Engine conversion in NSW

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09 Mar 2015 11:31 - 10 Mar 2015 05:42 #2 by OKABloke
OKABloke replied the topic: Engine conversion in NSW
Drive Down To Melbourne and get Paul Knott To do the lot. Drive in Drive Out. Has done the conversion and knows what is required to do the job. More work than you think with close to 200 parts required to do the conversion.
Then get it Engineered by a local (N.S.W.) Engineer

For Sale:
XT and LT Parts and Service Manuals Available on CD or Download. $150.00 Set

OKA 4x4 Facebook Page
www.facebook.com/groups/1597409843913222/

David
Last Edit: 10 Mar 2015 05:42 by OKABloke.

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09 Mar 2015 17:33 #3 by Tony Lee
Tony Lee replied the topic: Engine conversion in NSW
Paul has a local engineer who is accredited for all states.

BTW - you might have to get on the end of the line. Not many in the line, but availability is the problem. Less so if you just want a Cummins engine and use the existing gearbox.

Tony

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09 Mar 2015 19:52 #4 by darren lilly
darren lilly replied the topic: Engine conversion in NSW
Having a engineer who can compliance for all states is very handy he didnt mention that when I spoke to him a few weeks back but he did say his engineer would not pass a OKA with a nissan transfer which a few people are running. I also had a quote off Brunswick Diesel they install durmax engines, 4L85e gearbox and a nissan transfer, they also replaced the radiator, wiring, air conditioning, tail shafts universals,exhaust etc all brand new except the transfer case. The only mechanical stuff they didnt replace was the diffs,suspension and steering box. As we are all aware a number of people have sucessfully completed or in the stages of doing their own backyard conversions so I would a assume a competant registered mechanic who specialises in conversions should be able to do the same. I do agree that Paul is probably one of the best options but I want to have a few opinions and maybe somewhere more convenient for me preferably around Newcastle or Sydney. Thanks

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10 Mar 2015 05:56 #5 by OKABloke
OKABloke replied the topic: Engine conversion in NSW
The biggest issue with an Engine conversion is all the one off work required. If the person you use has not done a conversion on an OKA then it will cost a lot more and not likely be correct first time round. We are running a Nissan Patrol Transfer Case and would put one in another conversion any day. Just need to find an engineer who is happy with this. Or fit a NP205 behind the Auto.

For Sale:
XT and LT Parts and Service Manuals Available on CD or Download. $150.00 Set

OKA 4x4 Facebook Page
www.facebook.com/groups/1597409843913222/

David

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10 Mar 2015 09:04 - 10 Mar 2015 10:07 #6 by Peter and Sandra OKA 374
Peter and Sandra OKA 374 replied the topic: Engine conversion in NSW
Apparently the reason that engineers are not happy with the Nissan transfer case is due to the handbrake BUT as Russ posted in the other thread the handbrake on the Nissan transfer is identical to his Isuzu one which is off a much heavier vehicle. Our Nissan transfer has been perfect despite its initial 96k life in a Patrol and a subsequent 47k in the Oka fitted with Marks Adapters low range gears it showed no signs of wear when I had a peak inside while it was out a couple of months back. That was with the original bearings and seals from Nissan as well.
I have been sorting out a 6bt and gradually accumulating the necessary bits to fit it in place of the Perky, it will be later in the year though as we're doing house reno's first.
The engine is pretty much ready to go and I've also got the adapters to fit the existing 4L80E and Nissan transfer case.
After Mayford and seeing all the 6bt's in Oka's I was itching to get it in but I promised the house would be done first ;-)))

OKA 374 LT Van, converted to camper/motorhome,
400ah Lithiums, 1100w solar, diesel cooking heating and HWS,
Cummins 6BT, Allison 6 speed auto, Nissan transfer.
Last Edit: 10 Mar 2015 10:07 by Peter and Sandra OKA 374. Reason: addendum

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10 Mar 2015 09:54 #7 by The Worb
The Worb replied the topic: Engine conversion in NSW
Hi Darren,

I am going to do the conversion myself and am interested in your original question of an
engineer in NSW as well. I would like to talk to them before I do the conversion so I
know what they expect at inspection time. I'll keep posted on this article. My conversion
though will be replacing the Perkins for a Cummins at this stage and not for 8 moths or
so, but I do have my motor already on a stand in the shed.

