Overboosting

I own a 1997 Eclipse RS with the 420a motor in it, and have recently decided to turbo the motor.  I've peiced together everything i need and am about to install it on my car.  Untill i just reached a problem.  First of all i should let everyone know its a used kit that came off of a built talon and he was boosting at 20psi.  He said that he wasnt using a boost controller and that the wastegate was set for 20psi.  I want to turn the boost down to around 6, but dont know if i will need to just buy a new wastegate or if im able to adjust the one i have to a lower setting.  Help would be very much appriciated.

a boost controller should controll the boost even with your waste gate. i think. and why would you spend all that money on turboing the 420a AHHHHHH. you should of just gotten a gst/gsx seriously. if you have lots of time and lots of money i guess its cool to say you have one but not very realistic

and is it a built motor, cause if it isn't yeah get a manual boost controller and drop it down quick.

you cant lower boost lower than the wastegate spring.  So if you have a 20lbs wastegate the lowest you can run is 20 psi.  so youll need a 5 lbs spring to run levels that low.

ya there is alot more to it then just throwing a turbo on there. if you have done your research you already know. emonz thats good to know i always wondered why i couldnt drop my boost below like 12 but when i did have my boost controller down my car bucked and wouldnt boost worth crap it was sad. it was perfect timing i had a mustang next to me not cobra or saleen and he was revving and i took off and my car was running like shi t but i still got him. so i turned the boost controller up and it was good to go

yeah.. i totally read past that wastegate part lol.

Thanks emonz your probably the only guy on here who left a real comment, no offense to anyone but man if your gonna say something at least know what your talking about. Atown your just a retard im sorry but do you understand how much that swap would cost? First of all the tranny is on the complete opposite side of the car. And a gst motor cost more than the turbo kit i bought, and one more thing a turboed 420a at 8psi is faster than a gst. So why would i do a more expensive swap?

Darknigh you sound just about as dumb, obviously you yourself must not know anything about turbo aplications cuz you said i can slap on a boost controller and turn my boost down. It doesnt work like that, boost controllers can only turn boost up. The wastegate controls what your lowest boost setting can be.

Back to the subject. Yeah Emonz I've been doing as much research as i can and thats what i was thinking i needed to do is change the spring, but ive also been talking to people who say you can do something with the actuator to adjust it, but idk how to do that.

Oh here is one more thing i should probably mention the turbo itself is an EVO VIII turbo.

quote:

ORIGINAL: ndub

Thanks emonz your probably the only guy on here who left a real comment, no offense to anyone but man if your gonna say something at least know what your talking about. Atown your just a retard im sorry but do you understand how much that swap would cost? First of all the tranny is on the complete opposite side of the car. And a gst motor cost more than the turbo kit i bought, and one more thing a turboed 420a at 8psi is faster than a gst. So why would i do a more expensive swap?

Darknigh you sound just about as dumb, obviously you yourself must not know anything about turbo aplications cuz you said i can slap on a boost controller and turn my boost down. It doesnt work like that, boost controllers can only turn boost up. The wastegate controls what your lowest boost setting can be.

Back to the subject. Yeah Emonz I've been doing as much research as i can and thats what i was thinking i needed to do is change the spring, but ive also been talking to people who say you can do something with the actuator to adjust it, but idk how to do that.

Oh here is one more thing i should probably mention the turbo itself is an EVO VIII turbo.

I think that he ment that you should have sold your car and bought a GST/GSX to start with. You should also probobly not rag on long time members, we have a lot of respect (for the most part) for eachother around here, we are all wrong at one time or another. This site is about expanding your knowledge on cars.


Also... A 420 @ 8psi would have a hard time keeping up with a GST. That is assuming you have all the appropriate supporting mods. A lightly moded GST can get around 230hp

Congrats on the new turbo tho. Sounds like you pretty much know what you are doing. I hope that we can help you with anyother questions you might have. Good luck finding the appropriate wastegate!

it depends if it is a internal gate or external gate.  Just so you know the stock Evo wastegate is only on 12psi when running the wastegate pressure.  not many people ever upgrade the wastegate either untill they go for a big turbo with an external gate

ya i wasnt saying drop a 4g63 into your rs. i just think your wasting alot of money but thanks for the comment if you stick around you should get some pics up we always like to see things that have not been done very often. or atleast i do. i think i could take your 420a turbo in my gst btw

