sentry65

iTrader: (11)

which kirk racing roll bar are you guys getting? the one with the X brace, or the one that goes straight back?

Do you drive the car on the street a lot?

how's the rear view with the X brace?

Has anyone ever weighed the roll bar - how heavy is it?


just how much stiffer does it feel? Is the added stiffness worth the added weight?

rabbid

iTrader: (8)

Sorry guess that came out wrong most shop that bend charge by the bend plus material plus labor then there is a set up fee

I know I charge 75 a bend + the amount for tubing + 175.00 set up fee + per weld fee and instalation . really no money in it for shop to build just one. Now if you are making minimum 10 then we can start to cut the price

mrtomcat

iTrader: (3)

so why is no shopmaking a nhra rollbar/cage for the Z.

If you look on how many 500+ hp z's are out there now all of them need roll bars and no place to buy them

Nowell

iTrader: (9)

I didn't weight mine, but its pretty heavy. I have the braces that go straight back, but there is still the cross brace down to the passanger side that goes right across the mirror view. Its not too bad, just takes som gtting used too. My Z used to be my daily driver. I love how much stiffer it is. Very noticable while cornering. I also have been dragging at the local strip and have not had any issues with it. As a matter of fact, alot of the hard core drag guys really like it alot. With my back end lightened so much (CF hatch on order) I think it was a smart investment. All in all, it took myself and my friend all day to install it, but the finished product is well worth it. Ill try and get some pictures today when I go meet with the MD crew. Ill post some up.

Alberto

iTrader: (14)

Unfortunately they dont. Not many under 11.49, and not many guys in Z's really dedicated to dragging well. Most do it for fun and dont require it even though there cars could....

mrtomcat

iTrader: (3)

Because almost all the 11.50' so far were done on stock blocks.
My point is once all these guys that are building up their engines start dragging it they will be 11.49's and better. I think we will see a few low 11's hogh 10 Z's in the next year

It was stated it's only worthwhile if it's 10 or more, you don't think we could get 10 fast Z's together for some kind of group buy for roll bars?

I think the problem is that there are only custom shops so far that do the bars. If they would be readily available people would buy them

I guess only time will tell

Alberto

iTrader: (14)

Id be interested in a roll bar. I just dont think there is a market for it as far as dragging is concerned. If 10 guys get in on this, 3 will actually put it to use and 7 will just want it...

rabbid

iTrader: (8)

Hell If you can get 10 guys together I'll do them the only issue is that these cages would have to be welded in to satisfy NHRA regs if I remeber correctley which means that I would be making a kit kinda like what you would get from Jegs or Summit. Would need to be fit and welded

MoodDude

I read the NHRA rules on Roll Bars. They require:
1.75" od x .118 wall mild steel
Minumum of 6" from roll bar to driver head
Maximum of 5" form top of roll bar to attachment to rear brace
Roll bar must attach to frame or have 6" square x 1/8" steel mounting plates w/ 3/8" bolts
Must have a 5th point on the drivers side

The Kirk Roll bar for the Z:
1.75" od x .120 wall mild steel
The rear braces are attached to the top of the hoop
The 6" depends on where you place your seat.
I don't know about the mounting plates, yet SCCA and NASA rules only require 3 - 5/16" bolts for each 3/16" thick mounting plate.
And the Kirk doesn't have the 5th point.

The funny thing is NHRA doesn't have the rule on triangulation of the main hoop, which is the most important thing on any roll bar.

Call Kirk - I bet a slight modification to their design and you are in business. And theirs only cost $350 for the Z.

Alberto

iTrader: (14)

I saw a Kirk bar in a Z yesterday its a damn nice bar...

MardiGrasMax

iTrader: (8)

http://www.swracecars.com/app_listing.asp
http://www.swracecars.com/pdf/CATpg20.pdf

S & W Racecars has a few listings for the 350Z. The did the bending for my custom 5 point in my Maxima and I did the fabrication and install. They are outside of Philly so the DC folks are in luck. Cost should be under $300 for the hardware.

mrtomcat

iTrader: (3)

They have a 350Z 8 point Roll Bar for $399...looking good

Do you by any chance have a picture of yours?

Alberto

iTrader: (14)

+1 on seeing pics the 8 point sounds promising...

MardiGrasMax

iTrader: (8)

Ive since put in a racing seat and soon a new steering wheel. The bar is mild steel because I have a mig welder, CM needs to be TIG welded. Im trying to run consistent mid 10s this year so Ive stripped out most of the interior A/C, open exhaust, etc. The bars are welded to the 6x6 metal plates then bolted through the floor to another 6x6 plate on the bottom side. The rear runners and bent so they go straight back along the roof line and donut bend down until the rear window and go in to the trunk area through the rear deck.Their are two types of padding on the bar, NHRA requires SFI approved padding anywhere the drivers helmet may impact the bars. I also put additional padding because I still take my kids for rides occasionally . If your fast enough for the bar you also need the 5 point harness, single layer fire jacket and SA helmet.

Alberto

iTrader: (14)

Nice pics...I like that setup of yours.

mrtomcat

iTrader: (3)

very cool, thanks!

mrtomcat

iTrader: (3)

thanks for calling them, I wanted to today but got sidetracked.
I think you height will be an issue no matter what.

so what you're saying they have the z roll bar for 179 in mild steel and the 399 is made out of chrome?

Swing out kits are for the driver and passenger sidebars?

mrtomcat

iTrader: (3)

thanks for clearing that up.
I'll call them on wednesday, probably will get the roll bar + the conversion kit since it's on sale and that way later on I don't have to buy anything else when it's time for a cage.

Now I just need to find a place that can do the install