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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Thu Dec 25, 2008 16:38 Post subject: Fitting a TURBO in a Naturally Aspirated 4D56??? |
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I have this Plan Long time ago since i had it,i already ask many Mechanic and had many Information about Fitting a Turbo Kit to a Naturally Aspirated 4D56!
I have seen A lot of Information on Internet that say the Diesel Engine can Withstand with the Boost Pressure of a TurboCharger and it's Heat!
Not like the Petrol one that will Melt the Piston when the Turbo Kit has been installed!
BUT,i Have to get More Information Before Starting The Project of INCREASING THE HORSEPOWER OF A 4D56 WITH TURBO KIT!
My Question is:
*How Much HorsePower are the 4D56T?
*How Much Bar(Kg/Cm)are the Standard 4D56T Turbo Produce(When it Leave the Factory)?
Does anyone had Installed a Turbo Kit in his Pajero Before?and How Much Horse Power will it increase?
Thank For Any Advance and WISH YOU ALL HAD A HAPPY MERRY CHRISMAS! |
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Posted: Thu Dec 25, 2008 16:38 Post subject: Google Ads keep the POCUK free to join! |
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El Ricko ********
Joined: 12 May 2008 Posts: 5453 Location: UK
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Posted: Sun Dec 28, 2008 13:00 Post subject: |
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Hi Winston
A few years ago I turbocharged a Nissan LD28 engine (2.8 6cylinder) that I had grafted into my Range Rover
I had terrible trouble with diesel knock and underfueling or over fueling
it took about 4 months of graft to get the engine running well with 8 psi of boost and required an electronic enrichment device
after 2000 miles the engine started breathing heavily and had suffered damage to all 6 bores due to the piston rings allowing the boost presure to blow the oil away
After a rebore and set of LD28T piston rings ( sent from japan) then engine seemed ok till it turned all the main and big end bearings.
So it got scrapped and swapped for tdi 200 landrover engine.
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If you 4D54 has recently been rebuilt and the crank is factory spec and not machined, and you can fit a set of rings from a 4d56t along with an injector pump from a 4d56t it would be worth a look
But from my experiances I would get a complete 4d54t engine and fit it |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Mon Dec 29, 2008 15:47 Post subject: |
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Thanks For The Advice
I Think The Only Difference Between the 4D56T And 4D56 N/A is only with the Piston Ring and a Injector Pump!
But when i Examine and Compare With my 4D56T In My Other Pajero,the Injector Pump are Same,Both are Diesel Kiki Pump!The Only Difference Is the Manifold Pressure Compensation Device on The Top Of Pump!
I Think it is a Valve that When the Boost Pressure Are Applied to the Device,it will Push a Plunger to bottom to Enrich the Fuel Delivery!
Don't know wheather i can Just Install the Device to the Pump without Any Modification as i see there is many Threded Hole around the Top Of Pump Where the Device Should Mount
And i See your Previous Post,Are you Say The Big-End Bearing?As i know this is the Most Robust Construction In A Diesel Engine! |
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El Ricko ********
Joined: 12 May 2008 Posts: 5453 Location: UK
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Posted: Mon Dec 29, 2008 18:17 Post subject: |
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hey Winston
the big end bearings were a different design, the turbo ones were solid, and the original ones had grooves.
With regard to the injector pump you tend to find that they are set up differently for turbo applications with different amount of fueling and as you say the boost enrichment device
I converted a number of Perkins Prima ( montego/sherpa) engines to turbo when I was fitting them to Landrover's and i had to fit the turbo injector pump to get the correct fueling |
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redneck mitsi Newbie
Age: 53 Zodiac: Joined: 27 Dec 2008 Posts: 4 Location: mid canty nz
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Posted: Tue Dec 30, 2008 1:13 Post subject: |
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i think you would get abetter result and save time and hassles by changing whole engine with one that has turbo . wreckers might give you good deal on swap . not a big gain with turbo but still a noticeable improvement on power. aprox 15 hp to be had depending on engine and turbo . |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Tue Dec 30, 2008 9:01 Post subject: |
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Do You Mean the Big-End Bearing for the N/A 4D56 Has a Grove and Turbo Ones Dosn't?What the Grove actually Do?
