|
|
Post by turbobug on Jun 17, 2020 16:16:16 GMT -5
I know very little about turbos but I think I have narrowed down my search for turbo replacement to either the GT3076r or the GTX 3071r. The problem is I don't know:
1. If one of these would be best for quick spool
2. If the GTX is oil and water fed
3. Why does the GTX cost so much more?
4. Which turbine housing to use 48ar 63ar or 82AR
5. Which turbine outlet style the 2.5"v, 3"v or the 4 bolt
6. Which compressor housing the 2" out or the 2.5" out
The more I know the more confused I get. If anyone can give me some sirection that would be great. The car has been sitting for months with a bad turbo and I am itching to get it back on the road.
|
|
|
|
Post by Stinger on Jun 17, 2020 19:43:31 GMT -5
What's your head/cam/injector/ECU setup?
What's your power goal?
Are you currently replacing a stock turbo? If so, is it a Garrett / AiResearch or an IHI Ishi Warner? You can look at the words on the compressor housing to know.
|
|
|
|
Post by turbobug on Jun 18, 2020 10:34:28 GMT -5
The head is stock basically
I have a Cam kit from Esslinger installed: 2277 Cam, 2297 Roller Rocker Arms, 2283 Retainers, 3207 springs, 2565 valves, 2561 valves, Hydraulic Lifters
Injectors are 85 lbs
PIMP ECU
I am leaning towards the GTX3071r with 2" compressor out, T3, .63a/r, and 3" v band outlet.
I would like to get 300hp
I have a stock exhaust manifold, and stock air intercooler
I am considering having the exhaust manifold ported out so I can keep the plumbing relatively aligned the way it is now. I don't know of a good header that keeps the turbo alignment in a stock position. Does anyone know who offers either a ported exhaust manifold or header that keeps things in basically the stock position?
|
|
|
|
Post by Stinger on Jun 18, 2020 13:12:42 GMT -5
GT is a cast compressor wheel, GTX is a fully machined compressor wheel. The machined version is thinner and more precise so it is a little more efficient. It makes about 5% more power over the GT at the same boost level.
If you're using the stock intercooler then you need the 2" outlet for sure (though it will likely still not line up all that well as the turbo will be physically larger).
The .63 housing will spool about 300rpm sooner than the .82.
BoPort will port the stock manifold but it's not cheap. The stock manifold works pretty well in stock form (or with minor porting just at the 4 bolt flange to open up the hole to the size of the turbo inlet). This is especially true at your power target.
V-band is better than the 4 bolt as it's easier to work on.
The thing you need to consider is that you need an internal wastegate if using the stock manifold so you have to make sure you get an exhaust housing with an internal gate.
The last thing is that there are more basic Garrett turbos that aren't in the GT/GTX series that are half the price of a GTX (unless you're looking at knockoff/fake GTX's), are available with the Ford 5 bolt outlet (so it is a bolt on replacement for stock T3 turbos), and the performance won't be that much different at your power levels (5-7% less power, a few hundred RPM slower spooling for the same housing a/r).
|
|
