T-II Garret boost charcteristics

[Directconnection]

Guys, what rpm do you see full boost at on a stock T-II 2.2 engine with T-I Garrett turbo? My friend's car is hitting fully boost at a dismal 3,500 rpms and that's with a g-valve. Something is amiss..........

[turbovanman]

Have you checked his cam and ignition timing? compression test? thats way too high, more like Stage III turbine territory, :(

[tryingbe]

Define full boost? What PSI?

[Pat]

And what gear your testing in...

[Directconnection]

2nd gear, 3rd gear..... doesn't matter.

12psi or even 15 psi.

I tried telling them to check cam timing and look things through and get a solid foundation. So again, what is the rpm for full boost on a stock T-II? (15 psi)

[tryingbe]

Stock exhaust?

[jl93sundance]

stock head? I know I had a g-head somehow put on mine with swirl head pistons so I had to advance the ignition timing, because my compression was really low.

Edit, this was for a log t-1 car though better read the post more carefully:p

[turbovanman]

Should be around 2500 rpm.

[tryingbe]

2.5L, stock head, 5th gear, Daytona Shelby, TII Garrett with 2.5 inch swingvalve, G-valve...


2100rpm - 2300rpm (digital tach) to get 13psi

[GLHNSLHT2]

I'd say 3grand for a stock 2.2 T2 with a grainger and stock exhaust. I had basically that setup in my 87, but with a catless 2.5 side exit straight pipe exhaust. And that was about when it'd hit. I had to launch the car around 4500rpms to get it out of the hole on street tires.

[Directconnection]

Car is a factory 2.2 T-II with only 81,000 miles.

I did some minor portwork to the head, and only other mods are a catless 2-1/2" exhaust, Talon BOV and cone filter. Stock, unported exhaust manifold.

I figure it should be 2,800rpms.... sound about right?

The power isn't quite what I expect from the car at 15psi, either, compared to my old VNT at 14.5psi.

[chilort]

What's the controller again? MBC or computer, and what MBC if it is an MBC? The little five buck MBC I bought of eBay was nice until I actually started making changes.

Double check for vac leaks then double check your double check. Finally triple check the double check of the double check. I had a stock intake to waste gate line with a leak. It took my dumb a$$ about a year to find it.

Sounds a little high to me though, especially if you are checking in multiple gears.