More turbo discussions for 200ci

[66Sprint6]

Just did some research on how to build my own water injection. I noticed alot of people saying to spray before the turbo only if you dont have an intercooler, then spray the intercooler instead in that case. Is that true, or would it still be good to spray before the turbo w/ intercooler. If not, will spraying the intercooler give me as much as a boost in performance and more importantly, keep detonation down?
Matt

 

[Anonymous]

Destroyer,
When I really get on this project (actually putting it on the car) Im gonna get your help on the set up as far as basically everything goes, injection, intercooler etc. You have been very good. Oh, what do you think, out of your experience and with what all Im gonna be running, should I be able to make in HP and what boost would I be best to stay around for daily driving. Ballpark estimates are fine. Thanx man
Matt

mate, bring on the questions, i am only to happy to lend advice and help.

with a 200cu provided the car is healthy. @15 psi you should see round the 110-180rwkw mark ( 146-240hp at the wheels), posibly even more. with efi and a intercooler. sorry its just to hard to make hp claims... too many variables to be considered.

as for boost pressures for the street.....

there is no set limit on whats most drivable. hell my own car runs 32psi all day everyday. see with ur turbo selection u've made, the exhaust housing is fairly large, so you wont see any real boost till the second halve of ur rev range... trust me this is good!!!!!. in the first half of the rev range ur car will behave pretty much like a stoker but once the needle swing past say 2500rpm you'll find the car will be kicking arse.

so i say run the full boost u are intending to run.

another bueaty about turbo's is the fact you can adjust the amount of boost u want to run. simply plumb in a t-peice into the turbo wastegate line and bleed of boost pressure to fool the turbo into producing less or more boost, so dial in 5 psi then keep adding to it till you feel comfortable enuf with boost presures and till ur motor says no more.

cheers.joe.

 

[Anonymous]

Just did some research on how to build my own water injection. I noticed alot of people saying to spray before the turbo only if you dont have an intercooler, then spray the intercooler instead in that case. Is that true, or would it still be good to spray before the turbo w/ intercooler. If not, will spraying the intercooler give me as much as a boost in performance and more importantly, keep detonation down?
Matt

this realy is dependant on inlet temps....

do not run water injection at first..

put the car on the dyno see how its behaving. if it only needs a short drop in inlet temps then the intercooler srpay is best. if it needs a big drop tho u will need w/i into the inlet tract.

cheers.joe.

 

[Anonymous]

the thing to remember about turbo systems and engines in general is that its all about efficiency. its all about the flow!

with that having been said, what are you guys doing for exhaust manifolds? is anyone using a headder and croping it or what?

i only ever play with custom tubular ones made from steam pipe sections.

i make them for any car and usually charge round the 400 dollar australian.

tho running a cast exhaust manifold with the end choped of and a turbo flange welded to it works, it will have poorer boost response have less power and the engine bay area will heat up a lot more then in comparision to a good proper turbo header.

cheers.joe.

 

[66Sprint6]

thanx for the replys,
I keep learning and learnin, Im glad Im doin it now way before I even try to get it going for real so that I can go the best possible route the first time through. I am lookin to get an intercooler next and then prolly a wastegate and BOV. Im getting the parts early so I can have it all to do when it comes time. On a side not, I keep getting flack from a friend who got an LT1 for his s10 truck, keeps tellin me to get a bigger motor and thinks Im wasting my time. I think not, lol
Matt

 

[CobraSix]

Definitely get the book "Turbochargers" or the other one mentioned.

Slade

 

[Anonymous]

I noticed somebody said that water droplets hitting the compressor is a bad thing. What if you are running a draw through setup, wouldn't gas droplets hit the commpressor since they are much closer? Or does the fuel evaporate in the plenum before it even gets to the turbo? Would water injection make much of a difference in a draw through setup?

 

[MustangSix]

Any amount of water or fuel that would stall the turbo would probably choke the engine as well.

A turbo should be able to handle normal fuel and water dispersion and actually helps vaporize and disperse the droplets. It would be like dripping water and fuel into a food processor that's running at 50,000rpm.......ZAP!!

 

[XFlow_Fairlane]

yes but when that water hits that soft AL wheel spiinging at 50k+ it has a tendancy to caitate....and errode the wheel away.

nick

 

[CobraSix]

You'd definitely want a very fine mist. It is easier to plumb for upstrem of the turbo since you don't need as much pressure as if you did it down stream. Down side is that no matter where you put the injector, you still will cause damage over time to your turbo. Question is whether the damage will become noticable enough before the turbo needs a rebuild anyways. Also, remember, the injection should not be running all the time, only at the very high levels of boost that you decide to run, so you impact time will be limited.

Slade

 

[Anonymous]

So if I use the draw through but no water injection would it be ok or would the fuel hit the compressor and ruin it?

 

[XFlow_Fairlane]

fuel will be fine enough...

good way to inject water is after the turbo. run a vac line to the tank (just a AL one) and it will pressuize the sytem so the pump will not have to over come boost pressure. then put a small air bleed hole onteh tank so that is will release pressure (could even use a radatir cap I woudl think)

maybe one of those remote expansion tanks in jegs (round ones liek a cantain)

if I run injection I have a 60psi shurflow 12 pump at home (off a garden sprayer)

nick

 

[Anonymous]

Two things to consider when running water injection.

One- Get the Windshield washer resivor level sensor from a late model car. That way you know when you are low on water.

Two- Use a low pressure valve in the water line, pressure side. They open at about 1 psi and will not allow the water to siphon into your engine. Finding your motor hydrolocked would be a drag.

John

 

[66Sprint6]

New Question,
What gauges would I need to make sure to have when I boost it? I know I need a boost gauge, but is that all I need. Will I need a fuel/air mixture gauge since its carbed? Any others I should look into. Lookin at getting some 2-1/16" gauges to add a nice look to the car, but prolly will hide em,
Matt

 

[MustangSix]

Boost/vacuum gauge, oil temp

 

[66Sprint6]

Im thinkin Boost/Vac, Fuel Pressure, and oil temp. If I run water injection I will put LEDs into whatever pod I run the gauges on. Any others I should look into?
Matt

 

[Anonymous]

when i build turbo motors i have-

oil temp
oil pressure
boost/vac.
air/fuels are handy too (not so much on a good efi but i'd imagine prety vital to a carby fed one as my limited expierence in carby's had let me to belive all they ever do is go outa tune!!! and dribble fuel all day! )

volts/water/fuel are given.

speed/rpm are optional.

in mine i've got,

320k speedo, 8000rpm tacho, volts,water,oil pressure, oil temp, 30 psi boost guage (although i run 32 lol), fuel.

cheers.joe.

ps. do me a favor and dont put them on the bonnet/cowl for everyone to see (its becomming very rice!~!)

 

[66Sprint6]

I actually like how they look on the hood (bonnet) lol. Ive been on fullboost.com and seen alot of it from Australia. I will either put them on the pillar or somewhere around the dash. I know the pillar is "ricey" but it is in a good place to see it so thats what I will prolly do. I dont want them on or in the dash really, but who knows.
Matt

 

[66Sprint6]

Ok,
heres what Im lookin into so far, feel free to add anything I might need
Oil temp
Oil Pressure
Boost/Vac
Air/Fuel mixture ( how can I run this without oxygen sensors, would it be better to run a fuel pressure gauge? Or should I try to rig up a Air/Fuel ratio gauge?)
Tach
Maybe Fuel Pressure???

Anything else vital to have
Matt