Factory 1HZT

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Well, a 12-H designation doesn't make much sense, numbers-wise. Toyota adds the 1- prefix to an engine designation when they fitted a turbo on (along with the changes that come with the addition), so I would be puzzled if they ever designated a '12H' engine. I mean, that would mean, I guess, a 2H with crankcase stiffener plate, piston skirt cooling, direct injection, and reduced-compression pistons. What would be the point of those changes without any increase in horsepower?
 
I think there is something as a 12H in forklifts, the 1 infront designates direct injection as above.

ie 3B - indirect injection
13B - direct injection
13BT- direction injection turbo
15BFT - multivalve direction injection turbo
15BFTE - multivalve electronic direction injection turbo
 
troopie said:
i just ordered one sticker to check if it's the right one here too.

It would be easiest if i send a bunch of stickers over to one person in the US and that person could ship them out stateside.

I'll wait until the sticker i ordered is here and see if someone stateside steps up to make this happen.

Mark
Click to expand...

I'm waiting on the results of your test, but I'll probably be in for a couple...

And very good idea on sending them to one spot in the US, followed by that person distributing them here. Anyone up to volunteer for that?

Really Onur, no good? I am disappoint...

As to the question about the "1" indicating direct injection, that convention seems to have ended when the H series was supplanted by the 1HZ and 1HD-T, at which point the Z seems to indicate indirect injection, and the D direct injection (1HZ vs 1HD-T, 1KZ vs 1KD).

Dan
 
DanS HJ-45 said:
I'm waiting on the results of your test, but I'll probably be in for a couple...

And very good idea on sending them to one spot in the US, followed by that person distributing them here. Anyone up to volunteer for that?

Really Onur, no good? I am disappoint...

As to the question about the "1" indicating direct injection, that convention seems to have ended when the H series was supplanted by the 1HZ and 1HD-T, at which point the Z seems to indicate indirect injection, and the D direct injection (1HZ vs 1HD-T, 1KZ vs 1KD).

Dan
Click to expand...

The ETA for the test sticker is on the 22nd of november. So plenty of time to think about it.
I've been in contact with Volcano Cruiser. He will probably step up as distributer within the US.

I'll update here once i get the first sticker in.

Mark
 
Henry James the 47th said:
Well, a 12-H designation doesn't make much sense, numbers-wise. Toyota adds the 1- prefix to an engine designation when they fitted a turbo on (along with the changes that come with the addition), so I would be puzzled if they ever designated a '12H' engine. I mean, that would mean, I guess, a 2H with crankcase stiffener plate, piston skirt cooling, direct injection, and reduced-compression pistons. What would be the point of those changes without any increase in horsepower?
Click to expand...

I figured there's a 13B, why not a 12H as a hypothetical engine.
I just said it would be cool. ;)
 
I always thought Toyota made a lot of rules with their number and letter designation and then continuously broke them. Personally I stopped paying much attention to the numbers and letters and what they meant a long time ago but instead just looked at the specs enough I could memorize them.

Now back on track. What's the latest with the 1HZ-T?
 
The number is always the generation of the engine. The next letter or 2 letters is the engine family designation. Then usually a dash. Everything after the dash are things like turbo/supercharged/EFI etc.

So, a 1HZ is the first generation of the HZ family of engines.

So, a 1FZ-FE is the first generation of the FZ family of engines with the -FE meaning: F=narrow intake runners, E=EFI.

All Toyota engines are named in this manner with a very, very few exceptions.
 
Douglas S said:
I thought the 1HZ was IDI? Not sure...
Click to expand...

It is.
Toyota's naming conventions only really stay consistent within an engine family.
Like the 1H family. Z is indirect injection, D is direct injection, F is four valves per cylinder, T is turbo, E is electronic injection.
The 1K family obeys the same rules but also have a V for variable vane turbo.

In the B series a 1 in front means direct injection, but they also use the F, T and E like the 1H's do.

In the L series they were all idi, so the variations are model progression (2, 3, 5 etc) and the T and E versions.

In toyota's smaller petrol engines F is the fuel economy version and G is the go-go version. Like the 4AFE (economical version) and 4AGE (rice rocket). I had a corolla once with a 5EFE, it was the slowest vehicle I ever owned, took over 25 seconds to reach 100km/h.
 
I asked my parts dealer about the 1hz-t today and showed him the pic of the part number and sticker ,and he said yea sure they come in the hzb50 coaster bus 93-96.
 
I picked up the test sticker yesterday at the dealer and it really is a 1hz-t sticker. The cost was 2.40 euro's.
I can order plenty more and send those over to the US.

Mark
 
wongtsenhin said:
If this is the Toyota genuine sticker with part no, shouldn't be problem ordering at your local Toyota.:hhmm:
Click to expand...

Not at the US dealerships. That was the whole point of me ordering one to see if i could get it.
 
Clint79 said:
I asked my parts dealer about the 1hz-t today and showed him the pic of the part number and sticker ,and he said yea sure they come in the hzb50 coaster bus 93-96.
Click to expand...

Lots of pics of part numbers and stickers, but no engine plate or engine pics.
Scarboro toyota told me there was no such animal.

When you click the turbo diesel box or the 1HZ T box here,on the far right for the HZB50,it says "no records found".
http://www.toyodiy.com/parts/q_G_1995_TOYOTA_COASTER_HZB50.html
 
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