Jump to content
HybridZ
Tony D

DC Water Jet's 202mph Z-Car

Recommended Posts

What is the "test mule" but a stock car in original form? The G-nose car was tested once, at stock ride height, with no other alterations. There is no "better" or "best" in this situation, there is only "make the car work at the given performance plateau." The car can work in either trim, as long as the air does not make it in the front opening. You will note that the ONLY total CD excursion below .40 is the red test mule with MSA type 3 air dam with like 90% of it all blocked off (in a form not pictured in the thread)

 

The G-nose car, like the stocker, was used at stock ride height and hit only in standard configuration IIRC.. I do not see the full backstory and can't remember where it all went at the moment, but in the end, there were really two cars which were used as controls to test various pieces, and then two (maybe more? maybe more were planned?) cars to test as baselines to compare the baselines of the two "variable" cars. There was ALOT of data trying to be grabbed in one day and they did their best to make it broadly informative.

Share this post


Link to post
Share on other sites
I think it's awesome that the "Basic, bare bones" shape of the Z is more aerodynamic that that hideous G-nose everyone froths at the mouth over.

...

I guess it would be WAY too much to ask for a formal public apology from you guys, right?

 

I for one was confused about your first statement, (as after re-reading I think daeron was perhaps as well?) when you said `basic, bare bones' I assumed you were referring to the pic of the blue zed without a front, and essentially a square box hanging down.

 

Also, get off your freaking high horse.

 

Dave

Share this post


Link to post
Share on other sites
Tube on back bumper of TonyD's car: parachute, its a speed record car.

 

Daeron, I know a little something about a "speed record car" as you say and that doesn't look like any parachute I've seen on any race car or at Bonneville. You could be right but every chute I've seen on a non-streamliner looks something like the enclosed pic. I know our LSR 280ZX uses a normal chute.

 

S72-42020BK.jpg

 

Tony, please educate me. Is that a parachute on the 2+2 like Daeron suggests or ?????

Share this post


Link to post
Share on other sites

The parachute was not on the car in that photo. It's not required for the G/PRO record attempt (was around 141).

The pipe and roller (which is what you're seeing) is for the pushbar on the chase vehicle to push the car off the starting line, and when you're recovering pushing it back to the pits.

The size is due to having some 1" foam and shag carpet wrapped around it. Without it, you WILL swear and likely seriously injure yourself walking around the back of the car quickly one time, and get caught RIGHT BELOW THE KNEES with that damn thing! With the padding and carpet on there, it's just an 'Oh yeah' moment. When it's just the piping bare...well, it doesn't feel good at all...

 

The parachute we have is as JGK showed, and goes on a separate superstructure that is not installed (but you can see the holes for it in the bumper...)

 

As for "Mr. Fluid Dynamics", he needs to do more than read the results, he needs to read the extensive conversation that Alan Thomas added in regards to the G-Nose "As Tested in the Wind Tunnel" compared to what a real factory Nissan unit looks like.

 

Yeah, they put them all over cars in Japan for the SCCN Races because they weren't functional. Go back to tending your outdated Eagle. FYI, take a look at the airframe design date on that pig. The McDonnel Douglas Assembly line was pumping those out when people were still listening to disco. That's not a 'new' airframe by any means. Hell it was over 10 years old when I worked on it...24 years ago!

Share this post


Link to post
Share on other sites
Found another Z from Bonneville, I dont know anything about this one or the previous, Maybe Tony knows something about them?

 

Cool. I'm not sure where you got that picture but here's the detail. The car is a 1978 280Z that was my friend Oz's first attempt at a land speed record. The picture was taken in 1979. The car had a turbocharged L28 and eventually went 188mph for the record at the time. The car was retired and sold to a guy in California. Unfortunately it was in a garage during a major earthquake and suffered fatal damage from falling shelves and engine parts.

