... way to keep us posted :rolleyes: Oh well... your here now

Thats cool that you are acually trying this... You must have pictures... Could you post them for us? I wish I had the ***** to start it, but even if I did.. I would been out of resources 3/4s of the way though.... Should be ok about half way though summer though

My question is, Does the turbo spool... or your just getting no PSI out of it...

Do you have pictures of the manifolds? or anything like that? Your car is an LT1, do you have any underneath shots? The rest of us guys are L98

 

i believe your turbo is too large and the distance between it and the head is too great. this i think is the reason for the lag. however, i think if you keep it where its at and find a way to run your other header into it also , it may work. the only other thing i can imagine is a very bad intake leak, but i would think you would be able to hear it. regardless, i like the pioneering spirit.
im working on mine as fast as i can , but i have a long long way to go. im doing much more than just installing turbo's here. im building the engine, trans, etc. changing the electronics, and doing some custom body mods to boot. the point is, i will keep everyone informed of how it all comes together, but it will be a while.
i can tell you this, im making my own headers, not modifying any.
they will look similar to this (see attached photo), some slight differences, like moving the mounting flange back a bit.
oh, and i found a free intercooler( snagged from an isuzu bob truck). im after the big three about who's gonna give me the best price on an engine management system as we speak. well actually theyres 4 but motec is outragously over priced.
hang in there guys. :cheers:



ok tell me how to post a pic, lol :seeya

 

By "snagged" I hope you dont mean "stole", but that would be funny though :lol:

Anyway same here, I;m not only going to be doing a TT setup, I'll have to swap out the Tranny, some other internal engine parts and hopefully the Rear suspension lives up. Also will my stock block handle 400HP? What about 575HP? Its a 2 bolt main so I dont know how much reliable power they can spit out without throwing up. :confused:


[Modified by Light84vette, 11:53 PM 2/18/2003]

 

Just under the text box, there is a button that says "Image"
Click it.
[ IMG][/IMG ]

this will appear, put your link inbetween the bracketed IMG's.

Like this [ IMG ] Photo Link [ /IMG ]

I dont put the spaces between the brackets "[" and the "IMG" like I did or it will not work. I did that to show you, otherwise it will not print the text.


[Modified by bill mcdonald, 5:44 PM 2/18/2003]

 

MN_Vette, I would like to see some pictures if you can.

I am amazed you got the 60-1 housing to fit. I have one of these now, it is 8" long and the compressor housing it 7.5" diameter. Not exactly compact. DO you think you can fit a matching one on the passenger side with the starter down there?

Also, did you use on center exhuast housings?


[Modified by bill mcdonald, 5:48 PM 2/18/2003]

 

the pick is on my computer. i would love to show it, just cant figure it out. i'll e-mail anyone who wants to see , the pic

 

ok, E mail me.

bmcdonald@px.com

To post it, you have to have it on a web page somewhere. I have not got this far so I dont know how you get it uploaded on a web page, or where to get a web page, even though I have been told there is a space on this forum to do it here.




[Modified by bill mcdonald, 7:20 PM 2/18/2003]

 

ahh, o well. i e-mailed it to you. anyone else that reads this and wants to see, just gimme a yell & i'll send it

 

Send them to me also... Turbox2@charter.net

 

umm, jerry, youve seen them. more accurately, you sent them to me, lol.
im takink your advice. instead of using modified headers , im going to have some made. similar to the ones you showed me, but im gonna move the flange back closer to the center primaries. im also trying to figure out a way to mount the wastegate directly below the header. any ideas??

 

Well I might have to disagree with you on those points. The turbo that I chose should be sufficient for my overall horsepower goals. I'm looking for about 800HP on just engine with boost :D The intake piping should be just fine if I can seal it. If you look at the length of the ones that they use for supra's or lingenfelters or any import using an intercooler you'll see that the intake piping runs all the way around the front of the car, up and down, and everywhich way, probably a good 10 feet or so.

If I do run the other side into the turbo it would be extremely nice and work wonders, but I'd be stuck around 500hp max if that. My problem is that I'm only running one side. If you think about a turbo setup the exhaust spins the turbo which creates more airflow and the more airflow going into the engine the more exhaust comming out of the engine which spins the turbo even faster to keep up with the more air you need to put into the engine. My problem is that I'm only getting half the additional air out that I'm putting in. This is why I'm trying to shoot nitrous to compensate for that until I get the funds to put the other side on. Tax returns should be comming in a month or two and I'll probably do it then.

