part 2 turbo theory
class is back in session and I grabbed a soda and downed a few tacos, looked under the hood my car and checked out that precision turbo down under that tubular manifold. Back on the topic now.
where we yes I had something to say, hey V8's are slow man, not all v8's are slow just remember that. My buddy has a TT chelleve that both of us build. it a v8 and it scares the pants off me. When the car hooks shut up and hold on. But anyways that has turbos that we love so back to the 16g and The garret turbo discussion that we want to read about. Now that we made 300 whp on a 16g with a few mods, some people make more dont get me wrong, some people try the 20g, bigger badder TD06 compressor housing bigger exhaust housing flows some serious air pretty close to the common bolt on 50trim. with that 20g some good and bad power can be made. But people like to say why? why by a 20g why buy a 50 trim. People say why. Well I have been through these turbos and watch them all dyno numbers of times and I can tell you what they make for power. If your at the 20g mark and want to upgrade You might want to start to consider a new
Turbo 20g plus
External waste gate setup 38 or bigger
2g manifold ported is nice
nice o2 housing
and a intake we problay a 3 inch inlet
and new feed and return lines, stainless
now not all the parts above are needed but I suggest them and you ask why. I say this because I have been there done that and it broke so I spent the money and did it right the second time, not the first like I want everyone to read this to due. Do it right the first time and have fun with your new turbo and not have to fix it every day. Now that the Mitshu turbo is out of your mind and you want a big bolt of series turbo you see .63 a/r or .83 a/r Dont get scared. never be scared this is just another way of sizing the exhaust housing in garret term think for a second
Mitshi Terms
Small B I G
6cm 13cm
Garret terms
small BIG
.43a/r 1.15 a/r (What the TT chevelle has) Ha Ha
now for the most of us we fall in the middle or this category
like the .63 a/r class. For example my precison has a .63 a/r and it is a 60trim. It has alright spool time and the turbo huffs some good air. Now you think I want to flow alot of air, but wait you also want a good spool up time. you always need to give a little to get a little in life we cant have the best of all the worlds. But wait they invented dual ball bearing garret turbos. Yes there big, yes they flow alot and the spool is good. That is why you can take a GT35R with a .83 a/r exhaust housing and have it spool pretty good even the the a/r is so high. But most of us dont have the money for a 35r, at least I dont so I deal with the lag. It is okay.
there is so much more I want to write about like clipping the turbo wheels and ceramic blades and how the turbos work in newer FORD yes I said FORD turcks. Didn't you hear hear. The ford truck turbos are amazing Oh u dont know. Well on your way to work do me a favor one favor I ask of all you people of read this article that took me hours to write and I promise there is more to come.
Just do this when you see a new FORD diesel truck roll down your window and listen, then due the same to a Cummins diesel and listen. And write back to me. and tell me what you hear.
Thanks for reading, and if people want more write in and say you want to hear from me.
Mark
|