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Hi all, I'm a little dispointed with my turbo set up .Fully rebuilt 1HZ deisel all turbo internals TD05H turbo from DTS is just not pulling down low like others do. Is there any secerts or light on this topic to help me out . I'v even looked into another turbo but just don't know what sort i.g t3, gt28, schwitzer and what a/r numbers are best suited to spool low 1000rpm till 3500rpm.
benny4x4 wrote:Hi all, I'm a little dispointed with my turbo set up .Fully rebuilt 1HZ deisel all turbo internals TD05H turbo from DTS is just not pulling down low like others do. Is there any secerts or light on this topic to help me out . I'v even looked into another turbo but just don't know what sort i.g t3, gt28, schwitzer and what a/r numbers are best suited to spool low 1000rpm till 3500rpm.
Always a hard one sizing turbos, garrets sight has some good info and plenty of turbo maps, My 2F although not diesel has pretty much the same rev range topping out at 5000rpm and at 4.3lt around the same size cc.
My GT30 82R works well through the rev range but not listed on Garretts site. The small 0.63 Turbine housing spools up quickly while the large compressor housing deals with the air required for larger cc's on the other side.
The graph below is mine and a Nissan TD42T with a DTS turbo.
As you can see in the bottom graph mine in red spools faster than the DTS although I only run 9psi the TD42T runs 11.
BB turbos spool quicker. You can also see the TD42 just starting to drop off as it runs out of legs where as mine does not.
Diesles are not the same as petrols I know but a 2F is not that dissimilar in cubes and rpm. Oh and are Diesels supposed to have more torque
The big difference between petrol and diesel turbocharging is exhaust heat. Because petrols run hotter exhaust they can spool bigger turbos for the same size engine.
Unfortunately I haven't worked out how to cross reference mitsubishi turbo size to garrett turbo size. But a T28 with a 0.64 A/R turbine housing would be a good starting point. I can't tell you how it will compare to your current model.
benny4x4 wrote:Hi all, I'm a little dispointed with my turbo set up .Fully rebuilt 1HZ deisel all turbo internals TD05H turbo from DTS is just not pulling down low like others do. Is there any secerts or light on this topic to help me out . I'v even looked into another turbo but just don't know what sort i.g t3, gt28, schwitzer and what a/r numbers are best suited to spool low 1000rpm till 3500rpm.
you dont mention your exhaust. What have you done with it. the biggest difference on mine was from changing to a good free flowing exhaust. Turbo spooled lower, was more responsive right through the rev range and had better top end. win,win on the exhaust
KiwiBacon wrote:The big difference between petrol and diesel turbocharging is exhaust heat. Because petrols run hotter exhaust they can spool bigger turbos for the same size engine.
Unfortunately I haven't worked out how to cross reference mitsubishi turbo size to garrett turbo size. But a T28 with a 0.64 A/R turbine housing would be a good starting point. I can't tell you how it will compare to your current model.
benny4x4 wrote:Hi all, I'm a little dispointed with my turbo set up .Fully rebuilt 1HZ deisel all turbo internals TD05H turbo from DTS is just not pulling down low like others do. Is there any secerts or light on this topic to help me out . I'v even looked into another turbo but just don't know what sort i.g t3, gt28, schwitzer and what a/r numbers are best suited to spool low 1000rpm till 3500rpm.
you dont mention your exhaust. What have you done with it. the biggest difference on mine was from changing to a good free flowing exhaust. Turbo spooled lower, was more responsive right through the rev range and had better top end. win,win on the exhaust
benny4x4 wrote:Hi all, I'm a little dispointed with my turbo set up .Fully rebuilt 1HZ deisel all turbo internals TD05H turbo from DTS is just not pulling down low like others do. Is there any secerts or light on this topic to help me out . I'v even looked into another turbo but just don't know what sort i.g t3, gt28, schwitzer and what a/r numbers are best suited to spool low 1000rpm till 3500rpm.
you dont mention your exhaust. What have you done with it. the biggest difference on mine was from changing to a good free flowing exhaust. Turbo spooled lower, was more responsive right through the rev range and had better top end. win,win on the exhaust
I have full 3'mandrel bent with 3'dump no muffler just straight through
Look up the air worx PDF for their turbo do the calcs for your motor then you'll have the base numbers to use with the compressor maps.
