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Having new Differential Bushings Installed

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Old 01-23-2018, 01:11 PM
  #31  
Rochester
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Something like this:



Harbor Freight literally had them hanging on a rack at the check-out isle.
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4DRZ (01-23-2018)
Old 01-23-2018, 01:12 PM
  #32  
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Originally Posted by Lego_Maniac
I used a large syringe and a flexible tube.

Conventional wisdom is when it starts coming out the fill hole, it's full.

I did lower the car so it all drained, then squeezed under the car to fill it with said syringe.
That must have been a huge syringe or it took a while. I am just picturing the little syringes I use to take extra brake fluid out of the master cylinder when I do track days and switch pads that are thicker.

That makes sense to keep the car level. I would probably just put it up on jack stands or maybe just use the lift at work to make it easy.
Old 01-23-2018, 01:14 PM
  #33  
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Originally Posted by Rochester
Something like this:



Harbor Freight literally had them hanging on a rack at the check-out isle.
Ok that makes sense. Thanks! You mentioned throwing it away after using it once. Is it pretty poor quality or leak or something?
Old 01-23-2018, 01:23 PM
  #34  
AARONHL
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Do the G37s have plugs in the bottom of the trunk (in the wheel well)? Might be able to pop off the rubber plug for easier access to the diff with a hose. I forget how I did it on my g35 but I think I put it back down on the ground and use a hose with a funnel up the back of the bumper. I did the same thing with the transmission but ran the hose up the engine firewall with the car down.
Old 01-23-2018, 01:26 PM
  #35  
Rochester
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Originally Posted by 4DRZ
Ok that makes sense. Thanks! You mentioned throwing it away after using it once. Is it pretty poor quality or leak or something?
You're very welcome.

Yeah, it's cheap. Didn't want it dripping gear oil wherever it was stored, and I didn't want to mix fluids for whatever else I might use it for. So for only $5... I just tossed it out.
Old 01-23-2018, 01:27 PM
  #36  
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Originally Posted by 4DRZ
That must have been a huge syringe or it took a while. I am just picturing the little syringes I use to take extra brake fluid out of the master cylinder when I do track days and switch pads that are thicker.

That makes sense to keep the car level. I would probably just put it up on jack stands or maybe just use the lift at work to make it easy.


I used a 250 ml syringe (about 8.5 ounces), so figure ~6 refills.

Amazon Amazon

$24.99 for 3

I hate those little hand pump thingys....

Edit: found these, it was 150ml:



Last edited by Lego_Maniac; 01-25-2018 at 06:10 PM.
Old 01-23-2018, 01:28 PM
  #37  
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Originally Posted by Lego_Maniac
I hate those little hand pump thingys....
When I first used it, I had the direction backwards, and burped up gear oil all over the place.

I'm not proud.
Old 01-23-2018, 01:40 PM
  #38  
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Last few times I just used a hose and funnel to refill diff. Route the hose like an IV line along the axle and through the wheel. Best to do on a warm/hot day so the fluid flows well. I don't recall how long it took to do but was easier than messing with a fluid transfer pump.
Old 01-23-2018, 05:56 PM
  #39  
ezbme
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Damn, I feel like I should have taken it to the place that is doing the alignment. They charged me for 5 hrs labor, aka 580. At least 130 or so more than they first said when I was looking to have it done. I don't know when they started, was it 8am, when I brought the car in, or 9:30 when they told me that it was going to be 5 hrs later. If they wanted to burn their bridges with me, I feel like they did.

I went around the property next to theirs and saw my car sitting there at 1pm, yet they didn't give me the car back til 2pm. I gave them 2 qts of Diff fluid, they didn't give it back, hope they didn't use it all.

Then the guy at the counter told me that the old bushings weren't leaking, even though I saw the black mark of death on my cover.

The car does feel more solid and connected to the ground. I only drove it home, so no real judgement. I still need to get my throttle bodies cleaned, I have to bite the bullet and do it myself. Don't want to pay for more stuff I might not need.

I bought the car in November 2016, I have had the front brakes replaced, which it didn't need yet, the fluid flushed, didn't really need that either. I did get the transmission fluid changed that it needed.

Perhaps in time I will get a stillen cat back for it. I feel like that one is the perfect combo of performance, sound (not to loud) and price. If I wasn't in California, I would love to do the headers. I would probably go with stillen or DCs. I know DC makes quality stuff. I would love to also do high flow cats.

There will be more to come with my review of the parts. It definitely feels more harsh, but perhaps 10% more. I have run flats unfortunately, I plan on getting Firestone Fire Hawks. I was quoted 580 for a set 235/45/18 front 255/40/18 rear. Would be a vast improvement over the Contis, might get them later this year when the rebates come about, bringing the price to about 125 a tire. Great reviews on those tires.

Spoke to my mechanic, something I should have done this morning before he worked on it. He told me that the subframe has been replaced before, the part said 2013 on it, so it could have been later. The bushings were all okay and he figured that the stains were from when they replaced the sub frame before. He also told me that the one sub-frame mount was hard to get in. I guess there wasn't much room between the cut in the rubber and the aluminum. He didn't know why I wanted to do work on a perfectly good sub-frame. Looks like the car I bought last year was in far better shape than I ever knew.

Damn, don't like spending money when I don't have to, would have rather put it somewhere else like a tune or exhaust. It does feel more put together.

Last edited by ezbme; 01-23-2018 at 07:20 PM.
Old 01-25-2018, 05:16 PM
  #40  
4DRZ
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That's a bummer that you may not have needed the bushings yet, but look at it this way- now you will probably never need to do them again and your car will be more solid.
Old 01-25-2018, 06:17 PM
  #41  
ezbme
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Actually after finding a few deals last year, I was thinking of selling if I got the right price. But I figured, who would buy with blown rear diff bushing. You probably don't like them, but I found a 2014 IS350 F Sport with ML sound for 19k with 80,000 miles.
Old 01-25-2018, 06:30 PM
  #42  
Lego_Maniac
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Originally Posted by ezbme
Actually after finding a few deals last year, I was thinking of selling if I got the right price. But I figured, who would buy with blown rear diff bushing. You probably don't like them, but I found a 2014 IS350 F Sport with ML sound for 19k with 80,000 miles.
I'd imagine 95% of shoppers would have no idea, especially if one were to clean up the bushing puke.

The shop that did my bushings cleaned everything up so that you couldn't even tell it had leaked out
Old 01-25-2018, 10:23 PM
  #43  
ezbme
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I haven't checked to see if they cleaned the cover. I never considered covering it up.
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