Semnos

For one....feeding the turbo with oil way back isn't that difficult, but I would worry about my oiline being thata long and all the way there. And the turbo's return line is gravity fed, so it needs gravity to go back to the oilpan. Now you have it all the way back there ...you would need like a pump, to pump the oil back to your oilpan...too much hassle for me.
As for everyone wanting to build a V6 or V8 turbo...I am going to build one(V6 turbo) to and using a T04B and am going to mate the two banks together into the turbo. I still haven't gotten my turbo yet . If I would go with a small turbo I would do it like bambooseven said. nice small logstyle mani's and a T3 on both side. It should fit perfectly and give you good results. You'll be happy like that. If you want ony a little bit of power do it on one side, but you'll be wanting more so I would suggest do both sides, but it's up to you. And the turbo sits high enough for the oil to return to the oil pan

TURBOZ28

i know a log style manifold would be better but im really only looking for another 50-60 hp at the rear wheels, since lt1's have the hyperexploding pistons so i ony want about 5 psi of boost, so i think by mounting the turbo inbetween the y-pipe would work out ok, and a small pump could feed the oil back into the valve cover through a custom fitting screwed into the valve cover, like i said this is going to be a low budget keep it simple project,

stretch-d

Nothing really simple about a turbo system & even low boost systems should take advantage of well designed plan.

Why only settle for an extra 50-60 hp? Cover all your bases, spend a little more time & money and get better results. Avoid getting into a position where you wished you did it differently from the beginning.


If you do the system in this way, you'll be happier, create more reliable power & have less headaches.

TURBOZ28

i hear ya on that one but like i said, the lt1's are very high compression from the factory and the pistons are weak, i dont race the car at the track but once a year and really only take it out on weekends, so thats why im only looking into about 50-60 more hp, and want to stay with a small turbo for space issues and something that spools quick for those 1/8th mile blasts from traffic light to traffic light, do you think a T-28 would suit my needs?

stretch-d

I think that's too small for a big V-8.

Check out the compressor maps after you figure out what your max cfm will be. This will help you decide what turbo will suit you needs.

Edit: Buy the book Maximum Boost for detailed instructions on how to go about the turbo system design process.

B16Drag

Z28, why dont u just spend $500 bux on a nice nitrous kit and save yourself the headache of putting together a turbo kit that will cost you more than that... Honestly though, if you rarely go out and race and just want that quick burst of 50-60HP... nitrous at WOT will make you happy! Unless you like the "PSSSSSSSSH"

Just my $0.02...

91esibtuned

good point

TURBOZ28

i already have a compucar wet nitrous kit on the car now, 100-150 shot, but the bottle runs out too quick thats why i want a turbo so the power is always there and i could still spray as well...

hackish

Ok, first mulletmobile comment. Transmarobirds are exactly what the mullets drove way back when I was in highschool. Mulletmobile colloquially here refers to any V8 RWD muscle car, but more so the 80's and later models.

Here is what I wrote on the subject back in October...
They have a nice writeup on what turbo lag is. Unfortunately they're confusing boost threshold with turbo lag.

They're also making piles of claims about turbo efficiency and such by moving the turbo away from the manifold. Unfortunately they have no idea about ideal gas laws. They said that the denser exhaust gas at the tail pipe is more efficient to run the turbo. Unfortunately they forgot that the exhaust is about 1000 degrees cooler back there so you've got a magnitude less volume in order to run the turbo itself.

Let's not think of the FOD possibilities back there. Don't drive your car on a dirt road or as some people have pointed out in the rain. I don't think the heat would be a huge issue since the exhaust will be very cool by the time it makes it back there.

Most of their dyno proof consists of gtec pro printouts. Finally they made 520bph on an LS1 motor and 10 PSI. Running an amazing stock fuel system and an AFR of about 13.5:1. I can only wonder what sort of fuel... C16 anyone?

Oh but wait there is more. That's an air filter down there. You want to suck ---- from behind your wheels into the engine? HELLO!!!

Someone pointed out their marketing photo:


To which I replied:
Don't forget that by the time your exhaust gets down that far it won't have that kind of heat left in it. I wouldn't recommend you touch it, but think about how hot your muffler is in relation to your manifold.

Today I'll add the following turbo lag point...
Making boost is basically a feedback loop. The more air you pump into the intake the more exhaust volume you will get out and subsequently faster you can spool the turbo. In this case you're pumping your intake charge from the back of the car to the intake. That's a lot of charge volume to pressurise when you get on the throttle. I believe it will severely affect driveability - ie sluggish throttle...

-Michael

91esibtuned

thats a cool pic lol