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since u use the oil catch can .. is your intake n turbo diesel clean? n inter cooler linescutthroatInt wrote:Good morning fellas!!!.. and what a good morning it has been!
just an update,
initially when i installed the boost gauge i could swear i was getting 8 psi.
for the last couple days the max i was getting was 6psi.. and it takes a very very long time to reach that.
so bright and early this morning after suspicion that my last mechanic did interfere with his father head and adjusted my waste gate, i went ahead and adjusted the rod a couple threads up to where i think i saw the original threads marked.
i also used an air compressor and pumped some air into the actuator to make sure it was activating and it was.
I drained my oil catch can which collected bout half a table spoon of oil.
(cheap thing no good for real yes, the inlet and outlet nipples of this can is attached to the can via an allen bolt and some sealant. i have to re seal this as its leakin at this point.)
it seems as tho my wastegate actuator on the 4d56 was adjusted wayyy to low.
At idle after a few mins of warm up, i revved the engine and the needle happily climed to 4-5 psi..
it never did that before...
and frankly i thought it was strange as i kno gasoline turbo engines do not build boost at idle and in neutral.. atleast one that i witnessed personally.
so i packed up all my tools and locked up garage and went for my test drive, sando tech flyover to claxton bay flyover.
engine builts boost almost instantly when driving.
i still cannot tell rpm as i havnt gotten my tacho to hook up yet. (need help on this)
the adjustment i made on the actuator rod sent boost straight up to 9psi on throttle ... and i can get that on all 5 gears.
on the highway it holds that pressure without dropping off... so right now its set at 9psi.
i really want to know what is the stock boost setting on an original pajero/l200 set up to ensure im not "overboosting" right now.
i;ll hav to give it an engine wash and monitor things now cos im seeing oil all over the place.. im hoping its the leakin oil catch can throwing oil all over.
if there is safe room to raise more boost i think i;ll just adjust the wastegate some more and not install the boost controller.. atleast not untill i do install the intercooler.
accord man, for the intercooled engine in the pajero, i tink you should adjust that first before the controller as well... unless assuming the max you'll get off the wategate adjustment is 10psi after which u will not be able to get any more boost with a stock waste gate.
i will monitor things for a week or so.. i do a lot of mileage so will be able to quickly ascertain performance.. fuel mileage etc then consider turning it up a few notches if atall.
oh, forgot to mention, smoking was reduced considerable... on throttle where i wud normally look in my side mirror to see if i dusting for mosquitoe, there was no smoke.
i havnt tinkered wit the fuel pump..
atleast for now it seems like all it needed was more air flow to mix wit the diesel.
totally different driving feel im getting now.. van is very lively and responsive...
think i need to change pads from OHK to sumting different... im mashing more brakes now lol
and im getting brake fade.. and a slight spongy feel.
fluid tops, lines tops, brakes master cylinder kit changed recently, rear shoes are OHK also and in good condition and tension.
any recommendations?
only down side, my engine temp went up a tad bit faster. but i kno it has to do with the increased load its getting and the immensely hott midday sun!
so now back on the agenda, consideration of upgraded radiator as well or twin electric fans which im leaning towards for some reason.
sounds like a mazda bt50 wl engine.. same symptoms.. i advise clean radiator n water pump n get original thermostat.. cause without it ..d fuel economy drops n temps fluctuate more rapidlymadcoolieboy wrote:stock boost is 8-10 psi on the 4d56t......remember you cannot cross 15psi with a stock manifold eh guys......relief valve opens. unless yuh play mad an take out the valve and blank the hole with a huge bolt.. btw ah have a 4d56t block put down(no crank) just block,sump,pistons,rods if anybody want one.
all 4d56's have overheating and thermostat issues. i advise u remove your thermostat.
that is illegal to do in foreign . pollution. run it back to intake .. so turbo could pull it in n recycle n create a vacuumcutthroatInt wrote:I bought boost gauge, oil catch can, boost controller today.
installed oil catch can and boost gauge.
Im gettin 8psi max right now.
what is the stock boost setting on a 4d56T (assuming pajero/L300 engine)
i want to set back my OEM wastegate to where it should be.. before i install the controller and start diggin up.
Accord man, u mentioned that you have a modified catch can to install? what is modified bout it and why? is it something specific for diesel engines?
from tappet cover, i run hose to can.. and i did not run a return hose back to intake... i put a small air breather filter. but alot of air is venting tru that small filter now and making one set ah noise... and sort of fumzing up the place. when the engine shuts off i get about 3-5 sec hissing sound through the filter. so from a previous post in another thread, backpressure seems to be ok on the engine.
i guess i just hav to monitor oil accumulation in the can.
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