what impact could loose 16v center valve cover bolts cause?

[jdbubb at ix.netcom.com (Dan Bubb)]

You pretty much need the kit. The tap is special since it is the same pitch
but a bigger diameter. Plus there is the insertion tool. I think I've gotten
away without it on occasion, but it's lots more difficult. If the hole is
stripped then you don't need the drill since it's only slightly larger than
the screw major diameter. The tap is the expensive part though.
I'm thinking you'll need to drill out both the valve cover to clear the 8mm
bolt and the head to tap it to 8mm.
Unfortuneately, I'm on the east coast, so a little far from you, but see if
you can borrow the helicoil set from someone.
Dan

----- Original Message -----
From: "Jeff Toomasson" <jtoomasson@yahoo.com>
To: "Dan Bubb" <jdbubb@ix.netcom.com>; <scirocco-l@scirocco.org>
Sent: Tuesday, June 17, 2003 10:48 AM
Subject: Re: what impact could loose 16v center valve cover bolts cause?


> Thanks, Dan (and others too!)
>
> Do I need the whole helicoil kit to perform this? Or can I just tap the
> whole with a normal tap setup and then just add the insert?
>
> Most likely, I will just tap the hole for an 8mm bolt. But it's been a
long
> time (> 10yrs) since I've used either a helicoil or a tap - the last time
> being to repair an oil pan drain plug that I got over-zealous on. Would I
> have to drill out the hole to go up to the 8mm tap? Better yet, does the
tap
> and die set come with instructions?  Last thing I want to do is f*ck up my
> cylinder head...  :)
>
> Thanks again!  Jeff
> ----- Original Message -----
> From: "Dan Bubb" <jdbubb@ix.netcom.com>
> To: "Jeff Toomasson" <jtoomasson@yahoo.com>; <scirocco-l@scirocco.org>
> Sent: Tuesday, June 17, 2003 4:24 AM
> Subject: Re: what impact could loose 16v center valve cover bolts cause?
>
>
> > I was hoping that McMaster Carr would have these lots cheaper, but they
> > don't! They do have individual inserts available in all sorts of lengths
> for
> > cheap though.
> > OTOH, I've used my 8mm and 6mm helicoil kits more times than I can
count.
> > It's not a bad investment.
> > just my .02
> > Dan
> >
> > ----- Original Message -----
> > From: "Jeff Toomasson" <jtoomasson@yahoo.com>
> > To: <scirocco-l@scirocco.org>
> > Sent: Monday, June 16, 2003 3:24 PM
> > Subject: what impact could loose 16v center valve cover bolts cause?
> >
> >
> > I just went to OSH yesterday for the M6x1 Heli-Coil --   $35 f*cking
> > dollars!!!!!   (please use vaseline next time!!)
> >
> > Both of my center valve cover bolts on 16v head are stripped, what could
> > potentially happen if I leave this alone? Does anyone know if I could
just
> > tap it with one size larger?
> >
> > Thx, JT
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> >
>
>
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