BILL-

I'm not using a 60-1, I'm acutally using the 60-1 HI-FI, which still uses the smaller compressor housing. Actually after doing all of this, I've figured out that you might be able to mount the turbo directly below your ASR housing on the LT1. all of that junk in there is for the EGR or AIR system and it all comes out and I think you'd be able to fit your turbo there. This would also eliminate the need for a seperate pump for oil return. Just something to think about. On the starter side I'm planning on using the same 60-1 HI-FI with a .84 turbine housing, but this housing will be an On-Center, my other one was a Tangential. Once I find out how well this intake piping thing works out I'm going to try and spot place a turbo in there and see where it would fit. It might call for a smaller starter, but they make race starters that are smaller and lighter weight.

OH, and I'll see if I can get some pictures for everybody. :cheers:

 

nm


[Modified by bill mcdonald, 8:40 PM 2/18/2003]

 

OK, need some info maybe some of y6ou have already researched and might be kind enough to shed some light on for me. below are the issues i am still researching and would very much appreciate some insight on.

1- Oiling the turbos... i imagine a oil filter sandwhich adapter with the threaded holes for pressurized oil feed would be a good source for pressurized oil to feed the turbos and there is also an oil return threaded hole for a return fitting on this piece. if this would not work please explain why and let me know a better source for feed and return.

2- sensors, i will be primarily focusing on the MAF LT1 car, and wonder if a 2BAR MAP and MAF would be needed or if programming could compensate for the above atmospheric charge.

3- wastegates..i think delta gates are the way to go here and mounting would just be a trial and error thing but a bleeder "blowoff" valve i am not sure about if it would be needed or where to locate it, any suggestion are appreciated.

4- intercooler sizing...HOW TO? using a basic 350CI motor with two stock GN turbos, how do you judge or aquire the spec for an intercooler that will accomodate this setup under about 6-7 PSI boost?

5- and last, fuel pressure regulator, will a boost referencing pressure regulator be needed or again is this something that can be handled with tuning?

any help on this will greatly be appreciated, i am completely green when it comes to boosted applications and need all the help i can get! thanks again guys!


Chris :D

 

the oiling set up you describe will not work. primarily the return. the return side of a remote filter adapter is still under pressure. i.e.the turbo wouls be under pressure & you will blow the seals & fill your intake & exhaust with oil. the oil drain on a turbo must be as free flowing as possible. make a nipple in your oil pan & drain it there. pick the oil up at the fitting above the oil filter.
if your gonna run a maf setup, your gonna haveta have a blow off valve, or you will be spending a good bit on maf sensors.
as far as the management end of it , theres a lot of possibilities. im personally going for the aftermarket( f.a.s.t or d.f.i.or tec3). mainly because it can take years to get it all right using oem ecu's . im impatient.
hope this helps a little

 

Actually you can use an this type of oiling setup. The oil intake on a turbo is ment to be pressurized, just at a lower level then directly out of the oil pump. You'll need to put a restrictor in the line and it should be ok.

Hey, is there a good place to find out about the engine management systems? perhaps manufacturers websites or better yet an independent comparison??


[Modified by mn_vette, 4:24 PM 2/19/2003]

 

yes mn, the oil is pressurized, the turbo housing however , is not. if you run the turbo oil supply into the turbo , then out to the engine bearings , etc your in for disaster. also if you restrict the oil going into the turbo , then run it out to your engine bearings. all i can say is ouch. thats gonna be a very expensive mistake...

 

Yeah I think you are right, you would have to modify the remote oil filter assemby to leave the normal path open, but that opens up another can of worms. But anyways, where did you find out about the engine management systems???

 

started out getting opinions from other forum members. started checking the manufacturers sites.
everyone seems to like the f.a.s.t. system , but i believe electromotives new tec3 is gonna be just as good but 5 or 6 hundred less, with d.i.s.
only thing im not sure of yet is their tech support. they dont seem to be in any hurry to answer my questions via e-mail. and yes i could call, but as many people have found with ati's supercharger tech support, phone calls can add up to some bucks quick..
so basically , im going with the best price & best support. not sure who the winner will be , but for 2 grand + their gonna haveta damn near kiss my butt.

 

by the way , anyone needing engine parts( crank, rods,pistons, etc ) check these guys out www.dirttrackthunder.com. i've gotten all my bottom end parts from them for aboud a grand. ross pistons w/ rings, pins, etc/forged 6" rods/ caststeel, lightened, knife edged crank. they have great prices and teriffic service. :cheers:

 

i only skimmed through this, but didn't see anyone else mention using the 7749 computer from the 90-92 Syclone/Typhoon. it uses a 2 or 3 bar map and looks to be an easy, inexpensive swap for 7730 or 7727 speed density TPI guys.
http://www.speedtoys.com/~bort62/7749/Index.htm