Owner
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