4l0 Disc bolts

[copper99]

I have 2 sets of different bolts on my bike, they are both the same length but on one side , they are all olive green, the other , plain zinc.

I also have a complete set, bought elsewhere from a forum member , supposedly for a 350LC which as you can see are shorter, im hoping I can use these, whats your thoughts people?

Ill be using the standard disc bolt washer/locking thing when I pop the discs back on the wheel.

[a href="|http://thumbsnap.com/ImTqacrb"]|http://thumbsnap.com/ImTqacrb[/a]



[a href="|http://thumbsnap.com/xouQ0P5m"]|http://thumbsnap.com/xouQ0P5m[/a]

[LC_BOTT]

The olive green ones are correct as far as I know, the zinc ones just look like a standard bolt from any 'hardware' store 13mm AF at a guess?

[thehut]

yea 13mm a/f the standard ones are 12mm a/f so you can tightin them up with socked. on the 13mm ones the corners catch

[copper99]

Dec 1, 2013 17:03:06 GMT 1 LC_BOTT said:

The olive green ones are correct as far as I know, the zinc ones just look like a standard bolt from any 'hardware' store 13mm AF at a guess?

Your right chaps, 13mm heads on the newer ones.

All the old reference pictures of new or NOS bikes I viewed didnt show the bikes with olive green brake disc bolts..confused.com

[brownsauce]

Does anyone know were I can get some m8x30 olive green set screws with 12 mm head ?

[loadsofmoney]

As far as I know they should be Zinc plated not olive green and were then painted over with blue like a marker pen where the the locking tab secures it.

[ulsta]

Dec 1, 2013 19:35:51 GMT 1 loadsofmoney said:

As far as I know they should be Zinc plated not olive green and were then painted over with blue like a marker pen where the the locking tab secures it.

Definately not olive, but where they zinc or chrome ?

[marsbar350]

ive got two sets of disc bolts
one set was a gold zinc colour and the other bright zinc finish
think both were used

[loadsofmoney]

Mine are bright zinc and the previous thread with the NOS bike also shows bright zinc.

[loadsofmoney]

It also stands to reason that different suppliers supplied different finished bolts,a bit like if you order NOS headlamp mounting bolts, some are olive green/black and some are bright zinc, it is the luck of the draw!

[marsbar350]

they are exactly the same bolts
even the same swirl marks in the heads
just a different finish

[steve h]

Dec 1, 2013 20:59:27 GMT 1 loadsofmoney said:

It also stands to reason that different suppliers supplied different finished bolts,a bit like if you order NOS headlamp mounting bolts, some are olive green/black and some are bright zinc, it is the luck of the draw!

Black is the new olive. The old process of producing the olive finish is no longer used, If you get new old spares they will have the olive finish, but not all NOS advertised spares are old. I think cyanide was used in the olive passivate.

[copper99]

Thanks Andy/all..Ill use the new ones I have then, they are a little shorter but cant see it making that much of a difference.

[thehut]

you might have job as the ones i tryed the corner foul. norbo sells stainless steel ones with 12 a/f heads

[steven]

Hi,

I bought a set of Standard disc bolts a few months back from Granby, and they were an olive green type colour,scimilar to the ones on the right of your pictures, they were still available.
From memory, if you use a 13mm head or a cap screw, the left hand side disc bolts fouls the speedo drive.

The M8 tapped holes in the wheel go all the way through, so slightly longer should not make a difference, as long as the bolt heads are 12mm A/F.

LC,s have J.I.S fasteners as opposed to D.I.N fasteners, thats why you get some "funny" bolt head sizes, ie..M8 with a 12mm A/F head, or M10 with a 14mm a/f head etc.

J.I.S = Japanese Industrial Standard.

D.I.N = Deutsches Institut für Normung (German Industrial Standard.) D.I.N. is more of what we use in Europe.

steven.

[copper99]

Thanks for that Steven, i think ive sussed what may have happened..My bike was a 250 and was converted to a 350, which is more than likely why it has 2 different sets of bolts in the same wheel.

The original ones looked like the attached, thats what im going for, with a 12mm head..

[a href="|http://thumbsnap.com/GdIc58Dq"]|http://thumbsnap.com/GdIc58Dq[/a]

[steven]

Hi,
I see you have the later type forks too.
I think im correct in saying, that the earlier forks did not have a screw for draining the fork oil out of them.
steven.

[copper99]

That isnt my bike mate, I got that pic from here...

www.skills.plus.com/ref/