350Z reclassed to STU Clutch Modification Question
350Z reclassed to STU Clutch Modification Question
We found out last week that the 350z was reclassed to STU. Other than having to buy a new wheel setup (annoying), I think we are ok, but I have a question.
The rules state no lightened flywheels allowed in STU. I am one of many owners and am not sure if there was any work done to it. It is doubtful that the clutch was redone considering it only has 62K, but is there an easy way to figure out if it has a lightened flywheel. I know one way was to rev it with another 350 stock clutch and compare the gain/drop in RPM's. Any other suggestions? I want to be sure we are within spec more than anything. and I guess if by some chance it does, are we restricted to STM and BSP only?
Thanks!
The rules state no lightened flywheels allowed in STU. I am one of many owners and am not sure if there was any work done to it. It is doubtful that the clutch was redone considering it only has 62K, but is there an easy way to figure out if it has a lightened flywheel. I know one way was to rev it with another 350 stock clutch and compare the gain/drop in RPM's. Any other suggestions? I want to be sure we are within spec more than anything. and I guess if by some chance it does, are we restricted to STM and BSP only?
Thanks!
Chad Riggs
2003 350z
2003 350z
Re: 350Z reclassed to STU Clutch Modification Question
Does it have a peephole on the bellhousing?
Chris Harp
2009 Mazda RX-8 | 2018 Toyota Tundra | 2011 BMW M3
2009 Mazda RX-8 | 2018 Toyota Tundra | 2011 BMW M3
Re: 350Z reclassed to STU Clutch Modification Question
Find Scott Dobler or Brian Flanagan at the Jetport. They know these cars well.
Anyway, there are a lot of people that have bought their car used and/or have had someone else do work on the car. There are probably some cars out there that have some not by the book mods or repairs that are unknown to the owner. If there isn't any reason to suspect that the car has aftermarket parts, I wouldn't put much thought into it.
Anyway, there are a lot of people that have bought their car used and/or have had someone else do work on the car. There are probably some cars out there that have some not by the book mods or repairs that are unknown to the owner. If there isn't any reason to suspect that the car has aftermarket parts, I wouldn't put much thought into it.
'16 FRS - PSTX 97
Re: 350Z reclassed to STU Clutch Modification Question
I am with Steve on this one. Likely a non-issue.
GT350
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- Posts: 8798
- Joined: Fri Dec 05, 2003 11:05 am
Re: 350Z reclassed to STU Clutch Modification Question
everything is a non issue... till you get to the skinnee part of the pointy end .
ETR Pro Class Champion-2002-03-10-11-12-13-14-15
BMW/CCA D-Mod National Road Racing Champion-2011
Pro-Solo Prepared National Champ-2004
Pro-Solo Prepared National Champ-2005
2016 Dodge Challenger SRT 6.4L CAM-C
BMW/CCA D-Mod National Road Racing Champion-2011
Pro-Solo Prepared National Champ-2004
Pro-Solo Prepared National Champ-2005
2016 Dodge Challenger SRT 6.4L CAM-C
Re: 350Z reclassed to STU Clutch Modification Question
yeah - until you start winning contingencies at nat tours/pro solo's nobody is gonna care enough to make a scene over a flywheel.
James Cathers - PFS #192 E92 M3 | TT4 E36 M3
Re: 350Z reclassed to STU Clutch Modification Question
PUT THOSE DAMN TOW-HOOKS ON SONNY!!!John Brown wrote:everything is a non issue... till you get to the skinnee part of the pointy end .
Why do you have to change your current wheel setup? Do you just want to go wider? Which is always better!!!!
Marcus Luttrell - 99' Miata - GLTC/Max3/ST5 #92
Nine Lives Racing - Sales/spell-checker/IT
Nine Lives Racing - Sales/spell-checker/IT
Re: 350Z reclassed to STU Clutch Modification Question
Thanks! I appreciate all the input!
I didn't think it would be a big deal now, but its just something i'd like to know regardless, and make me feel better knowing i am not out of spec.
As far as tires, yes I was thinking wider. I am gonna run the ones i have for now. I am happy and having fun, but can definitely tell that more tire would help. And why not, its just money!
Again, thank you! See you in Chatt.
I didn't think it would be a big deal now, but its just something i'd like to know regardless, and make me feel better knowing i am not out of spec.
As far as tires, yes I was thinking wider. I am gonna run the ones i have for now. I am happy and having fun, but can definitely tell that more tire would help. And why not, its just money!
Again, thank you! See you in Chatt.
Chad Riggs
2003 350z
2003 350z
Re: 350Z reclassed to STU Clutch Modification Question
thrdeye wrote:Does it have a peephole on the bellhousing?
Not sure. Let me look and I will get back.
Chad Riggs
2003 350z
2003 350z
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- Posts: 1822
- Joined: Wed Jan 01, 2014 11:20 pm
Re: 350Z reclassed to STU Clutch Modification Question
I don't know if you've started shopping yet, but I highly recommend BFGoodrich Rivals. You could go up to a 285 in STU.chadZilla wrote: As far as tires, yes I was thinking wider.
Brian Robbins
XP 45
XP 45
Re: 350Z reclassed to STU Clutch Modification Question
max tire width in STU is 245, although you arent limited by rim widthTeufelshund wrote:I don't know if you've started shopping yet, but I highly recommend BFGoodrich Rivals. You could go up to a 285 in STU.chadZilla wrote: As far as tires, yes I was thinking wider.
Ryan Buckingham
2005 STi- STU #20
2004 Z06 Commemorative Edition (gold chain not included)
2005 STi- STU #20
2004 Z06 Commemorative Edition (gold chain not included)
Re: 350Z reclassed to STU Clutch Modification Question
That's for the cheater 4x4's.
285 and unlimited rim for Right Wheel Drive.
285 and unlimited rim for Right Wheel Drive.
'16 FRS - PSTX 97
Re: 350Z reclassed to STU Clutch Modification Question
so im only half wrongsteverife wrote:That's for the cheater 4x4's.
285 and unlimited rim for Right Wheel Drive.
Ryan Buckingham
2005 STi- STU #20
2004 Z06 Commemorative Edition (gold chain not included)
2005 STi- STU #20
2004 Z06 Commemorative Edition (gold chain not included)
Re: 350Z reclassed to STU Clutch Modification Question
So I did a comparison and my rev speed match a stock clutch and no where near one with a lightened flywheel. phew. STU here we come.
Thanks again so much for all the help!
Thanks again so much for all the help!
Chad Riggs
2003 350z
2003 350z