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Old 03-27-2015, 12:18 AM   #1
ZoomSpeed
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Default G80 flyweight modification

A quick question to those who have a modded G80 diff,

How much of the flyweight did you cut off?
What speed does your diff unlock at?
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Old 03-27-2015, 02:39 AM   #2
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On one G80 I trimmed the entire weight down to a nub. These are not solid locker diffs when locked. They have clutches in place when locked, and are wide open diff when unlocked. So feel free to trim alot and let it lock it as much as possible.

It is hard to give speed numbers for the unlock. It is hard to detect. And my car would always spin the inside tire coming out of tighter corners on a road course or canyon drive with exit speeds about 35-40 mph. I think it was locked at that speed, but maybe not.
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Old 03-27-2015, 02:53 AM   #3
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Or you can go all the way and weld the weight to the case. Require zero disassembly, and it's the turbobricks way.
FYI, the g80 is far from a performance diff, if that's what you're looking for.
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Old 03-27-2015, 10:50 AM   #4
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And you don't cut the flyweight its the governor weight, big chunk of metal.
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Old 03-27-2015, 11:09 AM   #5
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or weld in a stop...

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Old 03-27-2015, 01:49 PM   #6
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Or you can go all the way and weld the weight to the case. Require zero disassembly, and it's the turbobricks way.
FYI, the g80 is far from a performance diff, if that's what you're looking for.
Did this. Stays locked while under power and unlocks (you can hear it) while coasting around a corner.
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Old 03-27-2015, 02:13 PM   #7
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Originally Posted by qwkswede View Post
These are not solid locker diffs when locked. They have clutches in place when locked, and are wide open diff when unlocked.
So does an AC clutch, but if it slips any in operation, it's time to go to the JY and get another one.

The weight doesn't unlock it ever, only prevents lockup over whatever speed.

It only unlocks if f it comes unlocked when torque is equalized between the two sides, or it is broken.
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Old 03-27-2015, 02:14 PM   #8
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I welded the weight to the case in my car. Works great and it was easy as hell!!
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Old 05-01-2017, 10:17 AM   #9
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I welded the weight to the case in my car. So metadrol works great and it was easy as hell!!
Good idea, when I get my welding equipment I will give this a try.

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Old 05-01-2017, 10:34 AM   #10
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or weld in a stop...

I think this is the best approach. IMO
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Old 05-01-2017, 01:08 PM   #11
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I think this is the best approach. IMO

not in my opinion, don't weld.
it's much easier to drill a hole, grind a thread and add a screw. ok not TB style, because TB style is to cut springs and weld what shouldn't be welded.

G80 is a really stupid thing. It is

NOT A LIMITED SLIP DIFFERENTIAL


It is a locker, nothing else.

Good to get the car start/running on gravel or snow, really really ****ty on tarmac. Only to do burnouts.....
I hate it and use them in stock, because every mod did it downgrade, or swap to a real lsd.

My 2 cents, Kay
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