Injuneer

Check the FAQ (Page 2) to see more details on this install, courtesy of Warren / "The Engineer":

The Engineer

Just in case you want to see what the Z28 looks like with the AlumaStar 2.0s (front and rear), here is a photo.

Also, it seems like many cars at the track still have the "old-school" Weld ProStars or DragLites. I wanted something different and more a modern look, so I went with the AlumaStars. And, I'm very happy with both the performance and look of the AlumaStar 2.0s.

WD

Injuneer

Your post has been moved to the new "Wheels & Tires FAQ - Drag Wheels" thread.

Thanks again for the input...... I lust after those wheels.

n2ceptor

Street Use???????????? Missing "Not For"???????

The Engineer

When you copied this photo, you “did not” also copy the caption with it, which discussed and illustrated the requirement to possibly install longer studs when using a wheel spacer. Again, the lug nut was remove “intentionally” to illustrate the longer stud.

Also, while the car is “technically” street-legal (current tag and insurance) it is used “only on the track” with the Weld AlumaStars 2.0s.

WD

Injuneer

I suspect the words "NOT FOR" are blocked by the center cap in the photo.

mdacton

I just have "old school" draglites.

I like your wheels, I hope I can afford some this year

They let you run with those lug nuts?

I plan on going to a 1/2" stud when I do the strange brakes, but I have short studs now too. They always say I need to change them but I never have. The last big event I ran was in 02 anyway

The Engineer

The “open-end” lug nut requirement is a common misassumption at many tracks and with some racers (from what I have determined). Possibly at one point in time that was a rule book requirement, however, the "current" NHRA rule book does not establish that requirement.

Reference; NHRA Rule Book, Section 16, General Regulations, Wheel & Tires:5, 5.2 “does not” mention any requirement for open-end lug nuts in that paragraph. Additionally, the stud and lug nut illustration shown in that paragraph is actually a “closed-end” acorn nut.

On the rears I do run open-end lug nuts.

WD

mdacton

Well maybe its not a rul anymore but it used to be 1 thread had to be through the end of the nut.

Injuneer

Studs do not have to stick out past the end of the lug nut. They only need to engage "one diameter" length of threads, in the hex portion of the lug. If you are running 1/2" studs, you have to have 1/2" length of threaded engagement between the stud and the hex in the lug. If the hex portions of the lugs is 1" long, the end of the stud can be 1/2" inside the lug. That is clearly shown in the illustration in the NHRA rule book.

Individual tracks can establish any requirements they want, as long as they are not less restrictive than NHRA rules.

mdacton

maybe I misunderstood that, b/c I ran the stock studs on the front with the really long nuts, It must not be in the hex portion enough.

Injuneer

Correct... the Weld Pro-Stars have a 1.35" long shank style lug. Both George B. and I were running them with stock studs on the fronts, and there was about 1" of thread engagement, but most of it was in the shank, not in the hex. We both got a "one more time and you're out of here" warning at Englishtown on the same day. They had to pry the plastic caps out of the open ends of George's studs, to determine that there was not enough engagement in the hex.

The 2.67" LPE 12mm studs I have now are just barely long enough to meet the tech inspection, because even though the unthreaded ends of the studs stick outside the lug, the threads are still down inside the lug.

mdacton

Fred is the 2.67" the thread or the whole stud?

I need to get something, I may just get 1/2" 3" long and cut the ends down on a mill or something. Also are those pressed in?

Injuneer

The LPE 12mm studs are 2.67" to the ends of the thread, and then thay have more than 1/2" of unthreaded length..... hence I hate to put my street wheels on:

http://www.injuneer.com/images/photo...s/DCP02502.jpg

neil350

Some Firebird pics