I see no reason why the Whiteline bushing will not work on a G37.370Z.

The whiteline bushing does not get pressed into the crossmember.
I bolts to the differential, and becomes an interference fit when it gets pushed back into the crossmember. Urethane has some give, unlike the solid ones.

http://www.whiteline.com.au/docs/ins...des/Z5206A.pdf





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isnt an interference fit the same thing as a press fit? would the white line allow for more movement because its not pressed in? Im asking these questions because I dont know

 

Press fit is just that, you need great force to install it.

The Whiteline looks like a ball, the instructions say to install the bushing on the diff and bolt it, then push the diff with bushing into the hole.
Im sure if the G37 opening is only slightly smaller, that urethane bushing would have some ability to compress to fit in.

Look at the pic, and pdf I supplied.

 

Has anyone measured the opening for the differential bushing? Whiteline provides the exact dimensions of all of their bushings. An accurate measurement of the hole in the crossmember will tell us definitively if it fits or not.

 

Just curious, have you installed this on your car? Trying to figure out what I can do with mine...

 

No, I haven't, but all logic dictates it should fit.

 

It would be a hard fit regardless. The 350 bushing is couple NM bigger, someone on the370 forums installed the 350z spl bushing and it had to be machined to fit. Even the with it being rounded off and being made out of urethane would mean it would have to be pressed in since the diameter of the 370/g37 sub frame bushing hole is a couple nm smaller than the 350.

Thats a picture of the SPL 350z bushing that had to be machined to fit into a 370 subframe. The regular ones are coated blue all around and the 370 version has a black coating

 

Bushings like this are intentionally a few nanometers larger than the hole so that they fit tightly. Do you mean it's a few millimeters too big? That's different. The urethane ones are much easier to fit if you freeze them as hard as possible before installing. I wonder if this would work... Also what about the other two bushings, how did they fit?

Thanks for the photo. I may try the Whiteline urethane set and simply mill off as much as I need to if it is too big.

 

Let me know how that goes. I'll probably end up doing the same thing.

 

Great! Wait for me to be the guinea pig!

It may be a while before I do it. It makes sense to me to wait until I'm going to already have the differential out to do the 4.08 gear swap to save a little bit on labor by doing the bushings at the same time so I only have to remove and replace it once. That's not at the top of my list of expenditures but it's on there.

 

SPL make two different differential kits one for the 350z and one for the 370z. The picture above is one of the 350z bushings that was milled to fit into the 370z subframe, when SPL made them they thought that the 350z bushing would fit the 370z without any modification but the 370z subframe hole is a couple nanometer smaller than the 350z. At this point a lot of the guys that were trying to install the 350z kit couldnt get the damn bushing to squeeze on, even getting the bushing fed into the 370z subframe hole was a problem. SPL created two different kits one that was blue in colour made for the 350z and on a later note created one that is black for the 370z. As far as the other two bushings no modification was needed you could use either or for the "ears" of the differential. When I installed the solid bushing I froze it for over 3 days and I still had to press it in. Make sure when you pull the old bushing out you clean the hole in the subframe with some sand paper and WD-40 the crap out of the hole before the bushing is pressed in.

This one is for the 370z

This one is for the 350z



that silver disc is used to press the bushing out its a couple NM smaller than the actual bushing. If you're going to install the whiteline bushing I'm almost certain you're going to have to mill that thing down to size unless urethane shrinks a significant amount when you freeze it. Keep us posted BB

this is after the 370z bushing was pressed into my G's subframe see how none of it sticks out like the blue 350z one that was modified to fit the 370z


I still owe you guys that cabin video... its coming soon as the snow start to clear

 

Differential bushing - Page 3 - Nissan 370Z Forum

 

I dont disagree, but there is absolutely no give on a solid metal bushing.
I'm thinking the urethane can be pushed in without much pressure, if you say only a few nm. Urethane will compress.

 

Awesome info, thanks for that. Did you remove the subframe entirely to press it in or did you press it in with the subframe still on the car?

 

So what's the verdict? Which poly bushing fits?