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

[Rampage16V]

Congrats on the new best times!!! Wish you were closer , would love to come out and watch!
Sorry to hear about the problems. Time for a pricey vibration dampner?

[Aries_Turbo]

Time for a pricey vibration dampner?

or at least try a stock damper.

Brian

[BadAssPerformance]

Huge congrats on the new PB Sucky for the break but at least you have all winter to make it better. It sure beats breaking in May. Did you get your LC up a running for this event?

Thanks! and yeah, I used it on every run, seemed to work OK, was just getting to the point of lowering it to try to tune out the wheelspin, LOL

Congrats on the new best times!!! Wish you were closer , would love to come out and watch!
Sorry to hear about the problems. Time for a pricey vibration dampner?

Thanks! We got video, I just gotta get it uploaded! I'm thinking of the damper or the billet OP rotor or both...

or at least try a stock damper.

Brian

Stock pulley is not as much of a damper as it is a mass... its huge and will get in the way of all my timing stuff ... but still a possibility

[BadAssPerformance]

OK, just did the math... 2750lb @ 135.97mph ~ 580whp

[bakes]

Time for a dry sump oil pump system

Nice 1/4 times to end the year with

[BadAssPerformance]

Thanks. Yeah, I thought about the dry sump... or is that spelled Dry $ump?

[bakes]

just have to watch ebay they come up once and while cheap
http://cgi.ebay.ca/BBC-BIG-BLOCK-CHE...item2c5825e274

[turbovanman²]

Nice finish, that thing is hauling, Bummer you broke it but at least you didn't window it,

OK, just did the math... 2750lb @ 135.97mph ~ 580whp

Seems awfully high, I found one, came out at 484 crank hp, lol.

[Aries_Turbo]

Stock pulley is not as much of a damper as it is a mass... its huge and will get in the way of all my timing stuff ... but still a possibility

it does damp though. there is a center hub, a rubber layer and an outer iron ring.

there are all different sizes of timing wheels.

Brian

[glhs0426]

If you need a pump to put the billet gears in LMK.

[SebringLX]

Congrats on the new best times! Wish I could have been there! Hopefully you can get all this stuff sorted out by the time the track opens back up in the spring, plenty of time.

[Shadow]

Seems awfully high, I found one, came out at 484 crank hp, lol.

JT's WHP estimate is deff closer than whatever calculator You used Simon.

The Charger is right around 515WHP on a Mustang Dyno the way I ran it at the track. It typically traps 135-136MPH as is. I recently weighed it on a semi-trailor weigh scale. 2690 with me in the driver seat, that's street weight and with a full tank of gas.

When I put on the slicks I shave 40lbs off the front tire/rim combo, when I swap on the matching rears I shave another 15lbs (really need to get some lightweight rear tire/rims!) My race seats save me another 40lbs and draining the rear tank saves me another 80lb or so. But the 3gal fuel cell is about 30lbs when I fill it. I can also drop my exhaust to the downpipe and save another 60lb if I so choose (I usually just open the dump)

So 2690-145 = 2545lb race weight, 2485 IF I drop the exhaust.

JT's car weighs 265lb more which would prob take at least 40 more WHP at this type of speed/E.T. to make up for the weight. (prob more!)

That's 555WHP Minimal by real world comparo as far as I can tell........

[SebringLX]

Simon is just upset because his Ostrich won't talk to him anymore, and refuses to run as fast as JT's car.

[BadAssPerformance]

it does damp though. there is a center hub, a rubber layer and an outer iron ring.

there are all different sizes of timing wheels.

Brian

I'll have to take a look at one.

If you need a pump to put the billet gears in LMK.

Well I need a pump either way, LOL! Got a new one on the shelf?

Congrats on the new best times! Wish I could have been there! Hopefully you can get all this stuff sorted out by the time the track opens back up in the spring, plenty of time.

Simon is just upset because his Ostrich won't talk to him anymore, and refuses to run as fast as JT's car.

Thanks Josh, wish you were there too! I'll get the video up tonight...

I'm pretty sure Simon doesn't like calculations because they don't have a factor in them for tool-shed-like vehicles

[BadAssPerformance]

JT's WHP estimate is deff closer than whatever calculator You used Simon.

The Charger is right around 515WHP on a Mustang Dyno the way I ran it at the track. It typically traps 135-136MPH as is. I recently weighed it on a semi-trailor weigh scale. 2690 with me in the driver seat, that's street weight and with a full tank of gas.

When I put on the slicks I shave 40lbs off the front tire/rim combo, when I swap on the matching rears I shave another 15lbs (really need to get some lightweight rear tire/rims!) My race seats save me another 40lbs and draining the rear tank saves me another 80lb or so. But the 3gal fuel cell is about 30lbs when I fill it. I can also drop my exhaust to the downpipe and save another 60lb if I so choose (I usually just open the dump)

So 2690-145 = 2545lb race weight, 2485 IF I drop the exhaust.

