Official 135i/128i SCCA FS/STU/STX Chat thread

Ginger_Extract · 06-24-2016, 01:07 PM

You're driving a 128i in STX, a class where 255 is the tire limit. You're not in STU, where other cars can run a 285. For perspective, would you be as fast if you could only run a 225 on your car?

Lifting a tire is a function of a big front bar, you know that.

RyanDavies · 06-24-2016, 01:21 PM

You said "not enough tire" and talked about your preference of the Civic. You can balance the car very easily with 255s.

Lifting a tire is a function of available droop travel in the shock, not bar roll stiffness. Kyle and I run very small front bars compared to most autocross cars, contributing rather small amounts to the roll stiffness compared to the spring.

RyanDavies · 06-24-2016, 01:29 PM

Fwiw, I am confident a 135 in STU would be an absolute max of .5 seconds back from the top dogs in class. It'll out accelerate the other 2wd cars, out sweep AWD, and is probably the best car transitionally other than a Mazdaspeed Miata.

Could definitely get one on the podium at Nationals with a good drive.

Taskmaster · 06-29-2016, 10:28 PM

So I see there is a rule that allows updating/backdating - why can't I run the 3SM again?

RyanDavies · 06-29-2016, 10:59 PM

Not in ST, no UD/BD.

I don't understand your question though. What is 3SM? The N51 manifold? If so, correct, whole engine has to be as delivered w/factory tolerances, aside from those specifically set aside in the ruleset. It would be legal in Street Prepared.

Kgolf31 · 06-30-2016, 06:38 AM

Quote:

Originally Posted by RyanDavies

Not in ST, no UD/BD.

I don't understand your question though. What is 3SM? The N51 manifold? If so, correct, whole engine has to be as delivered w/factory tolerances, aside from those specifically set aside in the ruleset. It would be legal in Street Prepared.

That, and simply a 3-Stage Intake Manifold cannot be swapped out due to the rule in ST that states you cannot change manifolds.

Taskmaster · 06-30-2016, 02:44 PM

Quote:

Originally Posted by Kgolf31

That, and simply a 3-Stage Intake Manifold cannot be swapped out due to the rule in ST that states you cannot change manifolds.

That's silly.

One rule says you can (N52K from the 330i)
One rule says you can't. So what does the back date rule apply to? Any way to get clarification?

RyanDavies · 06-30-2016, 03:42 PM

Can you quote the rules you're specifying?

Why is it silly? Look at what other cars gain (and how expensive they become to prep) when UD/BD is allowed. Cars like a CSP Miata effectively require buying two cars. There are already *way* too many allowances in ST that result in very expensive builds. Kyle and I are both not pursuing probably ~30% or more of available allowances.

Taskmaster · 07-04-2016, 10:35 AM

Quote:

Originally Posted by RyanDavies

Can you quote the rules you're specifying?

Why is it silly? Look at what other cars gain (and how expensive they become to prep) when UD/BD is allowed. Cars like a CSP Miata effectively require buying two cars. There are already *way* too many allowances in ST that result in very expensive builds. Kyle and I are both not pursuing probably ~30% or more of available allowances.

YEah, I'll post it in a second and you tell me if it's wrong, but it sounds like it is...

Nevermind, when I looked closer, it was SP...dang.
http://cdn.growassets.net/user_files...pdf?1454446940

Taskmaster · 07-19-2016, 08:22 PM

ECS and Eibach swaybar the same, or any other suggestions?

M3 Control Arms/Subframe bushings?

RyanDavies · 07-19-2016, 11:30 PM

They're the same. I've got a front for sale, if that's what you're looking for.

It depends upon the rest of your setup, whether or not it is the "right" answer.

I would go with offset camber bushings rather than the M3 arms. Cheaper, and adjustable.

Kgolf31 · 07-20-2016, 04:27 AM

Quote:

Originally Posted by RyanDavies

They're the same. I've got a front for sale, if that's what you're looking for.

