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heavy85 06-24-2020 01:39 AM

Adjustable tie rods?
 
Anyone make quality adjustable tie rods for the 8? Need to fix bumpsteer issues and google search is only coming up with questionable quality options (Megan, etc).

thanks
Cameron

Loki 06-24-2020 11:15 AM

That's an unusual solution to an unusual problem on these cars. It's a double wishbone suspension, so bump steer in stock configuration shouldn't be that much of a problem? That's why nobody makes a kit.
You can try to find one off a NC Miata since most suspension components are interchangeable, but even there, it's really only a problem when people start swapping engines and moving steering components around.

TeamRX8 06-24-2020 11:35 AM

I sort of agree, with the exception of extreme lowering maybe, geometry is not likely to be perfect at what would have been the extreme end of the travel range.

only set from JP that I know of is SuperNow

saw some the other day and now can’t remember where. I thought these seemed a bit better than some, but the biggest overall issue is how cheap or not they went on the heim joints. Those can always be replaced with higher quality if they wear quickly though. Good heims cost $$, but a high initial price is no guarantee you’re getting a quality heim end unless you can confirm the exact part being supplied. Most of these companies are probably supplying dirt cheap economy heims from overseas.

https://www.phase2motortrend.com/pro...potrrx8-ht.htm

Federighi 06-24-2020 11:39 AM

I use the AE kit. SuperNow is high quality stuff too. Good luck :)

https://www.nengun.com/autoexe/sports-tierod-end

heavy85 06-24-2020 08:39 PM


Originally Posted by Loki (Post 4922124)
it's really only a problem when people start swapping engines and moving steering components around.

This.

Ordered some of the P2M ones as at least the tube is steel and it uses castle nuts for safety. As said will upgrade the rod end as needed but at least the basic starting point is there. Thanks guys.

TeamRX8 06-24-2020 09:16 PM

well there was also the Hinson kit for an engine swap

John V 06-25-2020 08:26 AM


Originally Posted by Loki (Post 4922124)
That's an unusual solution to an unusual problem on these cars. It's a double wishbone suspension, so bump steer in stock configuration shouldn't be that much of a problem? That's why nobody makes a kit.
You can try to find one off a NC Miata since most suspension components are interchangeable, but even there, it's really only a problem when people start swapping engines and moving steering components around.

Cameron's car has an LS swap, so the steering rack is probably in a different place.

Cameron, let me know what the P2M stuff looks like if you get it. I've been contemplating picking up their control arms but was concerned about quality.

TeamRX8 06-26-2020 04:53 PM

you might ask this company about their chromoly front arms, no pics on the website

https://racefab.co.nz/RX8.html

hufflepuff 06-27-2020 09:04 AM

i asked Mazdatrix, who races their RX8 pretty seriously. They use megan racing and have not had any issues with them. They seem solidly built: heavy components and quality looking joints. i know megan isn't the first name to come to mind for quality, but in this case their could be worth a look.

hufflepuff 06-27-2020 09:05 AM

PS, i've removed my suspension and plotted bump steer in the rear throughout range of motion/travel. RX8 gets very, very little bump steer in the rear at reasonable travel (centering around 13.5" ride height)


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