Question about 1985 Maserati Biturbo

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Differential Apparently the diff is weakness on these cars. Is there an alternative difff I can use ie. BMW or Alfa??

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  • Anonymous Mar 05, 2009

    The newer limited slip is better, aka 430 type. Otherwise the open diff is pretty trouble free. The early limites slip "Sensitork" had very small gears that can break. BMW differentials are not compatible and would require extensive fabrication work to install.



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Posted on Jun 22, 2008


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How do you repair the rear differential on a BMW X5, 3l, diesel, auto. Makes grating sound in reverse, not engaging forward. Oil leaked out through diff.

Hey Jordan, Repairing a differential is a complex task..( to make it RIGHT and have it last)... Please take it to a qualified professional!!

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Does a Tri Glide Ultra have a limited slip differential or is it just a single wheel drive

I am not familiar with the bike and specs don't mention the detail you request. I suspect if there was a limited slip diff fitted it would appear in the list.

It might be a single wheel drive but in the case of narrow track rear wheels it could be two wheel drive with no differential. A wider track vehicle has been equipped with a twin belt drive and performed admirably without a diff.

It could alternatively be fitted with a standard diff.

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BMW whine noises 70mph

Hello Robert Anderson,

I always ask the color when my friends are describing their car... and immediately ask the interior color too...
It helps me imagine their following sumptuous description...
Twin-turbos, 8 speed automatic, Walnut grain...
fuzzy DICE... Plastic idols affixed to the dash (etc.)...
all helps in the visualizations

but... for your car I imagine a noise.

Okay... a 70 mph whine usually means the rear end differential gears have gotten out of alignment.

It could mean a few other things... but that is the biggie!

Hope this helps!

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Nov 06, 2016 | BMW Cars & Trucks

1 Answer

Where can I get a refurbished diff or internal gears so I can rebuild the diff myself ? & how much would it set me back,a new 1 fitted by BMW here in Limerick Ireland is near €3500 euros

have you gone on line to look for rebuilders or differential parts suppliers. that would be the first place to look. then you should by a manual on differentials to know what is needed both in tooling and specs for clearances and torque values.

Jul 31, 2015 | BMW Cars & Trucks

1 Answer

I have a 1972 bmw automatic Bavaria with 1975 3.0si engine Differential makes noise.

you would only experience problems from the diff if there was a substantial increase in torque from the different engine as there would be less than 10% difference in torque ratings , Any noise from the diff would be naturally occurring from wear or oil
diff noises indicating bearing problems are a whine on drive or coasting , an growl on deceleration and a harmonic whine or growl when the vehicle is held at steady speed Other than those indications , I would be more inclined to suspect wheel bearings and brake associated noises
wheel bearings are normally more pronounced on cornering

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1 Answer

I hear a humming noise in the rear when driving my 2001 BMW 325I. Stops when in neutral. gets louder as I excellerate

I expect you have a damaged rear differential. It is a common problem on these BMW's. I have just had mine replaced. I used a second hand diff unit from a breakers, which cost £281 (inc VAT and delivery). It arrived the day after I ordered it. A decent garage will charge you less than £200 to fit it.

Dec 28, 2009 | 2001 BMW 325

3 Answers

Whining noise coming from back on my 316i e46 bmw could the oil in dif be low..

Hi, there, Check your break pads. Could be from there.

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1 Answer

Hello,this is Nick...i've got a 1990 bmw 3 series

yes there are many companies that sell window kits to convert the car, as far as the diff noise goes u need a load of special tools to do this repair, by the time u buy all the tools to set the gears up correctly u could pay someone to do it. Do you still want to do the diff gear set?

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3 Answers

Hi, i have an m3 e46 2002 year model. my problem is a noise coming from the rear.possibly the diff when i turn left or right at slow speeds.

dont understand if it was the diff the noise would be their all the time like a whining noise sounds a bit like a wheel bearing or drive shaft or a bush bmws are prone to this hope ive helped you

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1 Answer

Front end and rear end differential

The 99 Jeep Grand Cherokee was prone to bad diff bearings because they changed the plant where they were made. The new plant used inferior materials. The only way to fix it is to replace and set the diff clearences.

Feb 17, 2009 | 1999 Jeep Grand Cherokee

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