Thread: Pre-Purchase: 32V SR16VE Helical LSD

do you know, if is needed to "take out" the inner part of the OEM LSD, marked on this image with finger?

I'm having trouble seeing the image. When I cut and paste the URL, it asks for a login.

The MFactory bolts to the original VLSD unit, which is sealed. The differential housing with the "spider" gears is completely replaced by the MFactory unit. You basically unbolt the final drive gear, pull the LSD halves apart, and never again use the half with the visible gears.

that looks to me like the same question as was asked to post 330. it stays

...

the mfactory helical actually bolts to the 1/2 of the oem diff with the viscous diff in it, not the other bit with the gears, just putting that out there...

blurry photo of this when i was checking the bolt holes.

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Many thanks, this is what I needed to know!

I did a write-up on my DIY differential install:

http://www.sr20-forum.com/driveline-tech/77303-installing-mfactory-helical-differential-rs5f32v.html

I drove the car at a RallyCross on Saturday, and the car handled it well. So far, so good. I hope you pavement guys enjoy yours.

Thank you, I was hoping someone would make a tutorial.
Could you think of any reason someone would need to put a shim under the race on the other side?

The FSM only specifies a shim on the driver/left side for preload adjustment. There is no Nissan part number available for the passenger/right side.

Here's the picture of the RS5F70 posted earlier in the thread (near-identical diagram to a RS5F32):
32V70Vringgeartorquespecs_zps9f75c9f2.png Photo by zilvia_album | Photobucket

Part #1 is the location of the shim(s).

If you had a differential that was radically different in length from an OEM or MFactory, you might need to find your own shim(s) for the opposite side to get the final drive gear to have a good mesh pattern with the gear shaft. I doubt that's a problem with the current offerings for our cars, though. I believe the main goal of the shim(s) in FWD cars like ours is to keep the tapered differential bearings centered and rolling smoothly in their races.

I know that in the off-road and RWD community, they will use prussian blue or gear paint to check their gear engagement pattern when replacing differentials. They also have to worry about backlash, which we shouldn't.