ahaha look what i have started. all this to make a wank factor sound come from a hilux diesel.
Little useless fact for everyone, as i work for a Kia Dealership.
Test driving the new Kia Soul CRDi the other day with the computer on it, just looking at specs and what not. at an idle they make 15psi of boost and full open throttle they make a max of 35psi. all this from a little 1.5 VGT.
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BOV on a 2.8 hilux.
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Dont mean to be rude but i call bullshitt
That is pointless, a hugely strengthend motor for no reason. A diesel as they are run huge compression, an atmosphere being 14.rah rah psi, your then throwing another 2 atmospeheres into the motor. For no sensible reason as it is a stock get around work car/ute/van, huge heat levels would need to be dealt with just to bring it into something sensible
For something to be producing 15psi at idle it would not have the legs to make 35psi efficiently throughtout the rev range, 15psi is just over an atmosphere as mentioned that means from nothing it is producing enough energy to make 100% what a n/a would make.
Most turbos on diesels run 0 on idle, and dont have the legs to run 15-20psi throughout the rev range, A variable vein turbo "could" do it but would still be unrealistic, especially for kia.
If im wrong then my bad and i take it all back
That is pointless, a hugely strengthend motor for no reason. A diesel as they are run huge compression, an atmosphere being 14.rah rah psi, your then throwing another 2 atmospeheres into the motor. For no sensible reason as it is a stock get around work car/ute/van, huge heat levels would need to be dealt with just to bring it into something sensible
For something to be producing 15psi at idle it would not have the legs to make 35psi efficiently throughtout the rev range, 15psi is just over an atmosphere as mentioned that means from nothing it is producing enough energy to make 100% what a n/a would make.
Most turbos on diesels run 0 on idle, and dont have the legs to run 15-20psi throughout the rev range, A variable vein turbo "could" do it but would still be unrealistic, especially for kia.
If im wrong then my bad and i take it all back
BBP Offroad
Boondall Backyard Performance
They call me the MR. throw cash at shiz til its comp specccccc
Boondall Backyard Performance
They call me the MR. throw cash at shiz til its comp specccccc
That be good, speak to them and ask them why on earth they went with a turbo that runs so much positive pressure on idle, excess heat for no reason other than a little fuel economy which imo is just asking for problems.
BBP Offroad
Boondall Backyard Performance
They call me the MR. throw cash at shiz til its comp specccccc
Boondall Backyard Performance
They call me the MR. throw cash at shiz til its comp specccccc
not uncommon tho that sound on the extrem range.
i'll bet the little kia runs very low compession.
nissan D40 is 15:1 compession, i think runs 5psi at idle and max of around 20psi. variable turbo can throw the rule book out the window.
the high boost low compession enables to burn lots off fuel for the motor size. that way you can have a smaller lighter motor in a smaller vechile with decent power output.
i'll bet the little kia runs very low compession.
nissan D40 is 15:1 compession, i think runs 5psi at idle and max of around 20psi. variable turbo can throw the rule book out the window.
the high boost low compession enables to burn lots off fuel for the motor size. that way you can have a smaller lighter motor in a smaller vechile with decent power output.
There are electronic blowoff valves avalable for diesels but they are expensive and realy not much point.
A front mount intercooler could also fall in the waste of time bin
on a standard diesel with a small turbo
A front mount intercooler could also fall in the waste of time bin
on a standard diesel with a small turbo
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bollocks.
bigger radiator may drop engine temp but it won't drop EGT's. don't confuse engine temp with exhaust gas temps.
some of the these stock engine have turbo outlet temps of over 100 degrees C. any cooling is an advantage as long as th gain from cooling offsets the bit of lag the extra pipes make.
bigger radiator may drop engine temp but it won't drop EGT's. don't confuse engine temp with exhaust gas temps.
some of the these stock engine have turbo outlet temps of over 100 degrees C. any cooling is an advantage as long as th gain from cooling offsets the bit of lag the extra pipes make.
Bollocks Diesels dont run high exhaust temps any way so a cooler engine intake temp will reduce every thing
Oh so your say a high engine temp wont efect any thing what a load of rubbish. Running a front mount on a diesel enging will have very limited in crease in anything and would be off set by the amount of lag thats created
Oh so your say a high engine temp wont efect any thing what a load of rubbish. Running a front mount on a diesel enging will have very limited in crease in anything and would be off set by the amount of lag thats created
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a front mount cooler (unless its stupidly big) will not cause a lot of lag on a diesel as turbo are generally set up to boost at low revs and boost pressure is not blown off between gears, so the front mount will act as a plenum chamber.
An intercooler will lower temps, but on its own may not see any gain in power unless the engine is already being overfueled. The cooler air lets you add more fuel to make more power without increasing EGTs overall.
