I am planning to turbocharge my saturn I am building the turbo system myself. I am looking for advice on Fuel management I want to keep this thing happy and healthy.
heres the plan:
t-28 garrett running 6psi
cold air intake
some sort of fuel management to keep the mixture right
and 2 1/4 exhaust
afr and/or egt and boost gaudges
I'm not looking to make 500hp I am hoping to have enough power to make the car fun say 200hp at the crank and similar torque.
again what I am looking for is advice on ways to keep the mixture correct.
"Racing is life Everything else is just waiting"
Phil
ok I now have my turbo its a T-28. Before you all tell me its too small read my goals I only want 200hp that is well within the range of the T-28.
What I need to know is will a FMU do the job keeping this engine fat and happy?
"Racing is life Everything else is just waiting"
Phil
I know N/A but this preasureised thing scares the bejebbers out of me I want the power but I don't want to smoke the engine.
"Racing is life Everything else is just waiting"
Phil
Quote:
t-28 garrett running 6psi
cold air intake
some sort of fuel management to keep the mixture right
and 2 1/4 exhaust
afr and/or egt and boost gaudges
1. If you have a turbo setup, you aren't going to have an "intake" anymore. If anything, you can use the filter to filter the compressor side of your turbo, but that's it.
2. You can use an adjustable FMU like the one Cartech has available. It's very popular and works.
3. If you're going to upgrade your exhaust system, go with 2 1/2" rather than 2 1/4"
4. Check out
www.zeitronix.com, they offer a setup where you can view your Boost, EGT and A/F ratio on a small monitoring device (LCD Screen) instead of 3 big gauges going on a pillar or something. It's sort of costly to get that package but well worth it. That's what I'm running in my car.
Quote:
ok I now have my turbo its a T-28. Before you all tell me its too small read my goals I only want 200hp that is well within the range of the T-28.
What I need to know is will a FMU do the job keeping this engine fat and happy?
I understand you only want 200 HP but I'd still suggest something a tad bigger. Efficency plays a big part of your gains. It's not all about "If you get X turbo, you'll have X amount of HP", PSI plays into effect and so does the size of the turbo. 6 PSI on a T-28 I don't think will get you to your goal...
Also, check out compressor maps for the T-28
Quote:
I know N/A but this preasureised thing scares the bejebbers out of me I want the power but I don't want to smoke the engine.
As long as you play it safe, you'll be ok. Honestly, if you don't know what you're doing or too nervous about doing it yourself, take your car to a professional. It's worth spending the money on a turbo system that works properly than you not spending money on a turbo system that won't work properly or get finished properly.
If you have anymore questions, just ask.
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ok the t-28 arrived toasted so I am trying to get a t-3 and a mani to match my question is....
Is a compressor bypass valve necessary on an automatic?
"Racing is life Everything else is just waiting"
Phil
Philip Rodda wrote:ok the t-28 arrived toasted so I am trying to get a t-3 and a mani to match my question is....
Is a compressor bypass valve necessary on an automatic?
Are you refering to a blow off valve?
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I just ordered a t-3 from spooled motorsports it should arrive next week I already have a small intercooler and a cartech FMU. On the issue of the bypass valve or "Blowoff valve" I have an automatic why would I need it I don't close the throttle between shifts and when I do close the throttle I am slowing down. I really don't see a point to having one of these other than to make my car sound like JOE RICER I am not wanting that. My goals are stealth and supprise I don't want loud exhaust I don't want a loud intake and I don't want a LOUD WHOOSH when I let off the throttle.
"Racing is life Everything else is just waiting"
Phil
OK, THAT IS UNDERSTANDABLE, BUT I DO BELIEVE THAT A BLOW OFF VALVE IS THERE FOR PRESSURE RELIEF. BUT IM SURE YOU MIGHT BE ABLE TO FIND ONE THAT ISNT SO LOUD, OR EVEN MAKE IT SO IT ISNT LOUD.
