2nd gen: Supernow hubs and longer wheel studs

firzen · 06-25-2010, 07:10 PM

As some of you 2nd gen. owners know, SuperNow from Japan makes replacement front wheel hubs for our cars (http://www.rhdjapan.com/super-now-st...set-fc3s-54461). Last time I checked, their prices were cheaper than stock hub units by a far margin and claim better strength and lightness. (I doubt that last part but whatever)

Since they were economically feasible, I purchased a set to replace by aging stock ones when putting in my new suspension. Unfortunately, the custom coilover setup I built had some rubbing issues, forcing me to use wheel spacers. This inadvertently reduced the usable length of the wheel studs leading me to purchase a set of longer ones by ARP (http://www.summitracing.com/parts/AR...t=ARP-100-7708).

Today I went to the machine shop with the intent of pressing out the stock-length studs on the SuperNow hubs when I noticed that the knurled portion was different from the stock size.

Checking on the interweb, I learned that this odd size used by SuperNow only matches the studs used by the Celica GTS. Unfortunately, I cannot find longer studs for this application. (http://www.arp-bolts.com/catalog/Cat...talog_0066.pdf)

So now I am thinking- should I machine some new holes to press in the ARP studs I already have or just redo my stock hubs. If I choose the latter, I'll need to redo the bearings too.

Any other suggestions would be appreciated.

Peace.

LunchboxCritter · 06-25-2010, 09:29 PM

What about having the machine shop make you some studs that are longer and match the SuperNow one's.

josh18_2k · 06-25-2010, 10:37 PM

i would jsut call ARP and ask them. the knurl is all that matters, so just ask for 2.5" studs with a matching knurl. the only 563 knurl i found in google is some moroso studs that say "dont use spacers" (aka poor quality)

***TitaniumTT*** · 06-26-2010, 08:36 AM

If that knurl purtrudes the hub and makes contact with the spacer, that would be bad. But if the spacer can fit over the knurl, you should be OK.

THe other thing to do could be to find an even longer stud and shorten it.

Or machine the knurl down.

josh18_2k · 06-26-2010, 02:49 PM

dont forget about the brake rotor

firzen · 06-27-2010, 09:38 PM

Quote:

Originally Posted by LunchboxCritter

What about having the machine shop make you some studs that are longer and match the SuperNow one's.

Seems more of a pain to machine five studs than drill five holes, methinks.

Quote:

Originally Posted by josh18_2k

i would just call ARP and ask them. the knurl is all that matters, so just ask for 2.5" studs with a matching knurl. the only 563 knurl i found in google is some moroso studs that say "don't use spacers" (aka poor quality)

So you think ARP wouldn't mind making custom studs? I suppose I could look into the Moroso ones- I need to double check the dimensions to make sure its safe. Thanks.

Quote:

Originally Posted by TitaniumTT

If that knurl protrudes the hub and makes contact with the spacer, that would be bad. But if the spacer can fit over the knurl, you should be OK.

The other thing to do could be to find an even longer stud and shorten it.

Or machine the knurl down.

Quote:

Originally Posted by josh18_2k

dont forget about the brake rotor

The 0.5630" and 0.5090" refers to respective diameters of the SuperNow and ARP studs. I realize that the diagram may be misleading. Sorry for the confusion, boys.

***TitaniumTT*** · 06-27-2010, 10:01 PM

Ah, yeah, I thought you were talking about the length of the knurl

josh18_2k · 06-28-2010, 01:03 AM

not custom studs... but they could prolly find a stud in production that works for you. chances are something out there uses the same knurl

firzen · 06-28-2010, 08:08 PM

Quote:

Originally Posted by josh18_2k

not custom studs... but they could prolly find a stud in production that works for you. chances are something out there uses the same knurl

I'll call them tomorrow I guess. When I checked their catalog, the Celica was the only model with the proper knurl dimensions but the length of the studs isn't any longer.

firzen · 07-05-2010, 01:59 AM

Update: So after a few phone calls and talking to people at the machine shop, I have decided to go ahead with my original idea of drilling the ten holes. It will be a bit costly (about $150) and time consuming to set up everything but I think it will be for the better.

I had found several other studs with the correct knurl diameter but those would require me purchase another set of lug nuts as they are of a different thread size and pitch. The price of this option would be under $100 including the new lug nuts but seems to be too much hassle.

The other option I had was to use studs for another Mazda (I don't remember which one) but that would require me to purchase 3 sets of studs (They are sold in packs of 4). These would have the desired total length and 12x1.5 thread but the price for three sets ($120) would bring me close to price for drilling new holes.

firzen · 07-16-2010, 03:57 PM

Update: I went with the machining and had new holes drilled into the hubs. The pictures below speak for themselves.

I noticed that the the hub is about the same weight as the stock one, and regret not weighing everything out right now. This is contrary to SuperNow's claims that their product is lighter... oh well.

I am also a little concerned about the strength of these hubs since the lip where the wheel studs go in has a smaller thickness than the stock setup. I am pleased however with the fact that the races are MUCH easier to reach compared to the stock design.

