4J engine tech - and a crazy idea!

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Originally Posted by DRanged

Why do you guys believe an intercooler of any position on an Isuzu in a Land Rover makes a huge difference at low speed. Off road or low speed it's Torque doing the work.

I would worry about it in say a drift car etc. Not a fruit truck with a transfer case .

Justin

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And if you drop your incoming air temp, increasing air density you can dump more fuel in and get more torque.

Ever driven a non intercooled TD engine in high ambients and at low speeds ?
They suck.

There's one short little pinch over the railway line here, yep a short little uphill bridge, and the Patrol just dies in the arse and almost stalls out on a hot day, I have to go back to first gear unladen. (and its still a struggle)
The Defender with an asthmatic 300Tdi and too high gearing in the R380 clears it in second gear in the same conditions, yet generally the TD42T creams it in off idle torque thanks to its larger swept volume.

fro those interested, I got this reply from an alibaba supplier of 4JB1T supplier,
in short; belt drive...:(

There is only one I've found from china that is gear driven and the cheapest i've found that is $2600 (http://www.wholesalecarparts.com.au/). The other supplier is charging $3500 (http://www.japparts.com.au/products/engines.html.) with a 20K warranty. Not sure if they are the same engine, but apparently there is only one factory in northern china building the gear driven version correctly.


Attachment 56855


"For diesel engine 4JB1T, it is with belt, not gear driving timing.

The engine price and detail is as below for your checking.

4JB1T engine price: FOB China US$3050/UNIT
Ocean freight from China to Fremantle port, Australia: US$80/unit.

Remark:
1. Quality one year warranty.
2. Engine is brand new.
3. Made in China.
4. Delivery time: about 18days.
5. Attached pictures for your checking.
6. Engine specification is as below for your checking.


Technical Parameter 4JB1T
Type In-line,vertical, water cooling, 4-stroke,diesel oil
Aspiration Style Turbocharged
Cylinder Number 4
Cylinder Diameter（mm） × Piston Stroke （mm） 93 ´ 102
Total Displacement (L) 2.771
Firing Order 1－3－4－2
Compression Ratio 18.2 ：1
Rated Power/Speed （kW/ r/min） 68/3600
Maximal Torque/Speed（N.m/ r/min） 202/≤2300
Idle Speed （r/min） 750±40
Minimum Fuel Consumption （g/kW.h） ≤225
Net Weight（kg） 241
Overall Size（mm） 775×635×702
Emission Level EURO Ⅱ
matched vehicle light buses, pickup trucks, SUV


Waiting for your comments with reply. Thanks a lot.


Best Regards,

Ella Zhuo
SHENZHEN UP POWER TECHNOLOGY CO.,LTD.
Tel: 0086-755-33694858
Fax: 0086-755-33694856
Cell phone: 0086-13924647272
Skype: ellazhuo
Email : uppower.sales2@gmail.com
Website: Shenzhen Up Power Technology Co., Ltd. - Diesel Engine&Parts
up-power "

this one is apparently gear driven, and made under licence from Isuzu;

Attachment 56894

didn't get the price yet, but interesting info on the Isuzu connection -even the Isuzu branding is being used.

COLLECTING SOME THREADS , carry on...

Engine Conversion Kits For Land Rovers, Range Rovers & Toyota MK Models - Land Rover Engine Conversion Kits

Thinking ISUZU 2.8 Turbo into Landy - Defender Forum - LR4x4 - The Land Rover Forum

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Originally Posted by isuzurover

The 4JB1T was fitted to rodeos and jackaroos. 2.8L DI.

This was superseded by the 3.1L 4JG2T. 3.1L IDI.
There is a marine/industrial 4JG1T - the same engine, except DI.

Although the 4JG1T is an uncommon beast, the 4JB1T is quite common here, and apparently the head from a 4JB1T will bolt straight onto a 4JG2T.

The 4JG2T is 20.5:1 compression, the 4JG1T is 18.1:1. It seems the main difference is the pistons:
http://www.partstw.com/images/isuzu/isuzu_4jg2.gif

I suspect this drawing is incorrect as these don't look like DI pistons... (possibly 4JG2T pistons, and the previous are 4JG2 (NA))
http://www.partstw.com/images/isuzu/isuzu_4jg1.gif

So, assuming the 2.8 head does indeed bolt straight on, can anyone see any problem with turning a 4JG2 into a DI engine by fitting 4JG1 pistons and a 4JB1 head and injectors???

Does anyone know of a 4BD2 which has been converted to a 4BD1 by changing the head and pistons?

