help with driveshaft spline size

[ShizTheBiz]

hi im taking my transmission off to get to my clutch. problem is the spline size bolts that connect each driveshaft to the gearbox. what size are they. ive tried my m8 bolt wgich was to large and m6 wad to small. ive thought of a m7 but cant find one anywhere. can anyone help me?
cheers

 

[Slimy]

I'm 99% sure you can't get an M7, they're even numbers only.

You should find you need an M8, and it's actually a small bit of corrosion that is making it seem like it's not fitting. Waggle the bit in the bolt head just to get rid of the crud, and it should work properly.

 

[ShizTheBiz]

ill give it a go. thanks mate. you can get m7's just only on ebay is the only place ive seen. cheers anyway

 

[Slimy]

I've just realised, are you having trouble with the bolts themselves, or the tool required to remove them? I kind of assumed it was the spline bit you're using to remove them rather than the bolts themselves, so I may be completely off the ball.

If you're looking at replacing the bolts, you can get replacements from SEAT for about a pound each if I remember correctly.

 

[ShizTheBiz]

I've just realised, are you having trouble with the bolts themselves, or the tool required to remove them? I kind of assumed it was the spline bit you're using to remove them rather than the bolts themselves, so I may be completely off the ball.

If you're looking at replacing the bolts, you can get replacements from SEAT for about a pound each if I remember correctly.

its getting the bolts out im puzzled on mate just the spline key size. all bolts appear to be in good order i just havent got them off yet. so a m8 will do the trick. and thanks about where to get replacements from. if any round off the hacksaws gonna have to come out ;p

 

[Slimy]

Ah, that's ok then I was answering the right question! I got my spline key from Cromwell, although they don't do an M7 size either.

This might seem like a silly question, but are you actually using a 12 point spline rather than a 6 point? The fact you call it a spline key rather than a torx key suggests you are, but I just wanted to check. I tried using a six point key initially, and that was the same. One size was too small, one was too large.

 

[ShizTheBiz]

naa defo a 12 i got my set from b&q and it said multispline set. i havent counted the points but it defo has more points on it then a torx. unless theres a half way meet between a spline and a torx?

 

[Slimy]

The only other thing is a ribe fitting, like this;

http://cgi.ebay.co.uk/250601895811

But you can see the end is much more 'square' on the splines?

This is the spline bit I used for my driveshaft;

http://www.cromwell.co.uk/KEN5827328K

 

[ShizTheBiz]

yeah it was a 12 bit spline i was sad enough to count them all lol
the bolt inside was unfortuntly rounded off. the rest worked a treat though. took me 3 hoursd to get that one bolt off :/
anyway thanks for your help man. much appreciated

 

[Slimy]

I was dreading that with mine, I really don't like the idea of any 'internal' fixing like torx or these 12 point ones. I much prefer a good old fashione hexagonal outside fixing that you can get a spanner or socket on!!

Good to hear you got it sorted though!