Stud Question....

[NitrousEdge]

And no I'm not talking about how well Greg does with the ladies.... :icon_moon :p


I (with a lot of help from Mike408) got my wheel studs in tonight and mounted up my new welds...well they hit the back of the wheel well. I put the spacers (7/16") from the front on the back and that fixes it, but the studs don't come all the way through the lug nuts, they are flush, but don't stick out at all. Will I have problems with that going through tech at NMRA or FFW????/ :thud:

[Greg@GLD]

The other guys might know better but there is a measurement in the IHRA rulebook about this. You might run into trouble Eric...

[dave bandt]

The NHRA rules say you have to have 1/2 of the stud diameter protruding beyond the end of the nut. If you have 1/2" studs....which i'm thinking you do....you need 1/4" past the end of the nut. Yes, i think you'll have problems if the studs aren't past the end of the lug nut. You better check on some longer studs......

[NitrousEdge]

I'll machine 1/4 inch off the lugs at work....

[Ghost]

what back spacing did you get for your welds cause I have 15x8 in the rear with a 5.5 bs and had no problems at all with them

and yes you would have problems depending on how strict the track is that you go to

and you would have problems in a comp..(nmra,FFW etc...etc...)

[markstang]

I'll machine 1/4 inch off the lugs at work....


will you have enough thread engagement? could you use a thinner spacer.
I made some wheel spacers at my work for my car on our cnc mill.
I can get aluminmum in just about any thickness from 1/16 -1/2 thick. in 1/16 increments. If you nedd help let me know, all the spacers that I have made now, are 5 lug & for 5/8 stud. If you would like to see one I can get a pic.

Mark


Mark

[fast1990gt]

Speaking of wheel spacers I just got mine back from zinc plating today. Check it out! 1/4" laser cut steel and they fit like a glove! I should probably get back to work now hey.....

[NitrousEdge]

will you have enough thread engagement? could you use a thinner spacer.
I made some wheel spacers at my work for my car on our cnc mill.
I can get aluminmum in just about any thickness from 1/16 -1/2 thick. in 1/16 increments. If you nedd help let me know, all the spacers that I have made now, are 5 lug & for 5/8 stud. If you would like to see one I can get a pic.

Mark


Mark

I got the wheels used off of a 99+gt, they are 15*10 with a 7" back spacing - I don't think I could use a thinner spacer and still have it work. I am using the weld lug nuts and they will still have plenty of thread engagement if I cut them a little. I may also try a different lug that jegs sells (the ones I originally wanted to use) that has a shorter head on it.

Thanks for all the help and offers guys! :rockon:

[Ghost]

I got the wheels used off of a 99+gt, they are 15*10 with a 7" back spacing - I don't think I could use a thinner spacer and still have it work. I am using the weld lug nuts and they will still have plenty of thread engagement if I cut them a little. I may also try a different lug that jegs sells (the ones I originally wanted to use) that has a shorter head on it.

Thanks for all the help and offers guys! :rockon:

well the problem is is that on a 94+ mustang with 15x10 should have a 6.5 back spacing

I dont think even going to a 3in wheel stud would be enough to make it pass tech

I have 3in race studs in the rear(and soon in the front) and I only have a 1/2 worth or thread that sticks out of the lug(centerline lugs)

[NitrousEdge]

I know what the recomended backspacing is....I saw these ON a 99GT and liked the way they were tucked in more, must be something different between 98 and 99.

I already Have the 3" race studs, they would work fine but for the spacer. I am ordering a different set of lugs and all will be good - the studs stick out of the wheel plenty far, just not out of the lug.

[Ghost]

I know what the recomended backspacing is....I saw these ON a 99GT and liked the way they were tucked in more, must be something different between 98 and 99.

I already Have the 3" race studs, they would work fine but for the spacer. I am ordering a different set of lugs and all will be good - the studs stick out of the wheel plenty far, just not out of the lug.

