totallimmortal

Well I go back to work in about 2 weeks, and should then be able to start on my project as the money rolls in. Some of you may remember when i posted a few months ago, my NA has pretty much died, although it still starts and engine runs good the motor has lost alot of compression and the tranny is done.... again. So enough with the games i'm turboing another NA motor i have with a stock s5 turbo, I'll also be using a tii intake manifold witha 1/2 inch aluminum spacer to give me more area to port match the manifold to the six port block. I'll use a ebay intercooler and will do the piping myself. I will also run larger injectors and larger fuel pump. for now i'll tune usingmy trusts SAFC2 but will upgrade to a stand alone as money allows. So I just need some tips, like what size injectors? how much boost should i run to begine with? can i use the oil cooler lines to feed the turbo oil? and whats the highest boost the s5 will run effiecently? Any advice is appreciated

Turblown

iTrader: (12)

In my exprience with the stock IC fuel consumption has not increased going past 11psi, telling me efficiency goes down considerable past that point. So I would say at first run the lowest boost possible and work your way up to 11psi. I would run 720cc secondaries, for now. Smaller injectors sizes gives you a better spray pattern, upgrade again when necessary. I would drill and weld on a bung on the stock oil filter pedistal for a feed line for the turbo, and the same on the front cover for the return line.

totallimmortal

Just wondering but any reason why i couldn't or shouldn't use the oil cooler line for a feed to the turbo? So stock primaries and 720 secondaries should support 10psi on the stock turbo?

MARTIN

Just get a T from the hardware store and put it in the the stock oil pressure sender location. And for the drain you can either put a bung on the oil pan, or tap the front cover. I would get me a turbo front cover, but thats just me.

Houstonderk

iTrader: (3)

What i did was get a racing beat oil filter pedestial and use the bigger fitting for the oil inlet adn then i used the Tii front cover since i got the Tii oil pump and also need the baffle by the chain. My local hose and rubber place made me a ss hydaulic line and even welded the stock fitting on there for 40- bucks.

HAILERS

I'm curious because I've not a clue. Why does it need a baffle by the chain? I've seen that written in the past and have always wondered about that.

brent clement

Oil hitting the chain would foam up is my guess.

BklynRX7

Foam up and splash around. Im gonna get one but i know someone running without it and it doesnt seem to be a big deal.

Fire85GSLSE

iTrader: (29)

Ok so you want to add a turbo to basically a stock NA motor using the S5 Turbo and exhaust manifold.

Some thing to consider if your doing a rebuild to build this motor. Get a set of low compression rotors, and also get a TII uim,lim,and tb or a 3rd gen set up to flow much better than the stock na intakes and tb.

If your using a prebuilt na motor (basically stock 6 port) I would not try to go over 8-10psi max. There should ba someone out there running this type of setup that can chime in and tell you what they learned.

Good luck

BklynRX7

^^ if your going to rebuild a 6 port motor and put low compression rotors in, I hope you drop them on your foot. No offense.

Fire85GSLSE

iTrader: (29)

Ok, then wise guy explain?

how are you gonna turbo a 6port high compression motor and run over 10psi and get it to last? Have you done it? Why do you think they put lower compression rotors in the TII motors to begin with? Honestly how much boost do you think the na motor would hold?

Please explain your comment instead of leaving it open.

totallimmortal

I will be using a tii intake as i mentioned before with a half inch aluminum spacer to give me room to match the ports. And running boost on the higher compression rotors is fine and will give me a nice quick spool up. basically i want to see how much power i can make on the stock na motor with stock s5 turbo and about 10psi. i'm just looking for tips on injector sizes and oil line options and i forgot to mention before where is best to run the coolant lines to?

BklynRX7

First of all if your going to take apart a high comp motor just to put low comp internals in, WHY DONT YOU JUST GET A 4 PORT???

Second of all SEVERAL people on and off this forum have run 10psi and over on high comp setups and had no problems. As long as its tuned right it will last as long as a low comp, itll just be faster

BklynRX7

For coolant you have 2 basic options (i was lokking into this earlier this week) but id say the easiest is to take the coolant that runs through the tb from the rear iron and reroute it through the turbo and then back into the tb.

The other involves getting a tii waterpump housing and usign the stock return nipple.

totallimmortal

^yup if i was doing anything to a motor i'd put high compression rotors in a four port

Haven't you ever seen a turbo honda? civics integras and rsxs all responde very well to boost with thier stock compression which is higher than my 9.4 , unfortunatly stock piston motors tend to be able to handle much less power than a stock rotory

staticguitar313

iTrader: (2)

your going to use a spacer for the tii LIM to the block, STFU, port match the bitch. i suggest you read over this writeup:

http://www.teamfc3s.org/forum/showth...rbo+conversion

I was goign to use TII intke manifolds on my project but, i'm going a different way now, my goal is too keep as many stock n/a parts as possible without being stupid about it. That way emissions testing will be painless and simple, as my fc is a daily driver.
Also look into alcohol/methanol/water injection kits, by adding one thats determined by boost you can lower your intake temps, retard detonation and run higher boost safely.
You better have a damn good ECU setup (a damn good tuning) planned to handle the needs of a high compression turbo motor, otherwise, BOOM, turbo n/a isnt a project id recommend skimping costs on at all.

you guys are goobers

totallimmortal

well it's been done before on the stock ecu with an safc and i'll try it and if you've looked at of looked into port matching the tii LIM to the 6 port block then you'd know there really isn't enought material to do it well so a on half inch think piece of aluminum port matched to the block on one side and to the LIM on the other will smooth the transision

staticguitar313

iTrader: (2)

Theres enough material, the only issue with it is that you have to fill in those two recesses on the manifold thatyou cut into while port matching, using a spacer is goign to have you hitting the turbo, which isnt good. The turbo exhaust manifold i'm designing puts the turbo out of the way from the manifolds, less heat transfer.

totallimmortal

you can make it fit but it doesn't seem to transision as smoothly there is a post somewhere with the spacer and it seems to be smooth, you would just use a extra flange un the exhaust manifold as a spacer to keep the turbo the same distance from the lim

brent clement

No offence but do you really think heating the intake charge(tb) with the coolant that's heated from the turbo is a good idea?

totallimmortal

no but that will work for me since those lines never went through my tb. i don't know why maybe cause its an 86 but there aren't anny passesge through the tbso i just coupled those coolant line ends together so they will go to the turbo now

totallimmortal

So deos anyone remember the thread i'm talking about where someone used a half in spacer to make the transision from the 6 port block to the Tii LIM smoother, If most of you think i don't need to do that then i won't it'll be a lot less time without it anyway

brent clement

What your saying about the spacer makes sense to me. See if you can find someone to weld it to the lim.

Brent

totallimmortal

yeah we have a tig out at the shop i'm sure someone could do it, you think the heat from the welding may warp it?

brent clement

Nah, just preheat it a bit and put a nice chamfer on both pieces. I had to weld the corner of the lim back on for the 87 that I bought last year. They tried to take the lim off without removing the bottom front bolt. I welds alright.

Brent
I'd do it for you but your a little far away.LOL