SSB Designs Front Roll Center Correction Knuckles - 1.25 inch option
Apr 3, 2018, 08:25 AM
#16
The photo is deceiving. The portion that appears to be within 1/4" of the disk is actually "below" the disk and therefore is actually quite a bit further from the disk than it appears. However, I am contemplating wrapping the cable with reflective tape for an extra measure of temperature control. I could also put a zip tie on the cable to the left side of the cable mount to make the cable a bit more taught to pull it further way. Also, if you look at how cable lines up with the plane of knuckle facing the disk, its clear that the cable is about the same distance from the disk as stock. The difference is of course the heat shield.
Apr 3, 2018, 08:28 AM
#17
235/40-17 on 17x9 +32 mm offset. They are a bit shorter than the stock 235/45-17 size. Ride height is 25.5" from ground to front fender and 24.75" from ground to rear fender. I measure at the very lowest part of the top of the fender if that makes sense. My fenders are not rolled so the lip is slightly lower than where the body starts to curve inward to make the fender lip. The better number to compare is the centerline of the wheel to the fender. That's 13.5" front and 12.75" rear. Based on the info I have, this is about 1.25" lower at the front and 1" lower at the rear. The rear is pretty squat to provide near stock rake. With Dallas' camber/caster plates, I'm getting nearly 6 degrees of caster.
Apr 3, 2018, 08:37 AM
#18
The sensor is in the same orientation though just a little lower than the OEM location. My original set had the sensor vertical but I re-clocked these because the flat on the sensor just seemed like the right thing to do even though we havent had any issues on the older version. I am adding a ABS tiedown location on the top of the strut mount per Nimpocs feedback which is just a little further inboard than Mychailo was able to do his. Would be easy enough for anyone else to drill their own older versions as well, but future parts will already have it drilled.
Apr 6, 2018, 07:51 PM
#21
I finally had another chance to evaluate the knuckles, and my previous impressions are unchanged. The car bites much better at the front, notably at hard turn-in, it leans much less, and it generally feels much more like how I imagine a true sports car should feel. I do think that the SSB caster plates are a great item to do at the same time. The extra 1.5 deg of caster can be felt in the steering wheel, and I'm sure it helps with camber during turns.
So I think that knuckles in combination with the caster plates are perhaps the best handling upgrade that I've done to my Evo. The reality of course is that several upgrades - selected bushings, coilovers, SSB caster plates, perhaps RSB - need to be done all at once to get the most out of these knuckles.
So I think that knuckles in combination with the caster plates are perhaps the best handling upgrade that I've done to my Evo. The reality of course is that several upgrades - selected bushings, coilovers, SSB caster plates, perhaps RSB - need to be done all at once to get the most out of these knuckles.
Last edited by mrfred; Apr 7, 2018 at 02:37 PM.
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alpinaturbo (Apr 9, 2018)
Jun 7, 2018, 02:34 PM
#23
Just curious Mr Fred if you also have the Perrin PSRS bushings on the front LCA plus these caster plates?
It was a huge difference when I put the PSRS on my car with 9 mr struts and GTWorx springs... Now Im after a little lower on coilovers but was looking for more RC correction than the whiteline provided. having the adjustable bump steer is nice too, if that's built into this, doesnt look like it'd be hard to fab some bushings if it isn't.
It was a huge difference when I put the PSRS on my car with 9 mr struts and GTWorx springs... Now Im after a little lower on coilovers but was looking for more RC correction than the whiteline provided. having the adjustable bump steer is nice too, if that's built into this, doesnt look like it'd be hard to fab some bushings if it isn't.
Jun 7, 2018, 04:28 PM
#24
Once you add caster the whiteline kit doesnt fix the bumpsteer. And actually, just using the WL lower ball joint (only 5mm of correction, or 15mm of RC change) with added caster works pretty well for bumpsteer. Adding the WL tie rod (also 5mm longer) increases bumpsteer.
But the SSB bumpsteer adjustment range is specifically tailored for the uprights built in ball joint movement, 3.5-7.5 deg of caster, and upwards of 10mm of added ball joint correction. So take all those combinations with the worst conditions and thats how I determined the range for bump steer adjustment.
And Mychailo has the Duroball offset bushings, very similar to the PSRS but I think maybe has some rubber in them and a little less offset?
But the SSB bumpsteer adjustment range is specifically tailored for the uprights built in ball joint movement, 3.5-7.5 deg of caster, and upwards of 10mm of added ball joint correction. So take all those combinations with the worst conditions and thats how I determined the range for bump steer adjustment.
And Mychailo has the Duroball offset bushings, very similar to the PSRS but I think maybe has some rubber in them and a little less offset?
Jun 9, 2018, 07:48 PM
#27
Just curious Mr Fred if you also have the Perrin PSRS bushings on the front LCA plus these caster plates?
It was a huge difference when I put the PSRS on my car with 9 mr struts and GTWorx springs... Now Im after a little lower on coilovers but was looking for more RC correction than the whiteline provided. having the adjustable bump steer is nice too, if that's built into this, doesnt look like it'd be hard to fab some bushings if it isn't.
It was a huge difference when I put the PSRS on my car with 9 mr struts and GTWorx springs... Now Im after a little lower on coilovers but was looking for more RC correction than the whiteline provided. having the adjustable bump steer is nice too, if that's built into this, doesnt look like it'd be hard to fab some bushings if it isn't.
There's really no comparison in RC correction between the Whiteline kit and the SSB knuckles. Whiteline is more about good intentions while SSB is the real deal. The SSB kit does have adjustable steering rod positioning, so the bumpsteer can be zero'ed out for any setup. Its a very cool design.
Worth every penny they cost. :-)
Jun 12, 2018, 09:43 AM
#30
I do have offset bushings in my front control arm. I was able to pick up 1 deg caster (4.5 deg) over stock when using near-stock rake. With the SSB camber plates, I think I'm around 6 deg now. I can definitely feel the difference.
There's really no comparison in RC correction between the Whiteline kit and the SSB knuckles. Whiteline is more about good intentions while SSB is the real deal. The SSB kit does have adjustable steering rod positioning, so the bumpsteer can be zero'ed out for any setup. Its a very cool design.
Worth every penny they cost. :-)
There's really no comparison in RC correction between the Whiteline kit and the SSB knuckles. Whiteline is more about good intentions while SSB is the real deal. The SSB kit does have adjustable steering rod positioning, so the bumpsteer can be zero'ed out for any setup. Its a very cool design.
Worth every penny they cost. :-)
Are you using the stock rubber bushing on the front of the lower control arm or a spherical, if so which spherical did you go with?