Cheers Brian

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08 May 2016 12:58 #8 by fran philipson
fran philipson replied the topic: Engine conversion in NSW
Hi Brian, how is the Cummins conversion coming along? I would like to have a look at it if possible .
Cheers George 0427130139

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08 May 2016 15:58 #9 by Peter and Sandra OKA 374
Peter and Sandra OKA 374 replied the topic: Engine conversion in NSW
I've started fitting the Cummins, with a bit of luck it should be in this week ;-)))

OKA 374 LT Van, converted to camper/motorhome,
400ah Lithiums, 1100w solar, diesel cooking heating and HWS,
Cummins 6BT, Allison 6 speed auto, Nissan transfer.

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08 May 2016 17:24 #10 by Ralley
Ralley replied the topic: Engine conversion in NSW
Before I started I talked to my local engineer and asked him what was required and it really wasn't a lot. I also asked about the allowable HP increase and he was more concerned that it had enough not to much. I even told him that I would need to platted the chassis because it was cracked at the engine mounts. We also welded new mount points on for the gearbox and transfer, he was happy with that. The engine needs to meet the same emissions as the Perkins. The problem the engineer has with the Nissan transfer is that it was never released from factory in a vehicle as heavy as the OKA not just the handbrake. The same goes for the size of the uni's. We made sure that all the mounts and the parts that we made were better than what came out. He also wanted to ride in it to see how it all ran.
If any one wants to have a look to see how we went about it let me know.
Cummins 6BT with different turbo, 60lbs valve springs, 3200RPM governor spring, 200amp alternator running through an alternator to battery charger, water to air intercooler, modified XT radiator, 4" exhaust with exhaust brake that can change the shift sequence in the transmission. Allison 1000 6 speed with Arens push button controller, modified 4wd housing to take output speed sensor, clockable adaptor to mount NP205 that has a 29 spline input shaft and maxi handbrake.

It really is a big job that takes time to put all the fiddly bits together and Paul really does have it sorted and has the runs on the board.

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09 May 2016 05:58 #11 by Tony Lee
Tony Lee replied the topic: Engine conversion in NSW
Ralley, where did you source the engine and transmission

Tony

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09 May 2016 07:30 #12 by fran philipson
fran philipson replied the topic: Engine conversion in NSW
Hi Brian , Sent you a P M .
Cheers George

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09 May 2016 15:24 #13 by Alister McBride
Alister McBride replied the topic: Engine conversion in NSW
Ralley, also interested to find out where you sourced engine, tranny, controller and 29 spline NP205? Also, can you explain the 'maxi' handbrake?

Tony, don't tell me you're thinking of going non-standard... tut tut!

cheers, alister

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09 May 2016 15:48 #14 by OKAPETE
OKAPETE replied the topic: Engine conversion in NSW
For all those interested in going to the DARK side. Both Ralley and Peter Oka374, amongst others got their engines from here,

www.gumtree.com.au/s-ad/banksia-park/eng...econdhand/1082126227

via me. Yes the engines are ex rail genset motors, but have proven to be good if not great value for money. Yes you need to do some mods to it from its genset spec, or the alternative is a Dodge ram specked motor that you can purchase from Paul at East coast Oka Spares that is already Automotive fitment, There are pros and cons to both. Make your inquiries, Do your homework....and Google is your friend here. It is not a cheap conversion, (not many conversions are) as there are considerable modifications, Paul is the Guru here, as with anything Oka related, and its the old story, you get what you pay for, and unless you can source and/or do the work yourself, I have no qualms in recommending Paul and Ian and their workmanship, as has been testified to previously on this Forum.
Blessings.
Pete.

Chaplain. Won x One Chaplaincy.
AM SAE-A. AAFRB.

Oka 383. In process.... Cummins 6bt. Allison 2500 6spd. LOMAX 3:1 205 T/case. Dana 80 F & R.
Oka 358. Van. Perkins. swift turbo intercooled. NP205 conversion. LSD F&R. Camper conversion in progress.
LIFE.....is keeping OKApied.

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09 May 2016 16:47 #15 by Peter and Sandra OKA 374
Peter and Sandra OKA 374 replied the topic: Engine conversion in NSW
For those interested I have written a word doc on the parts required to change these engines to suit the Oka.
As Pete said most of the parts cans be sourced online through ebay or if you have MUCH deeper pockets from any Cummins dealer.
There are also plenty of 6bt's on ebay in various guises, Dodge Ram engines are the best to obtain rather than a truck or school bus engine. The Ram engines will also require different parts to suit the Oka they are not a direct fit in standard form.

