The Official 370Z Autocross Thread

[Masterbeatty]

NO BFG sport comp 2's, they are fine for DD and ok for autox street tire classes. But I need better tires to be more competitive. My club has a new class PRO S, which is any mods but you need street tires UTQG rating no lower than 200 and mine are 300 and almost bald.

[FPenvy]

Originally Posted by Masterbeatty

NO BFG sport comp 2's, they are fine for DD and ok for autox street tire classes. But I need better tires to be more competitive. My club has a new class PRO S, which is any mods but you need street tires UTQG rating no lower than 200 and mine are 300 and almost bald.

I read about that class the other day. also how the RE-71's are rated 200 but no one thinks that is even remotely true based on the rapid wear during auto-x lol

[Masterbeatty]

So far I have yet to see them of know anyone that has used them. But I also found out yesterday I need to upgrade my brakes, as the ladder half of the day I was experiencing brake fade. So im thinking of the Z1 upgrade package for my base brakes or maybe just the fronts for now. Mine have 32K on them and after yesterday im pretty sure I glazed the heck out of them. RRRR, race car problems.

[FPenvy]

Originally Posted by Masterbeatty

So far I have yet to see them of know anyone that has used them. But I also found out yesterday I need to upgrade my brakes, as the ladder half of the day I was experiencing brake fade. So im thinking of the Z1 upgrade package for my base brakes or maybe just the fronts for now. Mine have 32K on them and after yesterday im pretty sure I glazed the heck out of them. RRRR, race car problems.

here's a thread with some info from AK and another I believe who ran them already.

RE-71R experiment?

[Rusty]

Originally Posted by cjwsrt6

I'd go back, me personally I would not apologize But be aware some events have a sound check, something like 98 dB at 50 feet I believe.

Anyone experience clutch pressure loss while autocrossing? I have an aftermarket exhaust and I've heard the clutch line runs next to the exhaust. Any luck with the Z1 stainless line and higher temp fluid?

Wrap your clutch line with insulation.

[03threefiftyz]

Originally Posted by Masterbeatty

Yesterday there was a HR 350Z with PPE headers and a tomei Y-pipe back, he was so loud he was told put in the silencer or leave. The silencer still was not enough. His first run when I was corner working it hurt my ears to the point where I was slightly angry because this was a new parking lot and I knew if someone was going to ruin it for everyone it was going to be him.

That car is driven by a current National Champion, etc...and probably not as loud as my car, which is under National SCCA levels. If the event was at Devens, I could understand since they have a super low on site db rating. If not Devens, put in ear plugs and suck it, buttercup.

[FPenvy]

Originally Posted by 03threefiftyz

That car is driven by a current National Champion, etc...and probably not as loud as my car, which is under National SCCA levels. If the event was at Devens, I could understand since they have a super low on site db rating. If not Devens, put in ear plugs and suck it, buttercup.

so youre saying I may have a chance of being legal sound wise? lol

[j-rho]

The sound limits vary from site to site. The SCCA has a cap of 100db (@ 50') enforced at all events. My home site in San Diego is 92db @ 50'.

My 370 with a CAI, Berk HFC, resonated mid pipe, and stock muffler, blew almost 95db @50'. With no muffler I'm sure it'd be over 100.

It is getting harder and harder for autocross clubs to find and keep good sites for events. Maintaining a positive relationship with the surrounding residents is a big part of the necessary politics in keeping sites available.

[03threefiftyz]

Originally Posted by FPenvy

so youre saying I may have a chance of being legal sound wise? lol

Do you have a muffler?

[FPenvy]

Originally Posted by 03threefiftyz

Do you have a muffler?

yes. but they aren't currently on the car lol my FI muffler section is in the garage. I have my custom made straight sections on.

[Rusty]

Hey FPenis. Most tracks that do trackdays have a limit too. 95 to 100dB's. If you want to have fun. You may have to put a butt plug in your exhaust. Sorry.

[Masterbeatty]

Originally Posted by Rusty

Hey FPenis. Most tracks that do trackdays have a limit too. 95 to 100dB's. If you want to have fun. You may have to put a butt plug in your exhaust. Sorry.

[FPenvy]

Originally Posted by Rusty

Hey FPenis. Most tracks that do trackdays have a limit too. 95 to 100dB's. If you want to have fun. You may have to put a butt plug in your exhaust. Sorry.

Never had a db meter to test my car so who knows what it's at sound wise.

[6MT-Z34]

Hey guys/gals

There's going to be an autox event this sunday by where I live. I was thinking of going to check it out and be an spectator but was wondering what do I need if i do decide to try and run? This will be my first ever autox event that i have ever attended and first race/run i will do.

I know the stock Z should be good, but my one concern is my tires, i have some patch work on one of my front tires due to nails and stuff. If I do decide to run this weekend, do you guys think its safe to do so with patches on the tires or should I wait and get a set that doesn't have any "repair"? And what are other things i should consider before my first run?

Thanks!

[FPenvy]

Originally Posted by 6MT-Z34

Hey guys/gals

There's going to be an autox event this sunday by where I live. I was thinking of going to check it out and be an spectator but was wondering what do I need if i do decide to try and run? This will be my first ever autox event that i have ever attended and first race/run i will do.

I know the stock Z should be good, but my one concern is my tires, i have some patch work on one of my front tires due to nails and stuff. If I do decide to run this weekend, do you guys think its safe to do so with patches on the tires or should I wait and get a set that doesn't have any "repair"? And what are other things i should consider before my first run?

Thanks!

just make sure your car isn't loud. I found out the old men who hang out at these events have sensitive hearing.