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Saisei Knuckles

Hey guys, so this is an ongoing project that I’ve been doing, and what brought me to take this on was the low front end support we have. We have

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Old 04-01-2019, 03:56 PM   #1 (permalink)
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Default Saisei Knuckles

Hey guys, so this is an ongoing project that I’ve been doing, and what brought me to take this on was the low front end support we have.

We have awesome front upper control arms (FUCA) by SPL and voodoo, and then if we want to go further with steering it’s all full on conversions; Part Shop Max, Wisefab, Voodoo.

T-demand offers an adjustable FUCA, along with a fully adjustable - bolt on- lower control arm (LCA) but at a very expensive cost.

There’s also some DIY mods out there as well but don’t do enough, and doesn’t solve the ackerman issue when getting that 1-2 more degrees.

*Cue in my Saisei knuckles*

"Saisei" is Japanese for "rebirth", rebirth knuckle if you will, and I will be doing a few variations.

Version 1-3 will be mainly for grip setups / stance culture for tower clearance for those super low ride heights.

Version 4 will incorporate an overhaul of the outer tie rod (OTR) point, and will test a few variations before the final result. More than likely an offset spacer may be necessary to reduce the ackerman. (Part shop max, also just announced their upcoming steering rack mount, which pushes the rack forward, eliminating the need of offset spacers)
However the purpose of my project is to obtain better angle, with good ackerman, at less cost with the least parts changed.

The jig will work on the knuckles for the following chassis


By factory the upper arm is angled upward in comparison to the lower arm. At stock ride height, suspension travel and camber change is fine, but when lowered these values change and can lead to unwanted characteristics depending on your goals.

• Shortened 30mm bringing the upper and lower arms in parallel, and away from hitting the chassis.
• TIG welded and gusseted on three sides to ensure strength to out-stand the abuse track driving: grip and drift.
• Optional static camber / KPI setting.
V1 - 30mm shortened (~ 1* camber correction)
V2 - 30mm shortened (~ .5* camber correction & scrub reduction)
V3 - 30mm shortened (neutral camber & further scrub reduction)


Started off with a couple of cores to ensure consistency


Super overkill jigs to prevent any deformation




Sectioned and prepped for TIG welding. Shown here is V1.0


Gussets


Super hot TIGs




Painted










For those interested in seeing the background work, you can follow my Instagram: @hardparked_z34

I will be posting in here as well, but at lower volume. I will also be offering these for sale in the forum once AK responds to me about the “vender license”
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Last edited by nghtlurkr; 03-27-2020 at 09:44 AM.
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Old 04-01-2019, 04:19 PM   #2 (permalink)
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I will also be offering these for sale in the forum once AK responds to me about the “vendor license”
Well I guess that means they won't be for sale in the forum then


No but seriously... phenomenal work. Love the innovation. Kudos
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Old 04-01-2019, 06:01 PM   #3 (permalink)
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The track rat in me is going road race set up hmmmmmm.

The welding engineer in me is going weld prep, filler wire, and a few other things.

The mechanical engineer in me is digesting the spec's.
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Old 04-01-2019, 08:45 PM   #4 (permalink)
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Super awesome we're getting this addition to the Z34 market

it seems like alot of japanese mfg skipped the Z34. Went from Z33 to GTR and just never bothered to go back

looking at Garage Mak and Rocket Bunny
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Old 04-01-2019, 08:57 PM   #5 (permalink)
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Originally Posted by JARblue View Post
Well I guess that means they won't be for sale in the forum then


No but seriously... phenomenal work. Love the innovation. Kudos
Haha! I checked his last activity and it was two months ago!

Thank you, but this is no innovation, its derived from other platforms! but dont see it offered publicly specifically for z34

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Originally Posted by Rusty View Post
The track rat in me is going road race set up hmmmmmm.

The welding engineer in me is going weld prep, filler wire, and a few other things.

The mechanical engineer in me is digesting the spec's.
Stay hungry!

Quote:
Originally Posted by OptionZero View Post
Super awesome we're getting this addition to the Z34 market

it seems like alot of japanese mfg skipped the Z34. Went from Z33 to GTR and just never bothered to go back

looking at Garage Mak and Rocket Bunny
Tell me about it, but from an engineering stand point, if you compare the specs of the z33 and and the z34 knuckle, the z34 knuckle was improved, not only structurally, but for feedback for the driver.

Ive been bugging Garage Mak to make z34 aero for awhile now. Cant say i'm a fan of rocketbunny for our wide cars already.
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Old 04-02-2019, 09:41 AM   #6 (permalink)
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Thank you, but this is no innovation, its derived from other platforms! but dont see it offered publicly specifically for z34
Innovation to convert a product from an existing platform to another platform that isn't well represented in the marketplace is still innovation
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Old 04-02-2019, 11:29 AM   #7 (permalink)
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Super awesome we're getting this addition to the Z34 market

it seems like alot of japanese mfg skipped the Z34. Went from Z33 to GTR and just never bothered to go back

looking at Garage Mak and Rocket Bunny
Meh... I think there's plenty of overfender solutions for the Z34, and the Rocket Bunny front looks the same on just about every car minus the S14 and FD3S conversions.

That Garage MAK wing though... why hasn't anyone made one that mounts similar to that!?!? Looks sooooo much better than the middle of the hatch mounts (no offense to APR/Voltex owners).
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Old 04-02-2019, 11:53 AM   #8 (permalink)
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Install photos






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Old 04-02-2019, 02:45 PM   #9 (permalink)
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These should work with all 370s as well as G37s (including AWD); granted your tire size does not interfere.
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Old 04-02-2019, 04:18 PM   #10 (permalink)
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Originally Posted by zer099 View Post
These should work with all 370s as well as G37s (including AWD); granted your tire size does not interfere.
Correct you are, actually Iíve done my research and found out these fit a lot more than just 370z, and g37...

Hereís my list, which Iíll add to the to OP.


It seems midway through 2013, they revised the knuckle (hence the new part number)
My theory is that they cut out some meat or redesigned it to make it more universal for all the other models. Resulting in lower production cost in having one knuckle, vs multiple ones.
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Old 04-03-2019, 01:13 AM   #11 (permalink)
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Or you could just go billet ............ as these fit

http://www.brypar.com/shop/prime-r/n...front-upright/

I'm with Rusty - not sure about welding a cut/shut (even with bracing as shown) in a race car going thru T1 at Philip Island GP circuit or thru McPhillamy at Bathurst

Rep for having a go though ....
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Old 04-03-2019, 07:30 AM   #12 (permalink)
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Or you could just go billet ............ as these fit

http://www.brypar.com/shop/prime-r/n...front-upright/

I'm with Rusty - not sure about welding a cut/shut (even with bracing as shown) in a race car going thru T1 at Philip Island GP circuit or thru McPhillamy at Bathurst

Rep for having a go though ....
I am glad I didnt have a swig of my coffee when I clicked on that link and saw the price!
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Old 04-03-2019, 08:54 AM   #13 (permalink)
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I am glad I didnt have a swig of my coffee when I clicked on that link and saw the price!

But if you need it. It's going to cost.
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Old 04-03-2019, 08:59 AM   #14 (permalink)
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After the conversion from AUS to US it is not as bad but something I hope I dont ever need to buy.
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Old 04-03-2019, 09:11 AM   #15 (permalink)
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Don’t forget the extra 2-3k+ USD GTR brake conversion to go with that knuckle
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