The 'Dumb Question' Thread

[JEWC_Motorsports]

You can stage the car shallow to keep it from rolling through the beams.

 

[AJCrader]

ok just thought of my question

if you are on a track that is oriented slightly downhill, and you have a manual, how do you stop your car from rolling though the staging beams while the clutch is down with one foot and the revs are being held up with the other?

had this problem at one track I would go to sometimes. funny enough when the track took new ownership and they got serious about track prep the problem suddenly stopped.

the only thing I could think to do was either wait till the last possible second to take my foot off the brake and bring the revs up or just not go there.

I tried holding the e brake and then dropping it before the green, but apparently I don't have the coordination to really pull it off and get a good R/T

First thing I would say is that if it is a sanctioned track it won't be on a slight grade...the second thing is that with any sort of track prep worth racing on, it should be sticky enough to hold your car in place as long as there isn't any drag when the clutch is pushed in

other than that a line lock would be your best bet

 

[NUTCASE]

I am talking about capitol raceway in MD up until early this year when they switched management.

before they switched management I could not race there because of the rolling issue.

also that track is known for being on a slight downgrade.

I tried toggling my line locks at the line but I just was not successful with it. call me discombobulated or whatever but I just decided to go elsewhere where I would not have the issue.

as far as the track prep (remeber this is before the new management) I would spin off the line with 275 DRs on a bolt on stang off the bottle. then take the same combo to MIR or 75/80 and I could dead hook the setup launching at 5k with a 125 shot.

 

[LAStang1234]

bump

 

[weather man]

Well, my turn Who knew wheels could be so damn hard to pick! Anyway, looking at race stars. Thinking 17x9.5 and 17x7. Tranny would be a 4R70 with the wide ratio gear set. I believe these are the ratio's 1st 2.84 -1, Second " 1.55 -1, Third " 1.1, Overdrive - Fourth " .7 -1

Looking at tires, it looks like M&H has a nice set that would work. Fronts: 26/8.50R17 Front

They have 2 rears: 275/40R17 (26" Tall) 275/50R17 (28" Tall)

QUESTION: I have 3.55 gears, 600 to 650 HP, which rear would work better?

Thanks guys

 

[JEWC_Motorsports]

Bias ply in whatever size you choose. Racestar.......yuck and get a 28" tall tire on the front. 26" is too short with your turbo kit.

 

[skwerl]

Well, my turn Who knew wheels could be so damn hard to pick! Anyway, looking at race stars. Thinking 17x9.5 and 17x7. Tranny would be a 4R70 with the wide ratio gear set. I believe these are the ratio's 1st 2.84 -1, Second " 1.55 -1, Third " 1.1, Overdrive - Fourth " .7 -1

Looking at tires, it looks like M&H has a nice set that would work. Fronts: 26/8.50R17 Front

They have 2 rears: 275/40R17 (26" Tall) 275/50R17 (28" Tall)

QUESTION: I have 3.55 gears, 600 to 650 HP, which rear would work better?

Thanks guys

26" tall rears, definitely.

 

[weather man]

Bias ply in whatever size you choose. Racestar.......yuck and get a 28" tall tire on the front. 26" is too short with your turbo kit.

Both are radials on the website?

 

[JEWC_Motorsports]

Radials shock the suspension more. More of a chance of breaking something.

 

[Mike K]

James he is old and won't beat on it so I wouldn't worry about that. Lol. Sorry Brian.

 

[weather man]

26" tall rears, definitely.

James he is old and won't beat on it so I wouldn't worry about that. Lol. Sorry Brian.

LOL...when you punch the numbers, at 6500rpm the 26" is 129mph in 3rd and the 28" is 139mph

 

[skwerl]

LOL...when you punch the numbers, at 6500rpm the 26" is 129mph in 3rd and the 28" is 139mph

I was looking at the 1st gear ratio. How much time do you spend at 129mph? Wouldn't you want to be in 4th gear crossing the line at the track?

 

[weather man]

I was looking at the 1st gear ratio. How much time do you spend at 129mph? Wouldn't you want to be in 4th gear crossing the line at the track?

With the 4R70, I know 4th can be tricky, so I am not sure. I am gonna talk to the guy building the trans in depth on that.

 

[Mike K]

Go with the 28" so you won't risk blowing 4th gear.

 

[ILW84U]

You do not want to be in 4th with the 4R70W at the track. You should be looking at 15's for the rear. I ran the Racestar 15's on my 05.

 

[mustangtcs]

With the 4R70w third gear is the 1.00:1 ratio. That is the gear you want to cross the line in.

 

[skwerl]

The numbers aren't jiving here. With a 3.55:1 rear and the transmission in 1:1 ratio, a 26" tire will give you a hell of a lot more than 129mph. What is your redline set at?

I have 3.73 gears, 6800 redline, 26" tires and hit 136mph in 4th gear (1:1 ratio).

 

[weather man]

The numbers aren't jiving here. With a 3.55:1 rear and the transmission in 1:1 ratio, a 26" tire will give you a hell of a lot more than 129mph. What is your redline set at?

I have 3.73 gears, 6800 redline, 26" tires and hit 136mph in 4th gear (1:1 ratio).

I just picked 6,500 when I was popping the numbers. With my upgraded springs and limiters, I think 7,200 would probably be safe.

28" 109mph 2nd 154 3rd

26" 101mph 2nd 143 3rd

So, the 1/8 mile strip becomes interesting, do I shift to 3rd or leave it in 2nd?

Can't wait til it opens and I can have some fun! I'm gonna suck bad, but still be fun!

 

[skwerl]

Like I said, go with the 26" unless you plan on switching to 4.10 gears.

 

[weather man]

Like I said, go with the 26" unless you plan on switching to 4.10 gears.

Since turbos like load, I wonder?