Ya sorry for sounding really rude with my last comment its just it always seems like everytime i have a question tons of people will try to answer it and not know what they are talking about.  As for a 420a at 8psi it will beat a gst.  Hahn Racecraft makes turbo kits and their stage 2 kit runs 8psi with stock motor, the only thing upgraded is bigger injectors and a fuel pump and it runs 13.7 on street tires.

well i doubt we will ever get the chance but i would like to see it once your done if you are still part of the forums. good luck and i hope it works out for ya. i personally like to see different things out there instead of the same things over and over. do you plan on sticking around? are you on the west coast?

sorry had to edit, seemed to miss the other posts.  the 420a might give the gst a run with that, until the 420a blew the headgasket lol.  but the thing is, with the gst you can upgrade a lot quicker so yeah.

ya i have fast easy quick ways to get up to 300 or more without doing anything with the internals. thats why i believe i have an advantage over the 420a T

gotta love it huh lol.

ya but im sure a gst/gsx cost way more than an RS does.
Ya im gonna be sticking around on the forum, when i start working on it I'll try and get some pics up, I would right now but i dont have a digital camera so the only pics i can show you now would be the ones that I have on my myspace.

Im not anywhere neer the west coast man, im in Des Moines Iowa. lol, which is both good and bad, the good thing is cops dont give a crap about anything. We can street race about as much as we want. Plus they dont check anthing on cars, like emissions or junk like that.

you can get a good gsx for like 5-6 right now, is that about right??  i paid 5500 for mine.

ya i over paid for my gst and paid dearly the guys b4 me where dragin it and the motor blew like 2 months after i got it. lol that how i learned alot about my car. my 5k dollar car turned into 10k. with new clutch and few other parts i did whil the motor was out. this is the 3rd engine for this car and i intend to keep it for as long as possible. ya des moine isnt very close to idaho but ya get some pics up if you can i love seeing new stuff ill see ya around thanks for the retard comment. lol sometimes i am  

ya anytime, i tend to call people retards a lot and sometimes some people get really mad. I dont ever really mean it but hey we all leave a dumb comment every now and then. Here is a pic of my car. She isnt anything special or different i bought it for 4300 and so far the only thing I've done to it is Intake, header, downpipe, test pipe, custom exhaust with a tsudo muffler..
http://i184.photobucket.com/albums/x303/NLD69373/IMG_1370.jpg

I would like to eventually turbo my GS where did you get all of your research????? There are alot hater's on this site that are trash talk the 420A folks. It's like going to the nail salon and listening to who has the best hair.

quote:

ORIGINAL: hiflyen

I would like to eventually turbo my GS where did you get all of your research????? There are alot hater's on this site that are trash talk the 420A folks. It's like going to the nail salon and listening to who has the best hair.

Ok.... he has a cool head and i actually ignored that he called the other members retard.. but your comment, man... first of all... if youre an all awesome as you pretend to be use a thing called search up there on the top... MILLIONS of time has the turbo'd 420a conversion being mentioned.
Second, No haters dude, everyone's giving out an opinion, learn to shut up and listen, they are right 60% of the time anyways... building a 420a for speed is more expensive than actually getting a 4g63...
Third... i OWN a 420a and im not actually dissin you out... its FACTS...

Welcome to the forum ndub, like your car

60% of the time they are right everytime,   yeah going to the movie quotes

looks clean ya we dont hate on people that want to turbo their 420a its just expensive to do and i personally wouldnt put that time in. if your going to thats cool. i cant wait

hiflyen- Reaserch is probably the easiest thing to do it the world.  Talk to people man, I just go out to the street races where there are tons of people who have turbo projects and tons of people that know there stuff.  I know quite a bit, but I grew up around V-8's.  My grandpa is big into rebuilding old muscle cars so my hole life I've just been around supercharging chevy big blocks.  So thats how i know motor work, but turbos are different, when i first looked into it i didnt know much about them but by talking to people and just going online google searching and talking of forums i learned about it.  I havnt met any haters on this site, they just straight up tell it how it is so far, yeah im gonna say it to the 4G63T is a much better motor than the 420a.
 
Thanks for the replys everyone this is turning more into a convo/argument about 420a compareds to the 4G63T, but i dont mind i find it funny.

quote:

ORIGINAL: EMonz57

60% of the time they are right everytime,   yeah going to the movie quotes

Is it really? lol from which one??