Josh Sirota
ITR '99 BMW Z3 Coupe
is the comment regarding the "restrictions" have to be remain in place the question or the response?
ITC1. #2616 (Brody Saari) Request rules explanation/reasoning
All air restrictions from the original fuel injection system must remain in place, although air metering devices may be added to support aftermarket ECUs.
if it is the response, just what does that mean? i consider the OEM air filter and inlet hose to be restrictions and they can be replaced.
1985 CRX Si competed in Solo II: AS, CS, DS, GS
1986 CRX Si competed in: SCCA Solo II CSP, SCCA ITA, SCCA ITB, NASA H5
1988 CRX Si competed in ITA & STL
Nothing has changed, don't worry. The letter was specifically asking why the original air metering device had to stay in place if one was added.
Josh Sirota
ITR '99 BMW Z3 Coupe
I am very glad to see my fellow pgh'er Brett Mars got the Focus ST classed in ITA. In my opinion this car could dominate the class. This car should be capable of putting down between 160 and 165 at the wheels and at a weight of 2680. I like the package
1987 ITS RX-7
2014 Ford Focus ST
Currently borrowing tow vehicles!!
Central Carolina Region
STEELERS SIX PACK!!
Last edited by dhardison; 10-22-2010 at 09:13 AM. Reason: 'Cause I can't type for sheet
Dan
2010, 2011, 2012 & 2013 Great Lakes Division ITB Champion
Requests for "clarification" or "explanation" should *not* be handled through Fastrack. That's like asking a senator for an opinion about whether a particular law passes legislative muster. More words are almost never the right answer...
That official Fastrack item just opened up the rule - "A MAP or MAF sensor and its wiring may be added" - by saying that "air metering devices may be added." More than one and any type. While at the same time stipulating, as Tom points out, that we now have to worry about something called "air restrictions." Neither of those terms is in the GCR Glossary, btw.
Why can't we just leave well enough alone and let the systems work the way they are supposed to?
K
I agree with kirk.. leave well enough alone.. should of done that awhile ago. *cough* open computers and spherical suspension joints *cough*. IF we kept fatory computers there would be no need for aditional sensors. yes the newre cars have better designs, but thusly they are expected to be able to adapt to changes better and should be calculated in their expected gains.
Josh am I correct about these air restrictions rule. Does force the addition of new AFM's to to run in series to the orignal pieces? Meaning does all air have to go through both the factory and additional meters one after the other?
Track Speed Motorsports
http://www.trackspeedmotorsports.com/
Steven Ulbrik (engineer/crew/driver)
[email protected]
Track Speed Motorsports
http://www.trackspeedmotorsports.com/
Steven Ulbrik (engineer/crew/driver)
[email protected]
Well, if Kirk was still on the board......
Annnnnyway, LOL.
Josh, can you explain the current practices of weighting cars? How did all the Honda adjustments come to be? What's the internal policy about actually changing existing weights?
Jake Gulick
CarriageHouse Motorsports
for sale: 2003 Audi A4 Quattro, clean, serviced, dark green, auto, sunroof, tan leather with 75K miles.
IT-7 #57 RX-7 race car
Porsche 1973 911E street/fun car
BMW 2003 M3 cab, sun car.
GMC Sierra Tow Vehicle
New England Region
lateapex911(at)gmail(dot)com
The Honda adjustments came about because of two letters asking us to clarify the Del Sols, and their inconsistency vis-a-vis their mechanical siblings, the Civics. In addition, splitting up the Sis across the two different engines is analogous to what we did with the ITR Z3s. Wholly different engines, slightly different stock HP, identical chassis.
Perhaps we didn't need to answer the ITC question in Fastrack -- the author had already gotten his answer privately. But I disagree with Kirk that the answer changes anything, as nothing changes with respect to the actual rules, and certainly all the context isn't present in Fastrack (such as the actual question.) I agree with Travis that the answer there is a side effect of the desire to be more verbose and explanatory with every letter that comes in.
Josh Sirota
ITR '99 BMW Z3 Coupe
Josh, keep the clarifications coming... great work. I am being a little selfish as well, since my 92 Civic Si just dropped another 35 lbs. With that, the 92-95 Civic EX will need to drop weight as well... i.e. since the EX has the same suspension, engine, etc (except that it's a coupe/sedan).
Demetrius Mossaidis aka 'Mickey' #12 ITA NESCCA
'92 Honda Civic Si
STFU and "Then write a letter. www.crbscca.com"
2013 ITA NARRC Champion and I have not raced since.
What is the stock HP on this car?
(Edit - did the research: 151hp. Interesting that the ST in 2006 is the only version of the Focus that has the 2.3L according to Edmunds.)
It would need to make 160whp to be 'at process'. HP in ITA is really creeping up. Mazda 3, this car...you got a big home track? These could be the ticket.
Last edited by Andy Bettencourt; 10-22-2010 at 03:03 PM.
Yeah I owned a 2006 Focus ST as my daily driver a couple years ago (had an '04 SVT Focus immediately before it).
The ST was a great car; you could keep the SVT. I would not concern myself with HP; it has torque and good gearing.
At the weight, it should be a great ITA car.
OK, IF that's true, and IF we accept the "top dog" (bla bla bla, in everyone's minds, never really 'proven', bla bla bla) Miata puts 138 down at the wheels , we get 16.54 lbs/hp for the Focus, (using 162) and 17.25 for the Miata.
So, indeed, the Focus looks like it has potential...
But....
That said, 150 stock hp to 162 at the wheels is a just bit more than the standard 25%, (my math shows 160.4 at the wheels expected.)
Initial math 151 x .25=37.35, = 188.75 crank, x 14.5= puts it at 2736lbs, minus 2% FWD, (54.73) = 2680.
No additional adders appear to come into play, right?
IF you get 165 out of it, that's 14.5 x 4.5 =65.25 -1.3 (FWD) = 64. So, you'd have an advantage of 64lbs. ...
To me, it looks like a good listing, one that could threaten/win at certain tracks, but not necessarily all tracks....
Jake Gulick
CarriageHouse Motorsports
for sale: 2003 Audi A4 Quattro, clean, serviced, dark green, auto, sunroof, tan leather with 75K miles.
IT-7 #57 RX-7 race car
Porsche 1973 911E street/fun car
BMW 2003 M3 cab, sun car.
GMC Sierra Tow Vehicle
New England Region
lateapex911(at)gmail(dot)com
Remember Jake, the power to weights are going to be off a bit because the FWD subtractor is taken off AFTER the P/W calc is done.
yea, that's why I said, "but".....then did the math with the FWD adder, and concluded it looked like a "Good" listing. Pretty much right on.
Jake Gulick
CarriageHouse Motorsports
for sale: 2003 Audi A4 Quattro, clean, serviced, dark green, auto, sunroof, tan leather with 75K miles.
IT-7 #57 RX-7 race car
Porsche 1973 911E street/fun car
BMW 2003 M3 cab, sun car.
GMC Sierra Tow Vehicle
New England Region
lateapex911(at)gmail(dot)com
Did I read it correctly that the ST class will be a regional class only as of next year? I guess IT drivers wanting to run a national race and the runoffs is a dead issue.
Steve Elicati
ITA 1994 Mazda Miata
Central Florida Region
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