At My First Pajero,I did Replace it with a New Reconditioned 4D56T,But This One is My Second Pajero and it is Waste to Replace the Whole Engine Because it has a Full Engine Overhaul including the Injectors Nozzle,Injection Pump and Many More like The Bearing!
At First i Take The Car From Someone who has no Money to give to our Company so he Give Me This as 20,000 Ringgit Malaysia,About 3500 In Uk Paun!
As i Take it,it cannot Run and It's Hard to Get It Fire and Alot of White and Black Smoke it is in a ScrapeYard Condition!
After That i Send it to the Garage to Give it a Full OverHaul Good at Engine and the Whole Of the Pajero!Spend about 2700-3000 UK Pound at the Garage!
So Are there anyway to Increase the Horse Power of an Diesel? |
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El Ricko ********
Joined: 12 May 2008 Posts: 5453 Location: UK
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Posted: Tue Dec 30, 2008 18:19 Post subject: |
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Hi Wilson
no is was saying when i was upgrading the perkins prima engines to turbo the bearing were different, you would need to check with mitsubishi if the turbo version had different bearings.
I would try to use the injector pump and injectors from the turbo engine to ensure the fueling is suitable for the turbo. |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Wed Dec 31, 2008 14:21 Post subject: |
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But the Injection Pump are Just After Recond Few Month Before,i Think it also can be fitted with Fuel Enrichment Device that will Increasing the Fuel Delivery when the Boost are Applied
I will Check with my Mechanic about the Big-End Bearing Later |
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settaz69 Newbie
Age: 45 Zodiac: Joined: 27 Dec 2008 Posts: 7 Location: BLYTH
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Posted: Wed Dec 31, 2008 14:46 Post subject: |
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dont do it from previous story's heard then it will make more problem then they are worth if it was ment to have a turbo then it would have or as said b4 then put a turbo engine in
just in my opinion |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Tue Jan 06, 2009 14:04 Post subject: |
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Thanks for the advice,i already get many information on Haynes about 4D56T and 4D56,they both are same engine and have a same internal parts,but i think the Piston ring are bit diffrent from the turbo ones!
If for the standard turbo 4D56,how much Boost do the turbocharger produce? |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Thu Jan 08, 2009 11:00 Post subject: |
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Are the 4D56T(Turbo Diesel) has any blow-off valve? |
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El Ricko ********
Joined: 12 May 2008 Posts: 5453 Location: UK
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Posted: Thu Jan 08, 2009 11:12 Post subject: |
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it has an overboost valve on the end of the inlet manifold as far as i am aware |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Thu Jan 08, 2009 14:18 Post subject: |
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So the valve should open ONLY when overboosting are occur?
Not as like the petrol model that when you take your foot off the accelerator then it will blow the excess pressure? |
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El Ricko ********
Joined: 12 May 2008 Posts: 5453 Location: UK
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Posted: Thu Jan 08, 2009 14:30 Post subject: |
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hiya,
yes it opens when you overboost.
( a dump valve is what some cars have fitted that open when you lift your foot)
paj seem to run about 7-8 kg/cm2 from what i have seen |
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Pajero 4D56 ******
Age: 34 Zodiac: Joined: 25 Dec 2007 Posts: 2234 Location: Malaysia,Kuala Lumpur
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Posted: Thu Jan 08, 2009 14:41 Post subject: |
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That dump-valve will produce a sweet noise when it blow the boost throught narrow spaces
Anyway that it can be installed on the 2.5 Pajero engine as it does not have any vacuum to power up it
Are you sure that 4D56T are running with a boost pressure at 7-8 Bar?that very-very much maybe its in psi form?i have seen some heavily modified petrol turbo engine,they only run with 1.5-2.0 Bar (Kg/Cm)! |
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