Quaife LSD Differential build and install

IK6SPEED · 09-11-2018, 09:39 AM

On the advice of Lancelot moving forward with a Quaife Differential on my F30 highly modified AH3.

Went about it differently than others.

Found a used 2017 Differential on eBay with 9k miles for $180 (had a broken outer seal which scared most away).

Was in Trenton, NJ so I had someone drive it to the Quaife Distributor/Machine Shop in Philadelphia avoiding shipping charges and also visually inspect Differential.

A weld needs breaking in the BMW Differential and a machine shop to complete the rebuild.

They are starting the rebuild process.

Will have it installed at LABWORXS in Cherry Hill, NJ.

This allows me to keep the stock OEM Differential for whatever reason in future should I want to go back to stock and sell Quaife unit (highly doubt it).

Also allows me to keep car operational during the rebuild time.

Will update as it proceeds.

kern417 · 09-11-2018, 09:59 AM

Nice. I was looking at wavetrac because I believe they sell the whole assembly with a core charge. But this seems cheaper if deals like that can be found.

52172 · 09-11-2018, 02:35 PM

Quote:

Originally Posted by kern417

Nice. I was looking at wavetrac because I believe they sell the whole assembly with a core charge. But this seems cheaper if deals like that can be found.

Wavetracs are nice I was running one with 625 whp for awhile in my CAMARO.

52172 · 09-11-2018, 02:37 PM

Are our f30 diffs interchangeable with the f80's?

IK6SPEED · 09-11-2018, 02:40 PM

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

52172 · 09-11-2018, 02:42 PM

Quote:

Originally Posted by IK6SPEED

On the advice of Lancelot moving forward with a Quaife Differential on my F30 highly modified AH3.

Went about it differently than others.

Found a used 2017 Differential on eBay with 9k miles for $180 (had a broken outer seal which scared most away).

Was in Trenton, NJ so I had someone drive it to the Quaife Distributor/Machine Shop in Philadelphia avoiding shipping charges and also visually inspect Differential.

A weld needs breaking in the BMW Differential and a machine shop to complete the rebuild.

They are starting the rebuild process.

Will have it installed at LABWORXS in Cherry Hill, NJ.

This allows me to keep the stock OEM Differential for whatever reason in future I should want to reinstall and sell Quaife unit.

Also allows me to keep car operational during the rebuild time.

Will update as it proceeds.

Nice find!

52172 · 09-11-2018, 02:43 PM

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

Do f80's have bigger axles and r and p?

Lancelot · 09-11-2018, 03:01 PM

Well it's an electronic diff to begin with so you'd need an ecu that would accept to play with the rest of the car's ecus, then physically the attachment points to the subframe are different (as f80 subframe is different too).

IK6SPEED · 09-11-2018, 03:05 PM

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

Do f80's have bigger axles and r and p?

F80 final ratio is 3.46 unlike the f30s, even if the other parts would match up (they do not) as Lancelot stated.

The N55 F30s run 2.81 (d and AH3), 3.15 Sports/Automatic and 3.23 Manual

The B58 F30s run 2.81 Sports/Automatic or 3.13 Manual.

If buying a used differential, you need to make sure it matches up to what up you have.

52172 · 09-11-2018, 03:58 PM

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

Do f80's have bigger axles and r and p?

F80 final ratio is 3.46 unlike the f30s, even if the other parts would match up (they do not) as Lancelot stated.

The N55 F30s run 2.81 (d and AH3), 3.15 Sports/Automatic and 3.23 Manual

The B58 F30s run 2.81 Sports/Automatic or 3.13 Manual.

If buying a used differential, you need to make sure it matches up to what up you have.

What's the final drive in my m6 f30 335? 3.73?

IK6SPEED · 09-11-2018, 03:59 PM

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

Do f80's have bigger axles and r and p?

F80 final ratio is 3.46 unlike the f30s, even if the other parts would match up (they do not) as Lancelot stated.

