would a 84 318 LSD fit my 91 318?

[nickmpower]

would the lsd from a 84 318 fit my 91 318?

[Jordan]

If you are going to swap diffs, put a big case diff in from a 6 cylinder e30.

Small case diffs are weak.

[Charlie]

A bigger diff is gonna make that m42 feel like a slug.

Bigger diffs are heavier, with heavier internal components, aka more driveline loss.

-Charlie

[Stu]

A bigger diff is gonna make that m42 feel like a slug.

Bigger diffs are heavier, with heavier internal components, aka more driveline loss.

-Charlie

Doubtful on the drivetrain loss, both diffs are still taking a 90-degree angle to get the power to the wheels.

Big case, low ratio diffs definately make em feel slower. I had to rock a 3.25LS in mine for about a month one time. :down:

[Rob]

and m42s dont exactly have diff busting torque...

[Stu]

and m42s dont exactly have diff busting torque...

My dad asked, "what the hell did you do to this thing" when we took my stock 4.10 apart (after blowing the fucker up).

[Charlie]

A bigger diff is gonna make that m42 feel like a slug.

Bigger diffs are heavier, with heavier internal components, aka more driveline loss.

-Charlie

Doubtful on the drivetrain loss, both diffs are still taking a 90-degree angle to get the power to the wheels.

Big case, low ratio diffs definately make em feel slower. I had to rock a 3.25LS in mine for about a month one time. :down:

A bigger diff has heavier internal components, meaning more rotational mass, therefore meaning more driveline loss.

-Charlie

[nickmpower]

well i found a 84 318 lsd for like $135 so i think im gunna get it. It would fit right?

[nickmpower]

?????

[Jordan]

well i found a 84 318 lsd for like $135 so i think im gunna get it. It would fit right?

Yes it will fit, no its not the correct ratio.

You want a 4.10:1 LSD and nothing else.

[nickmpower]

its a 3.91 so its not that far off

[Jordan]

its a 3.91 so its not that far off

Thats off by alot. 318i's are slow enough as is. No need to change the gearing and make it even slower.

[e30Matt]

its a 3.91 so its not that far off

Thats off by alot. 318i's are slow enough as is. No need to change the gearing and make it even slower.

4.10LSD all the way. Mine has an E30 M3 diff, I'd definitely recommend it for a one-eight.

[nickmpower]

could i just swap the lsd unit from one diff from the other?

my moms 735 has a 4.44 i believe lsd but i love to drift in that too much

[Jordan]

could i just swap the lsd unit from one diff from the other?

I would have to say no, just because you asked. Tearing apart a LSD diff is not something you shoudl do unless you know what you are doing.