1HZ-T vs 1HD-T ( IDI vs DI )

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Tapage

Tapage

Club 4X4 Panamá
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I have this question ..

Was talking with a couple of folks here ( all crazy Cruiserheads ) and we are in this issue .. I thought logical the 1HD-T it's a much more capable engine ..

We are taling about performance, not necesary long lasting .. you know .. not specting a million of km from this engine, but at least couple of undred of km ..

I thought due to the lower comp in the 1HD-T and the direct injection with a few mods it´s mucho more capable engine to handle much more boost ( apropiate intercooler ) and few tricks like a propane injection etc ..

Starting of course from 3" straight pipe ( short ) to start ..

Opinions . ?
 
Those are my thoughts too.
A direct injection head is far stronger and the higher efficiency means you should get more power for the same amount of fuel.

In the 100 series cruisers toyota showed just over 1km/l fuel economy penalty to the HZ over the HD.
Why didn't toyota didn't make a non turbo 1HD?

*edit*
Was it Pioneer who posted up a video of a drag race between an HD-T cruiser and an Isuzu pickup?
 
I have to agree on Direct Injection also:
1 no need for individual glo plugs ie; element heater much better
2 direct injection = instant starting unless it is a POS
3 most of the time on Toyota diesels 13B-T , 12H-T and 1HD-T you dont need to preheat unless it -10c
4 direct injection heads are stronger ie they are flat no precup chamber plus less compression (not talking about Toyota here look at the 6.2 chev 6.9 navistar , sorry guys I had a 5.9 cummins di a total different league.
5 strength ; look at the 13B or 13B-t versus the 3B head ( they crack) the DI cousins can take whatever you throw at it.
6 look at what the big 3 do, they use DI for the last 50 years, sorry big 3 means Cat , Cummins, and Detroit.
note I think the idi 1HZ is a great engine. also , I am not a web wheeler, I use my 13B-T in my 74 and I run the big 3 for work, I would not take advise about diesels from a chef, MOP. Aaron
 
Is not my intention start a war here about this topic ..

Just have one IDI and one DI Toyota diesel engine, both turbo, and I need to recognice ( compared aples with aples ) that 1HZ vs 1HD-T the second one seems to be much more fast and performance capable ..

Also I need to recognice that I drive my 2H IDI with cracket precups .. for a while, and the engine was running strong in all cases doing the job all the time ..

Other thing that come to my mind that are the DI engines les prone to temp head issues . ?

Are the 1KZ-T the exeption at the rule .. are seiusly powered .. but seems not be that stout as same as 3L was .. ( or is in many Hi Lux and Hi Ace around the world .. )
 
PradoT, how long have you owned the 13BT? i took one apart in Calgary and the head was cracked. i would say that we need a few more years and many more km before we make the statement you just did...
most of us Cruiserheads never knew about the cracking of the 3B heads till decades after their introduction to the Canadian market.

i will agree with the element heater being a good design...i like it although the individual glow plugs work well too in a non-super glow system.
 
I didn't remember where but I was reading about the precups ..

They ( in the web ) said something related to the economy and power performance capabilities in a IDI directly related to the size of the precup hole ..

And who knows ( links, pics, videos ) about the most boosted Toyota IDI engine . ?
 
To Crushers, I personally have had my 13B-T for 9 months and 52,000 kms got it with 123,000 and now have 175,000 Ya I do have that problem shooting my mouth off, Ya I dont know what is going on with the rest of the other cruisers besides the ones in the club and the ones that I see daily, I totally agree with more time and more kms to see what will happen,
before I had my prado, I had a grey market 74, still have it I practise tearing it down and putting it back , It amazes me that your customer had a cracked head, I am guessing that the egts went through the roof. Anything is posible, non Toyota story 6BT one with 808,000kms original clutch never used a drop of oil, with the Getrag 360 5 speed if you know the stories people were breaking them driving off the lot until they came with NVG 4500 or 5500 , any ways I personally know of alot of them needing rebuilds at 200,000 and have had 5 trannies since, so IMOP unless it is a 2lt alot of that stuff that happens depends on how it is operated. IMOP a gas motor is alot more forgiving than a diesel but a diesel if treated properly will last a long time. Sorry Cruiserheads for my own opinion. I appreciate all the advise I get from you guys. We just came back from a B.C. - Northern Alberta- NWT - Alberta-B.C.
 
buddy, i probably have the record for shooting off my mouth on Mud.