The N55 F30s run 2.81 (d and AH3), 3.15 Sports/Automatic and 3.23 Manual

The B58 F30s run 2.81 Sports/Automatic or 3.13 Manual.

If buying a used differential, you need to make sure it matches up to what up you have.

What's the final drive in my m6 f30 335?

There is no M6 F30

52172 · 09-11-2018, 04:00 PM

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

Do f80's have bigger axles and r and p?

F80 final ratio is 3.46 unlike the f30s, even if the other parts would match up (they do not) as Lancelot stated.

The N55 F30s run 2.81 (d and AH3), 3.15 Sports/Automatic and 3.23 Manual

The B58 F30s run 2.81 Sports/Automatic or 3.13 Manual.

If buying a used differential, you need to make sure it matches up to what up you have.

What's the final drive in my m6 f30 335?

There is no M6 F30

Manual tranny lol yes there isðŸ˜Ž

IK6SPEED · 09-11-2018, 04:01 PM

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Quote:

Originally Posted by IK6SPEED

Quote:

Originally Posted by 52172

Are our f30 diffs interchangeable with the f80's?

No

Do f80's have bigger axles and r and p?

F80 final ratio is 3.46 unlike the f30s, even if the other parts would match up (they do not) as Lancelot stated.

The N55 F30s run 2.81 (d and AH3), 3.15 Sports/Automatic and 3.23 Manual

The B58 F30s run 2.81 Sports/Automatic or 3.13 Manual.

If buying a used differential, you need to make sure it matches up to what up you have.

What's the final drive in my m6 f30 335?

There is no M6 F30

Manual tranny lol

Answer was above prior to your post then.

52172 · 09-11-2018, 04:07 PM

I see it now 3.23 thanks
I'm posting while working....

IK6SPEED · 10-12-2018, 07:18 PM

Finally back and installed.

Lancelot

52172 · 10-12-2018, 07:40 PM

Nice time to take her out on the back roads and do some damage!

52172 · 10-12-2018, 07:41 PM

I used to run a Quaife in my mk2 gti with the g60 motor. Loved it!

afranke · 10-12-2018, 09:07 PM

Let me know how it is, this is just about the only mod I don't yet have on mine.

Eschmacher · 10-12-2018, 09:07 PM

How much was the damage? I'd like to do this as well, I'd prefer a quaife or wavetrac over the m performance...

IK6SPEED · 10-12-2018, 09:15 PM

Quote:

Originally Posted by Eschmacher

How much was the damage?

Rough figures, $1500 for the Quaife.

Another $1100 to mod the current dif as a machine shop is needed with special equipment to break weld and modify it with Quaife. Most shops do not have the equipment to machine this.

And about another 4 hours of labor to install modified dif in car.

Eschmacher · 10-12-2018, 09:22 PM

Quote:

Originally Posted by IK6SPEED

Rough figures, $1500 for the Quaife.

Another $1100 to mod the current dif as a machine shop is needed with special equipment to break weld and modify it with Quaife. Most shops do not have the equipment to machine this.

And about another 4 hours of labor to install modified dif in car.

I'm surprised the quaife diff itself was so expensive, I was under the impression that they went for about a grand... or were you adding in the cost of the donor pumpkin as well?

IK6SPEED · 10-12-2018, 09:38 PM

Quote:

Originally Posted by Eschmacher

I'm surprised the quaife diff itself was so expensive, I was under the impression that they went for about a grand... or were you adding in the cost of the donor pumpkin as well?

