4d56 experts,need your help!

**voltscastillo** · March 17th, 2009 08:33 AM

do not pay more than 40,000

. hinahanap ko yung thread ng overhaul ng 4d56 di ko makita, medyo na tackle na itong issue na ito before kasi... you can do a search if you like...

3x kayo naputulan ng timing belt? wow. buti nde sumalpok yung mga valves sa piston? non-interference engine nga ba yung 4d56?

maybe you can buy the 4d56 turbo intake manifold, turbo pistons, turbo, wastegate, and intercooler as a worthwhile upgrade hanggat nakababa yung makina?

**afrasay** · March 20th, 2009 06:22 AM

Sus!!! 324,000 plus kms na pala eh sulit na yan. 3x naputulan ng belt eh are you following the recommended 80,000 to 100,000 belt replacement? It seems the only time you will change the belt is when it breaks. Voltscastillo is right, good thing you didn't break anything especially your valve lifters during these belt breakage.

**4JGtootsie** · March 20th, 2009 09:39 AM

"nagsimula ang kwento sa oil leak galing sa possible cylinder head hasket na na warped na. tapos eto nga binuksan na, kaso nakita na ganito na mga valve"

Ginamitan na ba ng straight edge yung head?
Nag overheat ba yung makina?
Did the previous top overhaul follow the right sequence, stages and torque requirements?

Aluminum ang cylinder head ng 4d56 kaya maselan.

**robin_micmac** · March 20th, 2009 11:11 AM

Originally Posted by afrasay

Sus!!! 324,000 plus kms na pala eh sulit na yan. 3x naputulan ng belt eh are you following the recommended 80,000 to 100,000 belt replacement? It seems the only time you will change the belt is when it breaks. Voltscastillo is right, good thing you didn't break anything especially your valve lifters during these belt breakage.

It happened to me once. Naputulan ako timing belt not because na overuse cya. naputol yung balancer belt nya and bumara sa timing belt kaya nag snap buti na lng it happened at slow speed. what i noticed sa design ng later 4D56 the one fitted roller rocker arms is that these RRAs do snap easily. I think this was a safety factor made by the designers to save us from costly repairs of a valve interference pag naputulan ng belt. instead of causing a bent valve or mabutas ang piston, the RRA just breaks para bang fuse sa electrical, it bursts pag may short to avoid further damage. you just have to replace the damaged rocker arm and you are good to go again no need to dismantle the cylinder head. its better than the older type rocker arms nila.

**mark_t** · March 20th, 2009 11:35 AM

To robin_micmac,

Gumagamit ba kayo ng radiator coolant o tubig lang?

**Xt7** · March 21st, 2009 10:33 PM

basta natatandaan ko nga 3 times naputulan timing belt at nasa 2-3 times nagpalit ng timing belt ng hindi napuputulan. unpredictable kasi e. before kami 3rd maputulan timing belt ay 20,000kms before nun,nagpalit naman kami timing belt set..

sa radiator coolant naman, minsan coolant, minsan tubig lang.

eto nga pala update sa parts.eto yung pinapabili sakn ng machine shop. pa check naman kung medyo reasonable naman. eto na.. based yan sa ATCO taft.

Qty Unit Description Unit Price

1 SET Piston Assy. W/pin 2800
1 SET Liner sleeve 3/32 SF. 2800
1 SET Main bearing Stndrd 850
1 SET Con-Rod Bearing Stndrd 550
1 SET Balancer Bushing 250
1 SET Piston Pin Bushing 250
1 SET Engine Valve In. & Ex. 1800
1 SET Overhauling gasket 2500
=11,800 ok n b for parts???

**voltscastillo** · March 21st, 2009 11:39 PM

sound reasonable...

bakit lagi nagkakaganon timing belts mo? sa isang mekaniko ka lang ba nagppunta?

baka mali yung settings ng timing mo, kasi it's either tumatalon yung timing belt at nadudulas yung ngipin, or mali yung install. kaya your 4d56 engine chews up a lot of belts. check mo din yung main pulley ng engine mo for the timing belt, sa pajero ko kasi square yung ngipin dati, tas yung ibang pulley round. so you need rounded teeth timing belts for round teeth pulleys, and square teeth belts for square teeth pulleys. else dudulas at tatalon yung timing belt.

after overhaul, have the engine checked by a mitsu engine expert. baka kasi all this time you've been running on wrong timing settings.

