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Comments from Chris Rado's crew chief Dave Zientara

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Old Nov 15, 2009 | 05:54 AM
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Default Comments from Chris Rado's crew chief Dave Zientara

Dave called me last night to discuss some things for our next turbo class at T1's shop and I had the opportunity to ask some questions about what was going on at the NHRA race with the mishaps on the times.

Dave said it was no mishap that they had discovered something monumental on Rado's chassis, He also said every tech inspector on the property had been by to make sure the car was legal and to try and figure out what was going on with the 60ft times. The car was found legal and that NHRA was taking some high speed cameras to the starting line for further investigation. (waiting on more info on this)

Dave went into the data and the pass that was 6.97@149 showed to have 600 lbs of brake pressure applied around the 1000ft, that was the reason for the low mph on that pass.

Mr. Dave Zientara also said the data supports the times on both runs. Dave went to more detail about the data from last year and how it in no way compares to the data that came from this weekend.

Looks like Rado's dream of being the first in the sixes might just be real.

63psi of boost in 2nd gear is nuts. Specially from a S500. That engine package has to be making over 1500hp at that psi.


I am sure there will be some very interesting stories and questions at our next Turbo School about all this. I would love to get Rado out for that weekend.

Last edited by turbodano; Nov 15, 2009 at 06:04 AM.
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Old Nov 15, 2009 | 06:11 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Congrats to that whole team. If this hold this is truly amazing. Good job!
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Old Nov 15, 2009 | 07:17 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Nice! What kinda 60' times did it have?
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Old Nov 15, 2009 | 07:55 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

.7
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Old Nov 15, 2009 | 07:59 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Looking forward to more information, and a cover shot from them on National Dragster
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Old Nov 15, 2009 | 08:03 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Originally Posted by jnv255
.7
isnt that off, thought they said it was a timing error on the pass
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Old Nov 15, 2009 | 08:05 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

if i am not mistaken i believe rado achieved a .9xx sixty foot at an event i attended at Etown (Nhra Sport Compact)
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Old Nov 15, 2009 | 08:12 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

4 second cars cut .8x 60ft thats the only reason i have a hard time buying a .7 what was the 330?
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Old Nov 15, 2009 | 08:18 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Waiting on a call back from Dave for more info.

I could see a .9XX happening on the 10.5 tires. I have seen it a lot on the ADRL side of 10.5 racing.

Not sure on the 330 but the 1/8 was a 4.38 et on the 6.87 pass.
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Old Nov 15, 2009 | 08:20 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

any videos of this car? that sounds amazing
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Old Nov 15, 2009 | 08:40 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Never mind the times to the cones. If the malfunction came from a timing system error it will be off the whole way down. The questions that should be asked is what is the MPH's at the cones where it registers MPH? With the power to weight (from what we are lead to believe of the car) a 6.87 should net 202 to 204 MPH at the 1/4 mile and roughly 160 -170 with a 4.38 1/8 mile time.
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Old Nov 15, 2009 | 08:51 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Can someone explain what happens to cause 600bls of brake pressure at 1000ft.

And still run a 6.97 et ?

I may be old but that doesn't make sense unless that was like a 6.40 pass?
What was the brake pressure at 1320ft ?
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Old Nov 15, 2009 | 09:01 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Originally Posted by 1992Si
Can someone explain what happens to cause 600bls of brake pressure at 1000ft.

And still run a 6.97 et ?

I may be old but that doesn't make sense unless that was like a 6.40 pass?
What was the brake pressure at 1320ft ?
applying brake at the 1000ft and not lifting off the throttle would not slow the car down that mutch on the et side of things.
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Old Nov 15, 2009 | 09:16 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Originally Posted by dragfan
Never mind the times to the cones. If the malfunction came from a timing system error it will be off the whole way down. The questions that should be asked is what is the MPH's at the cones where it registers MPH? With the power to weight (from what we are lead to believe of the car) a 6.87 should net 202 to 204 MPH at the 1/4 mile and roughly 160 -170 with a 4.38 1/8 mile time.
202mph to 204 mph is most def enough mph to run sub sixes.

Looking at other 4 cylinder sub six second cars like Rau's car most of his 6 second passes were around 197-199 and had an 1/8 mile in the mid 4.45 second range.

It also depends on the timing error on how it would affect the clocks. If NHRA see's a time they deem not fitting or errored for the class they deem the run having a timing error. Now if the timing error was actually at the 60ft clocks the entire run would not have errored times.

