I agree, should be a separate spec line.
Not a significant difference in weight (60 lbs), but enough. Plus the line is just wrong.
James, write the letter and we will try to correct.
I agree, should be a separate spec line.
Not a significant difference in weight (60 lbs), but enough. Plus the line is just wrong.
James, write the letter and we will try to correct.
NC Region
1980 ITS Triumph TR8
yea, we gotta fix that. THAT is an error! Whoo hoo!
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
A real one!
But wait, Josh is right...no errors and omissions clause in the GCR....lol.....
NC Region
1980 ITS Triumph TR8
now now.
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
Grafton,
You went for the iron block hp rating not the aluminum block introduced in 1997 not 1995.
http://en.wikipedia.org/wiki/BMW_M52 and http://en.wikipedia.org/wiki/BMW_Z3
Josh and I have discussed this in the past. I guess what changed is the relization that the car is classed based on the motor not the VIN, and if the motor "is" different enought that you can tell by an open hood then the weight should be too. (I always thought the 50lb on the e-36 and 100lbs on the e-46 328 was because of the trailing arm/multi-link rear suspensions.) So then the max my car should weight is at least the 2765 (that's still 35lbs less lead than I'd have to put in it) that the 325 weights.
STU BMW Z3 2.5liter
James is right. I should have mentioned that the '97-'98 Z3 wasn't exactly the same as the E36 328i ... the Z3 has an aluminum block version of the same motor (same internals, same head, same intake, etc.) but was rated 1hp less than the iron block version.
Josh Sirota
ITR '99 BMW Z3 Coupe
Thanks guys, I just submitted it and was given CRB #238 FYI.
STU BMW Z3 2.5liter
Good luck with that James.
I'd love to get some more ITR cars out there. I need someone to race against. Even if it's Mustangs and Camaros
John Norris
#07 ITS/R BMW 325is
#07 ITS BMW 325
Sponsors:
GREEN FLASH BEER
GT International BMW Service since 1976
I'll be out reguardless of how this goes. I know you need some competition
STU BMW Z3 2.5liter
My bad, that motor is rated at 189.
Per the process the early Z3 should match the 325 weight as you say, while the later should be around 2820 lbs. Could run either motor with the VIN rule, or the 3.0 for that matter, though I doubt many would want to run that heavy.
Grafton
Here's another question since some of our ITAC are on this thread. About a month ago I sent in a request to the CRB for proper weight specs for my 968 running in STU - never heard a word. What's the best way to get feedback on that question?
BenSpeed
#33 ITR Porsche 968
BigSpeed Racing
2013 ITR Pro IT Champion
2014 NE Division ITR Champion
I like Greg's answer better :-)
I found the weight to displacement grid in the GCR - 3300 lbs it is. Better to race STU in IT trim.
Seriously thinking about crashing the Runoffs in my Hillbilly RV.
Last edited by benspeed; 11-25-2009 at 10:14 AM.
BenSpeed
#33 ITR Porsche 968
BigSpeed Racing
2013 ITR Pro IT Champion
2014 NE Division ITR Champion
That's a 10-4 man - come chill in the RV and we can plot the Caddyshack invasion.
BenSpeed
#33 ITR Porsche 968
BigSpeed Racing
2013 ITR Pro IT Champion
2014 NE Division ITR Champion
Anybody know where we can get a group buy on boonie hats and Baby Ruths?
Bill Stevens - Mbr # 103106
BnS Racing www.bnsracing.net
92 ITA Saturn
83 ITB Shelby Dodge Charger
Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
Simpson Performance Products - simpsonraceproducts.com
For those of you who don't frequent that other popluar watering hole, just wanted to mention that it has been confirmed that there will be a requirement for a H&N restraint for SCCA Club Racing beginning in 2012, and that all devices will be required to carry either a SFI or FIA certification.
Earl R.
240SX
ITA/ST5
Quote:
Originally Posted by Andy Bettencourt
Tristan,
Your weight is based on 235ish whp in IT trim for a full build. If you think it can make that number, it's weighted correctly for ITR.
S2000 needs to make 225ish, RX-8 = 215ish, 968 = 223ish.
Andy, what is that based on? Just stock horsepower with the usual 15 percent improvement?
Hey Andy, I know i am digging up an old thread but..
after doing some leg work, and speaking with Jeff about that 235 WHP that was used to class that car, I need to ask for a clarification. Was only one dyno test used?
My discussion with Z1 motorsports, one of the leading Z shops in the country, puts that power of a basic IT build in the 200 hp range at the wheels.
Here is also a link to the 300zxclub website where people put up their dyno numbers with, again basic IT mods. It again supports the 195 - 205 hp at the wheels, numbers.
http://www.300zxclub.com/showthread.php?t=78732
So how would I go about trying disprove the one dyno sheet (that I know of) that was used to classify the car weight?
Last edited by Tristan Smith; 01-28-2010 at 11:55 AM.
Tristan Smith
1991 Nissan ITR 300zx #56
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