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I know this is an old thread, but I feel I can add some more to the topic.
The 4JG2/G1 hybrid has been done, but with some limited success. The JB1, JH1 injection pattern doesn’t sit well with the 4JG1 piston bowl design. In reality the extra CC displacement of the 4JG1 isn’t such a big deal. IMHO the smaller 2.8 4JB1 and 3.0 4JH1 are a perfect engine alternative for a series or defender. The 2.8 4JB1 is caped of much more than factory power levels reliably and has the mechanical VE pump with plenty of upgrade options. The 3.0 4JH1 is a little for refined, with a quieter timing gear set and is also reasonably common but it’s major issue is the VP44 injection pump, while it can be remapped for pretty good power gains it has a pretty bad reputation for reliability. In the Rodeo community it’s become pretty common practice to mechanical pump swap them (this is something I’ve had a fair bit to do with, developing adaptor kits to suit). Having driven 4BB1, 4BD1, 4BD1T and 4JB1 I would pick the 2.8 for drivability, and performance any day of the week. I had a 4BD1T that was going into my series 3 but I’ve decided the 4JB1 suits better, being lighter, more usable rev range, and capable of the same power or more.

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Originally Posted by paulthepilot_5

I know this is an old thread, but I feel I can add some more to the topic.
The 4JG2/G1 hybrid has been done, but with some limited success. The JB1, JH1 injection pattern doesn’t sit well with the 4JG1 piston bowl design. In reality the extra CC displacement of the 4JG1 isn’t such a big deal. IMHO the smaller 2.8 4JB1 and 3.0 4JH1 are a perfect engine alternative for a series or defender. The 2.8 4JB1 is caped of much more than factory power levels reliably and has the mechanical VE pump with plenty of upgrade options. The 3.0 4JH1 is a little for refined, with a quieter timing gear set and is also reasonably common but it’s major issue is the VP44 injection pump, while it can be remapped for pretty good power gains it has a pretty bad reputation for reliability. In the Rodeo community it’s become pretty common practice to mechanical pump swap them (this is something I’ve had a fair bit to do with, developing adaptor kits to suit). Having driven 4BB1, 4BD1, 4BD1T and 4JB1 I would pick the 2.8 for drivability, and performance any day of the week. I had a 4BD1T that was going into my series 3 but I’ve decided the 4JB1 suits better, being lighter, more usable rev range, and capable of the same power or more.

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I'm just finishing a build with a 4JH1-TC in to a series 2A FC landy. With a 4JB1 injector pump (with timing gears, injectors & plumbing) swapped on to it.
So you're Paul Thompson in the FB world! Haha, small world isn't it. We've conversed re my project on your FB pages.

Chris

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Originally Posted by cjc_td5

I'm just finishing a build with a 4JH1-TC in to a series 2A FC landy. With a 4JB1 injector pump (with timing gears, injectors & plumbing) swapped on to it.
So you're Paul Thompson in the FB world! Haha, small world isn't it. We've conversed re my project on your FB pages.

Chris

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Ha ha, yes it is a small world, I was expecting a few familiar people to show up here. There are a couple of 4JB1/4JH1 landys getting around on the other Isuzu groups too.

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Originally Posted by paulthepilot_5

Ha ha, yes it is a small world, I was expecting a few familiar people to show up here. There are a couple of 4JB1/4JH1 landys getting around on the other Isuzu groups too.

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Hi Paul.
Do you know if the other Isuzus in series landys tend to use the landy box, or do they transplant the Rodeo gearbox and transfer case with the engine? I think Mark Garrett in Nowra used the whole drivetrain in his S3? I've got a mate locally looking to replace a very old (CA?) Isuzu in his 2A bloodbox, and he's looking for a 4JB1 for it. Would the bellhousing bolt patterns be the same???
Cheers, Chris

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Originally Posted by cjc_td5

Hi Paul.
Do you know if the other Isuzus in series landys tend to use the landy box, or do they transplant the Rodeo gearbox and transfer case with the engine? I think Mark Garrett in Nowra used the whole drivetrain in his S3? I've got a mate locally looking to replace a very old (CA?) Isuzu in his 2A bloodbox, and he's looking for a 4JB1 for it. Would the bellhousing bolt patterns be the same???
Cheers, Chris

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There is at leas one with Rodeo box and transfer from memory.

(CA)?, do you mean C240, C220 etc?

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Originally Posted by paulthepilot_5

There is at leas one with Rodeo box and transfer from memory.

(CA)?, do you mean C240, C220 etc?

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Yeah must be C240 etc. I haven't eyeballed it closely.
All I know is that it is damn noisy and slow.