2.8 to 3.8 conversion. What is the downside?

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BundyLilux
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Unread post by BundyLilux » September 29th, 2007, 7:16 pm

The boy with the 97 is converting it to a 3.8 commodore engine. The conversion kit was $2,200 and he picked up a donor car for $800.

Hey Mate where did ya son get the conversion kit from ? and is that everything needed to do the conversion ?
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rumpig
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Unread post by rumpig » September 29th, 2007, 8:00 pm

i'm pretty sure our old vp commodore had a rev limiter on it from memory, recall mechanic mate hitting it one night when we were resetting something on the computer.

Corindi
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Unread post by Corindi » September 29th, 2007, 8:55 pm

BundyLilux wrote:Hey Mate where did ya son get the conversion kit from ? and is that everything needed to do the conversion ?
Yep that was everything. PM sent.
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Byrnesy
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Unread post by Byrnesy » September 30th, 2007, 11:01 am

I have the 2.7Lt Petrol Hilux and have thought about transplants. What about the prado 3.4LT V6 or 4lt V6.

Anyone heard or know anything?
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A1 Mech
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Unread post by A1 Mech » September 30th, 2007, 11:59 am

the 5VZ-FE 3.4L vvti prado motor wud be a good motor for a hilux (luxs came out with them actually but the prado one is tuned up and I think has a different intake manifold which gives it about 20kw on the lux) and has more then enough power to get the 2300kg prado to 100km/hr in around 10 seconds (5spd manual) around 136kw actually, not sure on wat u cud pick one up for tho. The 1GR-FE 4.0 vvti is a powerhouse with 189kw standard but wud cost alot to purchase. With your 90's hilux hav u ever gone searching for the reason behind it blowing seals? Obviously the engine is being pressurised in the wrong places or the seals are incorrectly installed? The motor from the 97 wud be the 1KZ-TE and are usually really reliable, u guys must giv em hell :), also it wont be a straight bolt into the older lux but u probably no that?

I contemplated dumping my 2.8 turbo'd diesel for a petrol 1UZ-FE V8 for along time and still get the itching to sumtimes but hav decided to build up a L series diesel made up of parts form 2LTE, 5L and 3L just for sumthin different. But If u r after a petrol and having been in a few vehicles with them fitted i wud defently recommend a 1UZ cause they r the shizz ;)
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Corindi
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Unread post by Corindi » October 1st, 2007, 10:12 am

A1 Mech wrote:With your 90's hilux hav u ever gone searching for the reason behind it blowing seals? Obviously the engine is being pressurised in the wrong places or the seals are incorrectly installed? The motor from the 97 wud be the 1KZ-TE and are usually really reliable, u guys must giv em hell :), also it wont be a straight bolt into the older lux but u probably no that?

Thanks A1, I expect the seals are being installed correctly as he is an apprentice Mechanic in a big work shop and all the work has been done at work with the assistance of a couple of very experienced mechanics. Once out, it will be pulled down to find the problem.

This is the 90 Model
Image

The 97 is an early 97 fitted with a 3L 2.8 litre and an aftermarket turbo. This is itImage

This is my 92 model on the same hill
Image

We do give them a lot, but try never to rev them above 3,500 and they are all serviced every 5000.

He realises it won't be a strait bolt-in but as one is a spray painter in a workshop that will take anything on and they also do radiators there. The other is a mechanic and he has an adaptor kit, I'm sure they will work it out with a bit of assistance from their employers.
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A1 Mech
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Unread post by A1 Mech » October 1st, 2007, 7:25 pm

o ok if both the motors are 3L (2.8D) it will be a straight swap. Its just the 1KZ is completely different to the L series diesels in that its alloy and fuel injected. Its defently very handy to hav a mechanics workshop to use :)
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Rollos Luxy
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Unread post by Rollos Luxy » October 20th, 2007, 10:22 am

If u don't mind I was just wondering where your son got the conversion kit from.

Corindi
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Unread post by Corindi » October 25th, 2007, 9:31 pm

Kit came from a mob out west called v6conversions. It is not just a plug in kit. Things like power steering lines have to be done your self.
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robshilux
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Re: 2.8 to 3.8 conversion. What is the downside?

Unread post by robshilux » May 13th, 2018, 12:57 pm

not sure if your still after info?

i have a converted hilux extracab, RN110r, running 10.5 x 31 tyres on 15x8 rims, 1" body lift, canopy, 120l LPG tank, water tank, (weighs 2 1/4 tonnes wet)

originally it had a VP six with the auto trans mated up on LPG, diaphram type
I changed out the the 4.8 gears to 4.1 (chasing economy)

economy was ~15l/100klm on petrol and ~ 20l/100klm on LPG on highway trips

Then I changed out the VP six to a later VX model, (but I still use the VP commodore computer system) and injected LPG

I now get 13-13.5l/100klms on petrol and ~17L/100Klm on LPG, (although I believe I can get better with further tuning) these figures are for general around town figures but don't drop much on highway

performance is quite OK, definately not a slug off the line even with the tall diffs. ratio and tyres wise the overall drive combo ratio is about 10% lower than a standard commodore. bit like a commodore towing a single trailer

overall very happy!

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