It depends upon the rest of your setup, whether or not it is the "right" answer.

I would go with offset camber bushings rather than the M3 arms. Cheaper, and adjustable.

And the fact that if you go M3 arms you cannot use camber plates

RyanDavies · 07-20-2016, 05:55 AM

That too. Forgot this was the STX thread for a second.

Taskmaster · 07-21-2016, 08:50 PM

Quote:

Originally Posted by RyanDavies

They're the same. I've got a front for sale, if that's what you're looking for.

It depends upon the rest of your setup, whether or not it is the "right" answer.

I would go with offset camber bushings rather than the M3 arms. Cheaper, and adjustable.

Looks like it's sold...

Quote:

Originally Posted by Kgolf31

And the fact that if you go M3 arms you cannot use camber plates

Yeah, I haven't done the M3 arms yet, but I will be doing plates for sure.

Quote:

Originally Posted by RyanDavies

That too. Forgot this was the STX thread for a second.

I'm not going to be STX compliant, so I'm building for to be completely noncompetitive in SP.

RyanDavies · 07-21-2016, 10:29 PM

Eibach front is still available. The car could be competitive in BSP, IMO.

Taskmaster · 07-22-2016, 03:25 PM

Quote:

Originally Posted by RyanDavies

Eibach front is still available. The car could be competitive in BSP, IMO.

That takes talent and experience.

How new is the bar? Does it have the bushings? Cost shipped to 33573?

Kgolf31 · 07-25-2016, 06:56 AM

Kind of disappointing weekend for me really.

Finished 2nd out of 16 this weekend, but left time on both days. Don't know what to do.

Taskmaster · 07-25-2016, 11:57 AM

Quote:

Originally Posted by Kgolf31

Kind of disappointing weekend for me really.

Finished 2nd out of 16 this weekend, but left time on both days. Don't know what to do.

I'm not sure I understand why you're upset. You stated yourself that there is time left on thr table, you obviously have the talent - so dust off and on to the next round. A new tune will probably be on way soon too, help with some on/off throttle transitions and a bit more power. And what about more camber/less toe in the front?

Just seems to me your discouraged when you know there is more work to be done. Lewis Hamilton went from being almost 50pts down to first place in Formula 1, you're not even that far back and still have time to make up ground.

Kgolf31 · 07-25-2016, 03:22 PM

Quote:

Originally Posted by TheAxiom

I'm not sure I understand why you're upset. You stated yourself that there is time left on thr table, you obviously have the talent - so dust off and on to the next round. A new tune will probably be on way soon too, help with some on/off throttle transitions and a bit more power. And what about more camber/less toe in the front?

Just seems to me your discouraged when you know there is more work to be done. Lewis Hamilton went from being almost 50pts down to first place in Formula 1, you're not even that far back and still have time to make up ground.

I'm very competitive by nature.

I left time on the table, though I shouldn't have. Looking at the course it was my weekend to win, and do that easily. Clearly that didn't shape out that way.

New tune won't be coming until end of season most likely...the throttle application should improve.

Can't do more camber up front, nor do I think I need it. I don't want to go with toe out or excessive toe out

The Nebulizer · 07-29-2016, 05:05 PM

Quote:

Originally Posted by imported_mega

I dug into some old posts, looks like 225 is biggest that fits front without rub

No. You can fit 245 front at stock offset. (I was able to get 275 rear by increasing offset by 3mm - but as stated this is probably not necessary.) 245 square is probably a good Fstreet setup.

Kgolf31 · 08-01-2016, 08:03 AM

So this weekend was a bit better.

Squeezed out the win by 0.026 seconds. 11th out of 280 people in PAX overall.