Share this post


Link to post
Share on other sites
Cool. I'm not sure where you got that picture but here's the detail. The car is a 1978 280Z that was my friend Oz's first attempt at a land speed record. The picture was taken in 1979. The car had a turbocharged L28 and eventually went 188mph for the record at the time. The car was retired and sold to a guy in California. Unfortunately it was in a garage during a major earthquake and suffered fatal damage from falling shelves and engine parts.

 

Live by the parts hoard... die by the parts hoard... RIP

Share this post


Link to post
Share on other sites

The first photo appears to be Mike Mika's car, the one we copied in our attempt to break their record set in 75.

 

Question is where did you find these photos. They would have been invaluable during the protest discussions, and are now downloaded to my hard drive for printing and putting into the three-ring folder we keep with the cars white book (you know the one...)

 

If either of you could give me more links so I can view these photos from their original sources, it would be appreciated. It was pulling teeth at Isky to get them to turn loose the F/P 280 Coupe photo that was there---but the signed and dated information on the BACK of the photo was more important to us than the photo itself (I had taken current photos of the car in the Nissan Museum).

 

Didn't expect to see either photo! NEAT!

 

As far as 'live by the parts hoarde, die by it...

 

40' Sea Containers move with the ground. If you know how to pack them, nothing gets damaged in an earthquake!

Share this post


Link to post
Share on other sites

Tony, PM me and I'll see if I can help.

 

The first photo appears to be Mike Mika's car, the one we copied in our attempt to break their record set in 75.

 

Question is where did you find these photos. They would have been invaluable during the protest discussions, and are now downloaded to my hard drive for printing and putting into the three-ring folder we keep with the cars white book (you know the one...)

 

If either of you could give me more links so I can view these photos from their original sources, it would be appreciated. It was pulling teeth at Isky to get them to turn loose the F/P 280 Coupe photo that was there---but the signed and dated information on the BACK of the photo was more important to us than the photo itself (I had taken current photos of the car in the Nissan Museum).

 

Didn't expect to see either photo! NEAT!

 

As far as 'live by the parts hoarde, die by it...

 

40' Sea Containers move with the ground. If you know how to pack them, nothing gets damaged in an earthquake!

Share this post


Link to post
Share on other sites

I have a dream. A dream of vast expanses of dry lake beds and salt flats..and attaining my speed licenses from the SCTA! :)

 

I hope, one day, to be able to at least go for my 150 before I die.

If you guys need a sponsor or even someone to scrape the salt off, or even air up the tires, I'll be there ASAP!

Share this post


Link to post
Share on other sites
I have a dream. A dream of vast expanses of dry lake beds and salt flats..and attaining my speed licenses from the SCTA! :)

 

I hope, one day, to be able to at least go for my 150 before I die.

If you guys need a sponsor or even someone to scrape the salt off, or even air up the tires, I'll be there ASAP!

 

If 150 is your goal, you should get with the USFRA (Utah Salt Flats Racing Association) they hold FAR more events at the Salt than the SCTA sponsors, and their requirements for the 150mph class are considerably less than going the full on dedicated race car approach. There is a guy in SLC that is prepping his street-driven S130 for their 150mph touring car class for that very same goal.

 

It's a much easier way to get a feel for the car at speed, do it on the salt, and have several attempts a year to do so. It's the Utah equivalent of us SoCal guys running at El Mirage to prep for Bonneville each year.

 

To have a dedicated race car is one thing. To have a certificate for your street car that says you have officially gone 15X.XXX Mph on Such-and-Such a Date, as certified by the USFRA... HOW COOL IS THAT?

 

Curiously, all those guys with 'Stock 160mph 240/260/280Z's' have never taken me up on the opportunity for me to pay their entrance fees at an USFRA event to prove me wrong about the speed capability of a STOCK (or triple webered and lowered) 240Z...

 

Hmmmmm...

 

I digress...

 

Seriously Though, check out the Utah Salt Flats Racing Association for information. It will only infect you further, though. Lets not lie about it. Once you get it, there is no cure...

