BadAss SRT-Z - 2.4L / A568 - Update!!!

[BadAssPerformance]

I have a set of 600lb springs here that never made it onto the car

Thanks man, yer almost there!

[22shelby]

yeah car is making the power, but after seeing the pic then the vids....i guess were fight the same as the IRS cobras..... too much camber movement during launch your only using 1/2 ur tire... not to mention the energy loss with the weight transfer...

maybe a ratchet strap suspension mod????lol.....

[bakes]

The question is do we set the camber to 0* and toe to 0" at rest or when the front lifts?

[Aries_Turbo]

The question is do we set the camber to 0* and toe to 0" at rest or when the front lifts?

you have someone take a pic or vid of the car launching and the jack the car up to that approx height and set the toe and camber at the launch height.

Brian

[22shelby]

you mean something along these lines????

[BadAssPerformance]

^^^^ THIS ... needs to be fixed

[Shadow]

The second HP calculator puts me within 10hp of what I know the car actually puts down using the known actual weight of the car and me in it. I'd say that's pretty darn close, but I'm within that "average" area, so I don't really count! LOL

What do you mean, you don't count? The "average area" is generally the Most acurate, so you count The Most!

[contraption22]

Nice runs, JT. I would say try the 600lb springs, but some say being TOO stiff in the rear with an MTX car can be a problem too.

You can always try airbags inside the rear springs. That way you have some adjustment to play with.

[Shadow]

Never ran 10's on the 24's, both those runs were on the 26's, only difference was clutch and I was richer on the 10.89 run.

After thinking about this, there was 1 more difference. The 10.99 was on the stock cam @ 38 psi boost and the 10.89 was on the F4 cam @ 34psi boost.

[Shadow]

Puts me at 317 hp, I made more than that on the dyno at 22 psi, ran 29-30 psi at the track to run 104 mph.

JT's puts me at 352 whp, closer but I still think I was around 400 whp.

Have you tried an ET calculator? Might be closer as your mph is low, prob from your undergearing. Makes it look like your going faster on less hp.

Interestingly enough, Steves mph calculator seems pretty darn tootin!

We ran a Daytona about 8 years ago that I figured had to be just over 300whp. It was 2980 + 160 (driver) for a total of 3140lbs. It went 13.1 @ 108mph on street tires with a 2.1 60'. When I plug in the #'s it gives me 308.7 WHP. Seems pretty reasonable.

Here's where it really gets interesting. If I plug in the #'s from my 10.89 run at 142mph it only shows me at 466.65WHP. But if I plug in the #'s from my 136mph passes from last year it shows me at 507.5WHP!

Now here's the interesting part. When I was running last year I didn't drop the exhaust and I didn't drain the tank, but it was a calm day, so the extra weight + accurate mph (no headwind) and it seems pretty darn close!

The 10.89 run this year was against a 30mph headwind (prob knocked 1-2mph of my traps) I was running 2 extra psi fuel preasure and 1lb less boost because I didn't have a W/B anymore. I also dropped the exhaust and drained the rear tank (try to make up for the headwind) So the car was lighter, richer, less boost and the headwind was robing me some mph, really no surprise then that it only shows 466.65WHP! Again, seems pretty accurate!

[Reaper1]

What do you mean, you don't count? The "average area" is generally the Most acurate, so you count The Most!

Thanks! It's nice to matter sometimes! LOL

[22shelby]

Nice runs, JT. I would say try the 600lb springs, but some say being TOO stiff in the rear with an MTX car can be a problem too.

You can always try airbags inside the rear springs. That way you have some adjustment to play with.

this is what i did.....im not any where near the hp level JT is how ever i did notice a major diff on short times w/ the bags....DR side is up to 30 psi, while pass is at like 8 psi...

[turbovanman²]

Honestly the turbo is not that much larger than what I had on it...

Comp wheels - Very similar sizes
Comp housing - Went from a T04B to a 4" inlet S cover (intake temp reduction noticed)
Turbine wheel - Went from Stage 3 to GT wheel which is close to a stage 5
Turbine housing - From .63 a/r to .82 a/r
CHRA - From journal bearing to GT BB

So it picked up ~5mph and in addition to the turbo, it also went from 3" exhaust to 4" exhaust and a different head with a little more exhaust porting... if the turbo added more power probably due to comp cover more than anything. Hell even with the BB it spools later than the old turbo

Hmmmmmmmm, very interesting.

Have you tried an ET calculator? Might be closer as your mph is low, prob from your undergearing. Makes it look like your going faster on less hp.

I'll PM you to avoid cluttering the thread some more.

[turboshad]

Nice runs, JT. I would say try the 600lb springs, but some say being TOO stiff in the rear with an MTX car can be a problem too.

You can always try airbags inside the rear springs. That way you have some adjustment to play with.

I run 600lb springs in the rear and in my slow mo you can still see it squat and unload the slicks. I don't think I am squatting as much as JT but I would say 600lb/in isn't too stiff for heavy cars like ours. Maybe for a feather light L-body

[Shadow]

I run 600lb springs in the rear and in my slow mo you can still see it squat and unload the slicks. I don't think I am squatting as much as JT but I would say 600lb/in isn't too stiff for heavy cars like ours. Maybe for a feather light L-body

I'm only running 450lb springs in the back and as good as the Charger Might have looked launching in the 10.89 vid, (didn't squat much) I was spinning all the way through 1st and only a 1.81 60'.

So, gonna have to wait till I Really hook it up to see how things look.

That's where that Slowmo S#IT would come in real handy like!

[BadAssPerformance]

I run 600lb springs in the rear and in my slow mo you can still see it squat and unload the slicks. I don't think I am squatting as much as JT but I would say 600lb/in isn't too stiff for heavy cars like ours. Maybe for a feather light L-body

Yeah, I got 600 thinking it would be a good compromize between the track and street, but stiffer springs will be a phone call away, LOL

[turbovanman²]

What about 800?

[BadAssPerformance]

I'll let you know after I try the 600's, i can get them in 50lb increments

[Reeves]

The question is do we set the camber to 0* and toe to 0" at rest or when the front lifts?

Yes. Or about -3 camber and 1/4" toe out at rest.

you mean something along these lines????

Holy REAR SQUAT Batman!

I run 600lb springs in the rear and in my slow mo you can still see it squat and unload the slicks. I don't think I am squatting as much as JT but I would say 600lb/in isn't too stiff for heavy cars like ours. Maybe for a feather light L-body

I went from 450 to 650 rear springs this year. Didn't notice much of a difference. Want to make a bigger jump next time (1000).

[bakes]

You have to see Dicks (boostgeek) car squat i swear its on the stoppers!!!!