Video:

Fume · 09-06-2016, 02:20 PM

Good luck to everyone who's at nationals! I'm guessing KGolf and RyanDavies are there? Looking forward to seeing some videos as well

06-24-2016, 01:07 PM	#309
Ginger_Extract California-bound 385 Rep 1,480 Posts Drives: BMW 135i Join Date: Jan 2013 Location: Los Angeles, CA iTrader: (3)	You're driving a 128i in STX, a class where 255 is the tire limit. You're not in STU, where other cars can run a 285. For perspective, would you be as fast if you could only run a 225 on your car? Lifting a tire is a function of a big front bar, you know that. __________________ Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 \|\|\|\| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17 Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 \|\|\|\| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing \|\|\|\| http://www.youtube.com/user/RaceMeMZ3
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06-24-2016, 01:21 PM	#310
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	You said "not enough tire" and talked about your preference of the Civic. You can balance the car very easily with 255s. Lifting a tire is a function of available droop travel in the shock, not bar roll stiffness. Kyle and I run very small front bars compared to most autocross cars, contributing rather small amounts to the roll stiffness compared to the spring.
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06-24-2016, 01:29 PM	#311
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	Fwiw, I am confident a 135 in STU would be an absolute max of .5 seconds back from the top dogs in class. It'll out accelerate the other 2wd cars, out sweep AWD, and is probably the best car transitionally other than a Mazdaspeed Miata. Could definitely get one on the podium at Nationals with a good drive.
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06-29-2016, 10:28 PM	#312
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	So I see there is a rule that allows updating/backdating - why can't I run the 3SM again?
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06-29-2016, 10:59 PM	#313
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	Not in ST, no UD/BD. I don't understand your question though. What is 3SM? The N51 manifold? If so, correct, whole engine has to be as delivered w/factory tolerances, aside from those specifically set aside in the ruleset. It would be legal in Street Prepared.
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06-30-2016, 03:42 PM	#316
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	Can you quote the rules you're specifying? Why is it silly? Look at what other cars gain (and how expensive they become to prep) when UD/BD is allowed. Cars like a CSP Miata effectively require buying two cars. There are already way too many allowances in ST that result in very expensive builds. Kyle and I are both not pursuing probably ~30% or more of available allowances.
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07-19-2016, 08:22 PM	#318
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	ECS and Eibach swaybar the same, or any other suggestions? M3 Control Arms/Subframe bushings?
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07-19-2016, 11:30 PM	#319
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	They're the same. I've got a front for sale, if that's what you're looking for. It depends upon the rest of your setup, whether or not it is the "right" answer. I would go with offset camber bushings rather than the M3 arms. Cheaper, and adjustable.
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07-20-2016, 05:55 AM	#321
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	That too. Forgot this was the STX thread for a second.
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07-21-2016, 10:29 PM	#323
RyanDavies Lieutenant 63 Rep 448 Posts Drives: 2012 128i MSport Join Date: Sep 2015 Location: Washington, DC iTrader: (2)	Eibach front is still available. The car could be competitive in BSP, IMO.
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07-25-2016, 06:56 AM	#325
Kgolf31 Brigadier General 460 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Kind of disappointing weekend for me really. Finished 2nd out of 16 this weekend, but left time on both days. Don't know what to do.
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08-01-2016, 08:03 AM	#329
Kgolf31 Brigadier General 460 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	So this weekend was a bit better. Squeezed out the win by 0.026 seconds. 11th out of 280 people in PAX overall. Video:
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09-06-2016, 02:20 PM	#330
Fume First Lieutenant 52 Rep 374 Posts Drives: '19 Porsche 718 Cayman GTS Join Date: Jul 2013 Location: Seattle iTrader: (1)	Good luck to everyone who's at nationals! I'm guessing KGolf and RyanDavies are there? Looking forward to seeing some videos as well __________________ New Car: 2019 Porsche 718 Cayman GTS \| Stock for now Old Car: 2013 BMW 128i \| 6MT \| BMW Performance Grills \| CDV Delete \| SSK \| Performance Exhaust \| M3 RSFB \| TCKR DA
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