Powerflex sells two variants, but in their details there is no difference?
Race variant is harder / more NVH?
normal?
Powerflex Front Wishbone Rear Bush Caster Adjust for Toyota GR Yaris (2020-2024) Black Series wishbone bush trailing arm bush PU bush exhaust mount PFF76-902G
www.powerflex-deutschland.de
race
Powerflex Front Wishbone Rear Bush Caster Adjust for Toyota GR Yaris (2020-2024) Black Series wishbone bush trailing arm bush PU bush exhaust mount PFF76-902GBLK
www.powerflex-deutschland.de
Wonder which approach is better. this anti lift kit or DNA upper strut mounts (they provide option for added caster too, actually even more than a mere bush).
Cost is more or less the same as bush install requires press.
DNA top mount
The replacement of the rubber with a ball joint allows to increase the steering precision. Our kit allows you to adjust the camber angle up to around -3° too and
www.dna-racing.it
Yes, blk is harder - more nvh. Not sure its an antilift tho, Whiteline has a "ring" which can be antilift or antidive, depending on where you place it, above or below bushing.
Arm is kinda thin and soft, maybe rather swap top mounts?
Fair points, both. Is someone preparing his Black Friday shopping,
@Michael Knight ?
I was wondering myself about the difference between
PFF76-902G and PFF76-902GBLK. Powerflex have confirmed that these two
are made to the same spec, with both using their 95A durometer material. So while Powerflex often offer two or more variants, with the Black one being indended for track use as
@MarkoS mentions, in this case there are two code variants but just one product really.
@Michael Knight we seem to be going through the same thought process also with reference to anti-lift caster kit vs solid top mounts. My thoughts so far are:
- Cost: I think that the DNA top mounts solution would be more expensive in my case. The parts are significantly more expensive to start with, both will also require alignment and I expect fitment for the caster kit to not cost much (based on 30 minutes labour stated on the Workshop Fitting tab on this Pumaspeed listing). It may be a different story if one is looking to get camber through the top mounts too, but I already have front camber bolts.
- NVH: Based on feedback mainly by @MarkoS, I expect caster kits to introduce some NVH (also based on my view that Whiteline bushes tend to be on the harder side & the Powerflex material is also on the harder side at 95A). But I haven't heard from anyone that it's significant, let alone unbearable. However, with the DNA solid top mounts, I would expect more significant NVH. That's based on feedback by eg @DeanoC:
Had the Eventuri intake and Triple R Composites splitter fitted today. Looking good 😍
www.gr-zoo.com
- Understeer: I expect that, as I understand @azet mentions above, an anti-lift caster kit provides both anti-lift and added caster (& therefore dynamic camber) to contribute more towards eliminating understeer than solid top mounts (that would only give me added caster in that respect, as I see it).
All in all, if your aim is to eliminate understeer, solid top mounts might be an overkill offering only a partial solution, with these being more suited to the track and to solve issues that are almost exclusive to track use, ie failure of stock top mounts, major suspension component changes (not just geometry) requiring the feature of adjustability that the DNA top mounts bring, strut clearance when going for a lot of negative camber, etc.
A potential drawback of anti-lift caster kits is the limited caster these can add, ie max 0.5 degree. However, with caster too, there can be too much of a good thing, also as pointed out at 3:56 of:
Disadvantages of adding (lots of) caster (possible through the DNA top mounts but not through anti-lift caster kits) that I've seen mentioned include minor implications like suspension not engaging in certain circumstances (eg lower-speed bumps), as
@MarkoS has posted, as well as giving the car such a hard time (when combined with higher grip tyres) that the power steering can't cope (giving the driver a scare mid-corner).
So, for road use, it might be that the added caster that anti-lift kits provide is enough. After all, I see adding caster as a bit controversial because experts with extensive modifications, like
@Phil1291, haven't touched caster or, like
@DrSetup, saw no benefit from it.
As to whether the Powerflex caster kit has anti-lift properties, some retailers who don't just copy-paste texts from Powerflex mention anti-lift, eg:
PowerFlex Front Wishbone - Rear Caster Bushes for Toyota Yaris and Corolla GR - Antilift Kit allow 10days+ for ordering/delivery as not always on shelf PFF76-902G - Front Wishbone Rear Bush has been designed around our unique on-car adjustable Nylon/Polyurethane Ball-Joint combination for more...
www.ngarage.com.au
I should hopefully have clarity straight from Powerflex soon. I'd love it to offer anti-lift too, as I feel that Powerflex products are more refined than Whiteline ones.
