Originally Posted by aidandj
(Post 1313331)
That ball joint tool sucks, get a helper, makes it 10 times easier. I will say you are less likely to destroy a control arm like i did that way.
Also don't forget a good corded 1/2 chuck drill, and corresponding drill bit. My cordless drill battery lasted 1.5 bushings on a full charge. I'll figure something out for the rest of it. |
Also when the batteries die it gets the bit stuck in the bushing, and can tear it up when you pull out. If you can get your hands on a 1/2" corded drill you will hate life so much less.
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Removing old rubber bushings?
Attachment 183802 I can have a whole miata debushed inside an hour. Cut the flanges off the rubbers and use an impact to suck them into a pipe fitting. Or, ya know, crush them in a press :giggle: Looking at it now, ought to be able to reassemble them this way too... |
Yep, i bet you could get them in that way.
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Originally Posted by aidandj
(Post 1312826)
Not at all, especially if you have a street car. I would say poly is by far the best budget option (if you don't have access to a lathe).
Delrin is very stiff, and also requires a lot of labor to machine (instead of just being cast like poly) See the details about the bronze bushing conversion kit if you want to get rid of some of the binding issues with poly. That being said 90% of track miatas run poly, and it performs perfectly fine, it just isn't the best solution It appears that the kit already comes with bronze bushings. Is there a binding issue related to the alloy they use? |
What kit? Most of them come with a mild steel sleeve inside the poly bushing.
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Originally Posted by aidandj
(Post 1315208)
What kit? Most of them come with a mild steel sleeve inside the poly bushing.
Energy Suspension Bushings Miata I did some quick searching and wasn't able to see the bushing material listed anywhere. Looks bronze-ish to me, but if they are indeed mild steel then bronze replacements would make sense. |
Originally Posted by dleavitt
(Post 1315210)
The Energy Suspension kit on 949 that was linked earlier.
Energy Suspension Bushings Miata I did some quick searching and wasn't able to see the bushing material listed anywhere. Looks bronze-ish to me, but if they are indeed mild steel then bronze replacements would make sense. |
Theyre just chromate plated. Im betting they are 1008 or similar after pulling them out of aarons car.
Besides the sleeve crushing issue. Poly to bronze coefficient of friction is no better than poly to steel. It doesnt work that way. |
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Since drilled holes in Delrin seem to gradually approach nominal size with more effort, "reaming" the bores with a drill press turned out really well. Each drilling pass made the hole a tiny bit bigger, and I eventually got the fit I wanted where the sleeve had a little less resistance to rotation (when dry) than a tight spherical or ball joint.
https://www.miataturbo.net/attachmen...ine=1458798716 https://www.miataturbo.net/attachmen...ine=1458798716 |
Digging thse zerk caps. Linky?
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McMaster-Carr
EDIT: I guess you can't link directly to the product, but the caps are at the bottom of the page. The 1" strap ones fit fine even on the extended zerks. Pretty much building a McMaster-Car over here. |
Sweet, I will be getting zerk caps when I do that. McMaster has everything.
Btw, I build adjustable end links using the 3/8-24 hardware and rod ends they have a McMaster. Two years going strong on a solid 1" front bar set full stiff. Cost around $50 to get enough parts to make 4 of them. |
Originally Posted by x_25
(Post 1318082)
Sweet, I will be getting zerk caps when I do that. McMaster has everything.
Btw, I build adjustable end links using the 3/8-24 hardware and rod ends they have a McMaster. Two years going strong on a solid 1" front bar set full stiff. Cost around $50 to get enough parts to make 4 of them. |
I did the same thing as X_25, made my own spacers, they have just enough articulation, and i mean just enough, like a degree shy of bind. 4 track seasons, 5k street miles, 0 issues, almost no wear.
I also have some updated info and install tips with a video staring me I have yet to upload, ill try to soon. |
I've put about 50 miles on the delrin so far and I love it. Ed and I are going to do some back to back tests, delrin vs poly. But the NVH hasn't gotten any worse at all
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https://www.miataturbo.net/attachmen...ine=1458895094
in case if anyone decides to diy rear polys. I've made them myself for a 90A poly, only the inside diameter of a bushing was made to -0,2mm for little bit push fit for a insert. Everything so far so good |
Installed my bronze retro. It's amazing much grip activated
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Originally Posted by hi_im_sean
(Post 1318199)
I did the same thing as X_25, made my own spacers, they have just enough articulation, and i mean just enough, like a degree shy of bind. 4 track seasons, 5k street miles, 0 issues, almost no wear.
I also have some updated info and install tips with a video staring me I have yet to upload, ill try to soon. https://www.miataturbo.net/attachmen...ine=1458958335 |
Originally Posted by hi_im_sean
(Post 1318199)
I did the same thing as X_25, made my own spacers, they have just enough articulation, and i mean just enough, like a degree shy of bind. 4 track seasons, 5k street miles, 0 issues, almost no wear.
I also have some updated info and install tips with a video staring me I have yet to upload, ill try to soon. |
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