If the starting line had the error then yes the run would be junk as far as et.
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Old Nov 15, 2009 | 09:45 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Slamming on the brakes up top can have a drastic effect on mph and a small effect on ET. That's why you see odd mph and quick ets from time to time.

I hope rados times are true. He's been doing this a long time and really puts his heart in it. A .7 60' is pretty hard to believe though. Best of luck on that!
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Old Nov 15, 2009 | 10:07 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

that would have to be some serious excel from the whole, & some hard 1/8mph.
that car would not of even slowed down that fast from the 1000ft. & if it did he would have used some serious breaking & hit the wall just like hard target did.
that was a 190+trap. maybe 175-180s if the .7 were true. & i think thats generous

i call BS
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Old Nov 15, 2009 | 10:21 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Originally Posted by ALL IMPORT
that would have to be some serious excel from the whole, & some hard 1/8mph.
that car would not of even slowed down that fast from the 1000ft. & if it did he would have used some serious breaking & hit the wall just like hard target did.
that was a 190+trap. maybe 175-180s if the .7 were true. & i think thats generous

i call BS
We are all waiting on more details thats for sure.

I don't agree with your braking theory though.
For one the Hardtarget car was rear wheel drive and was off the gas when he hit the brakes. RWD cars have a lot of braking in the rear and when too much braking is applied can cause the car to loose control. Drivers can panic specially when you let off the gas pull the shoots and nothing happens.

On Rado's car the rear end is in the front of the car (FWD) and he was not off the throttle when the brakes were applied thus not locking the brakes up and causing him to loose control.
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Old Nov 15, 2009 | 10:50 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Congrats!!
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Old Nov 15, 2009 | 11:03 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

I was at the event to see rados 6.97 pass the car did look very strong off the line and down the track i did walk by to his pit and did hear rado him self saying the car had no tire shake off the line and 2nd pulled hard that the car recorded 63-65 pounds of boost i dont remanber the right number but it was in the 60s and he said that his data on both runs were showing him that the car had made its best two passes ever

i did recored the run on my point and shoot cam the video is not that grate as i was trying to watch the run in person lol sorry for how bad it is but its better then noithing. im waiting for it too upload once its down i will post it
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Old Nov 15, 2009 | 11:20 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Looking at other 4 cylinder sub six second cars like Rau's car most of his 6 second passes were around 197-199 and had an 1/8 mile in the mid 4.45 second range.


I will kick myself in the ***** if Rado's car is pulling 60fts like Rau's
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Old Nov 15, 2009 | 11:41 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Originally Posted by MR.POWERSHIFT
Looking at other 4 cylinder sub six second cars like Rau's car most of his 6 second passes were around 197-199 and had an 1/8 mile in the mid 4.45 second range.


I will kick myself in the ***** if Rado's car is pulling 60fts like Rau's

Whats so hard to believe? Rado's car is a 4 link just like Rau's but with more power. They both use the same type trans, same tires, close to the same weight (100#'s dif or so) I think Rado has a good bit nicer clutch set up. Rado had already been 1.10 60ft last year. Rau's car goes in the 1.07 - 1.09 range.

With what Dave Zientara found this weekend I could see the 60 ft being improved.
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Old Nov 15, 2009 | 11:58 AM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

ok guys here you go here the run sorry about how bad it is at the end me and my dad got a lil excited and everyone was looking at us crazy lol



http://www.youtube.com/watch?v=imqaU71LE60
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Old Nov 15, 2009 | 01:13 PM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Awesome, Awesome, AWESOME!!!

I just want to add that Rado and his crew are hands down the nicest, most down to earth, team out there (that I've personally encountered). Good things happen to good people.
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Old Nov 15, 2009 | 01:15 PM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

in for more details
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Old Nov 15, 2009 | 01:20 PM
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Default Re: Comments from Chris Rado's crew chief Dave Zientara

Originally Posted by turbodano
Whats so hard to believe? Rado's car is a 4 link just like Rau's but with more power. They both use the same type trans, same tires, close to the same weight (100#'s dif or so) I think Rado has a good bit nicer clutch set up. Rado had already been 1.10 60ft last year. Rau's car goes in the 1.07 - 1.09 range.

With what Dave Zientara found this weekend I could see the 60 ft being improved.
was it a 1.07 or a .7 ?
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