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From: Jason James on 3 Apr 2007 12:25

<Hachiroku $B%O%A%m%/ (B <Trueno(a)AE86.gts>)> wrote in message
news:AArQh.4965$hI4.4504(a)trndny08...
> On Mon, 02 Apr 2007 09:37:23 -0700, mrdarrett wrote:
>
> > Hi all,
> >
> > Over the weekend, I removed my throttle body, cleaned with throttle
plate
> > cleaner solvent, then proceeded to remove the idle air control (IAC)
valve
> > for cleaning and inspection.
> >
> > There are four brass Phillips screws holding the IAC valve to the
throttle
> > body. (Why, oh why, couldn't Toyota make them hex bolts?)
> >
> > Three of the them came out fairly easily. The fourth one, I stripped
> > badly, while trying to unscrew.
> >
> > Major panic set in. Do I now have to buy a new throttle body + IAC,
just
> > because I stripped a screw?
> >
> > After a call to AutoZone, asking what they recommend, they suggested 1)
> > using a screw remover (some sort of weird bit), 2) drilling it out
(which
> > I had tried, unsuccessfully) and 3) using a Dremel tool to make a long
> > slot for a regular screwdriver to fit into.
> >
> > I went for the Dremel method. Worked like a charm.
> >
> > Posting this here, just in case this is helpful to anyone.
> >
> > Michael
>
>
> Sure hope, if you plan on doing this again, you used some Anti-Seize on
> the screws when you replaced them!
>
> Aluminum oxide is juat as bad or worse than Iron oxide!

Aren't "cross-head" set-screws or bolts used in Japanese cars, posidrive
rather than phillips? I've noticed some folks including myself initially,
missed the distinction. A phillips driver will damage a posidrive screw and
vice versa?

Jason


From: HLS on 3 Apr 2007 12:58

<mrdarrett(a)gmail.com> wrote in message

Oh, that's a good idea. I just didn't tighten the nuts very
tightly.

I was actually hoping to find some hex nut bolts to replace them...
anyone have any idea what thread those phillips screws would be?

I have to go back in there eventually - there are two coolant hoses
going to the throttle body that I'd missed when changing out all the
coolant hoses.

Michael


As Jason has mentioned, they may not be Phillips. They could be
posidrive, and those two slotting patterns are not the same.

One thing you might want to buy at Harbor Freight...a thread gauge.
I have one in my tap and die kit,and they can be very valuable.


From: mrdarrett on 3 Apr 2007 17:24
On Apr 3, 9:25 am, "Jason James" <h...(a)work.1.0> wrote:
> <Hachiroku $B%O%A%m%/ (B <Tru...(a)AE86.gts>)> wrote in messagenews:AArQh..4965$hI4.4504(a)trndny08...
>
>
>
>
>
> > On Mon, 02 Apr 2007 09:37:23 -0700, mrdarrett wrote:
>
> > > Hi all,
>
> > > Over the weekend, I removed my throttle body, cleaned with throttle
> plate
> > > cleaner solvent, then proceeded to remove the idle air control (IAC)
> valve
> > > for cleaning and inspection.
>
> > > There are four brass Phillips screws holding the IAC valve to the
> throttle
> > > body. (Why, oh why, couldn't Toyota make them hex bolts?)
>
> > > Three of the them came out fairly easily. The fourth one, I stripped
> > > badly, while trying to unscrew.
>
> > > Major panic set in. Do I now have to buy a new throttle body + IAC,
> just
> > > because I stripped a screw?
>
> > > After a call to AutoZone, asking what they recommend, they suggested 1)
> > > using a screw remover (some sort of weird bit), 2) drilling it out
> (which
> > > I had tried, unsuccessfully) and 3) using a Dremel tool to make a long
> > > slot for a regular screwdriver to fit into.
>
> > > I went for the Dremel method. Worked like a charm.
>
> > > Posting this here, just in case this is helpful to anyone.
>
> > > Michael
>
> > Sure hope, if you plan on doing this again, you used some Anti-Seize on
> > the screws when you replaced them!
>
> > Aluminum oxide is juat as bad or worse than Iron oxide!
>
> Aren't "cross-head" set-screws or bolts used in Japanese cars, posidrive
> rather than phillips? I've noticed some folks including myself initially,
> missed the distinction. A phillips driver will damage a posidrive screw and
> vice versa?
>
> Jason- Hide quoted text -
>
> - Show quoted text -



Oh, neato
http://en.wikipedia.org/wiki/Pozidriv

Any suggestions where to find a Pozidriv screwdriver? (hint: Harbor
Freight doesn't seem to carry them.)

From: HLS on 3 Apr 2007 17:50

<mrdarrett(a)gmail.com> wrote in message
news:1175635446.591219.12520(a)y66g2000hsf.googlegroups.com...

Any suggestions where to find a Pozidriv screwdriver? (hint: Harbor
Freight doesn't seem to carry them.)

All hardware and tool stores (worthy of the name) have them.
They look just like Phillips. But there is a difference in the finer
dimensions.

If I remember correctly, Posidrive was developed to allow better
control when using power drives. The geometries were a bit
different from Phillips. (Any here please correct me on the
chronology).

Even with Phillips, the precision of the bit, the hardness (preventing
deformation of the bit), etc will vary a lot between cheapo drivers
and precison quality drivers.




From: Jason James on 3 Apr 2007 18:55

<HLS(a)nospam.nix> wrote in message
news:X_zQh.4658$YL5.2116(a)newssvr29.news.prodigy.net...
>
> <mrdarrett(a)gmail.com> wrote in message
> news:1175635446.591219.12520(a)y66g2000hsf.googlegroups.com...
>
> Any suggestions where to find a Pozidriv screwdriver? (hint: Harbor
> Freight doesn't seem to carry them.)
>
> All hardware and tool stores (worthy of the name) have them.
> They look just like Phillips. But there is a difference in the finer
> dimensions.
>
> If I remember correctly, Posidrive was developed to allow better
> control when using power drives. The geometries were a bit
> different from Phillips. (Any here please correct me on the
> chronology).
>
> Even with Phillips, the precision of the bit, the hardness (preventing
> deformation of the bit), etc will vary a lot between cheapo drivers
> and precison quality drivers.

In the electronics game, we come across both Philips and Pozidriv. There
seems to be less Philips these days.

If you dont have a Pozidriv screwdriver, its a toss-up whether you'll get
the screw out without chewing it out with a Philips. The Posidrive
screw-head doesnt go down to a point like the Philips, so often the correct
looking Philips bottoms and thus causes a chew-out. OTOH, a Posidriv
screwdriver will undo Philips screws most times without drama.

Jason


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