Autocross STH Class thread!

Xtelotatichl

Senior Member
First Name
Cha
Joined
Jan 1, 2018
Threads
9
Messages
304
Reaction score
231
Location
USA
Vehicle(s)
Civic si
Country flag
So with my current mods, I fall into the STH class. They are...

CAI
Stage 1 tune Vit style
Type R RSS
Front strut brace

This past weekend I finally got around to installing my underbody W brace...so the question now is...does that take me out of the STH class?

See the pic for reference.
Honda Civic 10th gen Autocross STH Class thread! 8026F757-A48C-4626-85DE-5646FFEE2EC8
Sponsored

 

5inn

Senior Member
Joined
Aug 28, 2017
Threads
31
Messages
516
Reaction score
335
Location
MA
Vehicle(s)
'21 Type R
Country flag
This past weekend I finally got around to installing my underbody W brace...so the question now is...does that take me out of the STH class?
Correct, I believe these are not legal in STH. I'm not sure what class they are legal in.
 
OP
OP

Xtelotatichl

Senior Member
First Name
Cha
Joined
Jan 1, 2018
Threads
9
Messages
304
Reaction score
231
Location
USA
Vehicle(s)
Civic si
Country flag
Correct, I believe these are not legal in STH. I'm not sure what class they are legal in.
I still ran in STH class. Didn’t cause a fuss because I’m still new to all this and I have crap for tires so I’m nowhere near being a threat to the fastest people in the class
 

Pumpkinking85

Member
First Name
Nigel
Joined
Aug 1, 2018
Threads
0
Messages
9
Reaction score
18
Location
Catskills, new york
Vehicle(s)
17 Civic si coupe
Country flag
I'll be in sth this year. I can't seem to find, or at least decipher the rules about exhaust wrap in sth. Is it allowed or no? I figured I'd ask here instead of opening up a new thread
 


OP
OP

Xtelotatichl

Senior Member
First Name
Cha
Joined
Jan 1, 2018
Threads
9
Messages
304
Reaction score
231
Location
USA
Vehicle(s)
Civic si
Country flag
Exhaust wrap? I know catback exhaust is allowed. What are you referring to exactly
 

burglar

Senior Member
First Name
Matt
Joined
Oct 29, 2018
Threads
3
Messages
124
Reaction score
97
Location
Troy, Mi
Vehicle(s)
Civic
Country flag
D. Exhaust manifolds, headers, downpipes, and associated EGR tubes
may be replaced with alternate units. Exhaust exit may be relocated
provided it meets Section 3.3.3.B.16. Relocation of the oxygen sensor
on the header is permitted. Exhaust heat shields which cover only, and
attach solely to, these parts may also be replaced, removed, or modified.
All other exhaust heat shields may be modified the minimum amount
necessary to accommodate allowed alternate exhaust components.
Mounting brackets/hardware which serve no other purpose are considered
part of the exhaust components.
"Alternate unit" in this can can be one with header wrap on it. Just mind section E with the catalytic converter rules.
 

burglar

Senior Member
First Name
Matt
Joined
Oct 29, 2018
Threads
3
Messages
124
Reaction score
97
Location
Troy, Mi
Vehicle(s)
Civic
Country flag
Also yes, since that brace pictured ties the subframe to the chassis, it's not allowed in STH.

One that went from the A-arm mount to A-arm mount only would be legal, though.
 

Pumpkinking85

Member
First Name
Nigel
Joined
Aug 1, 2018
Threads
0
Messages
9
Reaction score
18
Location
Catskills, new york
Vehicle(s)
17 Civic si coupe
Country flag
"Alternate unit" in this can can be one with header wrap on it. Just mind section E with the catalytic converter rules.
Thanks I couldn't really decipher the rules about the wrap, and I know if it doesn't specifically say it can be added then it's not allowed. I'll be running stock cat but I wanted to put a turbo blanket on and exhaust wrap the stock cat and downpipe. I also track the car and wanted to tame under hood heat a bit but wasn't sure if it would bump me out of sth.
 

RiceFingaz

Senior Member
Joined
Jul 10, 2017
Threads
5
Messages
79
Reaction score
69
Location
California
Vehicle(s)
2017 Civic Si
Vehicle Showcase
1
Country flag
My 2nd event ever ran STH at National Tour at Crow's. Definitely had to de mod the car just to make it in STH.
I need more seat time... I was slow AF compared to Ford RS and such.

Honda Civic 10th gen Autocross STH Class thread! IMG_20190428_085132_556
 


Burt

Senior Member
Joined
Jul 30, 2018
Threads
3
Messages
143
Reaction score
159
Location
St. Albans, WV
Vehicle(s)
2006 Civic LX, 1992 Mazda Miata
Country flag
When I have the time/money to start modding the Civic, I'll be tempted to pass HS and jump straight into STH. I know they're an older compound and not as quick, size for size as the RE71 and Rivals, but has anybody compared a 255 of either of those to a 275 Toyo R1R on these cars? Sticking with 17s and doing a 275/245 reverse stagger seems like it would be awesome if it fits/is faster than a 255 based setup
 

burglar

Senior Member
First Name
Matt
Joined
Oct 29, 2018
Threads
3
Messages
124
Reaction score
97
Location
Troy, Mi
Vehicle(s)
Civic
Country flag
265 is max tire width, 9" is max wheel width for STH (2wd). Always take compound over size, I wouldn't waste time with the Toyo if there was any expectation of being competitive.

Also, only the Si (17-18) is currently listed in STH. The catch-all lets in all non-Type R 10th gen Civics for local events, but it must be explicitly listed for national competition, so write your letter. I don't see any good reason to keep any HS based 10th Gen out.
 

snguyen130

abluefk7
First Name
Steven
Joined
Jan 28, 2019
Threads
8
Messages
35
Reaction score
81
Location
Anchorage, AK
Vehicle(s)
2018 Civic Hatchback Sport
Vehicle Showcase
1
Country flag
I was wondering if a Sport Hatchback with a Greddy Exhaust and KTuner will be placed in STH?
 

SlowAP2

Senior Member
First Name
Terry
Joined
May 12, 2019
Threads
2
Messages
92
Reaction score
41
Location
FL
Vehicle(s)
19 SI, 04 S2K,
Country flag
I was wondering if a Sport Hatchback with a Greddy Exhaust and KTuner will be placed in STH?
Locally yes. But as Burgler said, it needs to be listed as its own line for national events
 

RiceFingaz

Senior Member
Joined
Jul 10, 2017
Threads
5
Messages
79
Reaction score
69
Location
California
Vehicle(s)
2017 Civic Si
Vehicle Showcase
1
Country flag
I raced in Tour in STH.
But locally I chose to race up a class in SMF.
Sponsored

 


 


Top