BeBopsama

Just pulled a part an s5 keg in hopes of using these housings in my build. The engine ran great just burnt oil on start up thus smoked a **** load. lol Was hoping a few people could give me a second opinion... or even a third and fourth lol

I'd like to achieve 90psi on all faces of both rotors and have a decently reliable engine running sane boost. anywhere from 8-10psi

K-Tune

iTrader: (26)

Sure they can be put back into service...they should be in the 90-100psi compression range once broken in.

BeBopsama

Okay cool that's what I was initially thinking too. A friend said the edged where the corner seals would touch is a little worn and he wouldn't use them but people typically do.
Really appreciate your input. Thank you.
Any other people wanting to chime in?

blink13

It would probably only help if you had them resurfaced by a place like freelance motorsports. I plan on getting mine done by them. I hear they do great work. Just something to think about.

BeBopsama

Hmm I would but my budget is non existent. Blew it all on a rebuild kit with super seals. Still haven't opened my engine but this is my spare I was hoping to use as parts. The rotors are in pristine condition. Too bad they're s5 n/a. These housings tho just might be better than my turboII housings. Thanks for the advice guys!

TonyD89

iTrader: (10)

How much for the NA rotors?

BeBopsama

350. Perfect tolerances matching "d" weight. 9.7:1 compression

blink13

Well if the budget is tight crack open the other engine and pick out which housings are best. Then later down the road you can always get the others resurfaced and have a spare set. Just in case

BeBopsama

That's the plan lol. Whichever are best I'm using for now and if I don't end up selling the others I plan on getting them resurfaced and potentially ported.

pfsantos

iTrader: (1)

Maybe it's too early in the am for me, but aren't the NA and TII housings different? Like turbo water passage and no exhaust diffuser? And S5 knock sensor on rotor housing, S4 knock sensor on center iron. And spark plug position slightly different?

Like I said, don't remember exactly, but get a few more opinions.

BeBopsama

You are correct sir. But all is irrelevant. I am using two s5 housings so the plug location won't be an issue. Also knock sensor makes no difference. And as far as the turbo coolant passage(only required for the rear housing and a coolant feed) is not a concern if you have emmision removed and have plugs on everything possibly lol. I plan on getting my turbo coolant feed from the rear iron so it's fine.

BeBopsama

Oh also... The exhaust diffusers. The exhaust sleeves are removable and can be swapped. Despite that I plan on grinding them out considering I plan on selling my other housings in there original tII glory as long as they are usable

BeBopsama

Blah it's too early. Lastly... was more concerned with the condition of the wear surfaces. There's no deep scarring or anything crazy. Pulled from a working engine etc etc

jjwalker

The chrome on the S5 housings is harder and more durable, so I'd try and use those if I could.

Those housings don't look bad. If you can use a plasma cutter, use that to cut the baffles out then grind the edges smooth. Trying to cut those baffles out with anything else is going to suck because they are made of inconel.

BeBopsama

got some pictures of another housing as well as a front iron and more importantly... one of my turbo rotors which has something i feel uneasy about...

please let me know what you guys think... the rotor has iono... funky corrosion? machining to 3mm is not currently an option for me so either i get another rotor or reuse this lol. also, how can i tell what series the rotors are? it seems to have some checkered pattern on the combustion faces... is that series specific?

jjwalker

That rotor looks like a series 4. The checker pattern you are referring to is from the cast (not visible in pic). Series 5 rotors have a machined combustion recess unlike the cast recess in the series 4 rotors.

With that said, that rotor looks like trash. Best use for it now is to make a rotor clock, or use it as a fancy door stopper.

7dust

iTrader: (14)

If you are using the stock turbo water feed, you will have to drill the NA housing - or get your water elsewhere.

BeBopsama

Okay... I know I probably over boosted but this rotor was in my engine for the last 70k but I always thought it was questionable. And i know about the water feed. How does that housing look though? I'll probably sell it but was curious about the burnt looking residue or whatever that is near the spark plug holes

jjwalker

The "burnt" spots you are referring to are fairly normal.

The housings look okay to use.