Gen4/5 1/4 Mile Record

[Jordan_R]

What time or speed will require a cage and safety equipment? I thought it was 9.9 or 10.9
Once you break 10, and you will. I wonder if they will knock you for a cage
And if they do ban you till you get safety equipment just tell them, why? Its just a Taurus

Technically speaking 11.49 or faster already requires a partial cage. Never had anything think twice about reinspection.

You could have replaced the driver's seat with a milk crate. And who needs brakes? Haha

People joking about weight reduction "advice sarcasm" is a horse that's so beaten to death that it's past ground meat to me at this point so just assume I'm rolling my eyes lol

 

[stripSHO]

Technically speaking 11.49 or faster already requires a partial cage. Never had anything think twice about reinspection.



People joking about weight reduction "advice sarcasm" is a horse that's so beaten to death that it's past ground meat to me at this point so just assume I'm rolling my eyes lol

IHRA always required a 6pt bar at 11.49 and full cage at 9.99 back in the day but I think NHRA makes 10.99 and 8.99 the cutoffs. It's been a really long time since I was certified for tech inspection so don't know how accurate that is today.

 

[Jordan_R]

IHRA always required a 6pt bar at 11.49 and full cage at 9.99 back in the day but I think NHRA makes 10.99 and 8.99 the cutoffs. It's been a really long time since I was certified for tech inspection so don't know how accurate that is today.

Nhra also requires six point at 11.49

 

[mybigsho]

I think 2008 and newer can use oe safty equipment from the factory..Anything faster than 9.99 or 135 mph
needs a cage.. Thats for hard top cars..

 

[yaycandy]

I think 2008 and newer can use oe safty equipment from the factory..Anything faster than 9.99 or 135 mph
needs a cage.. Thats for hard top cars..

Yea my bud and I are still working on the ls3/525 miata and i think if it even runs at a track it will get banned. Ive heard around 12 seconds or so for a convertible car and it will need a cage. Which i agree with haha

 

[SM105K]

Yea my bud and I are still working on the ls3/525 miata and i think if it even runs at a track it will get banned. Ive heard around 12 seconds or so for a convertible car and it will need a cage. Which i agree with haha

Depending on the track, you may need arm restraints as well.

 

[yaycandy]

Depending on the track, you may need arm restraints as well.

My stock 90 with probably 85 rwhp is zippy enough that id rather a high hp miata have a full cage that is also tree proof

 

[6500rpm]

Jordan, have you ever talked to your tuner about what an optimal final gear ratio would be? I just wonder if there's anything left on the table in that respect. 2 gear sets to choose from and the tire diameter of your choice for 1/4 mi.

 

[Jordan_R]

Jordan, have you ever talked to your tuner about what an optimal final gear ratio would be? I just wonder if there's anything left on the table in that respect. 2 gear sets to choose from and the tire diameter of your choice for 1/4 mi.

Don't need to talk to tuner for it. Mathed out between the two gear ratios the Non-PP is super ideal due to me being at the top of fourth once I am trapping in the quarter. Basically gives me the entire powerband through each of the gears while not unnecessarily upshifting just before the quarter. Trapping 127MPH with 275/40r20's I am just a couple MPH before the shift into fifth. If I had a little bit more trap speed I could also slightly have the shift limit raised slightly because pretty sure it goes into fifth at like 6000 RPM anyways, but haven't paid attention to that extent. If I were a PP vehicle I would be into fifth decently which is another 2 tenths in the shift and then a luggier powerband. IMO Ryan Spencer, the previous record holder, has it a little bit harder than I do being a PP car. He always finishes in fifth through the quarter which definitely isn't helping him.

 

[stripSHO]

That seems like a good hunch, but sorry I don't see the 3.16's torque gains throughout the run being negated by the hundredths of a second a top end shift costs. Besides, torque generally peaks between 3500-4500, and every upshift puts the engine right smack in the middle of that ideal range. The majority of dyno charts I've seen for these cars show no benefit in going past ~5800 rpm. YMMV of course, and that's why you need to take your dyno measured torque curve into consideration and not just aim for peak rpm through the traps.

BTW there's actually 3 choices for gearing. The interceptor comes with a 3.39:1 final drive.

 

[Jordan_R]

That seems like a good hunch, but sorry I don't see the 3.16's torque gains throughout the run being negated by the hundredths of a second a top end shift costs. Besides, torque generally peaks between 3500-4500, and every upshift puts the engine right smack in the middle of that ideal range. The majority of dyno charts I've seen for these cars show no benefit in going past ~5800 rpm. YMMV of course, and that's why you need to take your dyno measured torque curve into consideration and not just aim for peak rpm through the traps.

BTW there's actually 3 choices for gearing. The interceptor comes with a 3.39:1 final drive.

You're using a blanket statement comparing me to the average SHO. I am spraying a 50 shot that carries out the powerband and helps with low end. And there is only two ratios in the ecoboost variant even with the police interceptor. Maybe you are taking into consideration the N/A variant on the interceptor. Not to mention when you are talking about 2 tenths on a shift deep into the 11s that's a HUGE margin to just overlook. going from a 12.2 to a 12.0 is easier in comparison to going from a 11.2 to a 11.0. You also have to consider beginning grip. The PP gear ratio would be more likely to loose traction through the first couple gears compared to the NonPP ratio.

