Pressing in wheel studs

[skamanfrank]

So, I have two of these hubs, which as you can see do not have any studs fitted to them:
www.ebay.co.uk/itm/FRONT-RIGHT-OR-LEFT-WHEEL-HUB-DAEWOO-MATIZ-1998-/231521716332?_trksid=p2141725.m3641.l6368

Unfortunately, I do not know what size studs the daewoo matiz uses and cannot easily find obvious replacements.

I do however, have 8 studs that are the thread I would like to use and a suitable length. The splined section appears to have a diameter of 13.2mm. The holes in the hubs are 12mm.

Would a 13mm spline be suitable for a 12mm hole?

Thanks

[Deleted]

Good luck trying to press them in!

[Dez]

the shank of the stud should be the same diameter as the hole, not the spline.

[skamanfrank]

Feb 13, 2016 20:14:56 GMT Dez said:

the shank of the stud should be the same diameter as the hole, not the spline.

Exactly, which makes me think that the shank is probably about 12mm.
The studs go straight from thread to splines and the splines are too fine to get the caliper in to measure the shank diameter.

Outer spline diameter is 13mm-ish. Hole is 12mm, so for the shank to be the same diameter as the hole, the splines would have to be about 0.5mm tall.... seems about right?

[Dez]

what thread are they? M12? id guess the shank is somehwere between 12 and 12.5mm.

[skamanfrank]

Thread of the studs I have is M12x1.5.
The studs that the Matiz would originally have had are M12x1.25

[Dez]

post a pic of the stud.

tbh, a lot of it is 'feel' for what will work as the spline profiles can be so different from manufacturer to manufacturer, but that only comes with experience. but id say 12mm will probably be too tight, 12.5 is more likely. do you have a proper press or are you hammering them in?

[skamanfrank]

Technically neither- the intention was to take them to someone with a proper press.
Pics shortly...

[skamanfrank]

Pic attached I think? Managed to break my phone in the process.

Johnny- what makes you say that? Bigger hole required?

[theheap]

You do not press them in!

You put them in place, put the wheel nut on the thread and tighten it up. The stud will be pulled into place.

Simples

[Wilk]

With the sizes provided earlier you'd strip the threads before the studs were fully seated... Been there seen the t shirt
Plus if they don't seat all the way there's a chance the wheel will work loose over time

[Deleted]

Feb 13, 2016 21:26:55 GMT skamanfrank said:

Pic attached I think? Managed to break my phone in the process.

Johnny- what makes you say that? Bigger hole required?

Yep. Bigger hole. If you say the splines are 13.3mm ish, if I had to hazard a guess I would say the hole would be around the 13mm mark. That's hole size, not drilled out with a 13mm drill and now 13.5mm. Lol.

1 mm on that sort of diameter will never go in, not in a month of Sunday's. Press them in. Tightening them in with a nut is a recipe for disaster. Good chance you stretch the threads, and you are not allowing the straight splines to bed in straight, you are trying to twist them as you go

[skamanfrank]

OK cool, thanks for the heads up- having seen how tight they were in the hubs they were removed from, I wouldn't have tried to tighten them up on the nut, that's for sure. Suprised I didn't snap the vice getting them out!

I will speak to my friend at work who is likely to have an adjustable reamer. I can use that to ream the holes and then hand them to someone with a press.

EDIT:
So, considering the holes in the hub are exactly 12mm, these would probably be a better bet (12.4mm spline diameter):

www.ebay.co.uk/itm/M12x1-5-41mm-long-12-4mm-Spline-Wheel-Stud-Honda-Fitments-/251742463048?hash=item3a9d052448:g:pMEAAOSwBahVcGPF

[hairymel]

according to here www.aitechitaly.com/pdf/disegni/ait_nuts_studs_bolts_for_wheels.pdf

matiz stud splined area is 12.4mm diameter

hth

[skamanfrank]

Feb 14, 2016 19:16:18 GMT hairymel said:

according to here www.aitechitaly.com/pdf/disegni/ait_nuts_studs_bolts_for_wheels.pdf

matiz stud splined area is 12.4mm diameter

hth

Awesome thanks. Your google-fu was obviously much stronger than mine, I'd struggled to find a definitive answer! Those ones I just linked to will be just the ticket then

Now I need to try and find the second hub that I can't see anywhere...

[hairymel]

its probably in the same 'safe' place most of my stuff has disappeared to

[kevins]

I have seen a case where If you use a hole which is too small to press a stud into you can distort the hub, it took us a while to find out what was going on!

[skamanfrank]

Feb 14, 2016 20:39:26 GMT hairymel said:

its probably in the same 'safe' place most of my stuff has disappeared to

Found it hiding in plain site in the middle of the garage floor....! Couldn't see anything of yours I'm afraid though