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Does anyone still sell delrin bushings? Especially an offset upper control arm set to gain more camber adjustability?
I have stretched out multiple powerflex purple bushings, trying their "race" version now however ultimately delrin is optimal.
Don't know of any FD specific providers but... These guys just released a similar bushing for Spec Miata. Maybe contact them and see if they can do one for the FD? https://www.racebushings.com/product...r-mazda-miata/
Hardrace has a full camber adjustable upper control arm available. They make them with hardened rubber and spherical so you have a choice. I have a set on my personal car and I like them.
I emailed racebushings and they are interested in creating FD products. They would need a group buy to kickstart it however.
I do believe spherical bushings may be too harsh for the average street/track FD. Those hardraceshop arms are nice however a replacement bushing would be ideal to keep the stock arms. I am just nervous about welded aftermarket arms, just me.
Find a friend with a lathe? Delrin is cake to machine.
That ^^^ Find a local small machine shop who can work this kind of job in between larger ones. They usually are happy to do so especially if you aren't in a tearing rush and they can fill some dead time in the next week or two.
I had some custom brackets made for a power steering add-on to my old Land-Rover and iirc the guy charged me around $100 to machine the main bracket plus a couple of reinforcing ears (material and welding was separate)
T the cars already have camber adjustment. Maybe these are for the ridiculous amount of camber stanced look?
This is a race car / heavy track only kinda mod. It's difficult to get around -3* or more camber on the front of the FD - and the RX8, MX5, NA/NB Miata.
The Hardrace ones look nice, but the cars already have camber adjustment. Maybe these are for the ridiculous amount of camber stanced look?
not at all actually... i didn't ask when my car was on the alignment rack but I'm pretty sure they only have a 6* swing. 3+ and 3-. so you can install them on a stock height car and still maintain factory stance.
Putting eccentric bushes in is appealing for simplicity - and superpro sells urethane ones - which I assume have the same longevity as powerflex, really only addresses camber though. Short of making/buying arms, modification to the subframes is another route you might consider.....and improve castor range at the same time.
If still keen on the original idea, there's a few other plastics that cost a little more than acetal and might perform marginally better.
This is a race car / heavy track only kinda mod. It's difficult to get around -3* or more camber on the front of the FD - and the RX8, MX5, NA/NB Miata.
Does an FD track car actually need -3 degrees static on the front? Other than for tire fitment?
If all else fails, they still make eccentric pillowball bushings in Japan... A full set is $$$$, though.
Does an FD track car actually need -3 degrees static on the front? Other than for tire fitment?
If all else fails, they still make eccentric pillowball bushings in Japan... A full set is $$$$, though.
YMMV as they say. Pyrometer is your friend to determine that.
More than 3 is definitely needed for NA and NB Miatas. We generally run -3.5*. Some more; some less.
The scenarios I'm referring to are not for tire fitment.
YMMV as they say. Pyrometer is your friend to determine that.
More than 3 is definitely needed for NA and NB Miatas. We generally run -3.5*. Some more; some less.
The scenarios I'm referring to are not for tire fitment.
Hmm. Fair enough. I think I have around -2 in the front, and my pyrometer readings seem reasonable, though honestly they probably aren't that reliable since I am the one taking them! Haha.
In the rear I've probably only got -1 or -1.5, and it's clearly not enough, since the outsides of the tires are turning a different color than the rest.
Not being street legal makes aligning my car a massive hassle, unfortunately... Don't even get me started on corner weighting!
Do a search for Kevin Doe offset bushings. Kevin made a drawing of an offset upper control arm bushings for an FD and he posted it to this forum. I used his drawings and I had a shop fabricated some bushings for me. With this offset bushing, I can get up to -3.7 or more of camber in the front.
Hmm. Fair enough. I think I have around -2 in the front, and my pyrometer readings seem reasonable, though honestly they probably aren't that reliable since I am the one taking them! Haha.
In the rear I've probably only got -1 or -1.5, and it's clearly not enough, since the outsides of the tires are turning a different color than the rest.
Not being street legal makes aligning my car a massive hassle, unfortunately... Don't even get me started on corner weighting!
Yeah, you definitely need a buddy in order to take more accurate tire temps.
I feel your pain on alignment and cb. I wound up getting my own equipment used a few years ago. Paid for itself quickly.
05-23-23, 12:35 AM
