Besides (1) a bolt falling out of the transmission mount at the flexible coupling on the front straight, yes I heard it and then felt a vibration under my butt, and (2) the fuel issues in the other post:
(3) I started hearing a clicking noise that increases with speed in the back left corner. It sounds like a piece of paper when you hold it in a fan and increase the fan’s speed(you know, the Poltergiest sound from the TV set)
I lifted the rear and the left drive axle has quite a bit more play than the right. Is this a worn out CV jt?
Has anyone heard this sound?
A 3rd issue appeared this weekend at VIR
JayGolding
#1
mahoneyj
#2
Any significant play in the axles is not good. I have heard clicking noises in the past when CV joints failed on other cars.
Once you sort the car it should treat you well as long as you keep it off the wall.
jtower
#3
vir was tough on cars this weekend, in addition to jay and don’s woes i lost a LF wheel bearing (replaced the RF last week)
mahoneyj
#4
If one goes the other side will usually follow shortly. I always do them in sets just to keep things fresh.
jtower
#5
mahoneyj wrote:
all four wheel bearings were new when i bought the car last year, i figured the RF failure was simply due to my crash at the previous event. now i’m thinking they were part of a bad batch, not what i’d expect from FAG. just hope the rears don’t fail anytime soon.
mahoneyj
#6
Wow that’s a real short life. Maybe the other side got a bit beat up as well. I use FAG as well and hope they last a bit longer.
I was told that the rears usually start leaking some black grease before they die.
FARTBREF
#7
A couple of years ago we had a bunch of bearing failures…everyone was replacing them…not so much lately.
Al
doing my fronts tomorrow…
turbo329is
#8
Play is definitely bad. I don’t believe in replacing bearings in pairs. I think bearings without defect can last forever as long as they stay properly lubricated. I’ve never had a complete bearing failure they always give warning by groaning for weeks before they fail or even have play.
jtower
#9
mahoneyj wrote:
[quote]Wow that’s a real short life. Maybe the other side got a bit beat up as well. I use FAG as well and hope they last a bit longer.
I was told that the rears usually start leaking some black grease before they die.[/quote]
i was doing some misc nut and bolt checks on the car tonight and noticed some thick gritty black grease in the general vicinity of the LR wheel bearing. how concerned should i be about it?
it also looks like the LR outer cv boot has a tear and was patched at some point in the past, but the patch is now peeling off. any suggestions for dealing with this?
jlevie
#10
Black grease in the vicinity of a half shaft is going to be from one of the CV joints. Replacing the boots and re-packing the CV joints isn’t very difficult and is lots cheaper than replacing the half shafts. If the CV joints are still good new boots are called for. I prefer the OE boot kits, although they are a bit more expensive, as they come with everything needed.
jtower
#11
jlevie wrote:
the grease definitely wasn’t from the cv joint, that was clean and dry on the outside. it was more outboard, near the abs ring. i might have thought it was normal accumulation of gunk and crud but the other side was much cleaner and grease-free. but being relatively inexperienced in such matters i don’t know for sure.
so i guess i need to remove the halfshaft in order to replace the boot right? do i need any special tools for that?
edavidson
#12
Wheel bearing could be source of grease. Noticed it on my car, didn’t fail until 3-4 races later. No special tools to remove the half-shalf. Don’t forget to remove the circlip.
mahoneyj
#13
jtower wrote:
[quote]
the grease definitely wasn’t from the cv joint, that was clean and dry on the outside. it was more outboard, near the abs ring. i might have thought it was normal accumulation of gunk and crud but the other side was much cleaner and grease-free. but being relatively inexperienced in such matters i don’t know for sure.
so i guess i need to remove the halfshaft in order to replace the boot right? do i need any special tools for that?[/quote]
The wheel bearing may be dieing. Either replace it or keep a close eye on it and don’t get too upset if a race weekend comes to an end early.
I also like the OEM boot kits since all the right stuff is there to get the job done right the first time. Depending on what bands come with the boots you will also want a band crimping tool to get the bands on correctly. W/O the right tool its hard to get them on right.
Get a tool like this to get it on well. I have this one and it works great.
http://www.amazon.com/Lisle-30800-Boot-Clamp-Pliers/dp/B0002SREPY