carby for toyota 3Y
Tim Paton
It's been rebuilt 3 times, fiddled with incessantly, and it still
hesitates/stalls when you put the foot down. Hesitates, as in the engine
dies for about a second then comes back to life. When it's cold, this
stalls it unless you give the pedal a few pumps (to squirt the fuel pump
and make some black smoke).
The autochoke sucks too. The choke body cools down if the car is
switched off for 5 minutes, so it runs full choke on the still-hot
engine until it warms up again. Needless to say, the car runs like a
bucket of shit in the meantime.
It's a good little truck, but this single component ruins it.
Gets me thinking, for the price of yet another attempt at fixing it (I
usually do such things myself, but this one has me beat), I could
probably pick up a decent carby. And if I'm going there, why not a
decent inlet manifold too? I don't know much about performance mods, but
it would be nice to get some torque below 2500rpm (although it spins at
about 3500 to do 100km/h, so we need some power there too).
The engine is a 2.0 Toyota 3Y (the oil cap has a Daihatsu badge on it,
so of course it's a Daihatsu engine ;-). It's the same engine as was in
early 2.0 Hiluxes, Taragos and most other mid 80's light commercial
Toyotas.
There were zillions of the Hiluxes made. Everyone knew they were
underpowered from the start, so there must have been some pretty
standard aftermarket fix-ups done to them. There's plenty of room in the
engine bay for stuff (a 3.8L V6 comes to mind, but lets not go
there...). Does anyone know, or even better have kicking around, a carby
that would suit this engine?
T...t....t.t.......Tim
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Before you buy.
Norbie
Tim Paton <timp...@my-deja.com> wrote in message
news:81d40a$4jo$1...@nnrp1.deja.com...
> There were zillions of the Hiluxes made. Everyone knew they were
> underpowered from the start, so there must have been some pretty
> standard aftermarket fix-ups done to them. There's plenty of room in the
> engine bay for stuff (a 3.8L V6 comes to mind, but lets not go
> there...). Does anyone know, or even better have kicking around, a carby
> that would suit this engine?
These engines came with complex emissions-era carbs that were notorious for
playing up. Have you considered switching to EFI from a 2.2 litre Tarago
(4Y-E engine)? A bit more stuffing around but the results would be well
worth it.
Apart from that, I seem to recall that the Y series engines were based on
the old R series engines of the 70's (used in older Hilux's, Coronas,
Celicas, you name it), so there's a good chance that a simple common-as-muck
18R carby will fit on a 3Y manifold. Worth a try anyway.
--
Norbie! -=DUH#19=- (Y3)
"Oh my god - they flamed Kenny!"
David
my toyota corona 18r-c carby.
simple explanation? accelerator pump is not working properly.
maybe these cars share the same crappy carby?
If I can offer help it would be the following that I did to my car.
I replaced the accelerator pump plunger with a carby repair kit from repco.
while the old plunger looked completley ok, the rubber seal was deceptivley
hard and totally shot.
to check this, take off your air cleaner and with the engine running, pulll
the throttle quickly. You should see the main jet continue to squirt fuel
plus and additional brief burst from another opening on the side of the
throat just above the venturi. if there is no brief burst from this
accelerator pump then then that is why your engine nearly stalls as the
engine briefly leans out when you push the go pedal quickly.
I also more or less wound the choke back so that it didnt really apply much
of a choking effect
the difference? with a working accelerator pump, the engine no longer leans
out when you put your foot down, hence no hesitation and no nearly engine
dying and then coming back to life.
with the choke largeley not working, the car never ever has hot start
problems anymore, the trade off is that it needs you to apply a mild bit of
accelerator on cold mornings for about a minute or so to keep it approx 1100
rpm.
bear in mind this is much easier with a working accelerator pump.
hope this helps.
dave
Tim Paton wrote in message <81d40a$4jo$1...@nnrp1.deja.com>...
>The (stock, can't remember whose) carb in my '86 Daihatsu Rocky sucks.
>It's been rebuilt 3 times, fiddled with incessantly, and it still
>hesitates/stalls when you put the foot down. Hesitates, as in the engine
>dies for about a second then comes back to life. When it's cold, this
>stalls it unless you give the pedal a few pumps (to squirt the fuel pump
>and make some black smoke).
>
>The autochoke sucks too. The choke body cools down if the car is
>switched off for 5 minutes, so it runs full choke on the still-hot
>engine until it warms up again. Needless to say, the car runs like a
>bucket of shit in the meantime.
>
>It's a good little truck, but this single component ruins it.
>
>Gets me thinking, for the price of yet another attempt at fixing it (I
>usually do such things myself, but this one has me beat), I could
>probably pick up a decent carby. And if I'm going there, why not a
>decent inlet manifold too? I don't know much about performance mods, but
>it would be nice to get some torque below 2500rpm (although it spins at
>about 3500 to do 100km/h, so we need some power there too).
>
>The engine is a 2.0 Toyota 3Y (the oil cap has a Daihatsu badge on it,
>so of course it's a Daihatsu engine ;-). It's the same engine as was in
>early 2.0 Hiluxes, Taragos and most other mid 80's light commercial
>Toyotas.