Then select the turbo based on the best compressor map for your numbers.
it's not too hard really, most turbos will be the same across different brands bar the name, after all there's really only 3 makers of turbos the rest are just turbo tuners.
zagan wrote:Look up the air worx PDF for their turbo do the calcs for your motor then you'll have the base numbers to use with the compressor maps.
Then select the turbo based on the best compressor map for your numbers.
it's not too hard really, most turbos will be the same across different brands bar the name, after all there's really only 3 makers of turbos the rest are just turbo tuners.
There are more than 3 turbo makers. Each makes thousands of different parts which can be assembled into millions of different turbochargers, each performing differently.
Good luck finding any two turbos from different makers that perform the same.
Benny, the compressor A/R doesn't matter much, you just get what you're given as you usually don't have a choice.
The T28's with the 0.64 A/R turbine (hot side) often have a 0.6 A/R compressor cover. I know mine does.
The T28 with the 0.86 A/R turbine also in my parts bin has a 0.8 A/R compressor cover.
zagan wrote:Look up the air worx PDF for their turbo do the calcs for your motor then you'll have the base numbers to use with the compressor maps.
Then select the turbo based on the best compressor map for your numbers.
it's not too hard really, most turbos will be the same across different brands bar the name, after all there's really only 3 makers of turbos the rest are just turbo tuners.
There are more than 3 turbo makers. Each makes thousands of different parts which can be assembled into millions of different turbochargers, each performing differently.
Good luck finding any two turbos from different makers that perform the same.
Benny, the compressor A/R doesn't matter much, you just get what you're given as you usually don't have a choice.
The T28's with the 0.64 A/R turbine (hot side) often have a 0.6 A/R compressor cover. I know mine does.
The T28 with the 0.86 A/R turbine also in my parts bin has a 0.8 A/R compressor cover.
My understanding (which is limited) is that the A/R of compressor compared to A/R of turbine will determine the performance characteristics of a turbo, at least to asome degree.
eg, there is a big garret turbo on ebay at the moment, compressor A/R .64 vs turbine A/R of 1.16, wouldnt something like this boost very high in the rev range due to large turbine housing? and how does the small compressor A/R affect its boost/airflow characteristics?
80's_delirious wrote:
My understanding (which is limited) is that the A/R of compressor compared to A/R of turbine will determine the performance characteristics of a turbo, at least to asome degree.
eg, there is a big garret turbo on ebay at the moment, compressor A/R .64 vs turbine A/R of 1.16, wouldnt something like this boost very high in the rev range due to large turbine housing? and how does the small compressor A/R affect its boost/airflow characteristics?
There is some logic to that.
The compressor cover is matched with the compressor wheel to give the desired result. So the housing A/R can give you some idea of what's under it, but be prepared for surprises.
Small compressor A/R's seem more suited to higher pressure ratios, the turbine A/R in conjunction with the wheel diameter can give you a rough way to size turbos across different brands.
Most turbo's i'v seen and been lookin at are for i.g hotside .86- front comp .70, hotside .63- front comp .50, i have seen t3 with hotside .63- turb comp .60. I'm still stumped on which one with suit me the best for towing but i seem to be steering towards the t3 turbo with .60 turbo comp with .63 hotside. I would like to know what you all think as i want no lag and boost to start early as possible and reach to 3-3500rpm
You need to look at compressor maps, working out airflow needed from the engine. Different size compressore wheels, trims and turbine wheels all make it harder to match and find the right one.
Turbine a/r's are a tuning device. Some turbos may have up to 5 different housings. Turbine inlet pressure needs to be measured to find the right one as against how quickly it gets on boost.
Look at the turbobygarrett website, check out the tech features and then be prepared to try a couple.
Or you by one from someone who knows that already works to what you want.
Andy
www.diesel-tec.com.au Ph 03 9739 5031
Ball bearing turbo upgrades for factory turbo vehicles. Got a diesel question just ask.
Home of the twin turbo shorty and many 150rwkw+ patrols.
zagan wrote:Look up the air worx PDF for their turbo do the calcs for your motor then you'll have the base numbers to use with the compressor maps.
Then select the turbo based on the best compressor map for your numbers.
it's not too hard really, most turbos will be the same across different brands bar the name, after all there's really only 3 makers of turbos the rest are just turbo tuners.
There are more than 3 turbo makers. Each makes thousands of different parts which can be assembled into millions of different turbochargers, each performing differently.
Good luck finding any two turbos from different makers that perform the same.
Benny, the compressor A/R doesn't matter much, you just get what you're given as you usually don't have a choice.
