1990 Mitsubishi Lancer 1.8 Turbo Diesel EGT's & MPG
 

Hi. I have a 1990 Mitsubishi Lancer 1.8 turbo diesel 4d65-t with a td04-09b turbo and stock boost. What are my egt's please approx? And what is the safe egt number for this engine? And how many mpg should I get as standard?

Thank's in advance

:howdy:

the easiest way to find out your egt's is to add an egt sensor so you know how much you are getting for sure.

sounds like you should get good mpg with that little car with a diesel motor, what kind of mpg are you seein now?

I am seeing between 35 mpg & 38.

You should try and see if you can get an egt gauge and boost gauge if you havent already gotten one, and hell maybe an airdog/fass they're good for more power and extends the life of your filters like crazy

I have a boost gauge. I am seeing 9 psi and no intercooler is it good?

Pyros/EGT gauges are pretty standard and all you have to do is drill and NPT tap your ext manifold and run the thremocouple

I am going to buy an egt gauge. What safe egt number I am aiming for please?

well if i had to say, any number you see while your car is stock is safe. ur not going to be doing any towing or mods to your car?

i think it's perty much a standard number with diesels.... 1200* up to that is :": safe :": for continuious ammounts of times. short spurts over that are :": ok:": too but for not very long. remember that anything over 1250 for longer than 10-15 seconds can melt the pistons......

it can?


:humm:

there is always that possability..... remember that they are only aluminum....

hmm, ive heard that a dmax can handle 1350egts all day, but you can never trust everything you read on the internet

Aluminium pistons are the same as forged pistons??

In standard engines pistons are made of cast iron?

standard motors are cast aluminumn and some are made of forged aluminum. i'd hate to see a cast iron piston. it would be so heavy the combustion stroke would prolly not move it very well.....

the 3 types of piston that i know that they make,

cast aluminum, hypoeutectic, Forged aluminum....

here is a good read about the different types of pistons.

Forged or Cast? Piston Basics!

1200 on your egts is too hot. I'd say 900 would be about your max you'd want to push that little engine, specially with no intercooler. Where talking apples and oranges vs our engines and this little Mits engine.

true i didn't think about that especially with no intercooler..... good catch there buddy:5:

Can a turbo diesel engine detonate/pre-ignition by running short on fuel?

Nope! A diesel needs fuel for ignition. The heat transfer from the high compression is what makes a diesel run.

where abouts did you get a diesel lancer

Dump valve for diesel
 

Does a dump valve work on a diesel engine?

yes but in most cases it is not necessary

egt temps
 

I finally fitted the egt gauge. I mounted the probe/thermocouple just after the turbo and the wastegate in the elbow of the exhaust down pipe. I mounted it after the turbo because, I have read that if it were before the turbo, the probe might break and fall in the turbo causing damage. I went for a test drive and saw 300 deg Celsius. Can someone tell me what the egt's will be if I mounted the probe before the turbo. Thank you very much.

does it only read in celsius. it would be more helpful if it was in farenheit

Yes. That's the one I found.

How much should I be safe? I mounted the egt probe just after the turbo.

300* Celsius is ~572* Fahrenheit 90% of us with EGT probes put them in the exhaust manifold. you get a more acurate reading than after the turbo. i've heard people say that the temperature difference from the manifold EGT to downpipe EGT can vary from ~200* F to 600* F so that being said your real EGT could be from ~800* to ~1200* it's kind of a gamble. i'd plug the hole you just made and put it in yer exhaust manifold.

the probe usually doesnt brake.to tell you the truth of all maganzines, TV shows, and internet i have never heard or seen a EGT Probe break. but if i were you i would mount it in the Exuast manifold. but before you do it take off the manifold and then drill into it. if you dont amd drill it and you do a crappy job of cleaning up the metal shavings it will go into your turbo and kill it. that i have heard of. hope it works

Thanks for your inputs. I put it in the manifold before the turbo like you said, but I didn't get that much difference. After the turbo, the max I've seen was 350* Celsius and now before the turbo I saw a max of 450.

450* C ~ 842* F

I didn't even know they made a Lancer in 1990... :D


sounds like a good MPG car!

:pics:

I mounted the egt probe right after the turbine in the elbow downpipe. What is my safe egt?

i really dont know but anything over 1500 degress Farenheit is pushing what the the little engine can take. i know 1600 in a fullsize V-8 diesel truck is too much so a little lower and you should have your number

These would be pre turbo, its hard to tell with a pyro after turbo since the etg's can vary by 100 degrees sometimes

I have adjusted the injection pump for no smoke or if so, just a little haze. My egt goes to 350*c on normal driving and sometimes goes for 400*c if i drive it hard. A few weeks ago, i turned up the pump so much to see what it does. I saw a lot of smoke, at no boost and on boost and i was amazed how the egt climb so fast to 400*c in about a minute. And i didn't saw that much difference in performance. Then I reduced the smoke immediately so i will not make damage. So really to much smoke is excessive heat. Thanks

yeah when ur blowin alot of smoke under full throttle ur egt's will skyrocket, have u seen an improvement since u messed around with the pump?

Yes. I can feel the difference. But it is smoking a bit when no boost is applied. Can i do something to reduce the lag?

not really, the extra fuel helps spool the turbo a lil quicker, and makes more boost too