I’m looking forward to hearing how the HE221 goes. I was looking a using that turbo with a T25 Isuzu high mount manifold.
Here is information about the turbo conversion on my perentie, I spent a lot of time researching, so I'd like to contribute with something back that might help others.
At the end of the day, doing this bit by bit was very time consuming and sometimes a little challenging for me. (a DIY land rover pretend mechanic with no actual training in this sort of thing.)
The teams of engineers at isuzu did everything for a reason, be it cost or otherwise, each minor difference between the 4BD1 and 4BD1T begs the question why did they do it differently like that?
Am I pushing this motor too hard now? Will this cause me more grief later on? Have I put enough thought into my custom parts to achieve reliability? I'm not a mechanical engineer!
I chose to do this all myself instead of buying a turbo kit from KLR because I wanted a project. I also read and heard good things about the HE221W matched to this motor.
If you do not have 4 months of partial weekends and week nights, I suggest you buy the KLR kit and save the extra time and effort. You also have comfort in knowing they supply a genuine garret turbo. I'm taking a gamble with this holset from china.
Hopefully this post helps you get an idea about the work involved!
Below the photos is a mostly comprehensive parts/cost list.
full_enginebay.jpg
- original heater and vacuum pipes survive with minor "adjusting"
- easy 1 pice hose from donald to turbo
- air cleaner was turned around, I blanked the old intake and drilled out the old drain to be the new intake.
- exhaust is the next job... (2.5")
- egt pre turbo (in the side of the T3 manifold flange) because I haven't done that before, also this gives me a reading to hopefully not let things get out of hand...
driver_side.jpg
- I join the rocker breather to the crankcase breather.
- I also swapped to the twin filter setup, that was an episode of it's own, I don't think it was necessary, but it will make oil changes a lot easier. If you don't do that you should take more care to route the crossover pipe away from the large upside-down filter. (or fit a front mount inter cooler)
- I chose no inter cooler because I am trying to keep it simple.
turbo.jpg
- Turbo is a holset he221w with 5.5cm exhaust housing and T25 flange.
- oem 4BD1T exhaust manifold
- I used an adapter from MTQ to go T3 to T25.
- 3" compressor intake, v-band outlet elbow to 2.5" hose compressor outlet.
- I had to take the compressor and exhaust housings off and remove the dowels to "clock" the core in the housings.
- from this angle you can see the vacuum hard pipe underneath the brackets for heater pipes.
crossover_pipe.jpg
- I fabricated the crossover pipe from aluminum, I used ally because I don't have to worry about rust (yay)
- I welded brackets to the air cleaner mount and using 2.5" exhaust clamps to hold the pipe to it.
- There is a ~10mm gap between the turbo outlet and the crossover pipe where I fit a silicon joiner to allow for any movement.
oil_drain.jpg
- My overly complex oil drain.
- I wanted what I think is a "factory" solution, I have rubber hose and clamps on my other landy and it leaks.
- Holset specify a minimum ID for the oil drain to be 14mm, the smallest performance hose I found suitable is AN-12 which is rather large on the outside.
- Isuzu use an all steel pipe with a corrugated section for a small amount of flex. I couldn't find that type of tube to make one.
- This is somewhat similar to a 200tdi oil drain in the flex and types of fittings used.
- each end fitting made custom.
breather.jpg
- crankcase breather similar to KLR setup, it's a very smart re-use of the original parts.
- I hope KLR does not disapprove of me posting this, but I just had a look at my friends perentie with the kit fitted and I like it, imitation is the greatest form of flattery remember!
Here it is, the money I spent on this "budget" conversion.
I probably missed a few small things, the egt gauge kit I chose is VDO from ebay.
qty price (inc) total (inc) part supplier 1913.637 total 2 16.24 32.48 AN-4 to M10x1.25 https://www.motorsportaccessories.com.au/ 2 41.78 83.56 AN-4 hose end 90 deg SS 1 20.04 20.04 AN-4 Teflon SS braided hose 1 12.7 12.7 copper washers M10 pack 5 2 27.81 55.62 AN-12 weld on male SS 2 38.38 76.76 AN-12 hose end 45 deg alloy 1 46.43 46.43 AN-12 rubber SS braided hose 1 160.6 160.6 T3 to T25 adapter https://www.mtqes.com.au/ 4 1.177 4.708 nut manifold m8x1.25 4 1.782 7.128 stud M8x1.25x25 1 341 341 exhaust manifold 8943662470 https://www.donkyattqld.com.au/ 4 8.591 34.364 gasket exhaust manifold 2 4.62 9.24 head to manifold stud m8x40 1 682 682 HOLSET HE221W 3782376 XHC turbo ebay 1 154 154 post 1 4 4 t3 gasket ebay 1 19.998 19.998 tube round 1.6wall x 19.05 OD 304 SS stirlingsps.com 1 5.28 5.28 1/2" x 1/2" F&F steel elbow powellindustrial.com.au 1 25.267 25.267 hose rubber 25mm ortac 2 13.2 26.4 hosetail male 1" x 1"BSPT 1 13.959 13.959 elbow M&F 1" BSPT 1 5.423 5.423 hosetail 90 deg brass 5/16 barb to 1/8bspt 1 8.085 8.085 hose rubber 5/16 ID ifsqld.com.au 1 53 53 hose silicone 90 deg 76mm ID x 250mm long leg Silicone Hose CAPA - 3" 90 Degree w/ Long (250mm) Legs - Silicon 76mm | eBay 1 17.25 17.25 post 2 5 10 2x 2.5" exhaust clamps exhasut shop 1 4.345 4.345 gasket manifold intake 8970358831 isuzu
I’m looking forward to hearing how the HE221 goes. I was looking a using that turbo with a T25 Isuzu high mount manifold.
L322 tdv8 poverty pack - wow
Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
Perentie 110 wagon ARN 48-699 another project
Track Trailer ARN 200-117
REMLR # 137
They are from a later 4B motor. Here’s a pic of it installed on my other 110 with a Garrett GT28 turbo.
L322 tdv8 poverty pack - wow
Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
Perentie 110 wagon ARN 48-699 another project
Track Trailer ARN 200-117
REMLR # 137
So I'm finally finished the exhaust and drove the truck to work today.
Screenshot_20191206_124350.jpg
It's going really well, I haven't adjusted the fueling yet, just tyring to make sure everything is within reasonable limits.
I took it for a run on the highway and I'm getting consistent ~370c pre turbo temp. (would like opinions about this longevity affects of this temperature)
8-12 psi at speedo indicated 90kmph (1.15 high range gear) approx 2300rpm by my calculations.
Seeing up to 16-18psi on full throttle acceleration.
You need to try it under load to get a better idea, eg up a long hill or even better towing up a hill.
L322 tdv8 poverty pack - wow
Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
Perentie 110 wagon ARN 48-699 another project
Track Trailer ARN 200-117
REMLR # 137
Did a trip down NSW no troubles, loving it actually.
I've turned fuel up maybe 1/2 turn over stock.
I went a bit further than this, (2/3) and had a max sustained egt of around 600c up a long hill near jindabyne nsw, so about 1000m elevation.
Now back about to about 1/2 turn over stock I'm getting a max sustained of around 550c up long hills.
It's running lean, I don't get any smoke unless I'm under load at less than 1k rpm.
I think this setup is similar to the KLR in terms of the way it drives.
It's driving like a modern car with no lag at all
Did I mention I love it?
It's such a neat looking job. Well done!!
One question: where does the turbo oil supply come from?
Cheers
Great post, thanks.
I'm just starting my turbo conversion and your pics and explanation really help. Especially the parts list!
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