Ordering Hub Carrier Bolts Grade 10.9

Hello speedy/VX friends!

I do not post a lot on this forum, mainly because we have a pretty good Dutch speedsterforum since almost a year now , but I have the following story to tell

Some of our Dutch club members want to upgrade to higher grade bolts for the hub carriers (front and rear axle).
You can read about the "presumed" benefits of this upgrade in this vx topic:
http://www.vx220.org.....arning i&st=0

Anyhow, some speedy owners wanted to upgrade to get a little bit more certainty that the joints won't fail, so we started to look for good M10 bolts, grade 10.9.
But that seemed quite difficult. The problem is the corrosion protection of the bolt. In Holland I can not get hold of 10.9 bolts with a Dacromet coating.

To make the story short, I can let them be made as specials, but I do need to order quite a lot of bolts in one go, in order to keep the price per bolt acceptable.
It will be more sets than I probably can get rid of in Holland (only approx. 200 speedster owners, of which only a handfull are very serious drivers or haven't found the club yet ).
So my question is: are anyone here interested in a set of 10.9 bolts with Dacromet coating? And what do you want to spend on them?
Maybe you can get hold of these bolts in the UK for normal prices, then regard this topic as not-posted

What I can probably offer (have to receive the final quote still):

for the front:
2x M10x40 (standard 45, but if you removed a lot of camber shims, 45 would maybe not fit (holes are not completely through the hubs))
2xM10x50 (to cut down to 45, if you want to "use" as much thread as possible, which I would recommend if you want to torque to higher values than standard).
2xM10x60 (standard 65, but again, if you removed a lot of camber shims, M65 would maybe not fit).
2xM10x70 (to cut down to 65, again if you want to "use" as much thread as possible).

Rear:
4x M10x50 (will always fit, never too long as the holes are completely through the hubs).

Prices for one set would be somewhere around 8 pounds (incl. a small fee for me to compensate for the time I have and will put in it, if you don't mind...) as it's looking now. This would be excl. shipping from Holland to the UK, but this would be only around 3pounds.

Not very cheap for a set of bolts this type, but this would have the best coating you could wish for
So, how many people would be interested?

Wow, in the end still quite a long story, please forgive me

Regards,
Mike

hi mike, I would be interested, just had a standard 8.8 shear on the front nearside, ordered the oem from vauxhall, they will need to be shipped from germany, what torque ratings are the upgraded bolts?

Me too mike. Don't need them right away but it would be prudent to have a 10.9 set as spares/replacements. Dave K

Me too mike. Don't need them right away but it would be prudent to have a 10.9 set as spares/replacements.

Dave K

When the 8.8 ones snap??

For all the technical stuff behind the 10.9 bolts, just read through the topic I referred to in my first post.
If you are a little bit lazy I have copied the parts which I deem important/handy below

1. Thoroughly clean all mating surfaces, using a steel brush to remove all rust, dirt etc. and using for example brake cleaner or some other appropriate degreaser to remove any oil, grease etc.

2. Assemble parts, fit and handtighten the screws. I would recommend using a hardened washer under the screw head, as this increases the precision in reaching the correct screw pretension when tightening. The washer also lowers tightening friction and greatly reduce surface pressure on the base material, which can help prevent the screw head from "settling" (plastic deformation of the base material under the screw head, which will reduce the clamping force), especially when using 10.9 or 12.9 bolts tightened to their respective correct tighening torque. Make sure that the screw with the washer installed is long enough, so that still at least approx. 20 mm of thread is engaged.

Tightening torque:
3. Tighten the screw to the specified torque - preferably using a calibrated, good quality torque wrench - I assume it is approx. 45 Nm for 8.8 bolts and approx. 60 Nm for 10.9 bolts. Remember that the higher tightening torque of the 10.9 bolts also increases chances of stripping the threads in the hub carrier!

Proper torque is of course the first and most important thing, but Lotus also prescribes a threadlocker for these bolts: Permabond A130

You can replace this with Loctite 243, which is pretty similar if you can't get Permabond.

Even though this has no influence on the actual clamping force (might provide some thread lubrication while installing, but not much), it does increase the vibration resistance after it has cured and reduces the risk of the bolts 'un-screwing'.

This is a medium strength threadlock, so it will still release OK with a little force.

For delivery time, I will first have to wait for the bolts to be coated, which will take approximately 4 weeks . Then I just have to mail them and you can probably receive them then in one week. For your infomation: I already ordered the bolts, so help me get rid of them (600 bolts! ).

I recommend that you buy multiple sets as you normally should dispose of tension bolts after tensioning them once (that is what I read in the other topic, no sale trick! ). So if you like to play around with cambersettings..... It's a little bit of a waist maybe, and I do not know exactly HOW important it really is to dispose of used bolts... Someone has a good remark on this?
For multiple sets I will make a better price.

600 is alot!! i would stick a post on SELOC

Indeed it is quite a lot, but if 25 people order 2 sets, I am already sold out . I already have found ~10 people in Holland who are interested. So I'll wait with putting this on too many clubsites. But the fact that only two people here are interested just confirms my view on the British car enthousiasts: all (but two) car polishers!

Yes please mike Nick

I will make a reservation of two sets per person for now. When I know the final details (price is the most important I think ), you can tell me how many sets you really want. Or if you are already really sure that you want more than two sets, please let me know

, what torque ratings are the upgraded bolts?

With grade 10.9 bolts you can torque to 60Nm instead of 45

I'll have some

me too

could be a an idea to let the good ole UK VX220 folks know, that the OEM bolts can shear, especially if the load is greater, mine sheared, but I'm just a maniac on the twisty stuff, and that if anything replaced on the corners, the bolts need to be repplaced once they have been taken out, I'm sure they will all go, how do you want payment, can I suggest PayPal, happy to pay the fees

But the fact that only two people here are interested just confirms my view on the British car enthousiasts: all (but two) car polishers!

I love it, put me down for two sets

I did kipperrr I will make a list of the people here who want 1/2/3/4 sets (I will for now reserve 2sets for each interested person): TonyIles kipper NickB777 Jase_MK MikeF

kipper
NickB777
Jase_MK
MikeF

Plus R1 nur (Ben) - thanks.

Have the failuers been on the Na or the Turbo or Both???? Anybody know. I would be interested as I have a few more mods planned over the winter and will may "life" the bolts at that time. Please put me down on the list

TonyIles kipper NickB777 Jase_MK MikeF R1 nur Quick & Dirty

mine was a turbo that failed, managed to get an OEM set from Germany, but I would prtefer to fit these upgraded bolts, as I'm a bit wary of the OEM

go on then, i'll have a set, going to get a setup done soon, so they can put them in then