He answered it correctly. Running a non divided manifold with a divided turbine will hamper performance and eventually warp/crack the center divider in the turbine housing.


Its possible, but the ports on the stock manifold are pretty damn small. After porting them out to T4 sized the walls will be really thin. Also, I don't even know if theres room with the stock mani, adaptor and turbo were its positioned. You might be able to flip it over 180 degree so it angles up and forward. But, when you can get used HKS cast manifolds for under $200 from forums and ebay, why go through the trouble of making the stocker work and risk it being to thin and cracking?

~Mike............

 

NO, you got it backwards. Sorta, its all realitive to the manifold design. A well designed divided manifold and divided turbine will out spool AND have better top end performance then a well designed non divided system. Search the single turbo section, this has been covered many apoun MANY times.

~Mike...........

 

/\ Thanks, will do. Just thought I jump in and ask.

 

I didn't really plan on porting the stock S5 manifold. And the spacer would move the turbo up slightly and away from the intake manifold...which would be required in order to use such a large compressor housing. In any case, I would have made the spacer/adapter in such a way to locate the turbo where ever I needed it to be.

Hmm, $200 ain't bad for a manifold.....I just don't like buying used stuff. My luck, it'll have cracks all in it and I won't be able to get my money back. I already have an S5 manifold that I was hoping I could use. I was talking to a guy making 274whp on his stock turbo at 10psi...tuned of course. And didn't BNR claim 360ish whp on their stage 3's? That's still using the stock maniflolds. A better/non-hybrid turbo should have no problems matching that number on the stock manifolds. Just a thought.

So....basically....if you plan on using an HKS or GReddy manifold then go ahead and get the non-divided housing and use a small A/R to make up for the slower spooling? The .84 I was looking at is PLENTY small, even for an undivided set-up. A lot of the HiHP guys use the 1.00 A/R for their undivided set-ups.

 

Dude......we aren't talking about T-series turbos. However, my T-series choice would be the T-61. 550whp? ehh, maybe at 25-30psi & C16.

 

Hmm all this info so far in very good anyone got an idea of what turbo i should go with for my hp goals of 350-400hp. Is the 62-1 undivided with .81 a/r good for this kind of power and good for the streets?

 

In Zero R's write up, he says there are numerous 500+ whp cars running A/R's in the .8x's. So a .81 A/R for a 400whp car shouldn't be a problem as far as still being able to make good power. By "good for the streets" you mean spool fast enough? I sure hope so, because I drive my car to work every day and drag race it maybe twice a year. I want instant boost. Even if it means limiting myself to 350whp. I'm not sure what the HP limit is on an A/R that low but like I said in the first sentance, it should be fine for 400whp.

 

Yeah by "good for the streets" I do mean spooling fast. Yeah so since i been hearing a lot about .8x-.9x a/r being good for street driven i guess im gonna get my turbo soon after i find one for a good price. Can anyone tell me what i should be using like for my bearing in the turbo and anything else?

 

Ball bearing turbos are nice, but they're just too pricey for most budgets. And you can get 62-1 turbos from other manufacturers as well. Master Power sells one for 300 cheaper than Turbonetics. Master Power is ISO 9001 certified, which is extremely good. That means they have very high quality standards. But I know the Turbonetics name, so that who I'm going with.

 

K thanks again fstrnyou, I think i know what im gonna go with.

 

Good street turbo, Very very comparable numbers to the 60-1 until you get up over 16-17psi. On a stock motor 400whp is doable on ~15psi, on a side ported motor I have tuned to ~450whp numbers on 15psi and on one setup hit 469rwhp @15.5psi with the 1.00 divided housing on a HKaSs cast mani.

 

I think Trainwreck had a T60-1. PM him for more details.

 

I'll sell you my 62-1 its the one in the picture u know the one that i started this thread with,(my thread why u tryin to still it) j/p

 

What? His hybrid is installed and in no way trying to sell it? I'm lost? It's on his RX-2.

 

i agree. a 60-1 (replaced by the GT40) will produce well over 500 whp when tuned correctly, so a 60-1 (replaced by the GT40) has no problem producing 400whp. This means your's will have less of a problem producing those numbers, but is going to be better suited for a HEAVILY ported engine. When I mean heavily ported, i mean ports that can flow in excess of 9000-9500 RPM.

 

my ports are huge!!!!!!!!!!! ill get pics soon