Efficiency barrier, Turbo People!

[justinray]

At what psi are you considered to be overspinning a sidewinder? How much should I push it? They send it out with the WG calibrated to ~9 psi, and I'm sure thats not the upper limit of the turbo map, I couldn't see them sending it out maxxed. How far can I go before heating the air significantly?

 

[hesutton]

I saw a loss in power on the dyno when boost was over 12-13 psi.

Heath

 

[Dave Barbieri]

Heath, you're intercooled, so I would bet that point occurs at a lower psi for non-intercooled motors. I'll be installing an ATS unit on my 6.9 when I get it together, so it's gonna be interesting to see what folks have to say here.

 

[justinray]

It ould be a lot easier to tune this thing if I could find a turbo map for the dang thing.

 

[wmoguy]

It ould be a lot easier to tune this thing if I could find a turbo map for the dang thing.

If you can't find one, put a drive pressure gauge on your setup. If you see more than a 1.5:1 drive pressure it's safe to assume the turbo is beyond it's efficiency range

 

[Dieselcrawler]

when i ran mine, the first 2 runs i left the WG hooked up. last run i unhooked it. boost jumped from 8 to 12 psi. made more power too at 12 psi.

 

[FordGuy100]

My bet is anything over 13-14psi is a loss. The 60-1 wheel Russ dies for the ATS turbo's looks like it should do 18-20psi on the upper end before it's out of the map (20psi at higher rpms might push it off). TP38 map looks almost identical to a 60-1 map but they have a higher pressure capability than the 60-1 but flow about the same lb/min of air.

 

[hesutton]

Heath, you're intercooled, so I would bet that point occurs at a lower psi for non-intercooled motors. I'll be installing an ATS unit on my 6.9 when I get it together, so it's gonna be interesting to see what folks have to say here.

Nope, this was on the F250. The F350 is intercooled, the F250 isn't.

Heath

 

[Black dawg]

The problem is that you cant just say 15psi is too much. 15psi at 2k and 15psi at 3k are totally different places on a map usually.

Usually lots of boost at low engine speed (low NA airflow) will put these turbos off the map quicker than high rpm and high boost.
anybody have a map for this turbo?

 

[FordGuy100]

The consenses that I read was the ATS turbo's use a H-trim T04B compressor. Banks uses a TD06 compressor, although I dont know which model (20G I believe, but cant really confirm).

Besides the 60-1 T04B, there is also a 62-1 T04B compressor which flows more.

 

[jaluhn83]

Banks WG is a mitsubishi TE06H, will see if I have the trim info somewhere.

 

[justinray]

Yeah, I know what you're saying about the early boost vs late boost, I may just have to play with it and watch my egt's.