I NEED OVERHAUL TIPS!!!!! THE INFORMATIVE OVERHAUL THREAD =)

[pajerokid]

Engine guys!!!!!
special attention sirs yellow and afrasay!

Haay buhay!!! Palpak yung overhaul ko last september :cry:

Dukot overhaul lang kasi, di napalitan ang sleeves. Im considering an engine swap to 4M40 but am intimidated by sir woodfire's experience. Ang dami kasing fabrication. (Woodfire, if you could kindly share your experience again please :D )

Anyway this is what im gonna do this time.......

1) REPLACE SLEEVES (Replacement P4500)
2) REPLACE PISTON RINGS (TP Brand - Replacement also)
3) BUY OVERHAUL KIT (Orig - around P4000+)
4) REPLACE ALL CONN ROD BOLTS (Pucha 4d56 peeps, you should see yours... chances are deformed na rin. * P180 each)
5) BALANCE CRANKSHAFT (Less Engine Vibration..... so im told P5000)
6) POLISH CYL HEAD INTAKES (Less Vibration daw.... P3500)

etc.

Please note that some parts were already replaced during my previous overhaul. The person who's gonna do it is a lot better than my OLD mechanic. What else do i need to do? any tips? anything im doing na hindi dapat? post away! im listening :D

[lui]

ha? hehe bket po nio nsabing palpak ung sept. overhaul? may kilala kc akong mekaniko na nag overhaul dati nung L3 ko (4d56) dn cia nd nging ok nman cia for 2 yrs.(nbenta na)...

p.s.: lgi lang po ako ngbabasa d2 kya mdyo lam ko ung mga na popost d2.


peace...

[Yellow]

Pajerokid,

Paano mo nasabi na palpak? na check mo na ang compression ng mga cylinders? What are the signs na palpak?

[pajerokid]

lui::
Analysis has shown that the blowby gases pass through the pistons :cry: Hindi sa valves or sa valve guides. Ang ginawa kasi pinalitan lang piston rings (standard size pa rin). Parang hindi na take into account nung gumawa yung piston to wall clearance. bwiset talaga. pare, pilnalitan ba sleeve mo nung nag-overhaul ka? ty.

yellow::
Sir, remember yung oil na bumubulwak sa aking EGR hose? Its caused by blowby gases sa pistons. Excessive po talaga. haaay bad trip. Akala to talaga sa valves.

[lui]

ummm... i think pinalitan po cia. kc sbi sken nung una top overhaul lang gagawin kc cra na dw ung cyl. head gasket w/c is causing d overheat pero nund nasilip na ung piston pti ung wall nga e mdyo mlalim na ung kayod. pti nga ung camshaft naupod na as in ang laki talaga ng kain kaya un baba na kme ng makina...

p.s. top speed knga pla is 85km/h bgo overhaul den ng 120 na cia after

[Yellow]

pajerokid,

Siguro nga gaano kaya malakas lumabas ang oil sa PCV mo, sa akin kasi hinde naman lumalabas tuyong tuyo sya.

[otomatic]

sad to hear that unsuccessful overhaul of yours last sept!
If im not mistaken napa-asa ka ng dati mong mechanic na "dukot lang yan ok na!"
Tip #1, see to it that your shop/mechanic now is competent to do the general overhauling job(referrals from close friends or relatives), #2 make sure the machine shop who will do the sleevings, fitting of bearings, line borings and etc. is also reputable, 3 or 5 star shop is better. #3 use original mitsu prts whenever possible( like the valves and overhauling gaskets). Try ATCO Pasay for parts, www.atco.com.ph

[RS Sprint]

Maybe its a good time to have the head ported as well.

[pajerokid]

yellow::: yan din po conclusion ko.

lui::: ty for ur reply pare.

otomatic::: The new mechanic has done 2 pajeros and numerous L300s and Advetnures :D Im getting htk brand sleeves, Tp brand piston rings(Mitsu's OEMs). Im using original overhauling kit coz madali daw mag leak ang replacement. (I could vouch for this personally). BTW, meron na palang site ang ATCO. :D

RS Sprint::: Meron Bang effect ang pag-port ng Head sa diesel? wala pang nakakasagot ng tanong na yan eh :D What about balancing the crank and other parts? gaganda kaya ang takbo?



thanks! :wink:

[bogart]

pajerokid,

had my Gen1 (4d56T) overhauled last Feb. Here's my "gastos"
1 set Cylinder Liner 1,700.00
1 set Engine Valve (1st Class) 1,200.00
1 set Valve Guide 380.00
1 set Piston Ring (Orig) 3,400.00
1 set Piston (Orig) 2,800.00
1 set Piston Pin Bushing 300.00
1 set Overhauling Gasket (semi- Orig) 3,440.00
1 set Main Bearing 950.00
1 set Connecting Rod Bearing 550.00
1 pc Oil Filter 280.00
1 pc Silicon Gasket 85.00
1 set Machine Shop Service 4,690.00
1 set Liner Re- Boring 600.00
1 set Overhauling Service Fee (Labor) 3,000.00
1 pc Timing Belt 750.00
1 set Timing Belt Installation Service 400.00

I bought most of my parts in OTOMOTO, Taft Ave, Pasay City. It's very near LRT EDSA station, 3-4 stores away from ATCO and the others from PIYEZA, Alabang- Zapote Rd., very near Zapote, infront of Samson Technical School in Zapote.