Share this post


Link to post
Share on other sites

Oh, and Filmjay, check out ECTA, they hold land speed racing events over weekends (all two-day events, which is nice) at Maxton Airfield in Laurinburgh NC. That's less than a 14 hour drive from Mayfield KY, and they get competitiors from as far away as Alabama!

 

Same atmosphere and on concrete!

Share this post


Link to post
Share on other sites

Wow that 300ZX looks subtly radical!! The grille seems almost totally blocked off, the front lip of the car naturally has a bit of a splitter on it, and I can only assume that is some sort of air duct to let air move through the car rather than around the windshield? What is the silverish thing in the midst of all that? Car looks like it is riding LOW too, that looks like a wild ride!!!!

 

The 280ZX is nice looking, too.. what are those doubled hoses coming up above the intake for each cylinder, fuel lines? Carb or EFI? And is that an exhaust pipe running along the passenger rocker?

 

Lots of questions, I know.. not looking for an instant answer (you DID say "no info") just shooting in the dark wondering if anyone else has anything to say..

Share this post


Link to post
Share on other sites

200+ mph 2 liter Z? Cool thread!

 

 

With the front end closed off like in JGK's photos I could see nice slipstreaming. I just don't know what the function of that silver section is...and it looks like it was added this year. Perhaps it's ballast. I've seen a lot of stuff done to keep front ends planted.

 

Ballast at the front gives more aerodynamic stability. If the back end is "moving around" as mentioned, greater aero stability margin should help.

Share this post


Link to post
Share on other sites
If 150 is your goal, you should get with the USFRA (Utah Salt Flats Racing Association) they hold FAR more events at the Salt than the SCTA sponsors, and their requirements for the 150mph class are considerably less than going the full on dedicated race car approach. There is a guy in SLC that is prepping his street-driven S130 for their 150mph touring car class for that very same goal.

 

It's a much easier way to get a feel for the car at speed, do it on the salt, and have several attempts a year to do so. It's the Utah equivalent of us SoCal guys running at El Mirage to prep for Bonneville each year.

 

To have a dedicated race car is one thing. To have a certificate for your street car that says you have officially gone 15X.XXX Mph on Such-and-Such a Date, as certified by the USFRA... HOW COOL IS THAT?

 

Curiously, all those guys with 'Stock 160mph 240/260/280Z's' have never taken me up on the opportunity for me to pay their entrance fees at an USFRA event to prove me wrong about the speed capability of a STOCK (or triple webered and lowered) 240Z...

 

Hmmmmm...

 

I digress...

 

Seriously Though, check out the Utah Salt Flats Racing Association for information. It will only infect you further, though. Lets not lie about it. Once you get it, there is no cure...

Tony D: I am restoring a 1971 240Z. A SBC 383 stroker, 500HP/500FtLbs Torque, is intended to go into it along with a 93-97 T56 with 0.50 6th gear and 3.7 CLSD R200 with CV half shaft and BEEFY MM stub axles. Without wind drag, 6000 rpm in top gear = 231mph. I want to install a vertically extended rear wing for rear down force and an air dam in front extending as close to the ground as possible with a NASCAR type horizontal splitter at the bottom of the air dam. I want to keep the openings on the front of the air dam to the smallest possible with good cooling and Ram Air for engine intake air. I would like to try to hit or surpass 150MPH without the front lifting. Your comments please.

Share this post


Link to post
Share on other sites

i am guessing but i think that alot of cars use a water tank in back instead of a radiator.like 20 gallons or so.its enough to run the course .no radiator openings at all.the weight over the back wheels helps for traction-its not pavement.i dont think a light car is a big deal in this case.as far as a trans with big od ratio-there is a critical max speed on any driveshaft.i am not into math-but there is calculations for length and diameter.even if its perfectly balenced.i would get a ford 8.8 irs out of a late 90's tbird or lincoln mark 8 and not spin too many revs on the drive shaft-you can get a 2.8 ratio

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×