Philip Rodda wrote:I just ordered a t-3 from spooled motorsports it should arrive next week I already have a small intercooler and a cartech FMU. On the issue of the bypass valve or "Blowoff valve" I have an automatic why would I need it I don't close the throttle between shifts and when I do close the throttle I am slowing down. I really don't see a point to having one of these other than to make my car sound like JOE RICER I am not wanting that. My goals are stealth and supprise I don't want loud exhaust I don't want a loud intake and I don't want a LOUD WHOOSH when I let off the throttle.
Here is a more indepth writing on blow off valves:
Quote:
A blowoff valve (also known as a bypass valve, compressor relief valve, or sometimes hooter valve) is a vacuum operated valve that is located in the intake tract on an internal combustion engine after a turbocharger, but before the throttle body butterfly valve and intake manifold. Its use is to vent extra pressure being developed by the turbocharger when the throttle is closed, such as during a shift. During a shift in a car with a manual transmission, the throttle plate is closed. The pressure produced by the turbocharger has nowhere to escape to. This excess pressure could potentially cause damage to the turbocharger's impeller and may also slow or even stop it, thus causing turbo lag when the throttle is pressed again.
A blowoff valve is connected by a vacuum hose to the intake manifold after the throttle plate. When the throttle is closed, a strong vacuum develops in the intake manifold after the throttle plate and "sucks" the blowoff valve open. The excess pressure from the turbocharger is vented into the atmosphere or recirculated into the intake upstream of the compressor inlet; when vented into the atmosphere this can cause erratic engine behavior on motors that use an air flow meter for the electronic fuel injection. Engines using a MAP (manifold absolute pressure) are not affected. Externally-vented blowoff valves have a very distinguished "psshh" sound that is desired by many who own turbocharged sports cars. Some blowoff valves are marketed with trumpet shaped exits that amplify the "psshh" sound.
Blowoff valves are generally not required on automatic transmission vehicles. Automatic transmission vehicles shift without closing the throttle, but are still fitted with blow off valves by many manufacturers so the turbo is able to provide boost sooner if the throttle is only released for a short amount of time.
So I guess you are right, it is somewhat optional but it would help provide boost sooner, like the write up says.
www.kronosperformance.com / 732-742-8837
as a baseline what should my fuel preasure be roughly for 2-6 psi of boost just so I can get to the dyno shopand tune it properly.
"Racing is life Everything else is just waiting"
Phil
Philip Rodda wrote:as a baseline what should my fuel preasure be roughly for 2-6 psi of boost just so I can get to the dyno shopand tune it properly.
Well that depends on what size injectors you get as well. Usually the bigger the injectors you have, the lower you want the fuel pressure to be (at idle). As far as through out boost, I'm guessing that would depend on what turbo you have but I would personally look more at your a/f ratio rather than your fuel pressure first, if you're not reaching the proper a/f ratios you need, than check or alter your fuel pressure.
www.kronosperformance.com / 732-742-8837
ok heres a good question will the stock injectors support these boost numbers without clipping if not then I have more shopping to do.
"Racing is life Everything else is just waiting"
Phil
Philip Rodda wrote:ok heres a good question will the stock injectors support these boost numbers without clipping if not then I have more shopping to do.
I've had a friend say they can handle up to 6 PSI (the ones in the 2.2 ECO), don't know if that's true but if you have the chance to buy everything now, I would buy the proper size injectors. Don't cheap it out.
Look into the Ford style injectors.
www.kronosperformance.com / 732-742-8837
Also, I believe some of the DSM injectors can fit in our motors, just check the sizes.
www.kronosperformance.com / 732-742-8837
This is the car the turbo is going on
"Racing is life Everything else is just waiting"
Phil
OK
www.kronosperformance.com / 732-742-8837
point taken its not a J-body so I'll go elsewhere thanks
"Racing is life Everything else is just waiting"
Phil
Philip Rodda wrote:point taken its not a J-body so I'll go elsewhere thanks
Sorry, I didn't mean to sound like "if you don't have a jbody than I don't care" kind of attitude. I was just saying ok.