**mark_t** · March 22nd, 2009 01:21 AM

Originally Posted by Xt7

basta natatandaan ko nga 3 times naputulan timing belt at nasa 2-3 times nagpalit ng timing belt ng hindi napuputulan. unpredictable kasi e. before kami 3rd maputulan timing belt ay 20,000kms before nun,nagpalit naman kami timing belt set..

sa radiator coolant naman, minsan coolant, minsan tubig lang.

eto nga pala update sa parts.eto yung pinapabili sakn ng machine shop. pa check naman kung medyo reasonable naman. eto na.. based yan sa ATCO taft.

Qty Unit Description Unit Price

1 SET Piston Assy. W/pin 2800
1 SET Liner sleeve 3/32 SF. 2800
1 SET Main bearing Stndrd 850
1 SET Con-Rod Bearing Stndrd 550
1 SET Balancer Bushing 250
1 SET Piston Pin Bushing 250
1 SET Engine Valve In. & Ex. 1800
1 SET Overhauling gasket 2500
=11,800 ok n b for parts???

Ingat ka nga pala sa liner sleeve, ang dami fake ngayon pumasok galing china.
Nababasag yon liner sleeve. Kung puede baliktarin na lang baka mas mainam.
Depende yan sa call ng mechanic mo.

**mark_t** · March 22nd, 2009 01:36 AM

Originally Posted by voltscastillo

naka liners na yung block? napa-overhaul na ba yan before?

you'll need a full overhaul kit, plus cylinder liners (4). cylinder head you can buy surplus sa mga surplusan.

yan ang problema sa 4d56 eh... they don't last as long as the 4m40s and the isuzu engines. within 10 years of ownership magpapaoverhaul ka talaga. i've read somewhere na may fault yung design ng piston and piston rings ng engine na yan, kaya madaling mag-blowby.

i would go for a quality engine rebuilder. mymitsu club recommends ray sarol, but i hve no contact number. maybe you can ask around mymitsu...

isabay mo na yung calibration para bago isalpak lahat at istart tama na yung fueling system nya. too much diesel and the fuel will wash down the liner bores preventing the rings from seating properly. pag kumayod na yung rings you'll be right back where you started.

Hindi naman problem 4d56, 16 years na L300 namin at ang problema
lang yon kalawang kung saan saan nag uumpisa. 2 hilamos na ngayon
sa ibang spot naman ang kalawang. 120,000kms odo 1st hand din at naalala
ko php270.00 full tank ng diesel.

**mark_t** · March 22nd, 2009 01:48 AM

Originally Posted by Xt7

actually, ng march 5,2009 ay 11 years old na sa amin ang adventure namin. kami 1st hand.. before naputulan na kami timing belt about 3 times na yata pero wala pang overhaul talaga (1st time pa lang ngayon).. 324,000 plus kilometers na rin to. nagsimula lang ito ng magkaroon ng leak galing cylnder head gasket, na overheat kasi to dati kaya siguro natusta yung cyl gasket.. mabuti na rin at ganun kasi nakita yung kaloob looban ng makina..

no choice kami, general overhaul talaga.

as of now, binabaklas na alternator etc etc, at ibababa na rin tong makina ngayong gabi..

324000kms divide by 3

is

108000kms.

Every 80,000kms dapat palit ng timing belt, kaya pala. Me kapitbahay
ako nissan sentra eccs 370,000kms odo maganda pa, headlights, shocks
and auxillary fans pa lang napalitan. Trouble free pa rin engine.

Initially nagtataka ako na nag overhaul ka sa 324,000kms 0d0
sa diesel engine dapat half life pa lang kasi ang Auntie ko yon Odo nya
bumalik na sa 000000 ayos pa Suzuki Vitara 4at JX gasoline engine.
Nakagarahe na lang kasi 1st car nya. Ayaw nya ibenta ayaw din nya ipamigay.