OKA 374 LT Van, converted to camper/motorhome,
400ah Lithiums, 1100w solar, diesel cooking heating and HWS,
Cummins 6BT, Allison 6 speed auto, Nissan transfer.

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09 May 2016 19:50 - 09 May 2016 20:10 #16 by outyonda
outyonda replied the topic: Engine conversion in NSW
OKA parts have Cummins 6bt P pump engines in stock
220 hp
HWY speck
100k to 120k miles
& rebuilds

OKAs 091, 093, 094, 113, 346x6 & 405
Last Edit: 09 May 2016 20:10 by outyonda.

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09 May 2016 20:27 #17 by Ralley
Ralley replied the topic: Engine conversion in NSW
The transmission was a 2007 model that was mounted in a chassis as a display model in the US that had never been used. I found it on eBay. It was a 2wd model so I also sourced the parts on eBay to convert it to 4wd. There is also a local place in oz to source parts at a good price. All the wiring, computer, program, oil cooler and shifter came from Heavy Automatics in Sydney.
If you go down the Alison path you need to carful what you by. In the 1000 series there is an Allison and a GM Allison the wiring is different and the computer in different. Mine is a genuine Allison, it is much easier to work on and there are plenty of Allison dealers around.
Originally the np 205 had a 23 spline so I machined the housing to take the bigger bearing and a 29 spline input shaft. The Allison has the same on the output. The handbrake is the same setup as on the NT, Spring on air off. We used the original drum and mounted an actuator to it.
Rob

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10 May 2016 07:16 - 10 May 2016 07:25 #18 by Tony Lee
Tony Lee replied the topic: Engine conversion in NSW

Alister McBride wrote: Ralley, also interested to find out where you sourced engine, tranny, controller and 29 spline NP205? Also, can you explain the 'maxi' handbrake?

Tony, don't tell me you're thinking of going non-standard... tut tut!

cheers, alister


It isn't me, it is my bloody left knee - wrecked by a couple of years of Australian rules in a colts team at Snowtown. Familiar scenario - knee hot and swollen by Saturday evening, limp around until practice on Thursday after school, play Saturday and repeat.

Knee is good for a certain number of clutch depressions per day so at the australia day gathering last year, I asked Paul to source a 6BT plus Auto when he went to the USA. Somehow doubt that will happen so looking at alternatives.
Another possibility is just to fit a 6BT and keep the manual transmission. With a bit of lugging the engine here and there, might be able to reduce the gear changes to way less than half and that should also do the trick.

Trouble is I don't have the enthusiasm, facilities, strength or time to do the conversion myself - or even to source the bits and pieces - so I really need a turnkey provider and Paul and Ian provide that. Couple of years driving around in a F350 weighing 6 tons all up with a big V8 and auto transmission with lockup in all gears make me realise that there are more comfortable ways of getting around than an OKA so if I can just tweak the OKA a bit I will have the best of both worlds

Tony
Last Edit: 10 May 2016 07:25 by Tony Lee.

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10 May 2016 17:31 #19 by Peter334
Peter334 replied the topic: Engine conversion in NSW
The engineer that I went to was not concerned about the hand brake as log as it held the vehical at an 7diagree hill and it did, it was the one paul uses ,did a brake test and nearly stood her on her nose and he come close to smacking the windscreen with his head at 60ks and we did that twice ,I don't know why you would be worried about the Nissan trans as it only works when you need 4x4 not 2wd ,Tony go auto best thing ever and as I have always said that stupid ratio gearbox is only good for a boat anchor or scrap.

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10 May 2016 20:03 #20 by Tony Lee
Tony Lee replied the topic: Engine conversion in NSW
Peter, I would if I could get a combination that I know works together. I don't believe it is just a matter of adding a auto box behind the existing engine because the standard Perkins hasn't normally run with an auto box so there might be issues doing that. 6BT has at least some history with automatic boxes so that would be a good match.

Would be nice if the V8 and the drive train in the F350 fitted in as it would be cost effective to just gut it and ship it all over here and dump the chassis, but that won't work either.

Maybe Paul will get lucky and find one in the US or Canada

Tony

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10 May 2016 21:09 #21 by Joseph Baz
Joseph Baz replied the topic: Engine conversion in NSW
Nice to see people moving into the 21st century,Tony what auto are you thinking off to mate with the 6BT? if you are thinking of an Allison why dont you get a Cummins ISB,much quieter than the 6BT.
Cheers,Joe
The following user(s) said Thank You: DarrenWebster303

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