Nope

09-11-2018, 09:39 AM	#1
IK6SPEED Banned 4488 Rep 10,473 Posts Drives: BMW M3 / AH3 Join Date: Jan 2013 Location: Cali iTrader: (23)	Quaife LSD Differential build and install On the advice of Lancelot moving forward with a Quaife Differential on my F30 highly modified AH3. Went about it differently than others. Found a used 2017 Differential on eBay with 9k miles for $180 (had a broken outer seal which scared most away). Was in Trenton, NJ so I had someone drive it to the Quaife Distributor/Machine Shop in Philadelphia avoiding shipping charges and also visually inspect Differential. A weld needs breaking in the BMW Differential and a machine shop to complete the rebuild. They are starting the rebuild process. Will have it installed at LABWORXS in Cherry Hill, NJ. This allows me to keep the stock OEM Differential for whatever reason in future should I want to go back to stock and sell Quaife unit (highly doubt it). Also allows me to keep car operational during the rebuild time. Will update as it proceeds. Attached Images Last edited by IK6SPEED; 09-11-2018 at 11:11 PM..
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09-11-2018, 02:37 PM	#4
52172 Captain 157 Rep 928 Posts Drives: 2015 Bronze Metallic 335i Join Date: Aug 2018 Location: Buellton iTrader: (0)	Are our f30 diffs interchangeable with the f80's? __________________ 2015 335i 6sp manual with MPK and sport pack GPlus intercooler and CP. Stage 1. CG precision dp. Staggered 19?s. 275/35/19, 245/40/19 ps4s.
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09-11-2018, 03:01 PM	#8
Lancelot Major 568 Rep 1,291 Posts Drives: 2017 m550i Join Date: Sep 2012 Location: France iTrader: (0)	Well it's an electronic diff to begin with so you'd need an ecu that would accept to play with the rest of the car's ecus, then physically the attachment points to the subframe are different (as f80 subframe is different too). __________________ 2017 M550i \| Sophistograu Previous cars: 2014 F30 ActiveHybrid 3 \| 2012 f20 M135i
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09-11-2018, 04:07 PM	#14
52172 Captain 157 Rep 928 Posts Drives: 2015 Bronze Metallic 335i Join Date: Aug 2018 Location: Buellton iTrader: (0)	I see it now 3.23 thanks I'm posting while working.... __________________ 2015 335i 6sp manual with MPK and sport pack GPlus intercooler and CP. Stage 1. CG precision dp. Staggered 19?s. 275/35/19, 245/40/19 ps4s.
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10-12-2018, 07:18 PM	#15
IK6SPEED Banned 4488 Rep 10,473 Posts Drives: BMW M3 / AH3 Join Date: Jan 2013 Location: Cali iTrader: (23)	Finally back and installed. Lancelot Attached Images
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10-12-2018, 07:40 PM	#16
52172 Captain 157 Rep 928 Posts Drives: 2015 Bronze Metallic 335i Join Date: Aug 2018 Location: Buellton iTrader: (0)	Nice time to take her out on the back roads and do some damage!
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10-12-2018, 07:41 PM	#17
52172 Captain 157 Rep 928 Posts Drives: 2015 Bronze Metallic 335i Join Date: Aug 2018 Location: Buellton iTrader: (0)	I used to run a Quaife in my mk2 gti with the g60 motor. Loved it!
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10-12-2018, 09:07 PM	#18
afranke Lieutenant 207 Rep 488 Posts Drives: 2013 ActiveHybrid 3 Join Date: Jan 2016 Location: Raleigh, NC iTrader: (0)	Let me know how it is, this is just about the only mod I don't yet have on mine. __________________ 2013 ActiveHybrid 3 (335ih) • N55 PWG • Meisterschaft GT catback • Wagner tuning catless DP and Stage 2 Evo Comp Intercooler • ER chargepipes • CTS intake • io2V3 O2 simulator • Pure Stage 2 turbo with high-flow inlet and DV upgrade • Fuel-It Stage 2 LPFP • JB4 ISO firmware • Fuel-It DIY PI Kit • bootmod3 •
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10-12-2018, 09:07 PM	#19
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	How much was the damage? I'd like to do this as well, I'd prefer a quaife or wavetrac over the m performance...
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