the 13BT i tore down had 314,000 km on it and the last 5000 was my test vehicle. i brought it in specificly to test the durability of the 13BT... it is very durable. the crap i put that truck through!!!!

it also taught me that a 13BT 5 speed is not the most desirable truck out there but very capable.

operator, yep, in my hands any engine can be pushed over it's limits.

this being said, and i agree with Dougal, the non-precup heads are probably more durable but till we have the HZ and the HDT in Canada for another decade or so we will not know for sure. i know i have tested the PZ and the HZ extensively and both have held up with to over fueling, over boosting, propane at unrecommended flow rates...so far.

i have seen 3Bs in need of rebuilding at 150,000 and others that go 700,000 before needing a rebuild. maintenence and user common sense can extend the life of the diesel engine.
 
Mind if a total newbie steps in here? :)

I was just thinking the last couple of days about the differences between 1hz and 1hd-ft, mainly inspired by the pics Crushers posted in the other thread - the 1HZ into a 40 series. Pretty sure you commented that the 1HZ was your top swap of choice into a 40 series, which had me wondering why not the hd-ft?

Educate me please. :)

Wait.. we're talking -T, not -FT. I'd properly edit this post, but Firefox on the Mac seems to hate forum posting and the editor is all jacked up. My PC is offline because I'm doing some final cut editing. Sorry for the confusion.
 
I don`t really make a huge diference between a HD-T y HD-FT coz the only diference are the DOHC 24V that make no really improvement if you ask me ..

But both engine share the same concept and the same bottom end ..

Actually the T and the FT share the same IP and the same broken pressure at the injector .. but a far ( more than 1,000 psi ) diference on borken pressure compared to FTE, totay diferent animal ..
 
bagh33ra said:
Mind if a total newbie steps in here? :)

I was just thinking the last couple of days about the differences between 1hz and 1hd-ft, mainly inspired by the pics Crushers posted in the other thread - the 1HZ into a 40 series. Pretty sure you commented that the 1HZ was your top swap of choice into a 40 series, which had me wondering why not the hd-ft?

Educate me please. :)

Wait.. we're talking -T, not -FT. I'd properly edit this post, but Firefox on the Mac seems to hate forum posting and the editor is all jacked up. My PC is offline because I'm doing some final cut editing. Sorry for the confusion.
Click to expand...

If you had a 1HZ with good compression and a 40 with the weight kept to a bare minimum,you would have a very driveable/economical 40 series with really low maintenance costs.
Of course you could add a turbo and it would really fly.
The 1HD T is probably in demand more and thus more expensive to obtain,but it would still be an ideal swap
 
crushers said:
buddy, i probably have the record for shooting off my mouth on Mud.
Click to expand...
I disagree, you're far from that, just check out Chat and see for yourself some of the nastiest bull**** anywhere that actually passes for entertainment simply because it's so well packaged by its veneer of sophistication.
 
bagh33ra said:
Mind if a total newbie steps in here? :)

I was just thinking the last couple of days about the differences between 1hz and 1hd-ft, mainly inspired by the pics Crushers posted in the other thread - the 1HZ into a 40 series. Pretty sure you commented that the 1HZ was your top swap of choice into a 40 series, which had me wondering why not the hd-ft?

Educate me please. :)

Wait.. we're talking -T, not -FT. I'd properly edit this post, but Firefox on the Mac seems to hate forum posting and the editor is all jacked up. My PC is offline because I'm doing some final cut editing. Sorry for the confusion.
Click to expand...

A 1HD-FT in a 40 would be close to extreme silliness.
A lot of fun, but can you really use that much power in a part time 4wd of that weight?
 
Dougal said:
A 1HD-FT in a 40 would be close to extreme silliness.
A lot of fun, but can you really use that much power in a part time 4wd of that weight?
Click to expand...

Funny that you mention that, At our Cruiser club show and shine last year there was a 40 series with a 6BT cummins about the same hp but around 150ft/lbs more torque than a 1HD-T with a NVG 4500 behind it, wow!
 
prado t said:
Funny that you mention that, At our Cruiser club show and shine last year there was a 40 series with a 6BT cummins about the same hp but around 150ft/lbs more torque than a 1HD-T with a NVG 4500 behind it, wow!
Click to expand...

Burnout machine?:D
 
Dougal said:
A 1HD-FT in a 40 would be close to extreme silliness.
A lot of fun, but can you really use that much power in a part time 4wd of that weight?
Click to expand...

Yes ,you could use it mainly on the freeway, but it would also be good on the beach.
No different to having a small block in there
 
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