Good luck with the project.
www.kronosperformance.com / 732-742-8837
I can't stay mad besides this site is a great source of info...
I have a question about fuel preasure and I hope I can get a straight answer...
I have done the math and have found that my injectors will support up to 225hp with raised fuel preasure. my question is this. Those who have an ecotec and have turboed it what fuel preasure are you running under boost and at idle?
I need a baseline so I don't smoke my engine on the way to the dyno.
"Racing is life Everything else is just waiting"
Phil
Philip Rodda wrote:I can't stay mad besides this site is a great source of info...
I have a question about fuel preasure and I hope I can get a straight answer...
I have done the math and have found that my injectors will support up to 225hp with raised fuel preasure. my question is this. Those who have an ecotec and have turboed it what fuel preasure are you running under boost and at idle?
I need a baseline so I don't smoke my engine on the way to the dyno.
I don't have a fuel pressure gauge hooked up yet so I can't help you there...
www.kronosperformance.com / 732-742-8837
ok here's what I have so far for this project
garrett t-3 turbo .42 a/r cold side .48 a/r hot side
saab blackstone intercooler it fits perfectly on left side of radiator
adjustible RRFPR with a max of 12:1
I still need to get
Exhaust manifold
down pipe
intercooler piping
-4 oil hose and fittings
-12 drain hose and fittings
1/2 inch water lines and "T" fittings
Vacume hoses
AFR gadge
Boost gadge
remember folks this turbo system is slated for JUST 6psi NO more! Once it is reliable at that boost it will be sealed.
is there anything else I would need (BOV is a want on hits car not a need, its an automatic)
"Racing is life Everything else is just waiting"
Phil
Hello, new to this place and just getting into modding ecotecs in my new Saturns.
I do have some input on the turbo, regarding the BOV however.
To eliminate noise and increase efficiency (as well as reducing wear on your setup/compressor/etc.) just route the output of your BOV to the manifold side of your turbo.
The effect is to basically make no waste of boost and give a little more efficiency to the turbo by keeping the input pressure stable. Some people have implemented brass/iron ball valves at the manifold; the combo of BOV, piping, and the spin of the turbo should keep the gasses flowing the proper direction on a low boost project without any problems.
This also almost completely dispells that annoying WOOSH!
I run this on my 2000 Saturn SL and (maybe it's all in my head) but when I switched to this bypass setup, I noticed a little more Umph! at the shift. Nothing earth shattering, or necessarily time shaving...just a bit more solid feeling. (1.9L, auto, @ 9 psi)
Some say this is a true performance enhancement, but I can't really buy into that based on my limited experience.
Just a thought.
Quote:
adjustible RRFPR with a max of 12:1
Is this an FMU that you have or an actual Fuel Pressure Regulator?
Quote:
I still need to get
Exhaust manifold
down pipe
intercooler piping
-4 oil hose and fittings
-12 drain hose and fittings
1/2 inch water lines and "T" fittings
Vacume hoses
AFR gadge
Boost gadge
How To: Build Your Own ECOTEC Turbo Kit
www.kronosperformance.com / 732-742-8837
it is one I have it's adjustable from 3:1 to 12:1 I purchased it from a guy who changed injectors and it is set for 6psi and the same size injectors I have.
"Racing is life Everything else is just waiting"
Phil
Philip Rodda wrote:it is one I have it's adjustable from 3:1 to 12:1 I purchased it from a guy who changed injectors and it is set for 6psi and the same size injectors I have.
Well just because he had it tuned for his car at a certain setting and he was running 6 PSI, doesn't mean you will be using the same setting...just an FYI.
www.kronosperformance.com / 732-742-8837