JT's car weighs 265lb more which would prob take at least 40 more WHP at this type of speed/E.T. to make up for the weight. (prob more!)

That's 555WHP Minimal by real world comparo as far as I can tell........

Nice explanation Rob. I had way too much tire spin to really trust the mph to be 100% accurate but it's definitely closer than the ET for calculated whp, LOL!

You said you trap 135-136, but your best ET is at 134, I'm guessing that run had a better short time? What 60's do you usually get on those 26"s?

[turbovanman²]

Simon is just upset because his Ostrich won't talk to him anymore, and refuses to run as fast as JT's car.

Hahhaa, it ignores me, head must be in the sand,

I never will run as fast at JT, too much weight,

I'm pretty sure Simon doesn't like calculations because they don't have a factor in them for tool-shed-like vehicles

Yeah, there is no tool shed math,

JT's WHP estimate is deff closer than whatever calculator You used Simon.

The Charger is right around 515WHP on a Mustang Dyno the way I ran it at the track. It typically traps 135-136MPH as is. I recently weighed it on a semi-trailor weigh scale. 2690 with me in the driver seat, that's street weight and with a full tank of gas.

When I put on the slicks I shave 40lbs off the front tire/rim combo, when I swap on the matching rears I shave another 15lbs (really need to get some lightweight rear tire/rims!) My race seats save me another 40lbs and draining the rear tank saves me another 80lb or so. But the 3gal fuel cell is about 30lbs when I fill it. I can also drop my exhaust to the downpipe and save another 60lb if I so choose (I usually just open the dump)

So 2690-145 = 2545lb race weight, 2485 IF I drop the exhaust.

JT's car weighs 265lb more which would prob take at least 40 more WHP at this type of speed/E.T. to make up for the weight. (prob more!)

That's 555WHP Minimal by real world comparo as far as I can tell........

Interesting, either way, he's flying,

What method are you guys using? I just googled a caculator,

[Shadow]

Nice explanation Rob. I had way too much tire spin to really trust the mph to be 100% accurate but it's definitely closer than the ET for calculated whp, LOL!

For our 2 cars it's pretty easy to compare. Very close in MPH and E.T. both MTX cars, and both running the same gearing. Only real difference is weight.

Now most ppl still think along the lines of 100lb=10hp=1/10 sec. Just like HP calculators, that works well for car in the mid 11 - mid 13 sec times. Once you start exceeding 120mph trap speeds, wind resistance and other factors come into play and you start to need More to do the same thing!

I remember working down through the 11's. In the high 11's I would shave 1/10th for every MPH I would gain and at about 10WHP. By the time I reached the 10's I was only gaining 1/10 for about every 2MPH I would gain. So 1/10th was now costing me more like 20WHP.

In comparison, we pulled 100lb off a 13 sec car 10 years ago and it gained 3 1/10ths!

Calculators can make a slow car look good and a fast car look bad, specially a FWD with a real high MPH! So you were right to use a MPH calculator rather than E.T.

In comparison, Simons calculator would prob be very close on his own application, because he fits in that accurate middle ground area.

You said you trap 135-136, but your best ET is at 134, I'm guessing that run had a better short time? What 60's do you usually get on those 26"s?

Actually, that run had one of my worse 60's (for one of my faster runs)

I cut a 1.81 spinning the 26's through 1st but still went 4.83 to the 330'

In comparison, my 10.99 run was on a 1.72 60' going 4.85 to the 330'

I believe the difference is the clutch, otherwise how do I gain 1/10th from my 60' to my 330' ? So even before last year my clutch was slipping a bit on the launch!

And don't forget, I was going against a 30mph headwind, so my MPH would have prob been 135.xx on that run as well if not higher.

I have cut 1.6x 60's with this car, but in the last two years I've only got to the track twice! Not enough time to really dial in the car with the new clutch/power it's making.

[turbovanman²]

In comparison, Simons calculator would prob be very close on his own application, because he fits in that accurate middle ground area,

That's not nice,

[Shadow]

That's not nice,

It was at least AS nice as you suggesting JT had 480 crank HP!

[Shadow]

My bad, just noticed 2 things JT. Your still running 24' slicks and your 3.50 geared (thought you were straight up 568)

Interestingly enough, that still pretty well evens out to my 26' slicks with 3.85 gearing.

Even more interesting, I would prob pick up a couple mph IF I went back to 24' slicks.

EVEN MORE Interesting, my best 60's are still from when I was running those 24's!