The installed system w/ wheel on. Those are the long gorilla nuts. The aforementioned spacer is also behind the wheel.

06-25-2010, 07:10 PM	#1
firzen Rotary Fanatic Join Date: Mar 2008 iTrader: (2) Posts: 231 Rep Power: 17	2nd gen: Supernow hubs and longer wheel studs As some of you 2nd gen. owners know, SuperNow from Japan makes replacement front wheel hubs for our cars (http://www.rhdjapan.com/super-now-st...set-fc3s-54461). Last time I checked, their prices were cheaper than stock hub units by a far margin and claim better strength and lightness. (I doubt that last part but whatever) Since they were economically feasible, I purchased a set to replace by aging stock ones when putting in my new suspension. Unfortunately, the custom coilover setup I built had some rubbing issues, forcing me to use wheel spacers. This inadvertently reduced the usable length of the wheel studs leading me to purchase a set of longer ones by ARP (http://www.summitracing.com/parts/AR...t=ARP-100-7708). Today I went to the machine shop with the intent of pressing out the stock-length studs on the SuperNow hubs when I noticed that the knurled portion was different from the stock size. Checking on the interweb, I learned that this odd size used by SuperNow only matches the studs used by the Celica GTS. Unfortunately, I cannot find longer studs for this application. (http://www.arp-bolts.com/catalog/Cat...talog_0066.pdf) So now I am thinking- should I machine some new holes to press in the ARP studs I already have or just redo my stock hubs. If I choose the latter, I'll need to redo the bearings too. Any other suggestions would be appreciated. Peace.

06-25-2010, 09:29 PM	#2
LunchboxCritter Simply Rotarded Join Date: Jan 2009 Location: Florida iTrader: (0) Posts: 166 Rep Power: 16	What about having the machine shop make you some studs that are longer and match the SuperNow one's. __________________ LunchboxCritter - 91 NA to J-Spec TII - 88 FC Vert - 04 Rx8 Disclaimer: I am not a mechanic, and I did not sleep at a Holiday Inn. DO NOT TRY THIS AT HOME!!! Last edited by LunchboxCritter; 06-25-2010 at 09:32 PM..

06-25-2010, 10:37 PM	#3
josh18_2k Rotary Fanatic Join Date: Feb 2008 Location: Gresham, OR iTrader: (0) Posts: 473 Rep Power: 17	i would jsut call ARP and ask them. the knurl is all that matters, so just ask for 2.5" studs with a matching knurl. the only 563 knurl i found in google is some moroso studs that say "dont use spacers" (aka poor quality) __________________ Last edited by josh18_2k; 06-25-2010 at 10:49 PM..

06-26-2010, 08:36 AM	#4
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	If that knurl purtrudes the hub and makes contact with the spacer, that would be bad. But if the spacer can fit over the knurl, you should be OK. THe other thing to do could be to find an even longer stud and shorten it. Or machine the knurl down. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

06-26-2010, 02:49 PM	#5
josh18_2k Rotary Fanatic Join Date: Feb 2008 Location: Gresham, OR iTrader: (0) Posts: 473 Rep Power: 17	dont forget about the brake rotor __________________

06-27-2010, 10:01 PM	#7
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	Ah, yeah, I thought you were talking about the length of the knurl __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

06-28-2010, 01:03 AM	#8
josh18_2k Rotary Fanatic Join Date: Feb 2008 Location: Gresham, OR iTrader: (0) Posts: 473 Rep Power: 17	not custom studs... but they could prolly find a stud in production that works for you. chances are something out there uses the same knurl __________________

07-05-2010, 01:59 AM	#10
firzen Rotary Fanatic Join Date: Mar 2008 iTrader: (2) Posts: 231 Rep Power: 17	Update: So after a few phone calls and talking to people at the machine shop, I have decided to go ahead with my original idea of drilling the ten holes. It will be a bit costly (about $150) and time consuming to set up everything but I think it will be for the better. I had found several other studs with the correct knurl diameter but those would require me purchase another set of lug nuts as they are of a different thread size and pitch. The price of this option would be under $100 including the new lug nuts but seems to be too much hassle. The other option I had was to use studs for another Mazda (I don't remember which one) but that would require me to purchase 3 sets of studs (They are sold in packs of 4). These would have the desired total length and 12x1.5 thread but the price for three sets ($120) would bring me close to price for drilling new holes.

07-16-2010, 03:57 PM	#11
firzen Rotary Fanatic Join Date: Mar 2008 iTrader: (2) Posts: 231 Rep Power: 17	Update: I went with the machining and had new holes drilled into the hubs. The pictures below speak for themselves. I noticed that the the hub is about the same weight as the stock one, and regret not weighing everything out right now. This is contrary to SuperNow's claims that their product is lighter... oh well. I am also a little concerned about the strength of these hubs since the lip where the wheel studs go in has a smaller thickness than the stock setup. I am pleased however with the fact that the races are MUCH easier to reach compared to the stock design. The installed system w/ wheel on. Those are the long gorilla nuts. The aforementioned spacer is also behind the wheel.