.90ar vs 1.0ar
- Thread starter mike diesel
- Start date
I would get rid of the wastegate totally for now. Helping the brother in law with his twin kit on his ford 12v swap currently. We ended up deleting the turbo smart gate to get some issues resolved ourselves. Just helps narrow things down a bit.
Went to install my drive pressure gauge today...the worthless piece of shit Allen head plugs ppe uses on their manifolds just strip right out. We will see if i can even get it out.
Good hell! Not an Allen wrench in this world that could have gotten that out. Trusty easy out made quick work.
Just went out for a test drive.
70 psi drive to 60 psi boost. 1.16:1 ratio, which is why I guessing my gate is useless. There basically isn't any excess drive pressure to bleed off. This is even with the .90ar turbine housing on the high pressure turbo.
70 psi drive to 60 psi boost. 1.16:1 ratio, which is why I guessing my gate is useless. There basically isn't any excess drive pressure to bleed off. This is even with the .90ar turbine housing on the high pressure turbo.
That is a very good ratio. I am surprised you arent making more drive pressure than that with a tune that size.
I'm guessing my 16:1 compression ratio is playing a factor here as well. I'm hoping tightening up the atmo to a 1.0 housing will make a nice difference.
It will wake it up big time. Did you happen to check exhaust pressure between stages? I would be interested to see what it is at the y2ks turbine inlet. Is there any more fuel available as well? Or is your injector setup maxed?
I didn't check between turbos. I'm going to pull my gate off so I suppose I could weld a bung in while the pipe is off. I am about at my fueling limits...2 stock pumps on 2700us tune is dropping to about 24000 psi. Just about out of pulse width and pump.
I'm about 99% sure that this turbo uses a gt55 turbine housing so I am waiting for turbonetics to get back to me to confirm.
1.0 will make a huge difference on that "gt55" turbine... That turbine/housing setup will still flow way more than a s400 1.32 a/r for sure and more than a gt47 1.39 a/r I believe! :thumb:
I wouldn't say it is lazy, but it definitely doesn't spool like stock.
I got an email back from turbonetics, they claim the 1.23ar housing is as small as "they" make. He didn't mention anything about a gt55 turbine being interchangable. I wish I had a housing sitting here I could try out.
I know that since I run a 472 with two 366s. Before I made a point I wanted to know how you felt they drove, spooled and smoke levels. Your boost number isn't high. Barely getting into semi efficient. It doesn't seem like a good match with what you are experiencing.
It seems to drive pretty well in my opinion, it just doesn't quite come to life like i was expecting.
Well since apparently they do not offer any other turbine housing for that charger, I'll be on the hunt for a different setup.
Well since apparently they do not offer any other turbine housing for that charger, I'll be on the hunt for a different setup.