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Author: Subject: Bolt head marked 110....
r1_pete

posted on 17/6/19 at 04:22 PM Reply With Quote
Bolt head marked 110....

Looking to replace some flywheel bolts.

They are M10 x 1mm, with a head marking - 110.

Can anyone help with what 110 means??

Thinking I need at leat 10.9 grade to replace, unless 110 means a higher grade.

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nick205

posted on 18/6/19 at 08:49 AM Reply With Quote
I don't know what the 110 refers to and can't find anything obvious on internet searches either. I'd start by speaking to a decent fastener supplier to see if they can tell you and supply suitable replacements.

You mention they're for a flywheel. Could you source some bolts from the manufacturer - e.g. Ford?

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obfripper

posted on 18/6/19 at 04:31 PM Reply With Quote
There's a couple options here;
Vag , vauxhall, ford all use m10x1 bolts, i have seen 10.9 , 11.9 , 12.9 marked on those, as well as unmarked special bolts or manufacturer specific id codes.
Is there any chance the marking is 11.9 and poorly formed? - this is often the case with vag flywheel bolts.
I know Inbus make non standard bolts marked with tensile strength in kg/mm≤, 110 would equal 1070N/mm2 which is slightly higher than a standard iso 10.9 bolt.

LUK do a selection of replacement flywheel bolts that cover at least 70% of modern vehicles, if you can find the part number via the luk web catalog and stick that into the eurocarparts search bar it should give you a price and availability - the ecp lookup does not usually give flywheel bolts as an option even though they can supply them.

Dave

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big_wasa

posted on 18/6/19 at 05:23 PM Reply With Quote
Arenít fords bigger than m10 ? I am sure a Zetec is m11
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obfripper

posted on 18/6/19 at 06:06 PM Reply With Quote
quote:
Originally posted by big_wasa
Arenít fords bigger than m10 ? I am sure a Zetec is m11


There are quite a few a variations, cvh is m10x1, zetec m11x1, duratec m12x1, psa sourced diesels m9x1, lynx m10x1 for just a few, the marking of bolt grades varies across all of them.

Dave

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r1_pete

posted on 18/6/19 at 08:38 PM Reply With Quote
Cheers all, they are for a manual flywheel on a V6 24v Cosworth engine, which were mainly auto, so the parts suppliers donít keep them.

The engine has obviously been run without a spigot bearing as all the bolt heads were knackered where they were in contact with the gearbox shaft.

12.9 M10 x 1 with socket heads are common, canít find any hex heads.

How long are CVH flywheel bolts? Anyone know...

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40inches

posted on 18/6/19 at 09:55 PM Reply With Quote
I had some hex/flange head ones that I used on the Jag flywheel, I'll have a look round tomorrow Pete, they may have gone AWOL during the house move
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40inches

posted on 19/6/19 at 08:28 AM Reply With Quote
Sorry Pete, can't find any I used them on the prop shaft to diff as well.
So I used them all, or they are hiding in the crap that came from the old house.

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obfripper

posted on 19/6/19 at 09:29 AM Reply With Quote
The cvh bolts are m10x1x23
Standard v6 cosworth manual is m10x1x32.5
Auto v6 cosworth is m10x1x38

I've had a look at work and through my odds and ends;
Vag N91006101 is close at 35mm with a 15mm flanged hex head and 12.9 grade.
Vag N90975601 is 32mm but has a xzn cap head instead, unmarked grade but would assume at least 10.9.
Pinto bolts are 28-30mm if you can find some uprated ones and at the longer end of the range.

Dave

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mcerd1

posted on 19/6/19 at 11:17 AM Reply With Quote
quote:
Originally posted by obfripper
Pinto bolts are 28-30mm if you can find some uprated ones and at the longer end of the range.



ARP ones for pinto's / cossie YB's are ~29mm lg (1.15"

burtons sell cap head ones that are 30mm lg





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r1_pete

posted on 21/6/19 at 08:01 PM Reply With Quote
quote:
Originally posted by obfripper
The cvh bolts are m10x1x23
Standard v6 cosworth manual is m10x1x32.5
Auto v6 cosworth is m10x1x38

I've had a look at work and through my odds and ends;
Vag N91006101 is close at 35mm with a 15mm flanged hex head and 12.9 grade.
Vag N90975601 is 32mm but has a xzn cap head instead, unmarked grade but would assume at least 10.9.
Pinto bolts are 28-30mm if you can find some uprated ones and at the longer end of the range.

Dave


Cheers,

The VAG flanged bolts would be ideal, Iíll get searching...

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scimjim

posted on 21/6/19 at 09:17 PM Reply With Quote
quote:
Originally posted by r1_pete
Cheers all, they are for a manual flywheel on a V6 24v Cosworth engine, which were mainly auto, so the parts suppliers donít keep them.

Did ford ever put a manual box on the 24v cosworth v6? I thought you had to use the 12v flywheel etc to fit the type 9, T5 or MT75.

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r1_pete

posted on 22/6/19 at 08:53 AM Reply With Quote
Yes they produced manual cars but they were all 4 wheel drive.

I had a 4 wd and a 2 wd mt75 box I was going to amalgamate to make a 2 wd v6 box, but they got stolen along with an RX8 box and other un identifiable metal....

So Iím back to parts gathering again....

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r1_pete

posted on 22/6/19 at 01:03 PM Reply With Quote
Thanks all, I cross referenced the numbers with luk parts and got a set from euro car parts just up the road from me.

Sorted thanks to lcb once again....

Cheers.

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