3sgte questions

[rtknighton]

I have A 91 with 2nd gen 3sgte that needs work the works timing belt head gasket rings you know. Would it be better to rebuild my motor or swap a 3rd gen?

[TheEngineer]

i would just rebuild the motor. Depending on your money situation you may even consider built internals if you plan on tearing it down anyway. but there really isnt much to gain in the swap if your gonna be building your back up anyway

[rtknighton]

If I was going to swap 3rd gen I don't know if I would build the current motor. What about the afm the 2nd gen has problems with? Currently the motor has a non recirculating bov. I know the motor isn't designed to have it. Any input?

[andyb16]

What are your ultimate goals, power wise? If you're going to build it up, there's not much reason to go 3rd gen. If you just want 250-270 whp, a 3rd gen with a couple bolt ons will get you there easy.

The afm isn't necessarily "problematic" as long as it works. It's a restriction, but as long as it works I wouldn't decide to go 3rd gen because of it.

Do you "need" to do the headgasket, or is that a preventative maintenance thing? If the hg and the rest of the motor is good, I wouldn't worry about it. If it's toast, I would probably rebuild it with good stuff instead of going with a 3rd gen with an unknown history.

Just my .02

[rtknighton]

The hg is a must. I drained my coolent and there is oil in it. So no madder what I need to do that. Timing belt is preventative maintenance but I might as well do the rest. New water pump the works. I'm thinking about 400whp so if I deside to build it up I will stick with the second gen. What about bpv vs bov I have been reading alot and people are saying the stock bpv is the best way to go and most reliable. Dont get me wrong I love the sound of an aftermarket bov but it's not a must for me? The turbo on my car isn't stock and I don't know much about it however it does work very well. T3. I have been told if I am going to build my second gen I need to get a standalone computer system to support it. Which would eliminate the need for 12psi cap, afm, and recirculating bov? I don't know alot about this though is it a must?

[TheEngineer]

oil in the coolant could just be a bad oil cooler. Just something to think about

[TWO-VEE-ZED]

The afm isn't necessarily "problematic" as long as it works. It's a restriction, but as long as it works I wouldn't decide to go 3rd gen because of it.

Yes.it does work and there`s a way to adjust it too for performance/economy but unfortunately it is indeed a restriction and you can eliminate it by fitting a programmable engine management system such as the Wolf 3D.

[MR2Jedi]

Originally Posted by rtknighton

The hg is a must. I drained my coolent and there is oil in it. So no madder what I need to do that. Timing belt is preventative maintenance but I might as well do the rest. New water pump the works. I'm thinking about 400whp so if I deside to build it up I will stick with the second gen. What about bpv vs bov I have been reading alot and people are saying the stock bpv is the best way to go and most reliable. Dont get me wrong I love the sound of an aftermarket bov but it's not a must for me? The turbo on my car isn't stock and I don't know much about it however it does work very well. T3. I have been told if I am going to build my second gen I need to get a standalone computer system to support it. Which would eliminate the need for 12psi cap, afm, and recirculating bov? I don't know alot about this though is it a must?

Stock BPV is the best and most reliable. It uses a diaphram instead of being spring loaded like the aftermarket BOV's. They eventually fail, can cause rough idleing and you get a " rich fuel mix" everytime you shift gears.
The BPV is much more responsive too.
If you're running a T3/T4 turbo, you should really use some type of engine management to take advantage of the turbo- with the neccessary fuel upgrades of course.
I would rebuild, but know that you will not achieve 400rwhp with the T3.
You'll need a bigger turbo than that.

[rtknighton]

I pulled the motor stripped the block and the 3rd cylinder piston ring seat was broken. Common problem?

[MR2Jedi]

Originally Posted by rtknighton

I pulled the motor stripped the block and the 3rd cylinder piston ring seat was broken. Common problem?

Common? No, but when people go bigger turbo and don't supply enough fuel for that turbo, the #3 chamber is usually the one that goes lean 1st.

[rtknighton]

So do I need to upgrade fuel pump and injectors?

[BDSL]

Originally Posted by rtknighton

So do I need to upgrade fuel pump and injectors?

A few things:
- maybe you were overboosting
- get a ATS Rom Tune or other standalone that allows to spray a little bit more fuel on injector #3 if you are running high boost or aftermarket turbocharger
- clean your fuel injectors

[MR2Jedi]

Originally Posted by rtknighton

So do I need to upgrade fuel pump and injectors?

If you're running a T3/T4 turbo, then yes, highly recommended. You should also have some type of engine management.
If your goal is 400rwhp, you won't get there with that turbo.

[rtknighton]

Engine management being? Where should I look for new fuel system that's decent. Also I built .040 over bore full new bottom end could use complete head if you could give me a direction to look. At this point I should go bigger turbo

[rtknighton]

Originally Posted by BDSL

A few things:
- maybe you were overboosting
- get a ATS Rom Tune or other standalone that allows to spray a little bit more fuel on injector #3 if you are running high boost or aftermarket turbocharger
- clean your fuel injectors

When I bought the car the guy I bought it from was boosting 16 I turned it down to 7 not knowing if it was built for that much boost. Aftermarket turbo charger yes t3/t4 I believe. Ats rom tune know where I can get one?