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Jason Moyle Racing
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#Post#: 611--------------------------------------------------
Drive shaft bolts
By: Tim Watson Date: December 23, 2012, 4:34 am
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I have the solution and it only costs a packet of Jaffa cakes!
After a day at Curbourgh in August one of my drive shafts kindly
decided to detach itself a few days later. Fortunately I was
only doing about 10mph! I managed to retain all the bolts and Mr
AA man put them back in so I could get home.
I have just done a lot of work to the car and while I was at it
thought I'd do something about the drive shaft bolts.
I got a new set from VW and took them to a machinist at work
armed with a packet of Jaffa cakes. He drilled a 1.2mm hole
through the head of each one.
I then replaced all the bolts with my new ones, a dab of thread
lock for good measure followed by a bit of wire locking. Some of
my neatest ever, (I'm an aircraft technician) I do a lot of wire
locking!
Now the bolts won't come undone and I have peace of mind.
Feel free to do this yourselves if you want to.
Keep an eye out for my JMR cylinder head fit thread soon.
#Post#: 612--------------------------------------------------
Re: Drive shaft bolts
By: Tim Watson Date: December 23, 2012, 4:41 am
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Sorry for the poor picture quality but you get the idea.
#Post#: 613--------------------------------------------------
Re: Drive shaft bolts
By: Stooza Date: December 23, 2012, 7:22 pm
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Nice work Tim, can this be done for flywheel bolts?
#Post#: 614--------------------------------------------------
Re: Drive shaft bolts
By: Tim Watson Date: December 24, 2012, 3:59 am
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Hi mate.
Unfortunately not, the bolts are too far apart and are recessed.
You could do it for the pressure plate bolts.
I'm still racking my brains on how to fully secure those bloody
fly wheel bolts. But I'm sure someone would have come up with a
method by now.
Tim.
#Post#: 615--------------------------------------------------
Re: Drive shaft bolts
By: JMR Date: December 24, 2012, 4:54 am
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Great idea Tim...never gave that a thought!
I've not seen an issue with c.v bolts myself but prevention is
far better than cure...well done.
As for flywheel bolts...after an issue on a high power 16v I
used an ARP bolt for a Ford Pinto...length adjusted...with a
think H/D washer under the head (washers MUST be fitted if doing
this due to the underhead profile of the Pinto bolt) and torqued
15ib higher than the std bolts (70ib/ft v's 55). So far so good
on the big power engine, and I've just done the same thing on a
2ltr 8v road spec engine after finding evidence of the pressure
plate fretting a little on the crank...it appears to be a 2ltr
issue as I've never seen it on any of my 1800's to date.
To save chopping bolts there will be a JMR bolt kit coming in
the new year for the pressure plate to crank fixing.
#Post#: 616--------------------------------------------------
Re: Drive shaft bolts
By: chrismc Date: December 24, 2012, 5:12 am
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The flywheel bolts are a special case.
They don't work loose- but tend to bend/snap due to the shear
loads applied to them through increased rpms/torque
On Tims car I had extra stainless steel dowels (x4) added to the
flywheel that locate tightly into the pressure plate &
(hopefully) transmit the radial/shear loads between the two.
This then leaves the x9 flywheel bolts to purely secure the
flywheel to the pressure plate & only take tensile loads....
Time will tell if they hold out.....
#Post#: 626--------------------------------------------------
Re: Drive shaft bolts
By: RobT Date: December 26, 2012, 12:11 pm
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Arp already make a flywheel to crank bolt set for 16v, 02a-type
teansmission.
I bought a set from eurospec sport in usa a few years ago and
not had an issue since. Fitted with an autospec ali flywheel
that i precision drilled exactly to fit the arp bolt shanks.
#Post#: 627--------------------------------------------------
Re: Drive shaft bolts
By: GEL Date: December 26, 2012, 1:03 pm
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Neat work Tim !
Never had an issue with drive shaft bolts on Mk1 & 2 Golf`s
myself.
Flywheel bolts ... pp chrismc, those on my Mk2 16v using 7800
`went soft` after a few thousand miles, replaced with standard
as I don`t believe there is an ARP or other direct replacement
for the 020 kit.
EDIT: Was a 2ltr with a lightened flywheel
#Post#: 633--------------------------------------------------
Re: Drive shaft bolts
By: JMR Date: December 27, 2012, 6:43 pm
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Much different to the 020 bolts Rob?
All my stuff has been 020 based to date due to the regs we run
ours & customers cars too so I've yet to look into 02A/02J type
transmissions yet...but it could be coming on a project in the
not to distant future.
It appears to be mainly a 2ltr issue...I've seen it on high
power/high rpm 2ltr 16v's and recently on a fast road type 2ltr
8v....never seen it on any of my 1800's to date.
#Post#: 635--------------------------------------------------
Re: Drive shaft bolts
By: RobT Date: December 28, 2012, 2:38 am
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I think they are longer than 020 due to flywheel being a thicker
piece, specs hete from 2006:
http://www.clubgti.com/showthread.php?109279-ARP-flywheel-bolts-UK-supplier-on-…
Mark Yates, now one of heads at Revo, ex-BRM ex-Minshaw golf
touring car engine builder, told me that they used to have a lot
of problems with 020 pressure plates cracking between the bolt
holes,so used a secondary plate to help stop this. Ever seen
this?
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