If a diesel is overfueled it will see very high EGTs, I have seen mine rocket from 500c to 850c + within seconds and still climbing fast under hard acceleration while fiddleng with the tuning
An intercooler will lower temps, but on its own may not see any gain in power unless the engine is already being overfueled. The cooler air lets you add more fuel to make more power without increasing EGTs overall.
If a diesel is overfueled it will see very high EGTs, I have seen mine rocket from 500c to 850c + within seconds and still climbing fast under hard acceleration while fiddleng with the tuning
Sorry man well have to disagree even a top mount intercooler will create lag and enough to be slightly annoying ( I have dyno graphs to show it to)80's_delirious wrote:a front mount cooler (unless its stupidly big) will not cause a lot of lag on a diesel as turbo are generally set up to boost at low revs and boost pressure is not blown off between gears, so the front mount will act as a plenum chamber.
An intercooler will lower temps, but on its own may not see any gain in power unless the engine is already being overfueled. The cooler air lets you add more fuel to make more power without increasing EGTs overall.
If a diesel is overfueled it will see very high EGTs, I have seen mine rocket from 500c to 850c + within seconds and still climbing fast under hard acceleration while fiddleng with the tuning
A front mount is worse and i kind of get what your saying about it acting as plenum chamber but acts more like a dam blocking the turbo from boosting quickly as it has to force all the extra air throught the line to the engine (A BOV in a petrol engine allows this to escape) an intercooler will not all ways lower intake temp
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they can easily run high enough EGT's to melt pistons.beinthemud wrote:Diesels dont run high exhaust temps any way so a cooler engine intake temp will reduce every thing
Oh so your say a high engine temp wont efect any thing what a load of rubbish. Running a front mount on a diesel enging will have very limited in crease in anything and would be off set by the amount of lag thats created
high engine temp may seize pistons etc but it won't cause big increases in EGT's and melt pistons. high EGT's can cause increase engine temp but not the other way around.
excessive EGT's will kill a motor even if its stone cold.
typically the cooler intake air and increase in exhaust flow due to it, can off set the lag. however if intercooler is badly designed it certainly will cause lag.
besides, these are 4x4's not race cars
gotta love itCourse they can melt tweak ,All most all intercoolers will create lag its just the amount that verys if were saying the engine is the same the turbo is the same then any good or shiit intercooler will create lag ,
If you tripple the distance the air has to flow to the engine and and at least double the size of the pipping which in most cases has been done then anyone for lag.
High engine temps can seize pistons is and understatement
A 5dec engine temp increase above operating temp in a F1 race car can destroy an engine
so your saying if engine temp increases to an excesive amount as long as EGTs dont increase then your engine will be fine
If you tripple the distance the air has to flow to the engine and and at least double the size of the pipping which in most cases has been done then anyone for lag.
High engine temps can seize pistons is and understatement
A 5dec engine temp increase above operating temp in a F1 race car can destroy an engine
so your saying if engine temp increases to an excesive amount as long as EGTs dont increase then your engine will be fine
Last edited by beinthemud on Mon Jun 08, 2009 8:26 pm, edited 1 time in total.
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I think what Tweek is saying is. High Engine Temp is not going to directly affect EGT's, they will increase but not as dramatically as the engine temp has. only a small percentage.
I completely agree with any setup of intercooler causes turbo lag. its fundermental mechanics. the longer intake/runners you have the bigger lag you're going to get. Whether or not its noticeable is another.
Ash
Whereas a high EGT's will cause a rinse in engine temp obviously because the combustion process is running hotter than usual. aswell as the turbo is getting hotter and intake air temp is hotter aswell.high engine temp may seize pistons etc but it won't cause big increases in EGT's
I completely agree with any setup of intercooler causes turbo lag. its fundermental mechanics. the longer intake/runners you have the bigger lag you're going to get. Whether or not its noticeable is another.
Ash
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For anyone wanting a "sick" noise when they change gears, if they havnt got the turbo bark im happy to post a cd for $200 which will have a bov noise over and over again for the length of 80 mins
lmfao....@ this .......bov ??? isnt he the norwegien god of unneccesary engine modifications.......
For anyone wanting a "sick" noise when they change gears, if they havnt got the turbo bark im happy to post a cd for $200 which will have a bov noise over and over again for the length of 80 mins
lmfao....@ this .......bov ??? isnt he the norwegien god of unneccesary engine modifications.......
zoook wrote:--------------------------------------------------------------------------------
For anyone wanting a "sick" noise when they change gears, if they havnt got the turbo bark im happy to post a cd for $200 which will have a bov noise over and over again for the length of 80 mins
lmfao....@ this .......bov ??? isnt he the norwegien god of unneccesary engine modifications.......
Manuels= 4wd,cars,bikes,guns,trucks,race cars
Automatics=washing machines,dish washers,fridges
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