ITB Review - Help Identify Potential Issues

[Chip42]

I think it's important to specify the trim levels of those cars, as both had lesser or different engined siblings. suzuki Swift Tsi/storm and prism GSi.

I'm suprised that the storm GSi and the Stylus XS use different factory HP numbers - they are 2 and 4 door versions of the same car, and both use the same engine (4XE1-W) which was rated at 130 hp @ 7000 RPM / 102 lb·ft @ 5800 RPM. the Stylus has 4 wheel discs and nifty Lotus stickers.

all of those listed above (excep the fire arrow and alfas) are DOHC / 4 valve per cylinder cars. we have to nip this 130% thing, because the numbers dave shows are big enough. I'd agree that both Geo GSi cars and the Isuzu are better suited for ITA, particularly at ~2300-2400# factory curb weights.

There was a thread about a year ago that hit on these same cars for this same reason, but my search-fu is weak.

[Robbie]

I think it's important to specify the trim levels of those cars, as both had lesser or different engined siblings. suzuki Swift Tsi/storm and prism GSi.

I'm suprised that the storm GSi and the Stylus XS use different factory HP numbers - they are 2 and 4 door versions of the same car, and both use the same engine (4XE1-W) which was rated at 130 hp @ 7000 RPM / 102 lb·ft @ 5800 RPM. the Stylus has 4 wheel discs and nifty Lotus stickers.

all of those listed above (excep the fire arrow and alfas) are DOHC / 4 valve per cylinder cars. we have to nip this 130% thing, because the numbers dave shows are big enough. I'd agree that both Geo GSi cars and the Isuzu are better suited for ITA, particularly at ~2300-2400# factory curb weights.

There was a thread about a year ago that hit on these same cars for this same reason, but my search-fu is weak.

Where are the Isuzu Stylus XS and the Storm GSi rated differently? I'll take a picture of my Isuzu FSM at home to show that the Stylus and Impulse XS are rated at 130 hp and 102 lb/ft.

I agree that both along with the Swift should be in ITA.

[Chip42]

Where are the Isuzu Stylus XS and the Storm GSi rated differently? I'll take a picture of my Isuzu FSM at home to show that the Stylus and Impulse XS are rated at 130 hp and 102 lb/ft.

first post. listed weights are 50# different from each other as well.

I agree that both along with the Swift should be in ITA.

I disagree Re: the swift. It's a proper ITB car.

[Robbie]

first post. listed weights are 50# different from each other as well.


I disagree Re: the swift. It's a proper ITB car.

I see that now. That was the rating for the 1.6L 1989 Isuzu I-Mark RS (which is actually a motor with higher potential than the Storm or Impulse/Stylus, it has much bigger cams), the Stylus/Impulse XS and Storm were all rated at 130/102 from the factory. I'll confirm that tonight.

[jjjanos]

Plymouth Fire Hawk: (138 x 1.25 x 17) = 2935 GCR = 2360
Geo Strom GSi: (130 x 1.3 x 17 x 0.98) = 2815 GCR = 2380
Alfa Spyder: (132 x 1.25 x 17) = 2805 GCR = 2805 (HP Sourced via google)
Isuzu Stylus: (130 x 1.3 x 17 x 0.98) = 2815 GCR = 2430
Geo Prism GSi: (130 x 1.3 x 17 x 0.98) = 2815 GCR = 2455
Fiat 124 1800: (118 x 1.25 x 17) = 2510 GCR = 2230
Suzuki Swift GT (100 x 1.3 x 17 x0.98) = 2165 GCR = 1895
Alfa Romeo Alfetta, GT, GTV, Sprint (128 x 1.25 x 17) = 2720 GCR = 2520

Based on what I could google on HP #s, there are something like twenty to thirty candidates for moving down to ITC. Not surprisingly, most of these cars have probably never been raced as ITB cars.

[lateapex911]

Plymouth Fire Hawk: (138 x 1.25 x 17) = 2935 GCR = 2360
Geo Strom GSi: (130 x 1.3 x 17 x 0.98) = 2815 GCR = 2380
Alfa Spyder: (132 x 1.25 x 17) = 2805 GCR = 2805 (HP Sourced via google)
Isuzu Stylus: (130 x 1.3 x 17 x 0.98) = 2815 GCR = 2430
Geo Prism GSi: (130 x 1.3 x 17 x 0.98) = 2815 GCR = 2455
Fiat 124 1800: (118 x 1.25 x 17) = 2510 GCR = 2230
Suzuki Swift GT (100 x 1.3 x 17 x0.98) = 2165 GCR = 1895
Alfa Romeo Alfetta, GT, GTV, Sprint (128 x 1.25 x 17) = 2720 GCR = 2520

Based on what I could google on HP #s, there are something like twenty to thirty candidates for moving down to ITC. Not surprisingly, most of these cars have probably never been raced as ITB cars.

How is the Alfa a problem??? if the process and the GCR match? I suspect you typo-ed the GCR weight. (My GCR shows every single Alfa Spider at 2400) That car would need a TON of baggage to weigh that, I'd think.

[Knestis]

Why are we burning up bandwidth on this...?

Find the appropriate documentation.

Submit a request that [Model X] be run through the Process.

Trust the ITAC to follow their internal rules.

Done.

K

[JeffYoung]

I think Pants was just listing cars that might be an issue.

Some of those early ones could be Net numbers too.

How is the Alfa a problem??? if the process and the GCR match? I suspect you typo-ed the GCR weight. (My GCR shows every single Alfa Spider at 2400) That car would need a TON of baggage to weigh that, I'd think.

[jjjanos]

How is the Alfa a problem??? if the process and the GCR match? I suspect you typo-ed the GCR weight. (My GCR shows every single Alfa Spider at 2400) That car would need a TON of baggage to weigh that, I'd think.

Typo and an error on my part. HP number I had probably was gross, not net.

Car works out to: 17 x 1.25 x 115 = 2445 GCR = 2400 or just a little too low per the GCR.