Basically there is more to it than just theories. There is a reason many drag oriented cars run a 3.73 over a 4.10 for these very reasons. Traction, Trap and powerband efficiency. Just because our cars don't make consistent power up top doesn't mean we aren't accelerating at a rate that is more efficient than shifting one more time.

 

[Jordan_R]

I'd say to an extent in the slower speeds a PP's gearings would be more optimal to an extent, but currently where I am at as far as optimization and what not the NonPP is currently the best gearing for the job. Until at least a 10.7 or 10.8 then maybe a tire size change is in order to offset the gearing slightly for more mph.

 

[yaycandy]

You're using a blanket statement comparing me to the average SHO. I am spraying a 50 shot that carries out the powerband and helps with low end. And there is only two ratios in the ecoboost variant even with the police interceptor. Maybe you are taking into consideration the N/A variant on the interceptor. Not to mention when you are talking about 2 tenths on a shift deep into the 11s that's a HUGE margin to just overlook. going from a 12.2 to a 12.0 is easier in comparison to going from a 11.2 to a 11.0. You also have to consider beginning grip. The PP gear ratio would be more likely to loose traction through the first couple gears compared to the NonPP ratio.

Basically there is more to it than just theories. There is a reason many drag oriented cars run a 3.73 over a 4.10 for these very reasons. Traction, Trap and powerband efficiency. Just because our cars don't make consistent power up top doesn't mean we aren't accelerating at a rate that is more efficient than shifting one more time.

I think the 3.7l cop car has a different gear as i was going to jack one off of one at harrys u pull it in hazelton PA last year but i read somewhere that it was different then both offered in sho

 

[SM105K]

There are so many factors. Our cars are not drag cars and we in uncharted waters. I agree with Jordan's assessment.

Stock for stock, I see the PP having the advantage.

When the cars are tuned and modified, so many different factors rear their heads.

 

[FiveLeeter918]

There are so many factors. Our cars are not drag cars and we in uncharted waters. I agree with Jordan's assessment.

Stock for stock, I see the PP having the advantage.

When the cars are tuned and modified, so many different factors rear their heads.

We actually have a set of customers locally to each other both running our tunes, identical modifications but one a PP and one a non PP. They both run our 93 tune and ran damn near identical of each other the full pull.

 

[SM105K]

Thank you LEE! I have been waiting for something like this. Let me guess, the PP is on the right.

 

[FiveLeeter918]

Thank you LEE! I have been waiting for something like this. Let me guess, the PP is on the right.

Correct. I actually did just look back and the non-PP has the J2 intake and the PP car has the Airaid intake, but otheriwse identical.

Here's the video

 

[stripSHO]

You're using a blanket statement comparing me to the average SHO. I am spraying a 50 shot that carries out the powerband and helps with low end. And there is only two ratios in the ecoboost variant even with the police interceptor. Maybe you are taking into consideration the N/A variant on the interceptor. Not to mention when you are talking about 2 tenths on a shift deep into the 11s that's a HUGE margin to just overlook. going from a 12.2 to a 12.0 is easier in comparison to going from a 11.2 to a 11.0. You also have to consider beginning grip. The PP gear ratio would be more likely to loose traction through the first couple gears compared to the NonPP ratio.

Basically there is more to it than just theories. There is a reason many drag oriented cars run a 3.73 over a 4.10 for these very reasons. Traction, Trap and powerband efficiency. Just because our cars don't make consistent power up top doesn't mean we aren't accelerating at a rate that is more efficient than shifting one more time.

My apologies, I thought "YMMV, use your torque curve" seemed pretty specific but oh well. I also don't think nitrous, being rpm-independent, would reshape the torque curve but what do I know

I'm also not sure how you're deriving a .2 second shift penalty but I think that's pretty heavily inflated, like 2x to 4x of reality.

And yes there's a reason real drag cars choose one gear over another, and it's through applying the same theory that I'm suggesting be applied here. That theory PROVES whether or not a shift is justified. I'm not pulling blind statements out of my ass - I have a spreadsheet sitting on my computer that I made myself that takes a cars torque curve, transmission gears, final drive and tire size then spits out a graph of linear force output in each gear.

Other things real drag cars do- they don't drive on radial tires. They solve their traction issues rather than complaining about them. They don't use stock stall speeds. And they also don't run down the track hauling two transmission gears that they'll never touch!

Also you're right about the 3.39, it's in the 6f50. My bad!

 

[Jordan_R]

You're right. I definitely don't know anything about how to be the fastest in the platform by almost 3 tenths with less mods lol. Let me know when you have slips proving your Theories!

 

[Jordan_R]

Also didn't know we had dsg trans that could shift in milliseconds lol definitely exaggerating that 200ms shift time that is quite easily measurable in a data log, but what do I know once again