8.8 TrueTrac Problems?
- Thread starter ricardoa1
- Start date
Alexx03
New Member
Hey guys,new random member. Found this thread on google.
I have a BMW 335i with a ford 8.8 IRS differential with a truetrac,custom axles and driveshaft.
Ive gone over this thread and many others online across different forums and they all say the same about being hit or miss with noise.
My truetrac makes the clunking noise upon letting off the gas or clutching in while moving. Shops around here are telling me its NOT normal,but from what this thread and others say it is hit or miss that you get noise. The diff has been dropped and inspected twice,cars been to 3 different shops.
No one can tell me what the noise is.
Would you guys say its just my luck that its a noisy unit?
Sorry for the long post but I promise ill leave if a bmw isnt wanted around here once you guys help me out lol
I have a BMW 335i with a ford 8.8 IRS differential with a truetrac,custom axles and driveshaft.
Ive gone over this thread and many others online across different forums and they all say the same about being hit or miss with noise.
My truetrac makes the clunking noise upon letting off the gas or clutching in while moving. Shops around here are telling me its NOT normal,but from what this thread and others say it is hit or miss that you get noise. The diff has been dropped and inspected twice,cars been to 3 different shops.
No one can tell me what the noise is.
Would you guys say its just my luck that its a noisy unit?
Sorry for the long post but I promise ill leave if a bmw isnt wanted around here once you guys help me out lol
You're not alone. I purchased a truetrac since I was told it was quiet. I get clunk as if there's excess backlash. My ring/pinion backlash is good but the actual truetrac worm gears are where the backlash is coming from. The issue is amplified by my carbon fiber driveshaft which doesn't do anything to dampen the noise/clunkyness.
Curious on the Carbon fiber driveshaft, I've read that it suppose to help with NVH? Did you notice any benefits with the CF driveshaft? You say it doesn't do anything for dampening noise, are you referring to the clunk?
What fluids are you running? I have had mine installed for about 6 years and it is quiet.
I also have a CF driveshaft. 12lb lighter than stock so a little bit less rotational mass but not noticeable in the 700rw+ range. one benefit is no DS loop needed since if it brakes it shatters.
I am considering insatlling a CF driveshaft just not sure if the cost validtes the performance gains, kind of like LT header investment?
Iam more concerned with the effectiveness of the CF driveshaft controling the NVH.
Wait, what?
Comparing how much power for the buck you get out of LTs.
LTs are a supporting mod. You do them to reach full potential of the rest your mods. Absolutely worth it.
I would do LTs over and over again. Would never do a build with out them. CF drive shaft so far down my list. On a future build I would only do it if my stock one got damaged.
I got caught up years ago in a group purchase for the drive shaft.
I clearly understand and see you guys point on the LTs if my car was a full time track car, and i intended to make outrageous HP #s I can justify cost. But you have to admit a good set of LTs are pricey and lets not forget they are pia to install.
I see plenty of people on here making good power on these cars with out the LTs. Dont get me wrong I love the way it sounds and realize the benefits from them. But i can also do with out the scrapping on speed bumps or even in my own driveway.
I see plenty of people on here making good power on these cars with out the LTs. Dont get me wrong I love the way it sounds and realize the benefits from them. But i can also do with out the scrapping on speed bumps or even in my own driveway.
the CF driveshaft amplifies noise because it does not flex like aluminum. the clunkiness is definitely amplified. however, rotational vibration is nonexistent.
Thanks for the info!
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