>
>There were zillions of the Hiluxes made. Everyone knew they were
>underpowered from the start, so there must have been some pretty
>standard aftermarket fix-ups done to them. There's plenty of room in the
>engine bay for stuff (a 3.8L V6 comes to mind, but lets not go
>there...). Does anyone know, or even better have kicking around, a carby
>that would suit this engine?
>
TimPaton
> a carby
> > that would suit this engine?
> notorious for
> playing up. Have you considered switching to EFI from a 2.2 litre
> Tarago
> (4Y-E engine)?
How big an operation would that be? Would it be a matter of unbolting
the intake manifold, throwing it and the carb (and lots of
anti-polution stuff) in the scrap bin; bolting on the EFI manifold,
ports, throttle body etc., connecting 12V, a fuel line and a throttle
cable, and driving away?
Is it reasonable to assume that the 3Y and the 4Y-E heads have the same
bolt pattern anyway?
I've never owned or worked on an EFI engine, and I'm not really sure
what's involved.
> Apart from that, I seem to recall that the Y series engines were
> based on
> the old R series engines...so there's a good chance that a simple
> common-as-muck
> 18R carby will fit on a 3Y manifold. Worth a try anyway.
Would probably be quite illegal though, to basically cripple all the
anti-polution stuff. I don't know how long I will own this car, and it
would suck to have it knocked back on the roadworthy when I go to sell
it...
Does anyone know what "all the anti-polution stuff" does anyway? Norbie
was correct in that my engine bay is a horrible mess of little vaccuum
hoses, valves, charcoal canisters...I have a basic idea what PCV is all
about, but the rest of it...
If I knew what it all did, I might have a hope in hell of fixing it.
Has somebody seen this stuff up on a website somewhere?
tim paton
aka timp...@my-deja.com when it is working (grumble)
emails -> tim (a) paton . net
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Norbie
TimPaton <patontN...@ocean.com.au.invalid> wrote in message
news:000b8d9b...@usw-ex0102-010.remarq.com...
> > >Does anyone know, or even better have kicking around,
> > a carby
> > > that would suit this engine?
> > These engines came with complex emissions-era carbs that were
> > notorious for
> > playing up. Have you considered switching to EFI from a 2.2 litre
> > Tarago
> > (4Y-E engine)?
>
> How big an operation would that be? Would it be a matter of unbolting
> the intake manifold, throwing it and the carb (and lots of
> anti-polution stuff) in the scrap bin; bolting on the EFI manifold,
> ports, throttle body etc., connecting 12V, a fuel line and a throttle
> cable, and driving away?
Yep, you covered most of it there, apart from the high-pressure fuel pump
(easy to acquire from a wrecked Tarago). You'd have to ensure you have the
entire EFI system from the donor vehicle though, including the wiring
harness. Often the EFI system integrates with the rest of the electrical
system so you can have a few headaches getting it all to behave properly,
but if you have the Toyota workshop manual there's no reason why you
couldn't figure it out. Hell, I did it without the benefit of a workshop
manual, although that was with a fairly simple EFI system (not sure how
complex the 4Y-E is though).
> Is it reasonable to assume that the 3Y and the 4Y-E heads have the same
> bolt pattern anyway?
I'd be very surprised if they were different at all.
> I've never owned or worked on an EFI engine, and I'm not really sure
> what's involved.
It's not rocket science, but if you've never done it before you'll
definitely want the relevant Toyota workshop manuals on hand. They're
pretty easy to come by though.
> > Apart from that, I seem to recall that the Y series engines were
> > based on
> > the old R series engines...so there's a good chance that a simple
> > common-as-muck
> > 18R carby will fit on a 3Y manifold. Worth a try anyway.
>
> Would probably be quite illegal though, to basically cripple all the
> anti-polution stuff. I don't know how long I will own this car, and it
> would suck to have it knocked back on the roadworthy when I go to sell
> it...
True, although I'd be surprised if anyone noticed.
> Does anyone know what "all the anti-polution stuff" does anyway? Norbie
> was correct in that my engine bay is a horrible mess of little vaccuum
> hoses, valves, charcoal canisters...I have a basic idea what PCV is all
> about, but the rest of it...
> If I knew what it all did, I might have a hope in hell of fixing it.
> Has somebody seen this stuff up on a website somewhere?
Get the workshop manual, that's the only way you'll figure it out. I tried
to get all the pollution gear operational on my late-70's 18R-GU (which is
not as complex as your 3Y) and gave up after a couple of weeks of tinkering.
In the end I ripped it all off and replaced it with the (much simpler)
factory EFI. :-)
Sean
Also check for ignition arcing and condenser failure
David <drhilder(nospamjunk)@hotmail.com> wrote in message
news:81hqmj$1k...@xlprod01.westpac.com.au...
> >there...). Does anyone know, or even better have kicking around, a carby
> >that would suit this engine?
> >
govende...@gmail.com
Daryl
> Hi having problems with my 3y engine which has a 4y cylinder head with a fong Chong carb. The carb is new it just overfloods the cylinder and petrol stands in the inlet manifold up to 3.5mm high
>
connects to the carby, you will need to find it and make sure its not
sticking open.
--
Daryl
Clocky
> Hi having problems with my 3y engine which has a 4y cylinder head with a fong Chong carb. The carb is new it just overfloods the cylinder and petrol stands in the inlet manifold up to 3.5mm high
>
that when it's level the needle is shutting off the fuel inlet into bowl?