The T28's with the 0.64 A/R turbine (hot side) often have a 0.6 A/R compressor cover. I know mine does.
The T28 with the 0.86 A/R turbine also in my parts bin has a 0.8 A/R compressor cover.
It's airwerks turbos by borgwarner a german company which tune up IHI turbos look at their pdf catalog to get the base numbers you need to see what compessor map(turbo) suits your engine, a dyno is better but won't matter.
As for brands there's Garret, IHI (mitsubishi), and another brand UD (nissan trucks now sold off) had their own turbos but that's all I know, take a look around easy to find out.
The better known "brands" don't make their own turbos, sure they make parts but that's it.
HKS use garret turbos
Airwerks use IHI turbos
Most use garret because garret have around 75% of the turbo market.
As for comparing turbos across brands easy... look up the compessor maps but you'll need your base numbers other wise your just doing pot luck matching.
Dzltec wrote:You need to look at compressor maps, working out airflow needed from the engine. Different size compressore wheels, trims and turbine wheels all make it harder to match and find the right one.
Turbine a/r's are a tuning device. Some turbos may have up to 5 different housings. Turbine inlet pressure needs to be measured to find the right one as against how quickly it gets on boost.
Look at the turbobygarrett website, check out the tech features and then be prepared to try a couple.
Or you by one from someone who knows that already works to what you want.
I'l take a look at that thanks, Also what do you think about the TD05-H mitsubishi turbo's that DTS bolt onto the 80 series, All i could get out of them is that the rear exhaust is 10cm Not messured in a/r
zagan wrote:Look up the air worx PDF for their turbo do the calcs for your motor then you'll have the base numbers to use with the compressor maps.
Then select the turbo based on the best compressor map for your numbers.
it's not too hard really, most turbos will be the same across different brands bar the name, after all there's really only 3 makers of turbos the rest are just turbo tuners.
There are more than 3 turbo makers. Each makes thousands of different parts which can be assembled into millions of different turbochargers, each performing differently.
Good luck finding any two turbos from different makers that perform the same.
Benny, the compressor A/R doesn't matter much, you just get what you're given as you usually don't have a choice.
The T28's with the 0.64 A/R turbine (hot side) often have a 0.6 A/R compressor cover. I know mine does.
The T28 with the 0.86 A/R turbine also in my parts bin has a 0.8 A/R compressor cover.
It's airwerks turbos by borgwarner a german company which tune up IHI turbos look at their pdf catalog to get the base numbers you need to see what compessor map(turbo) suits your engine, a dyno is better but won't matter.
As for brands there's Garret, IHI (mitsubishi), and another brand UD (nissan trucks now sold off) had their own turbos but that's all I know, take a look around easy to find out.
The better known "brands" don't make their own turbos, sure they make parts but that's it.
HKS use garret turbos
Airwerks use IHI turbos
Most use garret because garret have around 75% of the turbo market.
As for comparing turbos across brands easy... look up the compessor maps but you'll need your base numbers other wise your just doing pot luck matching.
The Dts kits are matched well to each application in a standard setup. However when people want more, they don't match up to a properly sized ball bearing setup.
BB turbos allow for quicker spool up rates, are able to produce more boost efficiently and will deliver more air. They just don't bolt up to a kit off the shelf very easily.
Andy
www.diesel-tec.com.au Ph 03 9739 5031
Ball bearing turbo upgrades for factory turbo vehicles. Got a diesel question just ask.
Home of the twin turbo shorty and many 150rwkw+ patrols.
Could you tell me what a good size is fir my 1hz, it's had a 3L grind crank put in and a t1200 cam as well as 1 hdt conrods and pistons all fully balanced. Fom what i'v been told that a turbo with front housing .48 and rear comp housing .69 works well with quick boost, i think safari use this combo in a t3????? Am i wrong? Is this a good combo???????????
Mate used to run a CT26 turbo and fuel pump from 1HD-T engine on his comp truck 1HZ with DTS top-mount I/C, so I would start there. Was very responsive and but the torque curve was quite peaked.
Wanting something that spools up from 1000rpm might be a little optimistic also.
.Fully rebuilt 1HZ deisel all turbo internals TD05H turbo from DTS is just not pulling down low like others do. Is there any secerts or light on this topic to help me out 
. I'v even looked into another turbo but just don't know what sort i.g t3, gt28, schwitzer and what a/r numbers are best suited to spool low 1000rpm till 3500rpm. 
