Terry,
Ah this would explain why I had to rotate my speedo drive (trunion?) 90
deg and cut a new hold down groove ( the 10mm bolt !!) so that the gears
would mesh. Obviosly the box had the bigger toothed drive. ( I never got
the original drive) Do you know what I'm saying Terry? Does this sound
right? If so will the pink gear be a goer?
Thanks for all your help, always Terry.
Regards,
Pete.
----------
> From: Terry & Heather <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: Re: Fuel pressure & bloody speedo drives
> Date: Monday, 20 March 2000 22:20
>
> Pete,
> The pump I have to go in the 510 is off a Cressida Twin Cam ~86, and it's
the
> same as our 86 Crown Royal. The part number is 56200-0341. I'm told that
Mazdas
> also have a similar pump in size and function and it could be the same
pump as
> Denso electrics are common in them as well. It's like most things I guess
as
> for as size goes getting smaller all the time, I like it for the size and
ease
> of installation.
>
> On speedo drives, what a can of worms (no pun intended) those things are,
there
> are so many combinations of the drive teeth, diameter of external drive
and the
> number of worms and size of worm as well. The external drives are much
the same
> from 16-19 teeth for each of the internal worms except the length of the
> trunion and the spindle is different for a 5x or 6x worm. At 20 teeth or
above
> the diameter of the external toothed drive is bigger and the internal
worm
> drive is smaller and they are NOT interchangeable. If your original drive
was
> 19 teeth or under, then a 22 tooth is going to need a worm drive change
is what
> i'm saying and it's a bugga of a job, is it worth it. This is what i was
faced
> with for the FJ box when i changed to a 3.9 diff ratio which requires a
20
> tooth drive and the original drive in mine is 19 teeth. After borrowing
drives
> and looking at parts books it all got tooooo hard and to say that i was
pissed
> off with it is an understatement, so i shoved the standard drive back in
and
> decided the next best thing was to look up a mate who is an instrument
tech as
> he used to do speedos for police cars. He did my speedo gratis but he
said it
> is worth ~$60 for a primitive 1024 speedo, the down side of doing it this
way
> is the odo is not touched but as mine would only be out by around 5% at
that
> stage i couldn't have cared less if the bloody didn't work at all. In
hindsight
> I can see why it's rare to get the speedo corrected, it should have been
easy
> but evidently not always.
>
> I reckon you can do minor changes to a 1024 speedo yourself. All they do
is to
> adjust the pre-tension on the hairspring, it works best is the speedo is
> reading high as the hairspring doesn't like being given less tension
after 30
> years of zeroing to a specific point. The way they adjust them is
interesting
> to watch, they have a corrected speedo attached to a variable speed
electric
> motor, just hook your speedo up to the second cable and adjust it. They
adjust
> road speedos to read +3-4% to allow for dead accurate speed indicated
with new
> tyres on and the speedo gradually reads faster as the tyres wear.
>
> regards
> terry
>
> Peter and Trace wrote:
>
> > Terry,
> > Thanks, sound like what I'm after. What model Toyotas? EFI
Camry,
> > Corrolla??
> > Thanks,
> > Pete.
> > Also did you say you could get the 22 tooth pinks speedo drive?
> >
> > ----------
> > > From: Terry & Heather <[EMAIL PROTECTED]>
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Fuel pressure.
> > > Date: Sunday, 19 March 2000 13:45
> > >
> > > Pete,
> > > If you don't mind another make in your datto then a Nippondenso
pre-pump
> > from
> > > any of the Toy EFI cars has got ot be a good thing, they are so tiny,
> > very
> > > quiet, ultra reliable and you can plumb it in so easily as all up
it's
> > about 1/2
> > > the size of a ciggy packet. They are at the wreckers everywhere and
cost
> > around
> > > $25. I used a 260C pump for years until it died but the bracket &
filter
> > etc. is
> > > huge & mega ugly.
> > >
> > > terry
> > >
> > >
> > > >
> > > > From: Peter and Trace <[EMAIL PROTECTED]>
> > > > To: Ozdat <[EMAIL PROTECTED]>
> > > > Date: Friday, March 17, 2000 6:30 AM
> > > > Subject: Fuel pressure.
> > > >
> > > > >Hi all,
> > > > > I have had a prob of engine dying going around left hand corners.
> > > > >Installed a fuel pressure guage yesterday and its proved a fuel
> > pressure
> > > > >problem. I have a gravity fed surge tank underneath the car but
> > obviously
> > > > >need a HVLP pre pump. What is the best/cheapest pump to use?
(need
> > to fix
> > > > >before race day) Does anyone in Brisbane have anything I my be
able
> > to use
> > > > >or recomend?
> > > > > Thanks,
> > > > > Pete.
> > > > >
> > > > >
> > > >
> > >
> >
>
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