(.60/.63) Turbo guys need your help
 

I'm boostin my D16z6 with a T3 (.60/.63) and 1st gear there's no boost untill 5000 RPM and it only goes to like 1-2 psi. 2nd gear starts getting boost at like 2500 RPM and that's when I reach full boost on every other gear. This is my first time boostin so I'm not sure if this is normal for a turbo this big on a D-series or there's just a leak somewhere. Help a fellow HMT member with this. Thanks...
Setup:
-D16z6 (stock internals)
-Log mani with minor leaks
-5psi
-460cc injectors
-bov
-intercooled

Re: (.60/.63) Turbo guys need your help
 

Might be normal...

Do you spike in other gears or does the pressure hold steady?

Re: (.60/.63) Turbo guys need your help
 

check for exhaust leaks at the flanges and make sure the wastegate actuator is closing all the way. I had a problem when my actuator got stuck halfway and jammed so the flapper wouldnt close all the way. It would boost spike though too but i wouldnt get any real boost until 2nd-3rd

Re: (.60/.63) Turbo guys need your help
 

i have the exact same problem. im damn sure its my wastegate, might be the same for you.

Re: (.60/.63) Turbo guys need your help
 

Sorry guys no wastegate. I'm using a carb spring. I can't boost past 5psi even if i cut the spring a shorter. The pressure holds steady after 2nd gear and so on. So I think it might be normal for a turbo like this on a d-series. But what do you guys think.

Re: (.60/.63) Turbo guys need your help
 

Well, I think you posted it yourself. You have a larger turbo with an exhaust leak.

Re: (.60/.63) Turbo guys need your help
 

The .63 A/R exhaust housing is large for a single stick D16, not to mention the turbine trim is 70. try swapping out the .63 A/R housing for a .48 housing and it should cure some lag. keep in mind that Corky Bell says "if you don't have lag, then you don't have a real turbo"

Re: (.60/.63) Turbo guys need your help
 

Actually corky bell said, "If you don't have lag, you don't have turbo", but he didn't say anything about "real".


Ghetto D has a 63/60 on a D, and it's the whip. I had a 48/60, and it was half the whip. Get the exhaust leaks fixed and make sure all your charge pipes are still on and you should be good.

Re: (.60/.63) Turbo guys need your help
 

im fully boosted on my 2.0 by 4000... go back to the wastegate and check for leaks

Re: (.60/.63) Turbo guys need your help
 

I fixed my charge pipes so there's no leaks. I guess the exhuast housing is a bit big. A .48 might do the trick. But I think the real problem is the leak so i guess I'll go with an hf mani and sell that log mani. Thanks guys.