turbo- super charger ?

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31 Oct 2012 21:33 #1 by dandjcr
dandjcr created the topic: turbo- super charger ?
Forum Home > OKA Maintenance > turbo- super charger ?

oka 098
Member
Posts: 58
turbo or super charger ,eny ideas,eny one heard of the electric motor super charger
March 6, 2011 at 6:58 PM Flag Quote & Reply

Darren Webster
Member
Posts: 13
Give the perkins to someone with a boat for an anchor (fill with concrete first) then re-power with something from this century!!
March 6, 2011 at 7:21 PM Flag Quote & Reply

Garry & Chris
Member
Posts: 104
hahaha not nice Darren
March 6, 2011 at 7:27 PM Flag Quote & Reply

Peter & Sandra James Oka 374
Member
Posts: 412
Electric superchargers were proven to be a con a few years back, takes more HP to generate the power to drive the supercharger than it generates.
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Oka 374 LT Van

March 6, 2011 at 7:33 PM Flag Quote & Reply

Darren Webster
Member
Posts: 13
Garry & Chris at March 6, 2011 at 7:27 PM
hahaha not nice Darren
Sorry your right it was not nice it was a waste of good concrete!
March 6, 2011 at 7:57 PM Flag Quote & Reply

oka 098
Member
Posts: 58
what is in your LT darren ?
March 6, 2011 at 9:30 PM Flag Quote & Reply

joseph baz
Member
Posts: 331
Superchargers have a few advantages over turboes,you do get more power at the lower rev range,motor runs cooler,you get a free flowing exhaust without the restriction of the turbo turbine,the important issue is to have a supercharger that was matched properly to the motor as you will want engine longevity,once the super been installed the fuel pump needs to be recalibrated and if the job was done properly you should have a sligh decrease in fuel consumption........now after all that..is it worth it on a Perkins?? and if it is, can you find a kit for it?
cheers,Joe
March 7, 2011 at 11:24 AM Flag Quote & Reply

Andy (and Deb)
Member
Posts: 25
Try Turbotech in Redcliffe (nr Perth) 08 9478 2144, and talk to Bill.

I was quoted $2800.00 to have them make one to fit each specific vehicle, NOTE - fitting it was extra. They have made a few for Okas.
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Cheers

Andy and Debbie 'Oka 055'

March 7, 2011 at 11:50 AM Flag Quote & Reply

Dean & Kaye Howells
Member
Posts: 79
Is there a direct bolt on waste gated turbo available to fit ?, if so would seem a better bet. The standard turbo strikes me as a bit weird, something you would normally expect on a constant rev engine such as a boat or a stationary engine.

Deano
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March 8, 2011 at 2:34 PM Flag Quote & Reply

Darren Webster
Member
Posts: 13
oka 098 at March 6, 2011 at 9:30 PM
what is in your LT darren ?
Just finishing off LBZ Duramax and 1000 series Alison, Nissan transfer-case.

March 15, 2011 at 7:51 PM Flag Quote & Reply

oka 098
Member
Posts: 58
how big is yours, oh bigger , what is that worth?
March 15, 2011 at 9:08 PM Flag Quote & Reply

Outback Jack
Member
Posts: 381
HI Darren,
Any pictures of your install? How did you get the allison matched to the nissan transfer case?
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March 15, 2011 at 9:28 PM Flag Quote & Reply

Hal Harvey
Site Owner
Posts: 510
Come on Darren, we're all standing by... but I reckon you'd better start a new post with it... there will be many many questions!
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Hal

March 15, 2011 at 10:17 PM Flag Quote & Reply

Outback Jack
Member
Posts: 381
Hal, I agree , new topic, pictures and info.