I wouldnt run a spacer on the rear but its your car

I have seen a few spacers run on the rear break on hard launchs and its not pretty

the class my dad used to race in they outlawed the use of spacers on the rear for that reason

[markstang]

that would be the cheep cast aluminum spacers that crack or break. they are made for multi bolt patterns, Mr Gasket sells them...... The spacers on my car have been going 9s for 2yrs now without a problem. they are machined from a plate of aluminum.


Mark

[Ghost]

that would be the cheep cast aluminum spacers that crack or break. they are made for multi bolt patterns, Mr Gasket sells them...... The spacers on my car have been going 9s for 2yrs now without a problem. they are machined from a plate of aluminum.


Mark

I meant nothing by it just sharing what I have seen

I dont know what they were using but they were running in the low 9s and I have seen 1 break causing the guy to lose it into a wall

I just dont want anything bad to happen to anyone thats all

[NitrousEdge]

will you have enough thread engagement? could you use a thinner spacer.
I made some wheel spacers at my work for my car on our cnc mill.
I can get aluminmum in just about any thickness from 1/16 -1/2 thick. in 1/16 increments. If you nedd help let me know, all the spacers that I have made now, are 5 lug & for 5/8 stud. If you would like to see one I can get a pic.

Mark


Mark

Mark - the spacer I am using now is 7/16" and I am using 1/2" studs, bolt pattern is 5*4.5 if you want to post a pic that would be great!

[NitrousEdge]

5.2 WHEELS

Must be automotive-type wheels suitable for street use. Minimum wheel size: 13-inches (33.0 cm) (unless originally equipped with smaller wheels and vehicle is equipped with original engine). Wheel studs must be threaded into hex portion of lug nut a distance at least equal to the diameter of the stud.Automotive-type wire wheels or motorcycle wheels permitted on front axle only of Dragsters weighing 1,800 pounds (816.5 kg) or less. See General Regulations 5.2.




This is the only rule regarding studs I could find online - - Mine is threaded into the hex portion of the lug almost to the end of the hex (.687"). Am I just reading this incorrectly, or is it from an older rulebook. :shrug:

[dave bandt]

No, you read it right. I was just out in the garage loading my car up last night and realized i gave you some bad info. As you quoted....they only need to be threaded into the head part of the lug nut one stud diameter. My studs are about 2 threads shy of protruding but they are more than 1/2" into the nut(I have 1/2" studs, so that's probably where i came up the the 1/2 that i posted). Come to think about it, i think WIR's rules state 2 threads or 1/2 of the stud diameter for protrusion...but it's been a long time since i raced there and i don't remember. Anyway...sorry for the mixup......

BTW, i have used wheel shims on my car ever since i bought it 5 years ago. The problem with shims is that it puts a larger bending moment on the stud, which they are not designed to handle. I dont' see a problem using small shims. Using one an inch thick would not be a good idea. If you have a car that can shake the tires it's more of an issue since the force acting to bend the studs is even greater. That's my opinion.....

[NitrousEdge]

Well, my studs now protrude through the lugs 1/4" ;)

I also found a set of hubcentric spacers for an excellent price! :rockon:

[Ghost]

Well, my studs now protrude through the lugs 1/4" ;)

I also found a set of hubcentric spacers for an excellent price! :rockon:

thats cool :rockon:

[NitrousEdge]

The new wheels and tires look HUGE compared to the 15*7" v6 stockers that I had on there before! :banana: :rockon:

[Ghost]

The new wheels and tires look HUGE compared to the 15*7" v6 stockers that I had on there before! :banana: :rockon:

when you get a chance I would love to see some pics

[NitrousEdge]

when you get a chance I would love to see some pics

Im sure there will be plenty of pics coming soon! When I get the new spacers I'll try to snap some, I am using the others on the front now (the reason I bought them) to try to get those to fit. On the 96-98's you have to do a little caliper grinding to get them to work - I plan on starting on that tonight or monday morning.. Man I am excited, still alot of work to do before my vacation, but it should all turn out to be well worth it! :banana: :rockon: