88transam 88

had this laying around for quit awhile now im goin to rear mount it no more then 10 lbs that should b good even got a little fmic to thro in snow inj then tune it up a bit shoult do good

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a couple of parts



some one told about a twin scroll once so i got one

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more stuff to go off of

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bov

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wastegate

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once i mount it all up i will post my progress of install and final product and tuned will see what we can do with it and what it will run any input ?

4FishLimit

Please keep us updated. I yanked the motor finally in my '86 to get it ready for the exact same thing you are doing.

I'm particularly interested in your oil system setup.

GTA Sammy

iTrader: (1)

I've wanted to do this forever now!!!
Check this out...
http://www.youtube.com/watch?v=R_fAz...feature=g-user

This gent cut the trunk out and raised the floor of it to make more room for the RMT. Genius if you ask me!!!

Keep posting your progress...

Orr89RocZ

iTrader: (20)

Dont really need twin scroll for a remote mount since you will likely be running 1 pipe to the turbo, from a ypipe in the factory location. Twin scroll is nice for pressure pulses from individual banks of exhaust tied into 1, like if you did a front mount and had left bank into 1 side of turbine and right bank into the other....or if you did twin turbo where you have some cylinders feed left side of the twin scroll, and other cylinders on oposite firing orders feed right side. Helps spool the turbo abit better. With all 8 into 1 pipe, you dont have alot of pressure pulses from firing order, so you could have just got a regular housing. No big deal tho, just thought I'd point that out.

Oil system, figure out how to get oil back there and then use a turbowerx scavenge pump to get it back to the pan. I plan to use a turbo werx pump on my car since my drains wont get back to the pan in a suitable angle.

Other than that, happy turboing. Make a mount for the turbo to bolt to, then run the exhaust into it so the turbo is supported by the car. Use a piece of flex pipe in the exhaust somewhere to allow for movement.

Getting cold side piping back to the front of the car is going to be the hardest part. Mainly for ground clearance issues. I think a single 2.5" to the front will work but seems like it would be pretty small for such a long run. 3" may be better but hard to say. 3" under car is alot harder to fit than 2.5" so thats a concern.

Theres more room to run it back up the stock exhaust location, but that will radiate heat onto the cold side piping, thus killing the effects of the cold charge. Intercooler up front would help that alot but that requires abit more plumbing.

Patrick Day

I would have to agree with Orr89RocZ on this one. I've bean collectong everything I neeed to do the same thing. An will be useing 3in aluminized tubing to run the pressed air back to the intake.. And running it up the tunnel is a good place. but you would need a different trans mount .
The turbowerks does work good but it likes a cooler to run great.
You also should be able to run a bit more boost than what you are thinking. An intercooler is not as important on this set up as it is on most conventual turbo designs. That long run of the exhaust makes the turbo itself a run cooler. and the intake tubes act as a cooler of sorts
And I bet anything there is going to be a lot of nay sayers on this. Some people don't like rear mounted turbo set up. But thats only becouse they don't understand them or the power you can get from them.
So good luck on your build

Orr89RocZ

iTrader: (20)

I wanted to do rear twin mount on my setup but could not figure a way out to run the pipes. Just way too many pipes under the car. It would be too heavy and no clearance unless I ran cold side thru the interior of the car. Wasnt about to switch to a single 91-94mm either but that would be pretty bad

Patrick Day

Orr89RocZ,
How are you running your exhaust? are you running it down the trans tunnel?
With a twin rear mount set up you really only nead to run a single tube back to the intake

Orr89RocZ

iTrader: (20)

Right now I run duals down the stock location, right side of the driveshaft if you are facing the rear end of the car. Just like how stock single comes down and over the axle.

What I wanted to do with twins is to have the pipes come down either side of the driveshaft, so theres a pipe over the axle on each side, drivers and passenger side for both turbos. I'd plan on having cold side come together in a single 3" pipe but that seems small for the amount of airflow I'd be flowing over such a long span. I'd want to run a single 3.5" if I could. Just cant fit that under the car. Oh well, i'm deadset on relocating the turbos behind the headlights to keep them up in the engine bay but under the hood this time.

Patrick Day

I think 3in would be the right side. Remember just how much pie you're talking about running back to the intake. If I'm right THe smaller piping here would help keep the air pressure up that you'll need. The twin set ups I've seen on the corvettes end up running single 3in back to the intake.
And if your going to run dual exhaust down the trans tunnel well now you have the room to run the pressure piping in the place of the old exhaust. well that what I would do

Orr89RocZ

iTrader: (20)

Yeah it was just a thought but I'm not doing remote anymore so I dont want to clog this thread.

LS4GXP

iTrader: (2)

Funny you say this because i was thinking how that would turn out last night for my build lol

My question is, everyone keeps saying how can they efficiently get the oil to the turbo. What does STS use to do theres? Can we not copy the design for third gens?

88transam 88

sts they have a rear oil pump that is electric that returns it in the oil fill cap do your research before u ask all these dead end ???????

LS4GXP

iTrader: (2)

why research when you can just answer it for me

on a side note, no need to be rude, gets you nowhere in life but after reading this a few times to understand it, it says something about yourself

InfernalVortex

iTrader: (4)

Its not because people "don't understand them or the power you can get from them", it's just because it's somewhat of a logistical nightmare. Its easier to just mount one up front after you get to a certain point, and you lose a little effectiveness way back there too. They still work, and you can still get great power out of them, but let's be honest here, they're a way to fit a turbo onto a car without all the trouble of special manifolds and squeezing a bunch of turbos under the hood and finding room for all the piping. But finding room for all the piping for a rear mount is difficult too, just in a different way.