My advice is to compare prices from other stores, yun nga lang, talagang tiyaga ang kailangan mo.

Goodluck! :D

[Ungas]

pajerokid::: Habang naka baba yang makina mo, you might wanna think of ceramic coating to contain engine heat (plus ponies for sure). :D

Port and polish for your cylinder head, three angled valve seat cut, and the works +++ :D

Balance your pulley, crankshaft, flywheel, pressure plate.

Lighten flywheel, adjust pressure plate clearance against the flywheel. :D

[kimpOy]

wow ok itong thread na ito!!!
marami akong hindi maintindihan pero willing to learn

[woodfire]

Pajerokid, I sympathize.


Swapping to a 4M40 makes good sense. Kaya ako nahirapan is because nobody guided me and it was all trial and error. Anyhow, I studied how Diamond Motors do it (yes, they have done a couple of swaps/conversions already), and some of the modifications I did was really superfluous and unnecessary if only the "salpak" measurements were exact.

If you will swap to 4M40, I can recommend you to Diamond Motors. I suggest also that you buy surplus and bring along a good mechanic (I can also recommend one to you). Bringing it to Diamond will save you a lot of headache later on. If you do decide, I can introduce you to the Head of Technical/Services of Diamond.

If you decide to proceed with your overhaul, I personally suggest that you buy OEM parts. Try El-Dorado, they are cheaper than ATCO by a mile!

[pajerokid]

bogart::: Thanks for the price info dude! :wink:

ungas::: lightened flywheel? Baka mawalan ng torque pare But i think im going to have the parts you mentioned balanced. I heard malaking decrese in engine vibrations.

kimps::: this is something every diesel peep should be informed about :D

woodfire::: sir, what branch of diamond are we talking about? if the prices are near, id probably consider this

[pajerokid]

woodfire::: Sir im seriously considering swapping to a 4m40 this time around.... para hindi na ako apihin ng mga naka patrol diyan hehehe :mrgreen:

If its not too much trouble, could you please list down the parts that need to be replaced?

For sure kelangan ang sumusunod::

1) Engine Assembly
2) Transmission
3) Propeller Shaft
4) Transfercase (?)

And, saan pong Branch ng Diamond motors yung na mention nyo na nagsw-swap?

thanks for sharing your experience sir! :mrgreen:

[Ungas]

ungas::: lightened flywheel? Baka mawalan ng torque pare But i think im going to have the parts you mentioned balanced. I heard malaking decrese in engine vibrations.

Duda rin ako sa sinasabing lightened flywheel, paniguradong magbabago ang torque. I haven't heard anyone done this yet, magpasiguro ka na lang pre, wait for others to do it first then tsaka natin malalaman kung may dagdag o bawas ang torque.

Pero dun sa engine balancing, :twisted: pipino ang vibrations ng makina mo after you've done the balancing. Wanna race over the lahar areas? Ika nga ni sir afrasay, "ginawang EDSA yung lahar..." lolz :D :D :D

[pajerokid]

ungas::: aba! this is the first "gauge" hamon in the diesel threads!!! :lol: Sure!!!! hehehe :mrgreen: Im warning you pare, i did 80kph on the way back!!!! :twisted: i just slowed down to conserve my balljoints.

Pare.... youre going up against a many time Paris-Dakar champion (well, yung 3.5L v6 na paj yon but nonetheless, paj pa rin :D )hehehehe :wink:

[Ungas]

pajerokid::: katuwaan lang, just for the kicks este pix pala, ahehehe :mrgreen:

[otomatic]

pajerokid,
Tama! mag 4M40 ka na, para bagay na bagay na ang angas ng dating ng pajero mo. :D Matibay pa, dahil naka timing chain. Yon mga lang umiingay pag naluluma during start-up. Tip ko lang pag bili mo ng engine, sana mapaandar mo ito ng matagal-tagal, yung uminit man lang ng konti ang langis. kung pwede lang makabitan ng radiator :roll: para maobserbahan yung breather hose for blow-by gases.
Look for the engine na hindi nilinis o napressure wash, para kitang kita kung may tagas ang langis. And look for rust residue sa mga in/out ng cooling system(sa mga pinutol na radiator hose), the minimal the better. Kung wala mas ok! Pero "quidaw" baka nilinis lang.

Transfer case kasama yon sa transmission ng 4M40. Do you consider choosing the automatic tranny para less hirap sa traffic? Malakas na maman engine mo eh.

[RS Sprint]

Pajerokid,

Yes I would think so meron gains ang porting and polishing sa diesel engines like gas powered engines.

Basic sa i/c engine is that its like a giant air pump diba? The more volume of air you flow into and out of it at a greater velocity, the more power you will make.

PnP will flow more air and more smoothly too, giving uniform flow.

And yes, as you can tell I'm a fan of Autoplus (my car is tuned there, as well as the cars of my friends, about 10 cars in all) and OK ang headworks nila.

They've done headworks on a 4D56 (tama ba yun?) and malaki ang gains, pero palit din siya intercooler at plumbing at nagtaas ng boost. Not sure ano ang final WHP niya, pero the engine revs smoother to redline (perfect for the highway) and tumalon talaga ang torque curve niya (perfect for off-roading).