And a T3-50 isn't going to make 200 whp on a diesel...ever! Maybe 150 if you rev the snot out of it.
barely drivable pig at normal speeds and RPMs
"Disengagement from practise creates theoretical hallucinations".You can crunch all the #'s you want and in theory the gt20 that is on malones car right now you would is a poor turbo to make 150whp, but it does.
Quote from: "935racer""Disengagement from practise creates theoretical hallucinations".You can crunch all the #'s you want and in theory the gt20 that is on malones car right now you would is a poor turbo to make 150whp, but it does.There is what will work, and then there is what will work best.
I'm starting to question your accuracy in interpreting compressor maps. No worries, theories are not always 100% correct. .
I don't think "200whp is gonna be nothing" with a single turbo on a mechanically injected engine, even if it isn't really a 'daily driver'. I took the liberty of using vwmike's numbers on the T3-50 map you posted. As you can see, even this 'smallish' turbo has horrible efficiency...barely 65%.And a T3-50 isn't going to make 200 whp on a diesel...ever! Maybe 150 if you rev the snot out of it. As is pointed out above, it is hard to beat the efficiency of the stock turbo, so I suggest using it as the first stage of a sequential turbo setup, with a somewhat bigger turbo as the second stage. Maybe a used one off a 12-valve Dodge Ram Cummins, or a Big 16G off a Mitsu Evo or other 4g63 engine if you want to keep it cheap.That way you can flow all the air you need with reasonable efficiency from a bit off idle to 6500+ RPMs without having a smoke-puking, barely drivable pig at normal speeds and RPMs.
Quote from: "malone" I'm starting to question your accuracy in interpreting compressor maps. No worries, theories are not always 100% correct. .I used to run the numbers the old fashioned way, but now I just go here: http://www.not2fast.com/turbo/glossary/turbo_calc.shtmlRun the numbers yourself. I still don't think you're going to wish the T4 into being efficient.I've been on the hardcore forums since it was on Network 54 although I don't post much there anymore. I know all too well what turbos they run. The big difference is that they don't generally need as much boost on their gas engines and they also need it at a higher RPM. If they did need the same amount of boost it would be much later so you are comparing apples and oranges.
Next that is a T3 50 trim map, The turbo we are going to use for 200whp is a T4OE 50 trim, compressor with a .48 T3 turbine. Not the T3 50 trim wheel, sorry if I was unclear in my last post. :oops:
The to4e50 likely will not be the t3 t4 combo we use, also we are using a .48 turbine side instead of a .38.
My exhaust ports hasn't been ported & polished yet either, and the consensus here (incl. word from Dr. Diesel) is that the 1.9 exhaust ports are poorer in design than the 1.6's exhaust ports.
Quote from: "DVST8R"Next that is a T3 50 trim map, The turbo we are going to use for 200whp is a T4OE 50 trim, compressor with a .48 T3 turbine. Not the T3 50 trim wheel, sorry if I was unclear in my last post. :oops:You guys really ought to figure out what you're doing because this was posted on the last page.Quote from: "935racer"The to4e50 likely will not be the t3 t4 combo we use, also we are using a .48 turbine side instead of a .38.I'm not really sure what it is, but I've tried to explain this over and over and I guess somehow I'm just not getting through.The T4 is not what you want - It isn't even close to efficient. I know all the cool guys over on the hardcore forums are doing it, but that doesn't mean it's the right choice on a 1.6 diesel.
I'm not really sure what it is, but I've tried to explain this over and over and I guess somehow I'm just not getting through.The T4 is not what you want - It isn't even close to efficient. I know all the cool guys over on the hardcore forums are doing it, but that doesn't mean it's the right choice on a 1.6 diesel.
Do you know where to find Holset maps? I was looking for them not too long back.