But definitely good luck with putting it together, I cant wait to see how it's all done and how well it works. Always cool to see turbo v8s rolling around

88transam 88

Well just a little update got my pump in today for the turbo its just exactly what any one needs for the turbo system no matter what kind I'll post pics asap can't wait to feel it boost Yes finally!

88transam 88

ok so got a great update for every one got it all done this car is pretty dang fast just got back from a test drive well over ten pounds of boost easy hit twelve for sure but for all the nay sayer's out rear mount turbo's really do work man do they work the guy with z24 cavi is proof that rear do work make power and reliable i haved now driven the back and fourth to work and back every day on low boost and tonight cranked it up the that is and its like jekel and hide when you booost it lol this shhh is fast no bs vids and pic's asap till later ! I am now the new owner of a turbo Transam Just like marty for all who know who that is

GTA Sammy

iTrader: (1)

I'd love to see how you ran your charge pipe back to the engine!!!
Can't wait to see pics and Vids!!!

Most people don't have the guts to pull this off, so enjoy it... You're now one of very few...

Congrats

88transam 88

good news and bad news will take pics for u tonight but im more then positive i hurt the motor crank keeps pressureizeing it won't hold oil in the vavle cover's just blowing out any way it can find its way out rings or something is building pressure in the crank case so ive been on it all day just might pull the motor and tear it down and forged the bottom end and go from the good head gasket's head studs the usaual
so i will up date asap i promise

T/Aperformance

I have a few questions for you:
What pump did you use and where did you mount the return line to?
The oil fill cap just doesn't seem to me to be a good place. Your dumping alot
of oil in there.
Also what are you using for a pcv. or venting of the crank case. do you have some sort of catch can?
How many miles are on your engine?
One last one do you have any pics yet of your set up?
I sure would like to see just what you did before you take it all apart.

88transam 88

here's some picture's for now goin to pull the motor no matter what pulled the plug's the look great got a scope looked in the plug hole's cranked it over piston's are just as good as when i put them in in back on 08 valve's look good so time for stroker crank with rod's and some forged piston's and some good rings because those rings have been in there since 2004 i swear up and down count less pass's at the track about 30000 plus miles so ya i more then positive it's time for a good set of ring's but i got it now so and this thing fly's turbo's are so cool the shop i turn wrench's at we build some sick blower and turbo cars so this was just the iceing on the cake for me finally after about ten year's third gens are where it's at to me i can walk on just about any street car drag car drift road car out there that are real street cars and can fire them up and run what ya brung all out but for now tear down rebuild get it back on four wheel's asap like i all ways do **** i drove it back and fourth this whole week till friday night when i wiped out the ring's

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more photo's

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GTA Sammy

iTrader: (1)

That my friend, is cool !!!
I like your style... No Holds Barred!!!

What did you do for Fuel Control?
How did the T70 spool up? I was thinking a GT35R

I want to do this sooo bad!!!!

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ya just a adj's fpr but it work's good and my boss know's a buddy with a dyno and we checked the afr's there and it was right on spot atfer a few adjustment's so ya it work's great!

88transam 88

got into the cylinder's with a boreascope no sign of detantion piston's are in great condition the valve's look good also so im just goin to put in a stroker kit did a leak down test and its the ring's so it shoulndnt b long to get it right back on the road i might take a video before i take it a part just to show all the nay sayer's

88transam 88

Ya the t70 hits right at idle even when on the street the turbo hit's right when i crack the throttle blades it's instant responce it comes on hard right from about 1500 then we just run it out the back door 5500 maybe 5800 but it pulls so hard we have to let out of it but thats it for now all up date asap

GTA Sammy

iTrader: (1)

Now that you know it was leak down past the rings...
Wouldn't it be beneficial to use "Total Seal Piston Rings"
http://www.summitracing.com/search/B...c&autoview=SKU

Looking back I wish that I put these in my 383... what's another $300+ bucks right?

TKR 88 GTA

Hey so I know I'm a little late to the party lol but this is how I pretty much pictured my setup, nice to see it actually works. It's a great looking job man!

One of my questions is how did you go about the tune for it? I noticed you had the MAF still right? I read before on a post that our stock ones can't handle it is that true? And another question which blow off valve did you go with? I think I missed it in one of the posts or something.

Again good job man! Can't wait to start my setup now lol

88transam 88

The mas meter I have is fully ported screens gone but metered the Air with out a problem ran it for seven days daily driven and got better fuel tip in response better idle man it ran way better then I could have ever thought

TKR 88 GTA

So its pretty much same tune that you had before you added the turbo? And so its just a stock MAF just no screens or what? I have 30lb injectors in the T/A right now..

I can imagine how it pulls especially spooling that quick? Dang lol

88transam 88

ya sorry cant recall if i also said its fully ported all the cooling fins or heat sinks have been ground out with precision or else they will bno good but ay for the tune thats still onthe back burner still im done redoing the motor here real soon like asap the go stand alone bs3 fast holley or accell those are all relitively the same as far as efi goes fuel system is good trany is soso and the car is sound so ya cant wait to get it back on the street asap

TKR 88 GTA

Dang thats sick it still pulled nice with out a tune for it makes me excited to get mine up and starting. I noticed you live in alb I will be moving to Farmington here in a couple weeks, ill have to make a trip down there to hang out with one of my buddies and check out your car when its done lol

And couple more questions, that turbo what's the A/R on it? And are those just eBay blow off valves and waste gates?

88transam 88

pulled the heads dont look bad got some parts on order so here's a few pic's

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cylinder's & piston's