Doc is doing similar and it would be good to have a look at one. Plus the sound must be awesome.
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March 15, 2011 at 10:39 PM Flag Quote & Reply

oka 098
Member
Posts: 58
gday Darren can't find photos have you put any on yet?
March 21, 2011 at 6:57 PM Flag Quote & Reply

Darren Webster
Member
Posts: 13
Darren does not get on very often, I check, but obviously not on the right pages! Sorry everyone, will get him to give more info and photos once it is finished. It has been a very long (and expensive) project but sounds fantastic and hopefully when we get it back this Saturday (albeit not completely finished but at least going) we will let you all know. We are taking it up to Condo750 for Easter so will give more info then!
Happy Easter
Cara
April 14, 2011 at 10:39 AM Flag Quote & Reply

This email address is being protected from spambots. You need JavaScript enabled to view it.
Member
Posts: 39
G'day I have at home a new Holset brand turbo which is considerably larger than the standard OKA one. Still away at work so cant supply the serial or assay numbers but my problem is conficting advise on its suitability. One opinion says bigger turbo more air = more power, another few opinions state the bigger the turbo will take longer to spool up & another said he replaced a OKA turbo some years back & put a smaller one on it. Hard part is any of the specialists I contact tell me to bring the vehicle in but thats not a option at present as it is unrego'd Any advise? Thanks Darren
April 14, 2011 at 9:22 PM Flag Quote & Reply

Peter & Sandra James Oka 374
Member
Posts: 412
Best to find out what turbo Tim fitted to iLean as it apparently does go well. The water to air intercooler would make a difference too but putting a wastegated turbo on would help considerably.
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Oka 374 LT Van

April 15, 2011 at 7:20 AM Flag Quote & Reply

Hal Harvey
Site Owner
Posts: 510
Tim's turbo story is here (click)
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Hal

April 15, 2011 at 8:22 AM Flag Quote & Reply

Alister McBride
Member
Posts: 97
dclilly, it depends on the combo of turbine and compressor but yes in general a bigger turbo doesn't necessarily mean more power because if you don't have the volume flowrate through the exhaust to spool it up all you end up with is back pressure in the exhaust! It very much needs to be matched to the engine. Smaller and wastegated spools up early and keeps the boost there all the way to the top.
On that note, i am looking in my perkins workshop manual and i see in section 'turbocharger' there is a STANDARD wastegated turbo option for our engines and seems to just bolt straight up (from what i can tell...), looks like the boost pressure is 11psi. Did i mention it was a STANDARD option...? Does anyone know if we can get this turbo anymore, seems it is MUCH simpler to just bolt this on than to replumb coolant, inlet ducting and oil lines etc. Has anybody had any experience with this turbo? Reliability etc? (If anybody has the manual it's page T.4).
Cheers
July 4, 2011 at 12:52 AM

Forum Home > OKA Maintenance > turbo- super charger ?
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Dave and Pauline Gray
Member
Posts: 84
Hi Alister I am reliably informed that this company www.diperk.co.uk can source most perkins parts provided you supply an engine no the only catch is they dont export so you would need a uk contact to act as a mailing go between.
Cheers Dave
July 4, 2011 at 9:08 AM Flag Quote & Reply

Alister McBride
Member
Posts: 97
Thanks Dave! I'll look into it, i meant to contact Perkins Aust today aswell but didn't get around to it... tomorrow.
I was probably also after any feedback on peoples experiences with it (if any), are those perkins wastegated turbo's as reliable as say Harrop etc? Will they last the million odd km's the phaser will etc?
cheers
July 4, 2011 at 7:44 PM Flag Quote & Reply

Dave and Pauline Gray
Member
Posts: 84
Alister I see no reason why a waste gated turbo shouldnt do similar kms/;hours as the standard unit my expierence in this comes from operating trucks up to 600hp with turbos that operated with tempretures in the exhaust gases far in excess of what the phaser should generate but fitting a pyrometer into the system would allow you to monitor those temps and keep everthing under control.
cheers Dave
July 4, 2011 at 10:10 PM Flag Quote & Reply

Peter & Sandra James Oka 374
Member
Posts: 412
Can we find out the number/model of the wastegated turbo that Tim fitted that bolts on?
alternatively the one that Alister has found in the manual. I had a look in my electronic copy but it has nothing for the turbo at all.
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Oka 374 LT Van

July 5, 2011 at 8:59 PM

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